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The Inseparable Connection Between Body and Mouth

March 21, 2024 12:00 AM
Authors: Maddy Howard, Brooke Dension, Shanna Groesbeck. Mentors: Sandy Wilson. Insitution: Utah Valley University. AbstractThere are many systemic diseases that are linked to oral health. This literature review specifically examines different studies and academic journals that have studied the relationship between oral health, obesity, heart disease, and diabetes. Obesity is linked to the patient's oral health in many ways. When patients are consuming large quantities of food more often than normal, this results in a more acidic environment along with energy for bacteria to grow. One study found a correlation between obesity and risk factors such as “frequency of brushing teeth, smoking, tooth loss, gingivitis, and dental caries (Yilmax & Somay, 2021). This article discusses the strong correlation between oral health and heart disease. Several studies emphasize the importance of dental hygienists educating their patients about the link between their oral and cardiovascular health. The articles conclude that treating periodontal disease more effectively and aggressively could lead to a marked reduction in coronary heart disease rates and vice versa.Diabetes and periodontal disease is also examined at length in this literature review. Diabetes and periodontitis is described as a ‘two-way relationship’. Evidence shows that individuals with diabetes, type 1 or type 2, are 34% more likely to develop periodontal disease. On the other hand, individuals experiencing periodontal disease are 53% more likely to develop diabetes (Wu, et al., 2020). This literature review will explore the importance of oral health in keeping your entire body healthy.ReferencesArora, A., Rana, K., Manohar, N., Li, L., Bhole, S., & Chimoriya, R. (2022). Perceptions and practices of oral health care professionals in preventing and managing childhood obesity. Nutrients, 14(9), 1809. 10.3390/nu14091809.Batty, G. D., Jung, K. J., Mok, Y., Lee, S. J., Back, J. H., Lee, S., & Jee, S. H. (2018). Oral health and later coronary heart disease: Cohort study of one million people. European Journal of Preventive Cardiology, 25(6), 598-605. 10.1177/2047487318759112Centers for Disease Control and Prevention. (2022). Defining adult overweight & obesity. Centers for Disease Control and Prevention. Deraz, O., Rangé, H., Boutouyrie, P., Chatzopoulou, E., Asselin, A., Guibout, C., Van Sloten, T., Bougouin, W., Andrieu, M., Vedie, B., Thomas, F., Danchin, N., Jouven, X., Bouchard, P., & Empana, J. P. (2022). Oral condition and incident coronary heart disease: A clustering analysis. Journal of Dental Research, 101(5), 526-533. 10.1177/00220345211052507Sanchez, P., Everett, B., Salamonson, Y., Ajwani, S., Bhole, S., Bishop, J., Lintern, K., Nolan, S., Rajaratnam, R., Redfern, J., Sheehan, M., Skarligos, F., Spencer, L., Srinivas, R., & George, A. (2017). Perceptions of cardiac care providers towards oral health promotion in Australia. Collegian, 25(5), 471-478. https://doi.org/10.1016/j.colegn.2017.11.006Preshaw, P. M., Alba, A. L., Herrera, D., Jepsen, S., Konstantinidis, A., Makrilakis, K., & Taylor, R. (2012). Periodontitis and diabetes: A two-way relationship. Diabetologia, 55(1), 21-31. 10.1007/s00125-011-2342-yWu, C.-Z., Yuan, Y.-H., Liu, H.-H., Li, S.-S., Zhang, B.-W., Chen, W., An, Z.-J., Chen, S.-Y., Wu, Y.-Z., Han, B., Li, C.-J., & Li, L.-J. (2020). Epidemiologic relationship between periodontitis and type 2 diabetes mellitus. BMC oral health, 20, 204. 10.1186/s12903-020-01180-wYilmax, Busra. & Somay, Efsun. (2021). Is obesity a problem that threatens oral health in adults? Cukurova Medical Journal, 46(3), 1215-1221. DOI: 10.17826/cumj.950243

Meta-Analysis of Success Determining Factors of Healthcare Innovations

March 21, 2024 12:00 AM
Authors: Barry Gyman. Mentors: Cody Reeves. Insitution: Brigham Young University. The purpose of this paper is to qualify and analyze the leading driving forces in determining the success of healthcare innovations in a variety of subspaces in the healthcare industry. Health is one of the largest markets in America and is almost universally relied upon. As the systems and technologies of healthcare are innovated and improved upon, the quality and efficiency of this care stands to increase, potentially benefiting both those who provide care, those who receive care, or both. The healthcare industry offers a plethora of niches needing innovating and the potential of high economic return for the producers, and yet only a small portion of innovations are adopted and successfully integrated with some areas having a failure rate approaching or exceeding 90% (Sun et al., 2022)(Jacobs et. al, 2015). What propels these few successful innovations towards adoption that so many other innovations fail to achieve? Through the analysis of dozens of papers researching success robustness in various healthcare fields, such as pharmacology and technological innovation, we will summarize the data in search of shared commonalities among successful innovations. Sun, D., Gao, W., Hu, H., & Zhou, S. (2022). Why 90% of clinical drug development fails and how to improve it?. Acta pharmaceutica Sinica. B, 12(7), 3049–3062. https://doi.org/10.1016/j.apsb.2022.02.002Jacobs, S.R., Weiner, B.J., Reeve, B.B. et al. Determining the predictors of innovation implementation in healthcare: a quantitative analysis of implementation effectiveness. BMC Health Serv Res 15, 6 (2015). https://doi.org/10.1186/s12913-014-0657-3

Perceived Risks for Maternal Mortality Among Utah Women

March 21, 2024 12:00 AM
Authors: Marie Gibb. Mentors: Francine Jensen. Insitution: Utah Valley University. Maternal mortality, also known as maternal death, is defined as the death of a woman during pregnancy and up to one year postpartum. (MacDorman et al., 2021; Spelke & Werner, 2018). The United States is the only developed nation where the rates of maternal mortality are rising, and they have been rising for twenty years (Simpson, 2019; Spelke & Werner, 2018). This incidence represents a maternal health crisis in the United States. On average, 700 women in the United States die each year from pregnancy-related complications. This equates to 17.2 maternal deaths for every 100,000 live births (Simpson, 2019). Currently, the maternal mortality rate for Utah is higher than the national average at 21.5 maternal deaths per 100,000 live births (Utah Department of Health and Human Services, 2023). According to More than 60% of these deaths are preventable (MacDorman et al., 2021; Simpson, 2019).The leading causes of maternal death in the United States are hemorrhage, preeclampsia, eclampsia, hypertension, embolisms, and cardiomyopathy, which often lead to cardiovascular disorders (MacDorman et al., 2021; Simpson, 2019). The Utah Health and Human Services (2023) reported that increases in heart disease, hypertension, diabetes, mental health disorders, and other chronic conditions complicate pregnancies and are contributing to maternal mortality in Utah. The American Heart Association has cautioned that pregnancy complications like preeclampsia, gestational diabetes, and preterm delivery are linked to maternal heart disease later in life (Parikh et al., 2021). Research suggests that each episode has a cumulative effect (Marill, 2021), meaning, the more pregnancies women have, and the more complications women have during pregnancy, the more elevated their risks are in general for cardiovascular disorders as they age. A qualitative survey was sent out using snowball sampling to women over the age of 18 in Utah asking about their understanding of cardiovascular risk factors and current health conditions. Findings showed that women were unaware of their potential cardiovascular risks associated with pregnancy. Raising awareness regarding these cardiovascular risks may be the number one preventative strategy, as women are the ones who bear the personal and physical risks. If pregnant women are aware of their cardiovascular risk factors, they can be empowered to raise concerns when necessary. Future interventions may include educating all women of childbearing years about cardiovascular risks prior to pregnancy, as well as more frequent screening of women during and after delivery (Marill, 2021). ReferencesMacDorman, M. F., Thoma, M., Declcerq, E., & Howell, E. A. (2021). Racial and ethnic disparities in maternal mortality in the United States using enhanced vital records, 2016‒2017. American Journal of Public Health, 111(9), 1673–1681. https://doi.org/10.2105/ajph.2021.306375Marill, M. C. (2021). Getting to the heart of America's maternal mortality crisis. Health Affairs, 40(12), 1824-1829. https://doi.org/10.1377/hlthaff.2021.01702Parikh, N. I., Gonzalez, J. M., Anderson, C. A. M., Judd, S. E., Rexrode, K. M., Hlatky, M. A., Gunderson, E. P., Stuart, J. J., & Vaidya, D. (2021, May 4). Adverse pregnancy outcomes and cardiovascular disease risk: Unique opportunities for cardiovascular disease prevention in women: A scientific statement from the American Heart Association. Circulation, 143(18), e902-e916. https://www.ahajournals.org/doi/10.1161/CIR.0000000000000961Simpson, K. (2019). Maternal mortality in the United States. MCN, The American Journal of Maternal/Child Nursing, 44 (5), 249-249. doi: 10.1097/NMC.0000000000000560.Spelke, B., & Werner, E. (2018). The fourth trimester of pregnancy: Committing to maternal health and well-being postpartum. Rhode Island Medical Journal (2013), 101(8), 30–33.Utah Department of Health and Human Services. (2023, March 16). Complete health indicator report of maternal mortality. Retrieved Sat, 09 September 2023 from the Utah Department of Health and Human Services, Indicator-Based Information System for Public Health website: http://ibis.health.utah.gov. https://ibis.health.utah.gov/ibisph-view/indicator/complete_profile/MatMort.html

Identifying the Interactomes of Disease-Causing CryAB Variants

March 21, 2024 12:00 AM
Authors: Joshua Evans, Allison Voyles, McKenzie Bellon, Julianne Grose. Mentors: Julianne Grose. Insitution: Brigham Young University. Alpha-crystallin B (CryAB) is a small heat shock protein that acts as a molecular chaperone and plays an essential role in cytoskeletal organization and myofibril function. Human mutations in CryAB have been associated with various diseases, such as cardiomyopathy and cataracts. However, the precise molecular pathways and protein substrates of CryAB are not yet fully understood and require further investigation. This project aims to increase understanding of CryAB by determining proteins that bind wild-type versus disease-causing variants using yeast two-hybrid screens. It also involves testing for binding specificity of variant-binding partners. A series of these Y2H screens gives valuable information regarding the binding patterns of CryAB, showing distinct binding partners for different alleles of CryAB. Overall, the project provides greater insight into the molecular functions of CryAB as well as a better understanding of the dysfunctional pathways of its disease-causing variants—a factor which may, in the future, have potential applications to the treatment of related diseases in a clinical setting

Transcriptome-Based Risk Score Predicts Time to First Treatment for Multiple Myeloma Patients

March 21, 2024 12:00 AM
Authors: Ishmael Elliott Molina-Zepeda, Brandt Jones, Myke Madsen, Douglas Sborov, Brian Avery, Nicola J. Camp . Mentors: Nicola J. Camp. Insitution: University of Utah. Multiple Myeloma (MM) is a malignancy of plasma cells and one of the more common hematological malignancies (6.3/100,000 new cases/year). Although treatments have improved, most patients fail their first line of treatment and ultimately do not survive beyond 5 years. Identifying patients at high risk of failing treatment early is a critical need. SPECTRA is a statistical technique developed by the Camp Lab to characterize global gene expression (the transcriptome) by representing it as multiple quantitative tumor variables. Spectra variables allow gene expression to be incorporated into predictive modeling to identify high-risk groups.Transcriptome data for myeloma cells was available from 768 patients in the international CoMMpass study where 39 spectra variables were derived. Each patient has a value for each of the 39 variables (their spectra “barcode”); patients can be compared for each bar in the barcode. Predictive modeling using spectra variables was successful in identifying risk groups for time to treatment failure, such that a patient’s tumor transcriptome can be used to predict whether they are at high risk of having their treatment fail earlier.To replicate the CoMMpass data findings, we collect and process local biological samples from MM patients at the Huntsman Cancer Institute (HCI). We collect bone marrow samples, which are then cell-sorted to identify tumor (CD138+) cells. RNA is extracted from these cells and sequenced to generate transcriptome data. Then the spectra barcode is calculated.Utilizing the SPECTRA technique provides a more complete understanding of MM by better characterizing the tumor. Each spectra is a tumor characteristic. Our future research includes an investigation of whether inherited variations (in normal DNA from saliva or whole blood) are associated with the transcriptome risk score. We are also pursuing the SPECTRA technique in several other cancers.

The Caregiving Experience for Children Diagnosed with Cancer: A Secondary Analysis

March 21, 2024 12:00 AM
Authors: Sofia Denise Flowers. Mentors: Lauri Linder. Insitution: University of Utah. Background and Purpose: In the year 2023, roughly 9,000 children will be diagnosed with cancer each year in the United States. Dealing with a potentially fatal diagnosis is already difficult for many grown adults, let alone a young child. The aim of this project is to describe caregiving experiences of parents and children with cancer as related through feedback comments within written and oral feedback to proposed items to measure self-efficacy for managing their child’s symptoms and behaviors used to manage their child’s symptoms.Methods: This project involved a secondary analysis of qualitative data from 21 parents (19 mothers; mean age 38 years) of school-age children with cancer who participated in a study to establish the content validity of instruments to measure aspects of symptom management. Data consisted of interview transcripts and free responses to the content review surveys. The data were then uploaded to Dedoose. My mentor and I worked independently to identify statements pertaining to parents’ experiences in managing their child’s symptoms and responding to the child’s cancer diagnosis. We then met together to reconcile content and then organize parents’ statements into categories and subcategories. Results: 101 excerpts were extracted from the transcripts and included for the secondary analysis. Excerpts were grouped into four main categories: informational resources, social support, emotional support, and medication management Within these four main categories, subthemes of professional staff support, managing child attitude and mood changes, and balancing between being a parent and their child’s medical advocate were present. Conclusion: The insights gained from this project can guide the information healthcare providers need to provide better care to the child and additional support to parents. This can allow professional staff to get a stronger understanding of not just the family’s medical needs but their informational, social, and emotional needs as well.

GPU-Accelerated Monte Carlo Raman Spectroscopy Simulation: Unlocking Computational Speed for Cancer Detection

March 21, 2024 12:00 AM
Authors: Thomas Caldwell. Mentors: Dustin Shipp. Insitution: Utah Valley University. In this research project, we have transformed an existing Raman spectroscopy simulation, enhancing its performance and capabilities through the integration of parallel computing with GPU acceleration. This significant improvement in computation time allows us to break through previous computational limitations, enabling more sophisticated and complex applications of the simulation. The principal applications we will be assessing are the viability and potential of spatially offset Raman spectroscopy (SORS) for deeper tissue analysis, exploring the possibilities of topographical imaging using Raman techniques, and the advanced application of chemical imaging of microscopic tumors. This expanded scope demonstrates the simulation's potential in early cancer detection.

Health Insurance Literacy Among UVU Students

March 21, 2024 12:00 AM
Authors: Emmalie Parker. Mentors: Heather Thiesset. Insitution: Utah Valley University. Changes in health insurance due to the Affordable Care act created a bridge for college students to remain on their parent or guardian’s health insurance for a longer period of time. However, little is done to close the gap of education deficiency in the area of health insurance literacy during this time. While most students in a universal health system have relatively few options to choose from, students in the US are faced with many different plans through employment or the open marketplace. Therefore, in order to ensure adequate access to care, it is imperative that students understand the fundamentals of this system in the US. This quantitative cross-sectional survey sampled 500 currently registered UVU students to assess their knowledge, attitudes, beliefs and healthcare utilization. This data was stratified by age and sex. Descriptive statistics and chi2 analyses were performed. This study showed that disparities in healthcare literacy affect healthcare utilization and can be a catalyst for long-term healthcare access issues for students and their families.

Actitudes, Barreras, y Cambios: Adapting Prehabilitation for Latino Patient Populations

March 21, 2024 12:00 AM
Authors: Quinn Gerber, Lucas Carpenter, Jacob Clemons, Cindy Kin. Mentors: Cindy Kin. Insitution: Brigham Young University. Introduction: It is vital that patients are adequately prepared for surgical intervention. To meet this need, many medical centers have adopted prehabilitation protocols. The aim of this study was to establish an in-depth comprehension of the attitudes towards surgery and barriersand preferences to prehabilitation for patients identifying as Latino, in order to develop a preliminary framework for adapting prehab programs to best meet the needs of this specific patient population.Methods: We conducted qualitative semi-structured in-person one-on-one interviews with Latino patients who had recently undergone major abdominal surgery. The interviews, conducted at an academic medical center, were audio-recorded, transcribed verbatim, translated into English (as needed), iteratively coded, and discussed by four researchers to reach consensus. We used thematic analysis to identify shared attitudes held by patients and common barriers to the adoption of prehabilitation programs. Analysis of these attitudes and barriers, along with stated patient preferences, led to the development of several ideas that physicians can implement to increase prehab adoption among Latino patients.Results: We interviewed 16 patients, at which point we reached thematic saturation. The patients were on average 52 years old (range 20 to 79) and 50% were women. Our pooled kappa score was .92, indicating a very high degree of concordance among the coding researchers. We identified five common attitudes held by Latino patients regarding surgery: anxiety associated with hospitalizations and surgical procedures, deep trust in physicians, reliance on positivity, tight-knit families/communities, and prominent religious and cultural beliefs. A lack of understanding, physical limitations, a reactive/delayed approach to healthcare, dietary barriers, and mental barriers emerged as obstacles to prehabilitation adoption. These attitudes and barriers, along with direct patient feedback, led us to identify several programmatic priorities that may increase adherence to prehab. These components consist of face-to-face interaction, increased communication, patient and physician collaboration in program development, and family/support group engagement in surgical preparation.Conclusion: Our study provides physicians preliminary insight into customizing prehabilitation programs to best meet the needs and customs of the Latino community, including anxiety associated with hospitalizations, strong social support, and a dominant role of religious faith in coping with illness. We identified several critical components that may make prehab more culturally competent and thus more likely to be adopted by patients. These include in-person coaching, increased information about the upcoming operation and recovery, and engagement of family members. We recommend that healthcare teams committed to prehabilitation consider these needs to make their programs more attractive and accessible to their Latino patients.

Thioredoxin-1 is essential for osteogenesis in vitro and in utero

March 21, 2024 12:00 AM
Authors: Caroline Cowley, Megan Jewell, Brenda Mendoza, Aubrey Cluff, Ryan Summerhays, Jason Hansen. Mentors: Jason Hansen. Insitution: Brigham Young University. Approximately 8 million newborns manifest a birth defect every year worldwide. One of the most common birth defects involve disruptions in musculoskeletal development. Oxidative stress has been found to propagate teratogenesis. Thioredoxin-1 (Trx1), an oxidoreductase, is an important antioxidant regulator required for proper embryonic development. Trx1 knockouts have been found to be embryolethal prior to implantation. A preliminary study to assess osteogenesis was conducted using mouse embryonic fibroblasts (MEFs) originating from transgenic conditional Trx1 knockout embryos. Upon confluence, MEFs were stimulated to undergo osteogenesis via commercially available media. A subset of cells were treated with doxycycline (DOX) prior to and throughout the culture period. MEFs were maintained over a 21 day period in a reduced oxygen environment. MEFs were then fixed in formalin and stained with Alizarin red to determine the degree of osteogenesis. MEFs treated with DOX were unable to undergo proper osteogenesis. While this would suggest that osteogenesis is regulated through proper functions of Trx1, it is unknown how Trx1 regulates osteogenesis in utero. Because Trx1 deletion is lethal prior to implantation it has been historically difficult to study the role of Trx1 during organogenesis. With the development of the DOX-inducible Trx1 conditional knockout mouse, we can now target specific developmental periods and evaluate post-implantation processes like osteogenesis. Using proper transgenic mice and breeding schemes, DOX-inducible Trx1 conditional knockout embryos were treated in utero with DOX through the dam’s drinking water, starting on gestational day (GD) 8.5. The embryos were collected on GD 16.5, fixed in 95% ethanol, and then skinned. To visualize bone and cartilage, the embryos were placed in ethanol and subsequently stained with Alizarin red and Alcian blue. The staining showed that embryos lacking Trx1 were significantly stunted in their skeletal maturation. With this data, we are the first to show that during organogenesis, the musculoskeletal system is affected by deletions of Trx1 at specific periods of development. Under oxidizing conditions which exceed the capacity of the oxidoreductase pathway of Trx1, Trx1 exists primarily in its oxidized form and can no longer reduce proteins that have been turned off by oxidation. Our Trx1 deletions model a highly oxidized state in which Trx1 is dysfunctional. Because regulatory redox control of protein activity is required for proper embryonic development, exposure to oxidizing environmental conditions specifically affecting Trx1 redox state may target the disruption of the musculoskeletal system.

Association of Cyclooxygenase 1 (COX-1) rs4648298 and Cyclooxygenase 2 (COX-2) rs20417 Polymorphisms and Prostatic diseases Among Lebanese Males

March 21, 2024 12:00 AM
Authors: Brock Sheehan, Bryson Edwards, Ivanna Soto, Justice Vance, Tyler Haywood, Jefferey Goddard, Logan Seegmiller, Mohammed A. El Saidi, Wissam R Zaidan , Asmahan El-Ezzi , Dr. Ruhul Kuddus. Mentors: Dr. Ruhul Kuddus. Insitution: Utah Valley University. Association of Cyclooxygenase 1 (COX-1) rs4648298 and Cyclooxygenase 2 (COX-2) rs20417 Polymorphisms and Prostatic diseases Among Lebanese MalesBrock J Sheehan1*, Bryson Edwards1, Ivanna Soto Medrano1, Justin Vance1, Tyler Haywood1, Jeffrey Goddard1, Logan Seegmiller1, Mohammed A. El Saidi2, Wissam R. Zaidan3, Asmahan A. El-Ezzi3, 4, Ruhul Kuddus11Department of Biology, 2Department of Strategic Management and Operations, Utah Valley University, Orem UT; 3Radioimmunoassay Laboratory, Lebanese Atomic Energy Commission, Beirut Lebanon; 4Department of Chemistry and Biochemistry, Lebanese University, Hadath, Lebanon. *- presenting author.Background: COX-1 and COX-2 genes encode prostaglandin-endoperoxide synthases (PTGS) isoenzymes, involved in inflammation and possibly neoplasms. The genes are expressed in the prostate gland. Both genes have several polymorphisms. Here we examine the association of rs4648298 (A-G transition) and rs20417 (G-C transversion) polymorphisms and prostatic diseases. This research was approved by the Utah Valley University IRB.Materials and Methods: DNA was extracted from a blood sample of 56 healthy volunteers, 51 volunteers with benign prostate hyperplasia (BPH), and 61 volunteers with clinical prostate cancer (PCa). Genotyping was conducted through PCR-RFLP analyses. The restriction enzymes used were BaeGI (for rs4648298) and AciI (rs20417), respectively. Alleles with the restriction site were considered recessive. The association was inferred through statistical analyses of the distribution of the genotypes (BB, Bb, and bb or AA, Aa and aa), and allele frequencies among the controls and the affected groups. A p-value of ≤0.05 was considered significant.Results: The distribution of the genotypes is in Hardy-Weinberg equilibrium for all three groups. The b allele of the COX-1 gene is extremely rare (less than 3%), and no significant association between the B or b allele or BB, Bb, and bb genotypes and prostatic disease was observed. The a allele of the COX-2 gene is more common in the BPH group (p=0.011), but not the PCa group (p= 0.472) or the combined affected group (p=0.068) compared to the control group.Conclusions: There is no association between the rs4648298 polymorphisms of the COX-1 gene and prostatic diseases. The a allele of the rs20417 polymorphisms of the COX-2 gene is associated with higher risks of BPH and possibly PCa. The small sample size, sampling from one ethnic group, and the low distribution of the b allele in the Lebanese population are limitations of this study.

Generative AI and Image Manipulation

March 21, 2024 12:00 AM
Authors: Tayler Fearn, Caroline Torgensen, Vern Hart. Mentors: Vern Hart. Insitution: Utah Valley University. Coherent diffraction imaging (CDI) is a newly developed modality used to measure phase shifts introduced by fine-scale structures in cells. These phase shifts can be used to distinguish healthy and malignant cells, providing a diagnostic marker for early cancer detection. However, this process, in which diffracted light interferes with incident light, requires collecting scattered photons at large angles, representing high spatial frequencies and short wavelengths. The highest frequencies, needed to reconstruct small details in cells for improved image quality, occur at distances of several centimeters from the central bright fringe. As such, these signals are faint and difficult to collect experimentally. We propose the use of deep learning to synthetically extrapolate diffraction patterns at large distances, where measurements are difficult. In prototyping this method, we will present results produced by a generative adversarial network (GAN), trained using existing data of watercolor paintings to preform style transfer and image extrapolation. This will be an essential step in working towards the larger goal of developing GAN’s that can accurately extrapolate diffraction images.

Using Transfection as a Annotation-free Ground Truth for Training Noninvasive Metastatic Cancer Mapping Methods

March 21, 2024 12:00 AM
Authors: Drew Allred, Vern Hart. Mentors: Vern Hart. Insitution: Utah Valley University. Surgery remains one of the most common and effective treatments for a variety of cancers, especially those that form solid, localized tumors such as breast and colorectal cancers. During these treatments, the palpable lesion is surgically resected with the assumption that cancerous cells have metastasized to nearby tissues. As such, surgeons will excise a tissue margin surrounding the tumor in hopes of removing any additional cancer, thus preventing further spread of the disease. However, this process is time-consuming and requires specialized expertise from a trained pathologist to verify that all cancer has been removed. Furthermore, if the pathology report indicates that not all cancerous cells have been extracted, additional follow-up visits and surgeries are typically required. In recent years a number of non-invasive technologies have been developed which seek to map cancerous cells in whole tissues. Training and validating these methods still requires a reliable ground truth, typically provided by an annotated pathology report. We propose a simpler model in which two cell species were co-cultured to provide a heterogeneous training sample. One of these species (PANC-1) was transfected with a vector coding for a fluorescent marker to represent healthy tissue, while the other species (COS-7) remained untreated, representing cancerous cells. An experiment was then conducted using a coherent diffraction imaging (CDI) system, in which laser light incident on the cells was used to quantify phase shifts produced by each cell type. Fluorescent microscopy was then used to create a map of transfected and non-transfected cells for comparison. Results will be presented demonstrating a correlation between the phase shifts produced by the two cell types and the corresponding fluorescent images, potentially facilitating optical cell identification without the need for pathology.

Demonstration of Chloride Induced Spreading Depolarizations Using Halorhodopsin

March 21, 2024 12:00 AM
Authors: Hunter Morrill, Ryley Parrish. Mentors: Ryley Parrish. Insitution: Brigham Young University. Spreading depolarizations (SDs) are slow propagating waves of depolarization that move through the brain and have been associated with a wide variety of neuropathologies including the termination of seizures, the cellular correlate of aura in migraines, traumatic brain injury, and ischemic stroke. Though first characterized by Aristides Leão in the 1940s, only a very limited understanding of the mechanisms of SD induction has been achieved. SDs have been induced in mouse models using a variety of techniques, however regardless of the method of induction, high extracellular potassium and/or a strong cellular depolarization have been largely hypothesized as necessary conditions for SD induction. Interestingly, we have recently demonstrated that using a light-induced chloride pump (Halorhodopsin) to drive chloride ions into the neurons can reliably induce SDs even in the absence of high extracellular potassium levels (Parrish, 2023). It was also demonstrated that the triggering of archaerhodopsin, which removes protons from the cell and therefore hyperpolarizes the neuronal membrane without affecting chloride levels, did not induce SDs, suggesting the implication of chloride loading as a primary mechanism in SD induction. This challenges the prevalent hypothesis regarding the induction of SDs and results in a novel method of induction that allows for more characterization of the mechanisms involved. The use of genetically expressed light-gated ion channels or pumps is referred to as optogenetics. Using zebrafish, a common model for electrophysiology recordings that is also cost-effective to genetically manipulate, we have established an optogenetically induced model of SD induction. We are currently characterizing mechanisms that result in optogenetically induced SDs with pharmacology to further our understanding of SD initiation and propagation.Parrish, R. R.-G.-T. (2023). Indirect Effects of Halorhodopsin Activation: Potassium Redistribution, Nonspecific Inhibition, and Spreading Depolarization. The Journal of neuroscience: the official journal of the Society for Neuroscience, 43(5), 685-692.

Panic Disorder Lesion Network Mapping Abstract

March 21, 2024 12:00 AM
Authors: Zach Moore, Owen Benzley, Austin Flitton, Frederic Schaper, Jared Nielsen. Mentors: Jared Nielsen. Insitution: Brigham Young University. Objective: Identify neural networks that are associated with panic disorder symptoms through lesion network mapping.Background: Panic Disorder is a neurological disorder in which one experiences unexpected and reoccurring panic attacks. Panic attacks can be characterized by the following symptoms: trembling, racing heart, excessive fear and worry, weakness, tingly hands, chest pain, or a feeling of unreality. A proposed circuit for panic disorder includes the amygdalofugal pathway, which deals primarily with the amygdala. The lesion network mapping method uses functional connectivity to identify neural networks associated with symptoms arising from brain lesions. This is a benefit compared to previous studies done on panic disorder because it relates brain circuits to symptoms rather than individual regions.Methods: 21 lesions causing Panic Disorder were found in the literature, traced on a standard template, and analyzed using lesion network mapping. Specifically, lesion networks for each lesion were calculated using a large cohort of healthy control resting state scans (N = 1000). In our sensitivity analysis, overlap between lesion networks was observed. Results: Of the 21 lesion networks, 14 (67%) positively overlap on the parahippocampal gyrus in the sensitivity map; 13 (62%) positively overlap at the ventral tegmental area in the sensitivity map.Discussion: Symptoms of panic disorder may be associated with the parahippocampal gyrus and ventral tegmental area of the brain. These results found are unique compared to previous studies, but do have general connections.

Effects of Methamphetamine on Microglia through Reactive Oxygen Species

March 21, 2024 12:00 AM
Authors: James Blood, Nathan Sheets, Chase Seiter, Lydia Hawley, Erin Taylor, Eliza White, Hillary Wadsworth, Jason Hansen, Jordan Yorgason. Mentors: Jordan Yorgason. Insitution: Brigham Young University. Microglia are the immune cells of the brain and are activated by many drugs of abuse. One drug of abuse of interest is methamphetamine, which is known to increase reactive oxygen species (ROS). Microglia are sensitive to ROS. Methamphetamine changes microglia morphology. To determine if the effects of methamphetamine on microglia are through ROS, glucose oxidase, which reacts with glucose to form hydrogen peroxide, was applied. Glucose oxidase increased ROS production and decreased dopamine release but had little-to-no effect on ATP release. Glucose oxidase has similar effects on microglia morphology compared to methamphetamine. This suggests that methamphetamine effects on microglia are due to ROS production. Methamphetamine locomotor sensitization behavioral experiments were run to mimic repeated methamphetamine exposure. Along with voltammetry experiments to measure dopamine and ATP release, methamphetamine treated animals were used to detect microglial morphology changes using confocal microscopy. Our methamphetamine treatment was able to change microglial morphology compared to saline treated controls. Methamphetamine injected animals also had attenuated glucose oxidase effects on dopamine release. By understanding how neuronal outputs affect microglia activity in the context of psychostimulant use we can better parse out how the mechanisms of addiction are connected to immune system function.

Does Sonographically Measured Articular Cartilage Thickness Correlate With Knee Pain in Senior Athletes?

March 21, 2024 12:00 AM
Authors: Noah Bezzant, Mikayla Kimball, Ashley Allan. Mentors: Brent Feland. Insitution: Brigham Young University. BACKGROUND: General knee pain is a common complaint among both athletes and older adults. Osteoarthritis is a common etiology for knee pain that can interfere with function during aging and can be assessed by validated questionnaires. It remains unclear whether there exists a dose–response relationship between cartilage loss and pain worsening. Articular cartilage thickness of the femoral condyles can be measured by ultrasound imaging and few studies utilizing this form of measurement exist. It is currently unknown if articular cartilage thickness measured ultrasonographically correlates with pain related ratings in aging athletes. PURPOSE: The aim of this study was to assess whether articular cartilage thickness at the femoral condyles as measured by ultrasound imaging has any relationship to knee pain as rated by the modified KOOS (Knee Injury and Osteoarthritis Outcome Score) survey in senior athletes over the age of 50.METHODS: Data was collected from 35 volunteers (participants in the Huntsman World Senior Games) in St. George, Utah, 2023. All subjects (22 females: mean age = 64.9 ± 6.6 yrs, Ht = 158.7 ± 35.6 cm, Wt= 66.3 ± 10.0 kg; 13 males: mean age = 67.3 ± 8.3 yrs, Ht = 179.3 ± 10.7 cm, Wt= 84.3 ± 13.4 kg) signed an approved consent and completed a modified KOOS survey before being seated on a table, with their back flattened against the wall directly behind them. They were then asked to bring either knee as deeply into flexion against their torso as possible; approximating 120°-140° of knee flexion, depending on the range of motion the subject was capable of. In flexion, the patella was shifted inferiorly enough to expose the femoral condyles so that a short axis image of the articular cartilage was obtained and the thickness of the cartilage was assessed at 3 points.ANALYSIS: All data were analyzed using JMP ver16.2 with a Pearson product pairwise correlations to determine if a relationship between average cartilage thickness correlates with pain subscale scoring from the KOOS in males and females. Correlation between age and thickness was also examined.RESULTS AND CONCLUSION: There were no significant correlations between the pain subscale score and cartilage thickness in males (p=.6998, r=0.1316), females (p=.8733, r=0.0392), or combined (p=.7308, r=0.0655) in this group of senior athletes. Age and thickness was not significantly correlated (p=.1232, r= -0.2877), but did show a trend of decreasing cartilage thickness with age. The addition of more subjects should show age and thickness to be negatively correlated with each other.

The Relationship Between Thiamine and Drosophila Melanogaster Preference for Dietary Yeast

March 21, 2024 12:00 AM
Authors: Dean Peterson. Mentors: John Chaston. Insitution: Brigham Young University. The microbiota of Drosophila melanogaster fruit flies can be observed to study their effects on fly phenotypes. This paper will focus on the microbiota’s effects on fruit fly dietary preference for yeast (DPY), to determine if specific nutritional molecules produced by the microbiota control DPY. Previous studies have unsuccessfully sought to identify such small molecules by testing for roles of essential amino acids (Leitao-Goncalves 2017). A study completed in our lab suggested that bacterial thiamine biosynthesis/metabolism genes influence fly DPY because mutations shifted the preference from a diet with less yeast to a diet with more yeast (Call 2022). In our first efforts we found that raising flies on thiamine supplemented diet influenced their DPY. I want to determine if supplementing thiamine specifically causes this shift, and if the shift observed in the mutants is seen due to a lack of dietary thiamine. Here, I will perform the same tests with flies given diet supplemented with other B vitamins to test specificity. I will then confirm the role of bacterial thiamine on these phenotypes by rearing flies colonized with bacterial thiamine biosynthesis/metabolism mutants on thiamine supplemented diets. If these flies raised with increased dietary thiamine prefer a diet with less yeast, and the experiment with other B vitamins does not show a similar shift as thiamine, then the specificity of thiamine as the small molecule involved in yeast preference is confirmed.

The overexpression of Stx1A and its effects on glucose stimulated insulin secretion in pancreatic beta cells

March 21, 2024 12:00 AM
Authors: Jakob Lenker, Trevor Kendrick. Mentors: Jeff Tessem. Insitution: Brigham Young University. Diabetes is characterized by a loss in beta cell function within the pancreas and the subsequent inability to produce sufficient insulin to regulate blood glucose. While current diabetes treatments focus on delivering pharmaceutical insulin to diabetic individuals, such treatments are temporary solutions and do not address the root of the issue. Instead, our research focuses on potential mechanisms for inducing greater insulin secretion within the pancreas of the individual. NK6 Homeobox 1 (Nkx6.1) is a major transcription factor in beta cells and its overexpression in beta cells is associated with higher insulin secretion. We have shown that Syntaxin 1A (Stx1A) interacts with Nkx6.1; Stx1A is of particular interest due to its role in mediating insulin granule fusion at the beta cell plasma membrane, directly impacting insulin secretion. We hypothesize that the interaction between Nkx6.1 and Stx1A may play an important yet understudied role in insulin secretion. Here, we present the results of Stx1A overexpression on glucose-stimulated insulin secretion within pancreatic beta cells, as well as the effect on the Nkx6.1 interaction. Understanding more about the role of Stx1A in beta cells could provide therapeutic targets to induce greater insulin secretion, which could aid in the effort toward finding a cure to diabetes.

Meta-Analysis Of 58 Human RNA-seq Datasets To Predict Mechanisms and Markers for Resistance in ER+ Breast Cancer Treated with Letrozole (an aromatase inhibitor)

March 21, 2024 12:00 AM
Authors: Brett Pickett, Lincoln Sutherland, Jacob Lang. Mentors: Brett Pickett. Insitution: Brigham Young University. Introduction: Breast cancer is one of the most prevalent types of cancer present in society today, and is the second leading cause of cancer death for women. Approximately 13% (1 in 8) of women will develop invasive breast cancer, with 3% of women (1 in 39) dying from this type of cancer. Three important classifications used when formulating a treatment plan for breast cancer are the presence or absence of Estrogen Receptor (ER), Progesterone Receptor (PR), or Hormone Receptor (HR). Treating Estrogen Receptor Positive (ER+) breast cancer with aromatase inhibitors, such as Letrozole, is the current standard treatment for all postmenopausal women. A prior study by Lee et. al. identified PRR11 as the only gene that was significantly overexpressed in resistant vs non-resistant cancers among the 51 genes in chromosome arm 17q23. The goal of the current study is to perform a secondary analysis of this valuable dataset to identify genes, signaling pathways, and biomarkers across the whole human transcriptome that are significantly associated with treatment resistance in ER+ patients.Methods: We retrieved, preprocessed and analyzed 58 ER+ breast cancer samples from patients who had been treated with Letrozole, which are publicly available in the NCBI Gene Expression Omnibus (GEO) database. The Automated Reproducible MOdular Workflow for Preprocessing and Differential Analysis of RNA-seq Data (ARMOR) was used to process our data downloaded from NCBI. This workflow trimmed low quality reads from the RNA-sequence reads, mapped and quantified our data to generate a DEG list. Gene ontology enrichment with camera was also performed. Next, the genes were mapped to common gene identifiers and input to the signaling pathway impact analysis (SPIA) algorithm to identify intracellular signaling pathways that were enhanced by our DEGs. With that information, Pathway2Target was used to identify known drug targets within our identified pathways. Finally, a decision tree-based machine learning approach was used to predict features/expressed genes that could be used to most accurately classify responders vs nonresponders to Letrozole. Results: Our comparison of 36 responders versus 22 non-responders detected a total of 18,735 genes and identified 105 that were statistically significant (p-value < 0.05) after applying a false-discovery rate (FDR) correction, including SOX11, S100A8/S100A8, and IGLV3-25. We then used the Signaling Pathway Impact Analysis (SPIA) algorithm to determine whether any known intracellular signaling pathways were significantly enriched in DEGs (Bonferroni-adjusted p-value < 0.05). This analysis identified 4 pathways that were statistically significant in Non-Responders to Letrozole Treatment. We then used the pathway results to predict 60 existing therapeutic targets that could be repurposed to treat the resistance phenotype. Notably, the predicted targets for the non-response phenotype included VEGFA, a current target for solid tumors as well as ESR1, an Estrogen Receptor. We next wanted to determine whether we could predict transcriptional biomarkers that could aid with identifying patients that do not respond to treatment. To do so, we used the read counts for all samples as the input for this analysis and identified 278 transcriptional biomarkers. Performance metrics for all biomarkers identified yielded an area under the receiver-operator characteristic (AUROC) curve of 0.972 (Figure 2), indicating an exceptional ability to classify Letrozole responders vs non-responders by the transcriptional profile. Sensitivity for all transcriptional biomarkers was measured at 100%, and specificity at 94%. We used the top two biomarkers from our first analysis as input for a second analysis to determine the performance of a smaller subset. Our second analysis determined that PRDX4 and E2F8 together yielded an AUROC of 0.823 and an overall accuracy of 88.2%. Discussion:Our results identify additional DEGs, pathways, targets and biomarkers for further exploration in the treatment and categorization of ER+ breast cancer.

Hyperglycemic Conditions Impair Essential Nkx6.1 Expression in Beta Cells

March 21, 2024 12:00 AM
Authors: Jared Wieland, Jacob Herring. Mentors: Jeffery Tessem. Insitution: Brigham Young University. A central attribute of Type 2 Diabetes (T2D) is beta cell damage. This damage commonly affects beta cell’s ability to secrete insulin and regulate blood glucose levels. Nkx6.1 is a beta cell transcription factor essential for proliferation, differentiation, and glucose-stimulated insulin secretion. Hyperglycemia is detrimental to beta cell function and function. We hypothesize that hyperglycemia may negatively affect the expression and activity of beta cell transcription factors, including Nkx6.1. To provide an understanding of the effects of hyperglycemic conditions on Nkx6.1 expression, INS-1 832/13 beta cells were cultured in hyperglycemic conditions, then primary rat islets were treated for the same durations of time. Here, we present transcriptional, translational, cellular localization, and degradation of states of Nkx6.1 over 48 hours of hyperglycemic culture conditions both in vitro and ex vivo models. Comprehension of the mechanisms involved in hyperglycemic downregulation of Nkx6.1 is imperative to the development of treatments for diabetes.

Exploring the bioactivity of flavonoid metabolites on beta cell function under GLT conditions

March 21, 2024 12:00 AM
Authors: Eden Beazer, Aubree Bench, Ethan Jones, Jared Carter. Mentors: Jeffrey Tessem. Insitution: Brigham Young University. Incidence of diabetes worldwide has grown from 108 million people in 1980 to 422 million people in 2014, nearly tripling in just thirty-four years. Type 2 diabetes (T2D) is characterized by the loss of pancreatic beta cell mass and the failure of the remaining beta cells to provide adequate insulin. Contributing to the development of T2D is glucolipotoxicity (GLT), a condition characterized by the harmful elevation of glucose and fatty acid levels within beta cells. While there are existing treatments for symptoms of diabetes, much remains to be understood about its underlying causes and effective preventative measures. Flavonoids are naturally occurring phenolic compounds found in many fruits and vegetables that have various anti-inflammatory health benefits. Previous studies suggest that epicatechin, a flavonoid present in cocoa, can reduce the effects of diabetes by diminishing insulin desensitization and increasing glucose stimulated insulin secretion (GSIS). Interestingly, the bioavailability of epicatechin is poor, while its metabolites are more easily absorbed in the small intestine. Further studies demonstrated that under non-stressed conditions in beta-cells, hippuric acid, homovanillic acid, and 5-phenylvaleric acid, metabolites of epicatechin, stimulate insulin secretion at concentrations more realistically found in the body. However, the effects of these metabolites in glucolipotoxic conditions are unknown. Here, we present the effects of epicatechin and its metabolites hippuric acid, homovanillic acid, and 5-phenylvaleric acid on beta cell insulin secretion and mitochondrial respiration under GLT culture conditions. This study aimed to contribute to the limited body of knowledge on the bioactivity of flavonoid metabolites on beta cell function under damaging conditions observed with T2D, offering crucial insights for developing effective strategies to harness the health benefits associated with flavonoids.

Determining the binding partners of orphan nuclear receptor Nr4a3 and their effect on proliferation and insulin secretion in the beta cells

March 21, 2024 12:00 AM
Authors: Owen Damitz. Mentors: Jeffrey Tessem. Insitution: Brigham Young University. Type one and two diabetes affect the everyday lives of millions of people worldwide. These diseases are characterized by decreased functional beta cell mass. Functional beta cell mass is defined by the beta cell’s ability to proliferate, secrete insulin, and resist apoptosis. Wehave shown that the orphan nuclear receptor Nr4a3 is sufficient to induce beta cell proliferation. We have sought to define compounds that can interact with and modulate Nr4a3 activity. Using AutoDock Vina we have defined a number of compounds that interact with Nr4a3. Here wepresent data demonstrating the ability of these compounds to modulate Nr4a3 mediated proliferation, survival, and insulin secretion in the beta cell. Furthermore, we demonstrate the effect of these compounds to modulate Nr4a3 transcriptional control. These findings are the basis for developing interventions to increase functional beta cell mass as a treatment for type 1 and type 2 diabetes.

Understanding Refractory Status Epilepticus with Novel HD-MEA Technology

March 21, 2024 12:00 AM
Authors: Isaac Stubbs, Skyler Russell, Melissa Blotter, Maxwell Holmes. Mentors: Ryley Parrish. Insitution: Brigham Young University. Status Epilepticus (SE) is a severe medical condition marked by continuous seizures lasting over 5 minutes. When SE becomes resistant to anticonvulsant drugs, the condition is known as Refractory Status Epilepticus (RSE), which lacks effective treatments and has a mortality rate of 38%. RSE lacks effective treatments partially due to our limited understanding of the mechanisms that lead to patient drug resistance to commonly used anticonvulsants. This study aims to address this knowledge gap in two pivotal ways.First, we have employed a high-density multi-electrode array (HD-MEA) with acute mouse brain slices to better understand RSE propagation patterns and various seizure states with unparalleled spatial precision. The HD-MEA allows us to record from the entire brain slice with 4096 electrodes sampling electrophysiological activity at every 60 micrometers for many hours at a time. Our data demonstrates that different seizure states, such as phasic seizure-like events, short duration epileptic discharges, or RSE itself, occur within both the same brain region and in different brain regions simultaneously. With our novel data visualization software, we can visualize the unique propagation of this phenomenon. These findings indicate that RSE might be a progressive event, challenging conventional understanding of RSE. Second, we are currently exploring a potential pharmacoresistance mechanism that may contribute to the patient entering RSE, which suggests that changes in the chloride reversal potential may lead to a phenomenon known as depolarizing GABA. Depolarizing GABA may negate the effectiveness of the currently used antiepileptic drugs that rely on standard physiological chloride conductance to effectively limit seizure activity. We are studying this drug resistant mechanism with the HD-MEA by introducing anticonvulsant drugs to acute mouse brain slices during the evolution of RSE to locate a critical point at which the slice becomes resistant to these compounds.We hope this study will illuminate the complexities of RSE by revealing its progressive nature and drug resistant properties.

Ultrasonic analysis of patellar tendon thickness in active older athletes

March 21, 2024 12:00 AM
Authors: Mikayla Kimball, Noah Bezzant, Ashley Allan, Josh Sponbeck. Mentors: Brent Feland. Insitution: Brigham Young University. Ultrasonic analysis of patellar tendon thickness in active older athletesBACKGROUND: Recent research has suggested that patellar tendon loading through exercise and resistance training can help maintain and increase patellar tendon thickness in older adults. Limited research exists that identifies the average thickness of patellar tendons in younger athletes, however, it is unknown if this thickness remains or is maintained in older adult athletes who have maintained a very active lifestyle.PURPOSE: This study aimed to determine how gender correlates to patellar tendon thickness in the proximal and middle patellar tendon of active older athletes participating in sporting events at the Huntsman World Senior Games.METHODS: Data was collected from 59 volunteers (participants in the Huntsman WorldSenior Games) in St. George, Utah, 2022. All subjects (34 females: mean age = 61.09 ± 7.00 yrs, Ht = 162.41 ± 25.73 cm, Wt= 66.29 ±11.38 kg; 25 males: mean age = 68.68 ± 7.03 yrs, Ht = 178.21 ± 8.63 cm, Wt= 84.42±10.90 kg) signed an approved consent form and then sat on a treatment table with their legs relaxed and dangling off. The probe was placed vertically below the kneecap and an ultrasonic image was taken. Each image showed a small section of the patellar for reference. Each ultrasonic measurement showed the middle and proximal thickness of the patellar tendon. ANALYSIS: All data were analyzed using JMP ver16.2 with a stepwise multiple regression analysis to determine the effect of age, height, wt and gender on patellar tendon thickness. A sex*location mixed model was used to determine differences in middle and proximal thickness between gender. Data were normally distributed, not requiring transformation.RESULTS & CONCLUSIONS: Proximal tendon measurements were thicker than middle tendon measurements on both sides (p=0.0001). There was no significant difference either proximal tendon thickness (p=0.9323) or middle tendon thickness (p= 0.3993) between left and right sides. No significant difference between male and female tendon thickness at either location (p=0.7700). Proximal tendon thickness was greater and this has been found to be greater in younger athletes with a history of patellar tendinopathy. Aging athletes may also have a history of knee pain episodes that could have contributed to this finding. The lack of gender differences in thickness measures was surprising, but may be a result of the level of activity of senior athletes. In the future studies should look to compare active vs non-active aging athletes, more specific age range differences, and how knee replacements and other injuries affect patellar tendon thickness.

Glutamine as an Acetyl-lysine Mimic in Nucleosome Positioning Studies

March 21, 2024 12:00 AM
Authors: Michael Mann, David Bates, Steven Johnson. Mentors: Steven Johnson. Insitution: Brigham Young University. Nucleosome positioning, or the placement of nucleosomes along DNA, is known to be a significant factor in determining gene expression in eukaryotic cells. Further, post-translational modifications (or PTMs) help modulate gene expression by acting as an intermediate to other factors. The extent to which PTMs directly affect nucleosome positioning is poorly understood, however. Since gene expression is known to be affected by several coincident PTMs on each histone, the goal of this research is to evaluate the suitability of a Lys-->Gln mutation as a substitute for histone lysine acetylation. If successful, this research can be used to support future combinatorial studies on PTMs and nucleosome positioning without the difficulty of combining several forms of PTMs simultaneously.

Neural Networks associated with Gait Apraxia

March 21, 2024 12:00 AM
Authors: Zach Fiore. Mentors: Jared Nielsen. Insitution: Brigham Young University. Gait apraxia is a type of apraxia that affects lower limb use in walking. It is characterized by difficulty initiating gait, freezing of gait, and other gait disturbances that cannot be attributed to complications affecting sensory, motor, or cerebellar function, psychiatric disease, nor ataxia. Symptoms often present following brain trauma. Previous research has indicated that gait apraxia may be linked to lesions in the frontal lobes, basal ganglia and supplementary motor area. However, the specific cerebral location has been debated with minimal research done on the symptom’s implicated neural circuits. The purpose of this study is to determine the networks in the brain that are involved in the pathophysiology of gait apraxia. To determine this, we used the lesion network mapping method. A systematic literature review was performed, with specific inclusion criteria, to find case studies of patients presenting with gait apraxia stemming from acquired brain injury (n=15). Lesion network mapping analysis (Fox et al., 2018) was performed on 15 cases with a large cohort of healthy control resting-state scans (n=1000). The analysis showed that lesions exhibited functional connectivity to the bilateral medial dorsal and pulvinar nuclei of the thalami (n=15), which supports previous associations of basal ganglia damage contributing to gait apraxia. A novel region, the cingulate cortex (n=15), was also found to be functionally connected to the lesion networks. This region is a part of the cingulo-opercular network, responsible for many functions, including action. This network has recently been found to display strong functional connectivity with the somato-cognitive action network, responsible for coordinating movements with cognitive processes. Further research is necessary to determine the mechanism of how these networks interact in contributing to gait apraxia.

Salt-Water Acclimation in Atlantic Salmon sheds light on claudin shifting and tight junction membrane proteins composition

March 21, 2024 12:00 AM
Authors: Joshua Hutchins, Kevin Wong. Mentors: Dario Mizrachi. Insitution: Brigham Young University. Tight junctions (TJ’s) are composed of mainly three types of cell-adhesion molecules (CAMs) that regulate paracellular permeability in epithelial and endothelial cells. These are claudins (CLDNs), occludin (OCLN), and junctional adhesion molecules (JAMs).There are, however, several (27) isoforms of the claudin molecule, all of which are suspected to have different strengths and other properties in cell adhesion. Currently, the comparative strength of the interactions between different CAMs are unknown and no easily replicable model of a TJ has been created. To address this question we resourced to bacterial expression of these mammalian proteins. MG1655 E. coli cells (with flagellum) were transformed to express claudins 1, 2, 3, 5, and 10 as well as occludin and plated on 0.2% agar plates, allowing them to swim overnight. This allowed for a qualitative spectrum of strengths of the CAMs based on how far the cells were able to spread throughout the plate. Cells that interacted strongly swam less. This technique was applied to the case of the Atlantic Salmon. It swims both in fresh and ocean water. As it transitions, the TJs in its skin changes its composition of claudins. We were able to determine that the set of claudins employed during ocean water swimming are capable of stronger strength. This is consistent with the changes in osmolarity dictated by the amount of solute in the ocean water.

Role Models v. Knowledge: Should we Use Different Evolution Teaching Strategies for Students with Varying Levels of Scientific Reasoning Skills?

March 21, 2024 12:00 AM
Authors: Grant Rousseau, Kenneth Harrington, Jamie Jensen. Mentors: Jamie Jensen. Insitution: Brigham Young University. We know that evolution acceptance is low in the United States, and a perceived conflict between evolution and religion is a big predictor of whether someone accepts or rejects evolution. Helping undergraduates accept evolution involves multiple teaching strategies, including teaching evolution with a reconciliatory approach, increasing their knowledge of evolution, and introducing role models (scientists who maintain religious beliefs) to the students. However, because some students have higher scientific reasoning abilities than others, they may find certain evolution teaching strategies more beneficial than others. In our study, we assessed scientific reasoning ability, change in evolution acceptance, and teaching strategy rankings with surveys before and after evolution instruction. We predicted that students who possessed more scientific reasoning skills would rank evolution knowledge above role models when asked which strategy was most influential in helping them accept evolution. However, we saw that scientific reasoning did not appear to moderate the effect of evolution knowledge. Role models were more important in increasing evolution acceptance, regardless of scientific reasoning skills. This reinforces the importance of having a role model present when teaching evolution to religious audiences.

Investigating Intraspecific Temporal Behavior in Mule Deer (Odocoileus hemionus) across Life Stages: Fawning and Non-Fawning.

March 21, 2024 12:00 AM
Authors: Danielle Terry, Seth Helton, Michael Creer. Mentors: Austin M Green. Insitution: University of Utah. With anthropogenic influence increasing worldwide, it is important to understand how wildlife behavior changes in response to urbanized landscapes. Urban ecosystems represent relatively novel landscapes with unique threats and opportunities that can completely restructure species’ population composition and dynamics. Mule deer (Odocoileus hemionus) have been shown to alter their temporal activity in response to urbanization across their range of the Intermountain West of the United States. In this study, we will investigate the effects of anthropogenic influence on mule deer temporal activity behavior across two distinct life stages: fawning and non-fawning. Data for this study will come from the citizen science camera trapping project, Wasatch Wildlife Watch. The full project area is separated into two study sites: “Rural” and “Urban”. This study will be based around the wild-to-urban interface of the Central Wasatch Mountain Range and the Bear River Mountain Range, which composes some of the most highly recreated portions of the Uinta-Wasatch-Cache National Forest, receiving approximately 9,000,000 visitors annually (U.S Forest Service). We will investigate the proposed differential effects of anthropogenic influence and urbanization on mule deer diel activity patterns in the fawning vs. non-fawning life stages. Also, we will inquire whether intraspecific responses in mule deer diel activity alter interspecific interactions, especially with fawning predators, and how these responses might interact with environmental factors. We predict that anthropogenic influence and urbanization alter the diel activity patterns of fawning mule deer more than non-fawning deer and that the presence and activity of fawn predators (e.g., coyote [Canis latrans]) would have a stronger effect on fawning deer activity than non-fawning deer activity.

The Grieving Process

March 21, 2024 12:00 AM
Authors: Becca fabis. Mentors: Alexandra Giannell. Insitution: Utah Valley University. On December 2nd my friend was killed by a hit and run driver while going on a run at night. It was right before finals. I was involved with the police and helped her family pack up all of my beloved friends belongings and watched as her daddy cried in her room. Words can’t express the agony I saw. Two months later I learned that another roomate (in a different apartment) her cousin had committed suicide. And we were the place everyone gathered. I held her cousin’s (who committed suicide) sister in my arms as she cried. Words cannot express the agony I felt for them.Then on the first day of school this semester (a month ago) my father suddenly passed away from a brain aneurysm. He was at the peak of health. My mom puked from sickness and shock, later got sick with other illnesses, (she’s doing a little better now) then my sister got sick and I was left to care for them on my own. There’s no words to express my exhaustion. The late nights of wandering my house making sure we were safe. Words have no ability to express my agony I’m in. After my roomate passed I created a painting. It’s called my grieving process because it’s of a house, the house represents me. In it through color you can see the process that grief can have on a person. I’m only 25, people say I’m too young to lose this many people. Perhaps they’re right. It’s an eerie painting and pretty odd when you look at it. I have had now three losses that have taught me that sometimes words aren’t enough. That it’s through art I can scream and it is documented. I would love to present on how creating art can be the breathe of fresh air one desperately needs in order to continue on in this fight we call life.

Genomic Characterization and Mass Spectrometry Analysis of Gordonia Phage SummitAcademy

March 21, 2024 12:00 AM
Authors: Sierra M Mellor, Madilyn Brandt, Nathaniel Eberhart, Samuel Flor, Julianne H Grose. Mentors: Julianne Grose. Insitution: Brigham Young University. Continued use of antibiotics has driven the evolution of antibiotic-resistant bacteria, which cause infections that prove difficult to treat. Therefore, it is crucial that alternative treatments for bacterial infections are developed. One such promising method, known as phage therapy, utilizes viruses that infect bacteria. However, compared to the high abundance of bacteriophages, relatively few have been isolated and sequenced, with little known about their gene products. Here we have isolated two phages, SummitAcademy and AJGecko, against the host bacteria Gordonia rubripertincta. Gordonia belongs to the Actinobacteria class containing many pathogenic bacteria, including Mycobacterium tuberculosis, and so analysis of SummitAcademy and AJGecko can provide insight into the evolution of this family. Genomic comparison of conserved genes between SummitAcademy and other Gordonia phages identifies 14 hypothetical proteins as unique to SummitAcademy. Subsequent liquid chromatography mass spectrometry (LC-MS) of CsCl-purified SummitAcademy confirms expression of many predicted gene products, verifying the annotation. Several peptides generated through mass spectrometry also provide evidence for extending predicted start sites of gene products. Further characterization of virion proteins and gene products of SummitAcademy can add to the overall knowledge of this cluster of phages and potential phage therapies against Gordonia or related infections.

Analysis of Estrous Cycle in POMC-deficient mice

March 21, 2024 12:00 AM
Authors: Isaac Gillins, Zoe Thompson. Mentors: . Insitution: Utah Valley University. The pro-opiomelanocortin (POMC) gene is expressed in the hypothalamus and pituitary and is cleaved into several peptide hormones. One of these is melanocyte-stimulating hormone (MSH), which is involved in food intake and energy expenditure. A mutation in the POMC gene can result in a rare condition in which the subject displays early-onset obesity characterized by severe hyperphagia (i.e. excess hunger). Affected subjects may also show a lack of pubertal development. In this experiment, we will study mice with a mutation in the POMC gene. They show some of the same symptoms as humans with a POMC mutation, including hyperphagia, obesity & infertility. Specifically, we will investigate the estrous cycle in female mice to determine if they are cycling normally. The estrous cycle, similar to the menstrual cycle in humans, is characterized by changes in reproductive hormones, and can be divided into four stages: proestrus, estrus, metestrus, and diestrus. Cells lining the surface of the vagina have been previously collected using a pipette smear technique. Each stage can be characterized by the proportion of three cell types: epithelial cells, cornified cells, and leukocytes. These cells correspond to the fluctuating hormone levels during the estrous cycle. Images of these samples will be assessed for the composition of cells to determine the stage of the estrus cycle, and whether or not the cycle displays normal patterning. Because POMC-deficient mice are infertile, we hypothesize their estrous cycles may be atypical. For example, the estrous cycle of the POMC-deficient mice may appear in irregular order or with one stage being predominant over the rest. If the estrous cycle is atypical, then we will measure the hormones directly to confirm that the infertility is caused by changes in hormonal regulation. This will help us to understand more about how the POMC gene affects reproductive function.

Enhancing Emotional Resilience among American Samoan Children: Lessons from a Community-Based Intervention

March 21, 2024 12:00 AM
Authors: Lexi Todd, Jessica Jespersen, Isabel Medina Hull, Mary Crawford, Taylor Powell, Ashley Roberts, Melia Fonoimoana Garrett, Kris Urbina, Elizabeth A Cutrer. Mentors: Elizabeth A Cutrer. Insitution: Brigham Young University. Background: American Samoan children face significant mental health challenges, including high levels of depression and anxiety, often escalating to suicidal thoughts and behaviors during adolescence. Addressing this issue, our study collaborated with community leaders in American Samoa to develop and implement five tailored lesson plans aimed at teaching 35 elementary school children resilience strategies for emotional self-regulation. Method: Employing Multimodal Interpretative Phenomenological Analysis (MMIPA), we examined students' drawings depicting their emotions of sadness, anger, and fear before and after the intervention. The analysis focused on understanding the impact of the lesson plans on students' emotional regulation strategies. Results: Post-intervention, our findings indicated a notable improvement in students' ability to regulate their emotions, particularly fear. Through the lesson plans, students acquired practical skills and coping mechanisms, allowing them to better manage their emotions. This positive shift in emotional regulation suggests that the intervention played a significant role in enhancing students' resilience, specifically in dealing with fear-related emotions. Conclusion: Our study underscores the effectiveness of a community-based intervention approach in addressing the mental health challenges faced by American Samoan children. By providing targeted resilience-focused lessons, students demonstrated improved emotional self-regulation, particularly in managing fear. These findings highlight the importance of culturally sensitive interventions and community collaboration in promoting mental well-being among vulnerable populations.

Crest Factor Analyses for Launch Vehicle Noise

March 21, 2024 12:00 AM
Authors: Zach Hendry, Carson Cunningham. Mentors: Micah Shepherd, Kent Gee. Insitution: Brigham Young University. The number of rocket launches per year has been increasing dramatically since 2015, with more rockets launched in the year 2022 than had ever been launched. With the increase in the number of launches per year, it has become increasingly important to understand the impact of rocket launches on the greater environment and community. One important aspect of a rocket launch is the level of acoustical energy that is produced during liftoff. Instantaneous pressure values have been regularly recorded up to 180 dB. Due to these high levels, it’s become important to be able to accurately predict the noise produced by a rocket. One powerful tool used in predicting this sound is the crest factor. The crest factor is an acoustical measurement that shows the difference between the maximum sound pressure (i.e. the crest) compared against the averaged value of the sound pressure. Additionally, this information is vital for planning acoustical equipment in order to avoid measurement clipping. This presentation will be about crest factor analyses performed on the Antares NG-19 rocket launch from August 2023.

Exploring the Use of Virtual Reality to Teach Academic, Behavioral, Independent Living and Social Skills to individuals with Disabilities

March 21, 2024 12:00 AM
Authors: Megan Sorensen, Lianna Olsen, Maleah Bowen. Mentors: Ryan Kellems, Cade Charlton. Insitution: Brigham Young University. This research explores how virtual reality can help children with autism. It explores the effects of an intervention using virtual reality to assess the usability of virtual reality for children with autism.There are more than 200 studies that show that video modeling is a viable way to teach students with autism various skills. Research has started to explore if virtual reality is also a successful way to teach students with autism similar skills. Different studies have been conducted regarding social skills and cognitive skills and how they can be taught using virtual reality. There is very little research about fine-motor skills and virtual reality for individuals with disabilities. Our research adds to that research, but specifically explores fine-motor skills and the feasibility of using virtual reality with children with autism. The study uses a single subject research design with 5-10 participants with autism. Before starting data collection, the participant completes a brief tutorial for how to use virtual reality. One tutorial is for how to use the controllers and the other is for how to use the hand-tracking feature that allows the participant to use their hands instead of the controllers. The study is an alternating-treatment design. The individual is given a specific task to complete using the playroom items found in the “First Steps” application on the Oculus Quest. For example, they are asked to stack blocks, throw paper airplanes, etc. They either complete the task using the controllers or with the handtracking feature based upon a random schedule and the latency of the trial is measured. The data compares hand-tracking and controllers and measures whether the participant is getting faster with every trial. It was hypothesized that the students will be able to learn how to use the virtual reality interface and that they will be able to generalize the skills learned to other settings and/or skills, and that the interventions will be viewed by the participant and parents as socially valid ways to learn. It was anticipated that the participant will get increasingly faster at completing the tasks for both hand-tracking and with the controllers. It was also anticipated that the rate of completing tasks with controllers will be faster than that of hand-tracking. Preliminary date has shown this relationship to be true. Future research will explore the specific practices of how virtual reality can be best used for children with autism.

Glucose concentration’s effect on binding interactions beta cell transcription factors Nkx6.1 and Pdx1 and subsequent transcriptional regulation of downstream targets

March 21, 2024 12:00 AM
Authors: Nathan Vaughan. Mentors: Jeffery Tessem. Insitution: Brigham Young University. Diabetes Mellitus is a chronic disease characterized by a loss of functional beta cell mass, and impaired glucose homeostasis. Elevated glucose levels in the body are known to be the cause of a plethora of debilitating illnesses. Hyperglycemia negatively effects beta cell function, resulting in impaired insulin secretion and cell death. Two key transcription factors involved in beta cell development, function, and proliferation are Nkx6.1 and Pdx1. We have shown a binding interaction between these Nkx6.1 and Pdx1 and have shown that they co-regulate various genes necessary for beta cell maturity and function. Preliminary data indicate that elevated glucose concentrations downregulate Nkx6.1 mRNA and protein, as well as Pdx1 mRNA. However, the effect of elevated glucose concentrations on Pdx1 and Nkx6.1 binding interaction and subsequent function remains largely unexplored. Here we demonstrate the effect of hyperglycemia on the Pdx1-Nkx6.1 interaction, and the effect on expression of Pdx1 and Nkx6.1 downstream target genes. Understanding the effect of hyperglycemia on this interaction will allow us to better understand the stress that a beta cell is under during diabetic conditions, and to develop interventions to ameliorate these effects.

Navigating Neurodiversity Online: Inclusive Educational Materials for Autistic Learners

March 21, 2024 12:00 AM
Authors: Sara Peel, Addisyn Bushman, Adam Rice. Mentors: Xinru Page. Insitution: Brigham Young University. Social media has become a tool used in everyday life by individuals worldwide. While this tool can help individuals build new social connections and strengthen relationships, it can be a lose-lose situation for certain populations. Recent work has found that autistic users are one of these populations that experience greater harm and negative experiences using social media. These additional harms stem from differences in how autistic individuals perceive social media norms and interpret online interactions. We have developed 16-week’s worth of digital educational material based on this research to teach autistic young adults social media literacy for Facebook and Instagram, to mitigate some of these social media challenges. With input from a multi-disciplinary team of autism researchers and a panel of autistic students at our university, we created these educational materials to be taught in 1-hour weekly sessions to individuals with autism in a classroom environment. The materials consist of topic-based slides and associated practice exercises that employ a decision-based learning approach that breaks down complicated decisions into several simpler choices. To determine whether participants have learned safer online behaviors, we administer scenario-based assessments at the beginning and end of each session, conduct daily diary-based check-ins, and weekly one-on-one interviews, and analyze behavioral data collected from their personal social media accounts such as posted comments and responses to connection requests.We are currently deploying the 16-week educational course at a local day program to autistic young adults who have no intellectual disability and have had negative experiences using social media. Initial results indicate that the educational materials are helping mitigate the harms of social media. Participants have shared that the educational sessions taught them to disconnect from potentially unsafe users, learn social tags and interaction norms, and change safety settings within each app that they weren’t aware they had control over. In addition to the current longitudinal study, we have several other field deployments planned in the coming months which will allow us to refine the digital assets for this educational intervention in preparation for making them available to the public.

Dance and Music: Pathways for Success

March 21, 2024 12:00 AM
Authors: McKayla Pehrson, Emily Hyde. Mentors: Lyndsey Vader. Insitution: Utah Valley University. Emily Hyde and McKayla Pehrson acknowledge that social factors and life circumstances can provide barriers to success, defined as the ability to implement life skills such as self-discipline, creativity, and perseverance. They address how practitioners and educators can use dance and music to reduce barriers. Hyde and Pehrson engage in discourse analysis of recent scholarship, analyzing trends and outcomes in the cognitive, emotional, physical, and social benefits of arts-based interventions. Their research asks: What cognitive benefits are identifiable through dance and music training? What life skills are taught through the study of both music and dance? What are the benefits of dance and music in advancing different learning styles? What is the importance of administrative support and community-academic partnerships when it comes to arts-based learning? Importantly, their research examines specific national and international training programs that use music and dance as a Life Coaching methodology. The presentation of their discursive findings foreshadows field work and data collection that they will undertake in the summer of 2024. Hyde and Pehrson’s research focuses on the impact of teaching essential life skills through dance and music education. While dance education scholarship addresses positive learning outcomes of arts access, contemporary research does not adequately address how dance educators can receive training as life coaches to enhance their teaching practices. Their research will provide valuable discoveries advancing the conversation about how dance and music are beneficial to the development of life skills and crucial for the success of young learners. Simultaneously, they will offer insight around training programs that help prepare future dance educators to teach these life skills in the classroom.

Using Snapshot Camera Trap data to evaluate the extent of the “weekend effect” across varying climatic regions of the contiguous United States.

March 21, 2024 12:00 AM
Authors: Austin Green, Gaby Karakcheyeva. Insitution: University of Utah. As the world’s human population continues to concentrate within urban areas and these landscapes continue to expand worldwide, wildlife is under pressure to adapt to novel environmental disturbances. Along urban-wildlife gradients, and especially within less developed areas, human recreation can affect wildlife behavior. These effects may be most apparent during peaks in human recreational activity. In addition, climatic conditions such as aridity and precipitation can also alter wildlife behavior. Understanding the interactions between these two pressures, human activity and climate, can help us understand how wildlife behavior will be affected as human populations grow and climate warms. In this study, we will use data from a large-scale citizen science camera trapping project to assess whether periodic increases in human recreational activity paired with arid climates will elicit behavioral responses across multiple mammal species in northern Utah, U.S.A. Specifically, we will assess whether increases in human recreational activity during the weekend affected mammalian temporal activity patterns at the community-wide and species-specific level, taking into consideration if these trends are amplified in areas that are arid and low in precipitation. I hypothesize that increased human recreational activity will alter wildlife behavior, in general, however this change in behavior will be amplified in drier, hotter areas. I predict that during the weekends human activity will increase, leading to general decreases in activity, mobility, and breeding behavior across species, and this will be amplified in hotter and less vegetated areas. However, I predict that naturally diurnal species will be more affected than nocturnal species as they attempt to avoid overlap with humans, leading to changes in species-species interactions.

Ballet, Film, and Mythology: A Focus on Persephone

March 21, 2024 12:00 AM
Authors: Samantha Marx, Jessa Wright, Nathan Dobbin. Mentors: Christa St John. Insitution: Utah Valley University. Goddess of Spring and Death(2023) is a dance for film co-created by three Utah Valley University undergraduates focusing on retelling of the Ancient Greek myth of Persephone and Hades through a new perspective. Throughout time, stories are often retold; however, this myth has rarely been told from Persephone’s point of view. With a collaboration between the two disciplines of ballet and film, there was opportunity for a more intimate viewing of narrative-based choreography with creative camerawork and post-production editing. The purpose of this presentation is to disseminate research from the dance for camera: Goddess of Spring and Death(2023) in addition to how this collaboration affected both disciplines. The traditional myth tells of the story of Hades kidnapping Persephone to the Underworld and marrying her, typically focusing on the actions of Hades and Demeter. However, the researchers’ collective focus of this narrative was to include Persephone’s agency. The narrative still follows a similar plot to the original myth however, Persephone’s character was more developed as she was given the agency to go into the Underworld and eat the pomegranate of her own free will. An unlikely format for this narrative, the respective areas of ballet and film have become a popular collaboration, especially post-COVID. Stereotypically, narrative ballets are commonly performed on a proscenium stage while film works with verbal narratives. Both disciplines were challenged to explore and collaborate together in a field that is not yet standard. The experience for all on the project, including the dancers and crew, was that of gaining new learning that can be applied in the post-graduate fields.

ROSflight: A Lean Research Autopilot

March 21, 2024 12:00 AM
Authors: Jacob Moore, Ian Reid, Brandon Sutherland. Mentors: Tim McLain. Insitution: Brigham Young University. Autonomous unmanned aerial vehicle (UAV) research depends on autopilots capable of integrating new, low-level estimation and control algorithms. Current autopilot software stacks (eg. PX4 and Ardupilot) are bulky and complex, making it difficult for researchers to easily integrate their own algorithms. The codebases for these autopilots are fully-featured, meaning complete understandability is impossible. Furthermore, these autopilots are targeted towards industry and plug-and-play use, not researchers. A research-centered autopilot, with a lean codebase, capable of easy algorithm integration is a needed tool for productive research. ROSflight is an autopilot designed from the ground up with researchers in mind. Currently it is based on a ROS1 framework, which is old and outdated and is reaching end of life. Our research is to update ROSflight to ROS2, the most current version of ROS. Our work includes revamping the existing fixed-wing autopilot, ROSplane, and multirotor autopilot, ROScopter, and extending ROSflight to support vertical takeoff and landing (VTOL) aircraft. Since we started the project, ROSplane and ROSflight now work under a ROS2 framework. We have verified autonomous flight on a fixed wing aircraft, capable of rejecting disturbances. Hardware demonstration of a GPS waypoint-following fixed wing aircraft is in progress. Future work includes hardware demonstration of a multirotor aircraft autopilot and support for a VTOL aircraft.

Assessment of the Use of Phragmites australis as a Biomarker for Trace Metal Pollution

March 21, 2024 12:00 AM
Authors: Aljexi Olsen, Hali Lukacs. Mentors: Eddy Cadet. Insitution: Utah Valley University. Utah Lake is the third-largest freshwater body west of the Mississippi River and serves as a vital resource for just over 600,000 Utah Valley residents through agriculture, residential and recreational purposes. In addition to its utility, Utah Lake provides a haven for biodiversity for numerous species within its wetlands. Despite its utility and importance, the lake faces two significant challenges in the form of Trace Metal (TM) pollution and the encroachment of invasive plant species known as Phragmites australis (P. australis). Despite considerable investments of time, money, and resources by various state agencies to address these concerns, their success has been limited due to the agency’s isolated efforts for these large multifaceted issues. TM, though naturally occurring in the environment, has been found to be toxic to both people and the ecosystem when at elevated levels. P. australis, is a robust and fast-growing macrophyte, possessing remarkable adaptability to and tolerance for poor soils, enabling it to rapidly outcompete native species. Due to P. australis resilience and aggressive nature, many colonies have grown around the lake regardless of soil conditions. Studies have shown that P. australis has been utilized for remediation purposes around water bodies by extracting TMs from sediment. While P. australis must be addressed, can it be used as part of the solution by identifying TM polluted areas? This study aims to discern the variety in TM absorption by P. australis in both unpolluted and polluted sites in the wetlands surrounding the hyper-eutrophic Utah Lake. We selected nine sites around Utah Lake, considering their land use and proximity to pollution sources. At each site, three replicate samples encompassing P. australis, soil, and water were collected. These samples underwent a meticulous process, including washing, weighing, grounding, sieving, acid digesting using a CEM MARS 6, and analysis for TM content within an ICP-MS. Our preliminary findings reveal that in both unpolluted and polluted sites, soil concentrations of As and Cd exceeded background levels (11.73, 1.53 in unpolluted sites, and 27.47, 6.63 in polluted sites, respectively). Notably, in select polluted sites, such as UVU, P. australis displayed a remarkable capacity to hyper-accumulate As, with a transfer factor of 167.14% compared to the lowest unpolluted sites, like Lindon, which showed a rate of about 10%. Across all sites, the accumulation of Cr was relatively consistent (ranging from 17.13 to 19.7 ppm), irrespective of biomass. The examination of TM concentrations, transfer factor rates, and TM accumulation based on biomass suggests that P. australis may serve as a valuable biomarker for identifying TM-polluted sites. This research holds significant relevance, as it could offer state agencies a swift and effective means to pinpoint TM-polluted areas. Moreover, the areas where P. australis is thriving may be leveraged for phytoremediation efforts in TM-contaminated sites, providing an environmentally friendly solution to address this pressing concern.

Using Machine Learning to Control Soft Robotics

March 21, 2024 12:00 AM
Authors: Jacob Adams, Larry Catalasan. Mentors: Tianyi He. Insitution: Utah State University. Soft robotics is a field of robotics involving the controlled movement and manipulation of soft materials to fulfill tasks that standard robots cannot. In this project, we aim to create a soft robotic arm capable of movement by using a machine-learning algorithm to generate its subsequent moves. To fulfill this goal, the robotic arm is contained in a metal frame that has cameras monitoring its position. The camera feed is then processed through a machine-learning algorithm into instructions that can be used to pull various strings attached to the arm which will allow the arm to move. Currently, our team has finished building the frame/arm as well as software that can use cameras to map the position of the arm. The next steps in this project are to research and implement a machine-learning algorithm and write a program that can appropriately adjust stepper motors to pull the strings.

Implementing Quality Control for the Fluorescent Coating of Intravenous Catheters

March 21, 2024 12:00 AM
Authors: Melissa Wiggins, Aaron Bigelow, Porter Ellis. Mentors: Ronald Sims. Insitution: Utah State University. Ensuring that the hydrophilic coating of Merit Medical’s Prelude IDeal trans-radial catheter is necessary for its biocompatibility and patient safety. The current method for testing the coating involves a test using Congo Red Dye. The Congo Red Dye does work, but the dye is toxic and all tested catheters must be discarded after testing. The Conge Red Dye test results in wasted catheters. A new method for testing the coating uses fluorescent particles. First, fluorescent particles are added to the hydrophilic coating. These fluorescent particles can be easily visualized on the catheter using UV light. Thus, the uncoated portions of the catheter can be visualized as well. The coated catheters are placed into a black box that ensures only the catheter is being seen. A line scan camera is used to take pictures of every side of the catheter as the catheter spins. Photos of the scanned catheter are then linked together, showing the entire circumference in one picture. The catheter is ultimately tested by analyzing the full picture to find any uncoated regions. By using software to analyze the full picture, the size of uncoated regions is determined with greater accuracy. This new method allows for tested catheters to be used after testing and does not involve any toxic chemicals.

Exploring the Quasi-Static Compression Characteristics of Origami-inspired Foldcore Sandwich Composite

March 21, 2024 12:00 AM
Authors: Chase Mortensen, Juhyeong Lee. Mentors: Juhyeong Lee. Insitution: Utah State University. Foldcore sandwich composites (FSCs) are constructed using multi-layered sheets folded in a desired pattern and placed between two thin face sheets. The choice of material geometric folding pattern provides a large design space to optimize the structural performance of FSCs. These composites are typically made of carbon fiber reinforced polymer (CFRP) composites, offering lightweight and high-energy-absorbing properties. This work aims to characterize the size effects of unit-cell foldcores by analyzing the influence of subscale foldcore models subjected to periodic boundary conditions under quasi-static compression. Three Miura-based unit-cell foldcore models were considered: (1) 1×1, (2) 1×2 (two 1×1 unit-cell foldcores connected in parallel), and (3) 2×1 (two 1×1 unit-cell foldcores connected perpendicularly). Through finite element modeling, three key findings were derived: 1) the finite element model closely replicated experimental results; 2) the application of periodic boundary conditions had an insignificant impact on subscale foldcore models. Third, inconsiderable variations in stress and damage were observed primarily along the foldcore creases when unit-cells were placed in parallel.

Arm Modeling in Preparation for Wearable Mobility-Enhancing Elbow Brace

March 21, 2024 12:00 AM
Authors: Samuel Stearman, Benjamin Crapo, Antonio Trujillo. Mentors: Jeff Hill. Insitution: Brigham Young University. Our goal at BYU SMASH IT lab is to improve patient’s mobility in rehabilitative settings. For this purpose, we’re modeling the human arm to aid in our design of wearable rehabilitative sleeves. We are investigating methods for manipulating elbow flexion and extension using an assistive elbow brace, such as through cable-driven movement and the less used concept of tensegrity. The appeal of these methods is their flexibility, lightweight, and multiple degrees of freedom in movement. In the prototyping stage we’ve created a test stand resembling a human arm that we use to evaluate how our elbow brace would interact with the wearer and measure the forces between the arm and the brace. Measurements from these tests will aid in our design of a future elbow brace. Knowledge gained from this work has the potential to apply to other joints, each with their own rehabilitative and other uses.

Investigation of the Representative Volume Element in Fibrous Porous Systems

March 21, 2024 12:00 AM
Authors: James Walker. Mentors: Pania Newell. Insitution: University of Utah. During the COVID-19 pandemic, the discussion of using fibrous porous materials in the context of face masks has gained significant relevance. These materials consist of networks of fibers that are intertwined through weaving, knitting, or bonding, creating a structure with interconnected pores that facilitate the transport of gasses and liquids. When a face mask is used, it is under tensile stresses that can greatly affect its longevity and behavior, and simulating the behavior of the fibers within the mask under this loading is essential in enhancing its robustness. Numerical analysis involving fibrous porous materials is challenging due to their inherent randomness and anisotropy, however. The models we use need to accurately represent the entire mask, which we achieve using a small cubic cell known as a representative volume element (RVE). In this study, we systematically investigate the role of fiber diameter, fiber cross sectional shape, and RVE size on the mechanical properties of various RVEs using a computational framework built on the finite element method. The RVEs themselves are idealistic, but useful networks of polypropylene fibers that are orthogonally intersected within cubic boundaries. Our results show that once an appropriate RVE size was determined with constant porosity between systems, the stiffness of the samples increases as the cross-sectional shape progresses from a triangle to a square, to a pentagon, etc., largely due to the increases in intersection volume between fibers. We also found that increasing the diameter serves to increase material stiffness. This project not only offers insights into designing more robust face masks but also provides novel tools that can be used for designing other fibrous porous materials.

The effects of invasive competition on the phytochemistry of cottonwoods

March 21, 2024 12:00 AM
Authors: Jessica Crook, Brooke Parker, Michael C Rotter. Mentors: Michael C Rotter. Insitution: Utah Valley University. Fremont cottonwoods are a foundation species throughout the Wasatch front. Cottonwoods face a competitive threat from the invasive tamarisk, which grows very easily in the same habitats. Tamarisk can have a negative impact on cottonwoods, displacing them. The loss of cottonwoods could have negative impacts on ecosystems. This study will examine phytochemical compounds in cottonwoods, and how they are affected by growing in competition with tamarisk. We hypothesize that cottonwoods growing in competition with non-native tamarisk will be stressed and produce higher levels of phytochemical compounds. To test our hypothesis, cottonwoods were grown in pots from cuttings either in competition with a tamarisk cutting, or alone. We then tested total phenolics using a ferric chloride solution, and tannin content using a radial diffusion method. It’s predicted that due to the stress of competition, cottonwoods that grew with tamarisk will have higher overall phenolics and tannins than cottonwoods that were grown on their own. The results of this trial could be important in influencing beaver foraging patterns. Since beavers prefer trees with elevated levels of phenolics and other phytochemicals, this could imply an important mechanism allowing tamarisk to invade an area by stressing cottonwoods and encouraging beaver foraging on these plants.

An Integrated Microfluidic Model of Subretinal Tissue to Study Age-Related Macular Degeneration

March 21, 2024 12:00 AM
Authors: Sophia Hessami. Mentors: Elizabeth Vargis. Insitution: Utah State University. Age-related macular degeneration (AMD) is the leading cause of blindness in developed countries. During later stages of AMD, immature blood vessels penetrate Bruch’s membrane and release fluid into the subretinal space. This process is referred to as choroidal neovascularization (CNV). Current in vitro models of retinal tissue are limited, so we propose a three-layered microfluidic model of the subretinal tissue, consisting of retinal pigment epithelium (RPE), Bruch’s membrane (BrM), and choroid. We have produced models of BrM using hagfish proteins that are more mimetic to the nonporous, proteinaceous BrM that is seen in vivo. Then, we fabricated a three-layered microfluidic device using the BrM models and polydimethylsiloxane (PDMS). Once the devices were assembled, porcine primary RPE were isolated, cultured, and characterized in the upper channel of the microfluidic device. Going forward, HUVECs will be cultured and characterized in the lower channel of the device. Then, primary RPE and HUVECs will be co-cultured and characterized within the device. The result will be a multilayered microfluidic device containing primary porcine RPE, hagfish protein BrM models, and human umbilical vein endothelial cell (HUVEC) choroid. It is expected that RPE protein secretions will diffuse through the BrM models and initiate interconnected vascular network formation in the endothelial cells. In the future, we will induce chemical hypoxia to turn this model into a diseased model of the subretina. We hypothesize that this in vitro model of the subretinal tissue will lead to a better understanding of the mechanisms of CNV initiation and progression in AMD.