Medicine and Health Sciences Commons^™

Topographical Distribution And Morphology Of Sympathetic Postganglionic Innervation And Chronic Intermittent Hypoxia (Cih) Induced Remodeling Of The Whole Heart At Single Cell/Axon/Varicosity Scale, Ariege Bizanti

Electronic Theses and Dissertations, 2020-

The sympathetic nervous system is crucial for controlling multiple cardiac functions and its overactivity is associated with many cardiovascular diseases (CVD). Chronic intermittent hypoxia (CIH) is a current model for sleep apnea, which constitutes a major risk factor for CVD through sympathetic overactivity. However, a comprehensive neuroanatomical map of the sympathetic innervation of the heart is unavailable which impedes our understanding of the remodeling of this map in pathological conditions. First, we used a combination of state-of-the-art techniques, including flat-mount tissue processing, immunohistochemistry for tyrosine hydroxylase (TH, a sympathetic marker), confocal microscopy and Neurolucida 360 software to trace, digitize, and …

The Effect Of L-Citrulline Supplementation On Blood Pressure: An Updated Systematic Review And Meta-Analysis Of Randomized Controlled Trials, Vraj Amin

Honors Undergraduate Theses

Cardiovascular disease remains one of the most prevalent diseases in the United States and has remained as the leading cause of death. Large Mendelian randomization studies have found significant correlations between high blood pressure and cardiovascular disease (CVD). In fact, high blood pressure is the single most important independent risk factor for CVD. The purpose of this study was to determine the effect of L-citrulline on blood pressure to determine whether it could be advised as an effective treatment for high blood pressure. L-citrulline is a naturally occurring amino acid that readily converts to L-arginine within the human body. L-arginine …

Split Catalytic Probes For The Detection Of Monkeypox Virus, Jaehyun Ahn

Honors Undergraduate Theses

The COVID-19 outbreak highlighted the important role that diagnostic tests play in the healthcare system. To reduce the impact of infectious disease outbreaks, the development of rapid and cost-effective point-of-care-tests (POCTs) is crucial. With the dissemination of the Monkeypox (Mpox) virus, it became a necessity to produce POCTS that are inexpensive and easy to use. This work explored the construction of two colorimetric assays that aim to detect Mpox genetic signatures. One is based on the split-peroxidase-like deoxyribozyme probes (sPDz), while the other utilizes a cascade system of split RNA-cleaving deoxyribozyme (sDz) and peroxidase-like deoxyribozyme (PDz). Both rely on catalytic …

Role Of Endoplasmic Reticulum Stress Response In Parainfluenza Virus Acute To Persistent Infections, Lauren L. Abbitt

Honors Undergraduate Theses

Persistent viral infections are a major health concern, with persistently infected (PI) cells being a source of continued shedding of virus and generation of viral mutants. Here, we hypothesized that cells persistently infected with the enveloped virus parainfluenza virus 5 (PIV5) would show altered expression of endoplasmic reticulum (ER) stress proteins and increased resistance to death caused by drug-induced ER stress. To test this, lysates of mock-infected, PIV5 acute-infected, and PIV5 PI human lung A549 cells were collected and levels of ER stress proteins were compared. Western blotting revealed that immunoglobulin heavy chain binding protein (BiP/GRP78) was present in higher …

Acute Myocardial Infarction Among People Living With Hiv: Comparing Immunological And Virological Control By Hispanic Ethnicity Of The All Of Us Research Program Participants, Eugenio Reina

Honors Undergraduate Theses

In the United States, individuals of Hispanic ethnicity receive disproportionately lower-quality healthcare. These healthcare disparities exacerbate unequal access to quality healthcare services, including disparities in cardiovascular disease (CVD) and human immunodeficiency virus (HIV) care. Research on the role of ethnicity on the CVD outcomes of people living with HIV (PLWH) has been limited. We hypothesize that immunological (CD4+ cell count) and virological (HIV viral load) control may play a role in the development of acute myocardial infarction (AMI) among PLWH, and that Hispanic ethnicity may worsen these outcomes.

To verify our hypotheses, we conducted a retrospective cross-sectional study to investigate …

An Examination Of Lung Cancer Treatment Characteristics On Lung Cancer Patients With Co-Existing Heart Disease, Elias Rhanime

Honors Undergraduate Theses

With the rising rates of heart disease incidents in the United States and the increase in lung cancer deaths as well, many individuals suffer and get their treatments compromised due to these diseases. Especially considering that many lung cancer and heart disease patients are over 70 years of age, treatment options and success rates drop significantly. Due to this, a great concern is raised for patients with co-existing heart disease and lung cancer. This was a case-control study that assessed lung cancer treatment options and success rates for patients with co-existing heart disease. We used research papers that discussed lung …

An Investigation Of The Relationship Between Respiration And Seismocardiographic Signals Using Signal Processing, Machine Learning And Finite Element Analysis, Tanvir Hassan

Electronic Theses and Dissertations, 2020-

Cardiovascular disease (CVD) is one of the major causes of death worldwide. Disease management, as well as patient health, can be significantly improved by early detection of patient deterioration and proper intervention. Review of the patient's medical history and physical examination including stethoscope auscultation and electrocardiograms (ECG), echocardiography imaging, numerous blood testing, and computed tomography are common means of evaluating cardiac function. Seismocardiographic (SCG) signals are the vibrations of the chest wall due to the mechanical activity of the heart. These signals can provide useful information about heart function and could be used to diagnose cardiac problems. The variability in …

Stress, Coping, And Disease Awareness With Metabolic Disease Risk: A Longitudinal Cohort Study, Chelsea Anestal

Honors Undergraduate Theses

College students undergo stressors (e.g., potential financial strain, changes in workload or location), which may precipitate metabolic syndrome (MetS) risk associated with obesity and high blood pressure. Concerning rises in young adult obesity and type 2 diabetes, prompt study into MetS risk factor prevalence and awareness in youthful populations transitioning to new environments, such as college. This study assessed perceived stress, coping resources, and disease awareness differences in the first time on campus and final-year students associated with MetS risk factors (elevated body mass index (BMI) and blood pressure). We hypothesized lower stress perception, lower weight gain and blood …

Diabetes Mellitus Among Black/African Americans: A Critical Discourse Analysis Of Epigenetic Research, Eliana Jacobs

Honors Undergraduate Theses

During their lifetime, Black/African Americans have a higher likelihood of developing the diabetes mellitus metabolic disorder than other racial and ethnic groups in the United States. While research indicates that socioeconomic status, diet, and obesity factor into race disparities, the epigenetics field additionally identifies historical and contemporary racism as contributors to race disparities. This study is a qualitative analysis that examines a sample of health science research articles that use an epigenetics approach to understand diabetes among Black/African Americans. I analyzed the extent and mechanisms through which articles subtly reproduce dominant stereotypes of Black/African Americans and diabetes through representations of …

The Relationship Between Sarcopenia And Diabetes Among Different Ethnic Groups, Rachel K. Williams

Honors Undergraduate Theses

Sarcopenia and diabetes are two conditions that reflect ongoing changes in global health trends: aging and obesity. Sarcopenia affects approximately 10-40% of the global population and type II diabetes affects around 415 million individuals (6.28% globally), with obesity contributing to a majority of the cases. Currently, approximately 9.3% of the population (727 million individuals) is aged 65 years or older; this number is predicted to reach 16% of the global population (around 1.5 billion individuals) in 2050. Many developed countries are undergoing demographic population pyramid rearrangements whereby an increasingly aging population must be supported by a shrinking youth cohort. Sarcopenia …

Reexamining Cytolethal Distending Toxin's Host Cell Entry And Trafficking: The First Steps Down A Long Road, George Huhn

Electronic Theses and Dissertations, 2020-

Cytolethal distending toxin (CDT) is a virulence factor produced by many Gram-negative bacteria, including Haemophilus ducreyi, the causative agent of genital chancroid. CDT is a heterotrimeric toxin consisting of a cell-binding domain (CdtA + CdtC) and a catalytic domain (CdtB) that has DNase activity. After binding to the host plasma membrane, CDT undergoes endocytosis and travels through the endosomes en route to the endoplasmic reticulum (ER). Only CdtB and CdtC arrive in the Golgi before moving to the ER. Only then does CdtB move into the nucleus, causing DNA damage that induces cell-cycle arrest and apoptosis. The previous CDT trafficking …

Cholera Transmission Dynamic Model With Environmental Impacts Of Plankton Reservoirs, Sweety Sarker

Electronic Theses and Dissertations, 2020-

Cholera is an acute disease that is a global threat to the world and can kill people within a few hours if left untreated. In the last 200 years, seven pandemics occurred, and, in some countries, it remains endemic. The World Health Organization (WHO) declared a global initiative to prevent cholera by 2030. Cholera dynamics are contributed by several environmental factors such as salinity level of water, water temperature, presence of plankton especially zooplankton such as cladocerans, rotifers, copepods, etc. Vibrio cholerae (V. cholerae) bacterium is the main reason behind the cholera disease and the growth of V. cholerae depends …

Investigating The Role Of The Skeletal Muscle In Amyotrophic Lateral Sclerosis Neuromuscular Junction Dysfunction, Agnes Badu-Mensah

Electronic Theses and Dissertations, 2020-

Neuromuscular junction (NMJ) dysfunction has been identified as one of the earliest events in Amyotrophic Lateral Sclerosis (ALS) pathology. However, which tissue type induces NMJ disruption; be it the motoneurons (hMN), Schwann cells or skeletal muscle (hSKM) remains unresolved. While mechanisms by which ALS hMN contribute to NMJ dysfunction are well-described in literature, limited information exist on how the other tissue types in the tripartite synapse (hSKM and Schwann cells) induce and/or contribute to ALS NMJ disruption. A fair understanding of the role of each tissue type in NMJ dysfunction would help shape the trajectory of future ALS research and …

Covid-19: Exploring The Probability Of Disease Extinction - A Modeling And Simulation Study, Donald Porchia

Electronic Theses and Dissertations, 2020-

There are two distinct topics considered in this dissertation. The first is the formulation of a compartmental model using reactive social distancing in which disease transmission changes as a function of the state variables of the model; in this case, the cumulative incidence. The model assumes a single strain epidemic of Covid-19 in the United States and is used to estimate the cumulative number of deaths due to the epidemic where incidence data is used to calibrate and validate the model. The second topic concerns the use of the stochastic threshold to determine disease persistence or extinction. The Covid-19 pandemic …

Chitosan-Gallium Nanocomposite: Synthesis, Characterization And Antibacterial Activity, Samjhana Bhandari

Electronic Theses and Dissertations, 2020-

The emergence of multidrug-resistant (MDR) strains of bacteria and the lack of a novel class of antibiotics has become a global health concern. Pseudomonas aeruginosa is one common MDR bacteria responsible for nosocomial infections and related mortality worldwide. It has developed resistance against commonly available antibiotics and is in the WHO's priority list of bacteria for which new antibiotics are desperately needed. Currently there is a growing interest in developing metal and non-metal-based nanoparticles to target multidrug-resistant bacteria. The objective of this study is to evaluate the efficacy of a novel nanocomposite of two non-traditional antimicrobials: a metal (Ga-III) and …

Anti-Map Triple Therapy Supports Immunomodulatory Therapeutic Response In Crohn's Disease Through Downregulation Of Nf-Kb Activation In The Absence Of Map Detection, Erij Elkamel

Electronic Theses and Dissertations, 2020-

The triple antibiotic formulation, known as anti-MAP therapy, exhibits unique synergistic antimicrobial activity and should be effective for treatment of Crohn's disease (CD) associated with Mycobacterium avium subspecies paratuberculosis (MAP). The absence of MAP detection in some CD cases may be linked to poor diagnostics or lack of association with the disease. To understand the therapeutic response of some CD patients to anti-MAP therapy in absence of MAP detection, the immunomodulatory potency of anti-MAP therapy and its major ingredients, clarithromycin (CLA) and rifabutin (RIF), in THP-1, Caco-2, and Jurkat T-cells were investigated. Anti-MAP formulation at 2.0 µg/mL decreased MAP viability …

Use Of Mechanical Pronation Beds In Acute Respiratory Distress Syndrome In The Intensive Care Unit: An Integrative Review Of The Literature, Amanda St. John

Honors Undergraduate Theses

The increasing rate of Acute Respiratory Distress Syndrome (ARDS) reinforces the need for additional resources to assist clinical staff with an individual's care and recovery. Pronation therapy involves physically rotating an individual from the posterior position to the prone position. Pronation therapy has successfully been used for individuals diagnosed with ARDS in Intensive Care Units for decades. However, manual pronation maneuvers by staff members poses risks for those who are critically ill and risk of physical injury to caregivers. Mechanical pronation beds have revolutionized the art of pronation therapy, minimizing risks, and decreasing possibility of kinking or pulling out life …

Role Of Rela In Dormancy And Toxr Proteolysis In Vibrio Cholerae, Zachary J. Malaussena

Honors Undergraduate Theses

Vibrio cholerae, the etiological agent of the severe diarrheal disease cholera, is an enteric pathogen that can be found in aquatic ecosystems when not colonizing the human gastrointestinal tract. Under adverse environmental conditions, V. cholerae is capable of entering dormant states that increase its survival during these ecological fluctuations. In these states, V. cholerae slows its metabolic activity and exhibits drastically altered gene expression and morphology. Stressors that lead to entry into these states vary from nutrient limitation, suboptimal pH, or antimicrobials. Cells in these dormant states are highly resistant to antimicrobials and cannot be detected using standard microbiological techniques …

Developing A Targeted Ultrasound-Responsive Nanobubble-Based Gene Delivery System For Osteoporosis Treatment, Angela Shar

Honors Undergraduate Theses

The overall goal of this project was to develop, optimize, and test an ultrasound-responsive targeted nanobubble for delivering osteoporosis-related silencing genes such as Cathepsin K small interfering RNA (CTSK siRNA) for osteoporosis treatment. The nanobubbles were synthesized using an in situ sonochemical method. The nanobubble (NB) is composed of a gas core made from perfluorocarbon, stabilized with albumin, encapsulated with CTSK siRNA, and embedded with alendronate (AL) for bone targeting (CTSK siRNA-NB-AL). Following its development, the responsiveness of CTSK siRNA-NB-AL to a therapeutic ultrasound probe was examined. The results of biocompatibility tests with human bone marrow-derived mesenchymal stem cells proved …

Modeling And Analysis Of Covid-19 And Dynamical Systems In Biology And Physics, Vladimir Grbic

Honors Undergraduate Theses

In this paper, we study various examples of dynamical systems found in nature and extract the necessary concepts to build upon. Then, we develop and propose a new deterministic model for COVID-19 propagation. Our model should serve two purposes. First, we will approximate the infected and deceased individuals after a given time during the pandemic. Then, using a linearized subsystem describing infectious compartments about the disease- free equilibrium (DFE), we will determine the basic reproductive number (R0) by the next-generation matrix method.

The Fighting Journey Of A Premature Baby: A Systemic Review Of Developmental And Neurological Complications Of The Premature Baby, Dana Patel

Honors Undergraduate Theses

Prematurity is a worldwide problem. Every year, 15 million babies are born prematurely, and 1 million of those babies die because of related complications. The surviving premature babies are struggling to hold on to their lives, and even when they do live, most of them end up having various complications to survive and get stronger. There are physical complications faced on their journey such as having underdeveloped lungs, pneumonia, obesity, sepsis, retinopathy of prematurity, respiratory distress syndrome, bronchopulmonary dysplasia, asthma, wheezing, bronchiolitis, cerebral palsy, and motor impairment. They can also develop mental and behavioral health complications such as depression, seizures …

Sequence-Independent Assay For Hiv Viral Load Quantitation, Omar El Merhebi

Honors Undergraduate Theses

Although nucleic acid tests (NATs) for human immunodeficiency virus (HIV) exhibit many advantages, such as early detection and viral load quantification, over immunological assays, their widespread use is limited by their demand for high-level infrastructure, sophisticated equipment, and advanced staff competence. Furthermore, when quantifying viral loads of patients, it has been reported that these assays can underestimate viral quantities by 22- to 100-fold due to primer-template mismatches in more divergent HIV subtypes. Therefore, we have developed a cost-effective and sequence-independent assay for the detection and quantification of HIV utilizing a modified nucleic acid sequence-based amplification (NASBA) protocol coupled to an …

Sex Differences In Peripheral Fat Detection And Metabolism, Naima Dahir

Electronic Theses and Dissertations, 2020-

The current epidemic of obesity is driven, at least in part, by excessive caloric intake and fat intake has been implicated as a major contributing factor. The mammalian taste system displays marked plasticity, and it has been shown that the detection of fatty acids, the prototypical fat taste stimulus, leads to reduced sensitivity upon prolonged exposure to a high-fat diet. Increased obesity and metabolic disorders in postmenopausal females indicate that the female steroid hormone, estrogen, may contribute to metabolic homeostasis. Sex differences in the taste system were explored using a multidisciplinary approach to examine the ways in which estrogen influences …

Using A Lubricin Reporter Cell To Test Current Vs. Optimized Media Compositions, Sean M. Kennedy

Honors Undergraduate Theses

Osteoarthritis is a joint disease characterized by the breakdown of articular cartilage. The field of tissue engineering is interested in developing methods to produce biological alternatives to current orthopedic procedures. Lubricin is a molecule which is important in the proper lubrication of articular cartilage. It is a challenge in the field of tissue engineering to produce cartilage with sufficient lubricin expression. Developing a reporter cell for lubricin allowed for a more efficient investigation of the conditions wh­­­ich may influence its expression. By comparing "optimized" and traditional media solutions, it was determined that the use of a previously reported type II …

Acoustic Detection Of Developmental Dysplasia Of The Hip In Models Representing Neonates, Pinak Raodeo

Honors Undergraduate Theses

Developmental dysplasia of the hip (DDH) is a condition that involves the dislocation of the head of the femur in the acetabulum of the pelvic bone. Although it may not interfere with a child's range of motion during infancy, DDH can cause various effects over time such as joint pain, abnormal gait, and even paralysis. It is crucial to catch this phenomenon early on so that permanent disability is not introduced to the patient. In this study, an excitation device was used to send a broadband frequency signal through a hip joint simulated by a 3D printed bone apparatus consisting …

High Rates Of Misdiagnosis Of Pediatric Acute-Onset Neuropsychiatric Syndrome And How To Reduce Them, Aliya Centner

Honors Undergraduate Theses

Pediatric Acute-Onset Neuropsychiatric Syndrome (PANS) is a clinical diagnosis characterized by sudden onset of obsessive compulsive disorder and is considered a type of Autoimmune Encephalitis. Pediatric Autoimmune Neuropsychiatric Disorder associated with Streptococcal Infection (PANDAS) is a subset of PANS characterized by a similar presentation but specifically results from infection by Group A β-hemolytic streptococcus. Early and accurate diagnosis is essential, as PANS can become a chronic condition. PANS and PANDAS are frequently misdiagnosed. There are a variety of differential diagnoses. The intent of this thesis is to evaluate differences in symptoms between PANDAS patients and those with a differential diagnosis …

Disparities In The 2009 Swine Flu Pandemic And Covid-19: A Literature Review, Yusuf Amawi

Honors Undergraduate Theses

The purpose of this thesis was to identify causes of disparities in affliction (infection) and mortality for minority populations (Blacks, Hispanics, Asians, and American Indian/Alaskan Natives) during the Swine Flu (H1N1) and COVID-19 (Sars-Cov-2) Pandemics. A literature review was conducted gathering peer-reviewed journal articles related to racial and socioeconomic disparities in affliction and mortality during both pandemics. The model of Blumenshine et al. (2008) was used as a guide for the analysis of this thesis, and measures of exposure, susceptibility, and treatment were hypothesized as causes for the disparities experienced by the minority populations during the two pandemics. Ultimately, it …

Covid-19 Infection In Hypertensive Patients In Correlation With Race, Elizabeth Durkin

Honors Undergraduate Theses

Disparities in healthcare exist in the U.S., particularly between different racial categories. This study investigated the frequency of COVID-19 cases and hypertension cases among five different racial groups (White, Black, Asian, Native American, and Native Hawaiian). The study also examined the correlation between COVID-19 and hypertension. It was hypothesized that, because of genetic predisposition to certain diseases and existing socioeconomic barriers, Black populations would have the highest rates of both COVID-19 and hypertension. It was also proposed that a positive correlation exists between COVID-19 and hypertension frequency. To test this, the Kaiser Family Foundation's data for COVID-19 cases and race …

Early Host Defense Mechanisms Against La Crosse Virus Infection, Maria A. Cruz Zamora

Electronic Theses and Dissertations, 2020-

Given the importance of innate defense mechanisms in the skin, we have examined the interactions of the arbovirus La Crosse virus (LACV) with serum factors that serve as a first line of antiviral defense, and the outcome of LACV infection of human keratinocytes, one of the main cell types present at viral entry. Incubation of LACV derived from insect cells (I-LACV) with normal human serum in vitro did not result in neutralization, but instead stabilized LACV virions and enhanced infectivity. Enhanced infectivity was also seen with heat inactivated serum devoid of complement activity and with serum from a range of …

The Effects Of Roundup On The Life History, Stress Response, And Immune Function Of The Yellow Fever Mosquito, Aedes Aegypti, Lindsay E. Martin

Honors Undergraduate Theses

Aedes aegypti mosquitoes, vectors for many human diseases, begin life as larvae developing in water, potentially exposed to runoff with herbicides and pesticides. This study serves as a novel investigation into the transstadial effects of exposure to Roundup on A. aegypti life history, immunity, and stress response and aims to account for these effects in an R0 model for vectorborne disease transmission. Prior work has shown that Roundup negatively affects mosquito life history. I hypothesized that larval exposure to the maximum sublethal dose of Roundup (7189µg/L) would negatively impact A. aegypti life history, immunity (candidate gene approach), and stress response …