Medicine and Health Sciences Commons^™

Zika Virus Infection Causes Widespread Damage To The Inner Ear, Kathleen T. Yee, Biswas Neupane, Fengwei Bai, Douglas E. Vetter

Faculty Publications

Zika virus (ZIKV) has been recently recognized as a causative agent of newborn microcephaly, as well as other neurological consequences. A less well recognized comorbidity of prenatal ZIKV infection is hearing loss, but cases of hearing impairment following adult ZIKV infection have also been recognized. Diminished hearing following prenatal ZIKV infection in a mouse model has been reported, but no cellular consequences were observed. We examined the effects of ZIKV infection on inner ear cellular integrity and expression levels of various proteins important for cochlear function in type I interferon receptor null (Ifnar1^−/−) mice following infection at …

Redox-Sensitive Nanocomplex For Targeted Delivery Of Melittin, Bei Cheng, Peisheng Xu

Faculty Publications

Although peptide therapeutics have been explored for decades, the successful delivery of potent peptides in vitro and in vivo remains challenging due to the poor stability, low cell permeability, and off-target effects. We developed a redox sensitive polymer-based nanocomplex which can efficiently and stably deliver the peptide drug melittin for cancer therapy. The nanocomplex selectively targets cancer cells through lactobionic acid mediated endocytosis and releases melittin intracellularly upon the trigger of elevated redox potential. In vivo study proved that the targeted nanocomplex shows excellent potency in inhibiting tumor growth in a xenograft colon cancer mouse model. Thus, the polymer/melittin nanocomplexes …

Intermittent Pneumatic Compression For Venous Thromboembolism Prevention: A Systematic Review On Factors Affecting Adherence, Richard Greenall, Rachel E. Davis

Faculty Publications

OBJECTIVE: Venous thromboembolism (VTE) is a potentially fatal complication of hospitalisation. Intermittent pneumatic compression (IPC) is one approach to reducing the likelihood of a VTE. Adherence to IPC is known to be inadequate though the reasons for this remain unclear. This systematic review explores factors that affect adherence to IPC in the inpatient context. METHODS: Information sources-EMBASE, MEDLINE and PsycINFO were searched for literature between January 1960 and May 2019. Eligibility criteria-studies were included if they focused on inpatient care and examined factors affecting adherence to IPC devices. RESULTS: Included studies-a total of 20 out of 1476 studies were included. …

The Chaplains’ Role: Insights And Awareness Through The Lens Of Occupational Therapy, Tamera Keiter Humbert

Faculty Publications

The impetus for this study began with the consideration of what various practitioners have to offer in the delivery of services that attend to the spiritual nature of patients within an interdisciplinary healthcare team. To better understand that perspective, the authors of this study decided to initially investigate the literature specifically related to the role of chaplains to better situate the constructs of spirituality and healthcare. From the reviewed literature, we ascertained the general role and tasks of the chaplain, and the value of interdisciplinary work, albeit primarily with nurses and physicians. Despite these insights, we (all from an occupational …

Racial Disparities In Air Pollution Burden And Covid-19 Deaths In Louisiana, Usa, In The Context Of Long-Term Changes In Fine Particulate Pollution, Kimberly A. Terrell, Wesley James

Faculty Publications

Black Americans in Louisiana are disproportionately dying from COVID-19, and environmental disparities may be contributing to this injustice. While Black communities in Louisiana's industrialized regions (e.g., Cancer Alley, Calcasieu Parish) have been overburdened with pollution for decades, this disparity has not been evaluated by using recent data. Here, we explore statewide relationships among air pollution burden, race, COVID-19 death rates, and other health/socioeconomic factors. Measures of pollution burden included satellite-derived particulate matter (PM2.5) concentrations and health risks from toxic air pollution (i.e., respiratory hazard [RH] and immunological hazard [IH], estimated by the Environmental Protection Agency). In addition, we evaluate changes …

Nanoparticles As Antibiotic-Delivery Vehicles (Advs) Overcome Resistance By Mrsa And Other Mdr Bacterial Pathogens: The Grenade Hypothesis, Amjed Alabresm, Yung Pin Chen, Savannah Wichter-Chandler, Jamie Lead, Brian C. Benicewicz

Faculty Publications

Objectives

The aim of this study was to examine how the concentrated delivery of less effective antibiotics, such as the Β-lactam penicillin G, by linkage to nanoparticles (NPs), could influence the killing efficiency against various pathogenic bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and other multidrug resistant (MDR) strains.

Methods

The Β-lactam antibiotic penicillin G (PenG) was passively sorbed to fluorescent polystyrene NPs (20 nm) that were surface-functionalized with carboxylic acid (COO⁻-NPs) or sulfate groups (SO₄⁻-NPs) to form a PenG-NP complex. Antimicrobial activities of PenG-NPs were evaluated against Gram-negative and Gram-positive bacteria, including antibiotic resistant strains. …

Empirical Fluoroquinolones Versus Broad-Spectrum Beta-Lactams For Gram-Negative Bloodstream Infections In The Absence Of Antimicrobial Resistance Risk Factors, Majdi N. Al-Hasan, Alyssa P. Gould, Chelsea Drennan, Olivia Hill, Julie Ann Justo, Joseph Kohn, P Brandon Bookstaver

Faculty Publications

OBJECTIVES: Increasing antimicrobial resistance rates limit empirical antimicrobial treatment options for Gram-negative bloodstream infections (GN-BSI). However, antimicrobial resistance may be predicted based on patient-specific risk factors using precision medicine concepts. This retrospective, 1:2 matched cohort examined clinical outcomes in hospitalized adults without major risk factors for antimicrobial resistance receiving empirical fluoroquinolones or broad-spectrum beta-lactams (BSBL) for GN-BSI at Prisma Health-Midlands hospitals in Columbia, SC, USA from January 2010 through June 2015. METHODS: Multivariable logistic regression was used to examine early treatment failure at 72-96 h from GN-BSI. Cox proportional hazards regression was used to examine 28-day mortality and hospital length …

Improving Adherence To Adjuvant Hormonal Therapy Among Disadvantaged Women Diagnosed With Breast Cancer In South Carolina: Proposal For A Multimethod Study, Tisha M. Felder, Sue Heiney, James R. Hébert, Daniela B. Friedman, Ronit Elk, Regina Franco, Lucy Gansauer, Barbara Christensen, Marvella E. Ford

Faculty Publications

Background: Current clinical guidelines recommend that hormone receptor-positive breast cancer survivors take adjuvant hormonal therapy (AHT) for 5 to 10 years, following the end of definitive treatment. However, fewer than half of patients adhere to the guidelines, and suboptimal adherence to AHT is associated with an increased risk of breast cancer mortality. Research has extensively documented sociodemographic and disease-specific factors associated with adherence to AHT, but very little evidence exists on behavioral factors (eg, knowledge, patient-provider communication) that can be modified and targeted by interventions. Objective: The goal of this study is to develop and test a theory-based, multilevel intervention …

Building Implementation Science In Nutrition, Andrea M. Warren, Edward A. Frongillo Jr., Rahul Rawat

Faculty Publications

The field of nutrition has been investing in the development of many nutrition-specific and -sensitive policies and programs aimed at improving population-level malnutrition in all its forms. When there is a need to learn about a new system, programmatic context, or target population to understand how to effectively deploy an intervention to help improve nutrition, it is important to be able to ask a broad range of questions, both in topic and in scope. Our aim is to provide a simple and conceptually clear definition and principles to elaborate the science of implementation for nutrition to distinguish it from other …

Immune And Microrna Responses To Infection And Indole-3-Carbinol During Colitis, Rasha Raheem Alkarkoushi, Yvonne Hui, Abbas Tavakoli Drph, Udai Singh, Prakash Nagarkatti, Mitzi Nagarkatti, Ioulia Chatzistamou, Marpe Bam, Traci L. Testerman

Faculty Publications

BACKGROUND:

Indole-3-carbinol (I3C) and other aryl hydrocarbon receptor agonists are known to modulate the immune system and ameliorate various inflammatory and autoimmune diseases in animal models, including colitis induced by dextran sulfate sodium (DSS). MicroRNAs (miRNAs) are also gaining traction as potential therapeutic agents or diagnostic elements. Enterohepatic (EHH) species are associated with an increased risk of inflammatory bowel disease, but little is known about how these species affect the immune system or response to treatment. AIM: To determine whether infection with an EHH species alters the response to I3C and how the immune and miRNA responses of an EHH …

Immune And Microrna Responses To Infection And Indole-3-Carbinol During Colitis, Rasha Raheem Alkarkoushi, Yvonne Hui, Abbas S. Tavakoli, Udai Singh, Prakash Nagarkatti, Mitzi Nagarkatti, Ioulia Chatzistamou, Marpe Bam, Traci L. Testerman

Faculty Publications

BACKGROUND: Indole-3-carbinol (I3C) and other aryl hydrocarbon receptor agonists are known to modulate the immune system and ameliorate various inflammatory and autoimmune diseases in animal models, including colitis induced by dextran sulfate sodium (DSS). MicroRNAs (miRNAs) are also gaining traction as potential therapeutic agents or diagnostic elements. Enterohepatic (EHH) species are associated with an increased risk of inflammatory bowel disease, but little is known about how these species affect the immune system or response to treatment. AIM: To determine whether infection with an EHH species alters the response to I3C and how the immune and miRNA responses of an EHH …

A Method To Measure The Partitioning Coefficient Of Volatile Organic Compounds In Nanoparticles, Guiying Rao, Jeonghyeon Ahn, Abigail Evans, Michelle Casey, Eric P. Vejerano

Faculty Publications

The partitioning behavior of volatile organic compounds (VOCs) into nanoparticles is less studied compared to those of semivolatile organic compounds (SVOCs) because of the lower concentration of the VOCs that is expected to partition into particles. One challenge in measuring the accurate partition coefficient of VOCs is quantifying their low mass fraction that sorbed on nanoparticles and differentiating them from the high VOC concentrations present in the gas-phase. Systematically characterizing the partitioning coefficient at a specific environmental condition is also difficult when sampling in the field. During field sampling, thermal and non-thermal issues such as sampling artifacts and non-equilibrium conditions …

Men’S Vasectomy Knowledge, Attitudes, And Information-Seeking Behaviors In The Southern United States: Results From An Exploratory Survey, Ashley L. White, Rachel E. Davis, Deborah Lynn Billings Phd, Emily S. Mann

Faculty Publications

Vasectomy is one of the few options men have to manage their reproductive capacity and take on a more equitable role in pregnancy prevention. While the method is underused throughout the United States, the southern states have a lower prevalence rate compared to the rest of the country. Existing survey research does not assess what men know or think about the procedure as a means of understanding why this is the case. We created and conducted an exploratory survey to assess men’s knowledge, attitudes, and information-seeking behaviors about vasectomy in the Southern United States. We used targeted Facebook advertising to …

Approaching Community Priorities In Youth Sports Injury Prevention Research, Zachary Y. Kerr, Paula Gildner, Aliza K. Nedimyer, Avinash Chandran, Melissa C. Kay, K. Hunter Byrd, Johna K. Register-Mihalik

Faculty Publications

© 2020 The Author(s).

Background: Research in youth sports is often complex. As interest in youth sports injury prevention grows, scientists should consider community priorities beyond a specific research study.

Main Text: This commentary discusses the authors’ personal experiences researching concussion prevention in middle school sports, as the overarching community faced multiple challenges. These challenges included a series of weather-related emergencies that resulted in a shift in the community’s priorities, multi-day school closures, and cancellations of sports activities and meetings. We discuss the importance of considering community priorities and providing support as scientists, colleagues, and members of the …

A Letter To Reconsider The Conditions For Testing Decontaminated N95 Respirators For Emergency Reuse To Address Shortage, Eric P. Vejerano, Jeonghyeon Ahn

Faculty Publications

The battle with COVID-19 pandemic has resulted in the shortage of personal protective equipment, particularly, N95 respirators. Healthcare workers who reused N95 respirators may resort to unproven methods of cleaning/sterilization that can severely compromise the respirators’ filtration efficiency. A recently issued guideline will test decontaminated N95 respirators against particles with a median diameter of 0.075 ± 0.020 µm at a flow rate of 85 L min–1. For emergency reuse, these conditions may be too stringent. N95 respirators tested at this flow rate had predicted efficiencies of < 69%, assuming complete degradation of their electrostatic coating. Experimental efficiencies were ~15% lower. For emergency reuse, we recommend to either adjust the flow rate closer to normal breathing, or the size of the test particle should reflect that of virus-laden respiratory aerosols (~> 0.5 µm). By reconsidering the test conditions, a substantial fraction of used/decontaminated respirators can …

Post-Traumatic Stress And Marijuana Outcomes: The Mediating Role Of Marijuana Protective Behavioral Strategies, Hallie R. Jordan, Michael B. Madson, Adrian J. Bravo, Matthew R. Pearson

Faculty Publications

Background: The present study investigated the mediating role of protective behavioral strategies for marijuana (PBSM) on the relationship between posttraumatic stress disorder (PTSD) and marijuana outcomes (i.e. marijuana use frequency, marijuana use quantity, cannabis use disorder (CUD) symptoms, and marijuana-related problems).

Methods: Participants were 1,107 traditional age college students (M_age = 20.26, SD = 3.32; 66.5% White, non-Hispanic; 68.8% female), who reported consuming marijuana at least once in the last 30 days and completed measures of PTSD symptoms, PBSM, and marijuana-related outcomes.

Results: PBSM significantly mediated the positive relationships between PTSD symptoms and both CUD symptoms and marijuana-related …

Family Behaviors As Unchanging Obstacles In End-Of-Life Care: 16-Year Comparative Data, Renea L. Beckstrand, Jasmine B. Jenkins, Karlen E. Luthy, Janelle L. B. Macintosh

Faculty Publications

Background Critical care nurses routinely care for dying patients. Research on obstacles in providing end-of-life care has been conducted for more than 20 years, but change in such obstacles over time has not been examined.

Objective To determine whether the magnitude scores of obstacles and helpful behaviors regarding end-of-life care have changed over time.

Methods In this cross-sectional survey study, questionnaires were sent to 2000 randomly selected members of the American Association of Critical-Care Nurses. Obstacle and helpful behavior items were analyzed using mean magnitude scores. Current data were compared with data gathered in 1999.

Results Of the 2000 questionnaires …

Covid-19 Diagnostic Process In Mainland China: The Math Beyond Pneumonia, Feng Wu, Weishan Huang

Faculty Publications

No abstract provided.

Can Children Catch Up From The Consequences Of Undernourishment? Evidence From Child Linear Growth, Developmental Epigenetics, And Brain And Neurocognitive Development, Jef L. Leroy, Edward A. Frongillo Jr., Pragya Dewan, Maureen M. Black, Robert A. Waterland

Faculty Publications

Recovery from nutritionally induced height deficits continues to garner attention. The current literature on catch-up growth, however, has 2 important limitations: wide-ranging definitions of catch-up growth are used, and it remains unclear whether children can recover from the broader consequences of undernutrition. We addressed these shortcomings by reviewing the literature on the criteria for catch-up in linear growth and on the potential to recover from undernutrition early in life in 3 domains: linear growth, developmental epigenetics, and child brain and neurocognitive development. Four criteria must be met to demonstrate catch-up growth in height: after a period in which a growth-inhibiting …

Nutrient Timing: A Garage Door Of Opportunity?, Shawn M. Arent, Harry P. Cintineo, Bridget A. Mcfadden, Alexa Jenny Chandler, Michelle Angelique Arent

Faculty Publications

Nutrient timing involves manipulation of nutrient consumption at specific times in and around exercise bouts in an effort to improve performance, recovery, and adaptation. Its historical perspective centered on ingestion during exercise and grew to include pre- and post-training periods. As research continued, translational focus remained primarily on the impact and outcomes related to nutrient consumption during one specific time period to the exclusion of all others. Additionally, there seemed to be increasing emphasis on outcomes related to hypertrophy and strength at the expense of other potentially more impactful performance measures. As consumption of nutrients does not occur at only …

The Mbeya Antimicrobial Stewardship Team: Implementing Antimicrobial Stewardship At A Zonal-Level Hospital In Southern Tanzania, Jeffrey W. Hall, Jeannette Bouchard, P Brandon Bookstaver, Matthew S. Haldeman, Peter Kishimbo, Godlove Mbwanji, Issakwisa Mwakyula, Davance Mwasomola, Megan Seddon, Mark Shaffer, Stephanie C. Shealy, Anthony Nsojo

Faculty Publications

In 2017, Mbeya Zonal Referral Hospital (MZRH) and the University of South Carolina (UofSC) agreed to collaboratively strengthen antimicrobial prescribing in the southern highlands of Tanzania and train a new generation of clinicians in responsible antimicrobial use. Key stakeholders and participants were identified and the Mbeya Antimicrobial Stewardship Team (MAST) was created. The team identified assets brought by the collaborators, and four investigations of baseline needs were developed. These investigations included (a) a baseline clinician survey regarding antimicrobial resistance and stewardship, (b) a serial chart review of inpatient antimicrobial prescribing practices, (c) an investigation of antimicrobial resistance rates using existing …

Nurses' Experiences Of Organisational Learning: A Qualitative Descriptive Study, Bret Lyman, Marisa E. Biddulph, V Grace Hopper, Julie L. Brogan

Faculty Publications

Aim: To explore the validity of and expand upon a model of organisational learning in hospitals.

Background: Organisational learning is a positive change in an organisation's collective knowledge, cognition and/or action, leading to improved hospital performance. A current model offers an evidence-based, theoretical representation of organisational learning in hospitals, yet the intricacies of organisational learning in clinical practice are not fully understood. Additional guidance is needed to effectively foster and study organisational learning.

Method: Semi-structured interviews were used to gather 15 first-hand experiences of organisational learning from 14 nurses. Data were analysed via deductive thematic analysis.

Results: Organisational learning was …

Linking Activity, Nutrition, And Child Health (Launch): Protocol For A Longitudinal Cohort Study Of Children As They Develop From Infancy To Preschool Age, Russell R. Pate, Edward A. Frongillo Jr., Kerry Cordan, Marsha Dowda, Alexander C. Mclain, Myriam E. Torres, William H. Brown, Agnes Bucko, Emily R. Shull

Faculty Publications

Background

Physical activity is known to provide important health benefits in children ages 3 years and above, but little is known about the effects of physical activity on health in very young children under age 3. LAUNCH (Linking Activity, Nutrition, and Child Health) is a study designed to expand the body of knowledge on development of physical activity behavior and associations between physical activity and other health characteristics as children transition from infancy to preschool age.

Methods

Physical activity and sedentary behavior will be measured objectively in young children over a period of 30 months. Each child will complete a …

Sex And Gender In Research On Healthcare Workers In Conflict Settings: A Scoping Review, Dana A. Halwani, Diana Mikati, Layal Hneiny

Faculty Publications

The occupational health literature has established that sex and gender are associated with all dimensions of the workplace. Sex and/or gender (sex/gender) factors play an important role in shaping the experiences, exposures, and health outcomes of male and female healthcare providers working in war and conflict settings. This study aims to (1) assess how sex/gender is considered in the occupational health literature on healthcare workers in conflict settings, and (2) identify the gaps in incorporating sex/gender concepts in this literature. A scoping review was carried out and nine electronic databases were searched using a comprehensive search strategy. Two reviewers screened …

Recent Advances In Stimuli-Responsive Drug Release And Targeting Concepts Using Mesoporous Silica Nanoparticles, Ghada G. Abdo, Moustafa M. Zagho, Ashraf Khalil

Faculty Publications

Being a developed and promising approach, nanotechnology has attracted a lot of attention in biomedical and pharmaceutical therapy applications. Among nanostructured materials, mesoporous silica nanoparticles (MSNs) are effectively used as nanocarriers for drug delivery systems. MSNs can be tailored-designed by different synthetic techniques. Their morphological characteristics dictate the type of application of such materials. Recently, polymer-based materials have been employed to functionalize the MSNs surface. These modified nanocarriers are loaded with the drug and can unload their “cargo” upon exposure to either endogenous or exogenous types of stimuli. In this study, different targeting concepts, including passive, active, vascular, nuclear, and …

Differential Relationships Between Waist Circumference And Cardiorespiratory Fitness Among People With And Without Type 2 Diabetes, Andrew Ortaglia, Samantha M. Mcdonald, Christina Supino, Michael D. Wirth, Xuem Sui, Matteo Bottai

Faculty Publications

Adults with type 2 diabetes mellitus tend to exhibit an increased level of central adiposity, augmenting their risk of further non-communicable diseases (NCDs). Importantly, consistent evidence demonstrates a significant, negative association between cardiorespiratory fitness (CRF) and waist circumference (WC). However, no previous studies have investigated differences in these CRF-related reductions in WC between adults with and without diabetes.

This study used data from the Aerobic Center for Longitudinal Studies, conducted between 1970 and 2006 among predominately Non-Hispanic White, middle-to-upper class adults in Texas. Quantile regression models were used to estimate CRF-related differences in WC between persons with and without diabetes. …

The Association Between Phosphodiesterase-5 Inhibitors And Colorectal Cancer In A National Cohort Of Patients, S. Scott Sutton, Joseph Magagnoli, Tammy H. Cummings, James W. Hardin

Faculty Publications

INTRODUCTION: To examine the association between phosphodiesterase-5 (PDE-5) inhibitor use and incidence of colorectal cancer among patients with erectile dysfunction treated in the Veterans Affairs (VA) Healthcare System. METHODS: A retrospective cohort study using the Veterans Affairs Informatics and Computing Infrastructure was conducted, with data spanning January 2001-December 2016. Patients were followed up from index until (i) the first diagnosis of colorectal cancer, (ii) death, or (iii) the end of study period. Statistical analyses evaluated demographics and baseline characteristics between cohorts (PDE-5 exposed or not) and the effect of additional dosages of each specific PDE-5 inhibitor using adjusted multivariate Cox …

Prediction Of Trimethoprim/Sulfamethoxazole Resistance In Community-Onset Urinary Tract Infections, Madeline Demarsh, P Brandon Bookstaver, Caroline Gordon, Juanne Lim, Nicole Griffith, Nicole K. Bookstaver, Julie Ann Justo, Joseph Kohn, Majdi N. Al-Hasan

Faculty Publications

OBJECTIVES: This study aimed to predict trimethoprim/sulfamethoxazole (SXT) resistance in patients with community-onset urinary tract infection (UTI) due to Enterobacteriaceae based on patient-specific risk factors. METHODS: This was a retrospective case-control study in Prisma Health facilities in central South Carolina, USA, including three community hospitals, affiliated emergency departments and ambulatory clinics, including adult patients with community-onset UTI due to Enterobacteriaceae (1 April 2015 to 29 February 2016). Multivariate logistic regression was used to examine risk factors for SXT resistance. RESULTS: Among 351 unique patients with community-onset UTI, 71 (20.2%) had SXT-resistant Enterobacteriaceae urinary isolates. Overall, median age was 64 years …

Rethinking Covid-19 Vulnerability: A Call For Lgbtq+ Im/Migrant Health Equity In The U.S. During And After A Pandemic, Nolan Kline

Faculty Publications

Public health responses to the COVID-19 pandemic have emphasized older adults’ vulnerability, but this obfuscates the social and political root causes of health inequity. To advance health equity during a novel communicable disease outbreak, public health practitioners must continue to be attentive to social and political circumstances that inform poor health. Such efforts are especially needed for populations who are exposed to numerous social and political factors that structure health inequity, such as lesbian, gay, bisexual, transgender, or otherwise-queer identifying (LGBTQ+) populations and im/migrant populations. The COVID-19 outbreak is therefore a critical time to emphasize root causes of health inequity.

Effect Of Differences In Month And Location Of Measurement In Estimating Prevalence And Trend Of Wasting And Stunting In India In 2005-2006 And 2015-2016, Emily M. Madan, Edward A. Frongillo Jr., Sayeed Unisa, Laxmikant Dwivedi, Robert Johnston, Abner Daniel, Praween K. Agrawal, Sila Deb, Ajay Khera, Purnima Menon, Phuong H. Nguyen

Faculty Publications

Background: Child undernutrition in India remains widespread. Data from the National Family Health Survey 3 and 4 (NFHS-3 and NFHS-4) suggest that wasting prevalence has increased while stunting prevalence has declined. Objective: The objectives of this study were to do the following: ) describe wasting and stunting by month of measurement in India in children surveys, and ) test whether differences in the timing of anthropometric data collection and in states between survey years introduced bias in the comparison of estimates of wasting and stunting between NFHS-3 and NFHS-4. Methods: Data on wasting and stunting for 42,608 and 232,744 children …