Medicine and Health Sciences Commons^™

Immunomodulatory Effects Of Plant Extracts From Salvia Deserta Schang. And Salvia Sclarea L., Aizhan Zhussupova, Gaziza Zhumaliyeva, Vyacheslav Ogay, Assel Issabekova

Faculty and Student Publications

Medicines, their safety, effectiveness and quality are indispensable factors of national security, important on a global scale. The COVID-19 pandemic has once again emphasized the importance of improving the immune response of the body in the face of severe viral infections. Plants from the Salvia L. genus have long been used in traditional medicine for treatment of inflammatory processes, parasitic diseases, bacterial and viral infections. The aim of the current study was to evaluate the immunomodulatory effects of plant extracts LS-1, LS-2 from Salvia deserta Schang. and LS-3, LS-4 from Salvia sclarea L. plants growing in southern Kazakhstan by conventional …

Phytochemical Investigation Of Egyptian Spinach Leaves, A Potential Source For Antileukemic Metabolites: In Vitro And In Silico Study, Shimaa M. Abdelgawad, Mona H. Hetta, Mohamed A. Ibrahim, Premalatha Balachandran

Faculty and Student Publications

Spinacia oleracea L., Amaranthaceae, leaves cultivated in Egypt demonstrated a potential antileukemic activity against the chronic myeloid leukemia, K562 cell line. Thus, the aim of this study is to carry out a phytochemical investigation of S. oleracea leaves as well as the isolation of its antileukemic phytoconstituents. Phytochemical investigation of S. oleracea leaves resulted in the isolation of seventeen known compounds. The biological study revealed that compounds hexaprenol, phytol, and 18-[(1-oxohexadecyl) oxy]-9-octadecenoic acid exhibited a remarkable antiproliferative activity against K562 cells in vitro. A mechanistic in silico study showed that hexaprenol, phytol, and 18-[(1-oxohexadecyl) oxy]-9-octadecenoic acid exhibited a strong binding …

Interactions Of Marine Sulfated Glycans With Antithrombin And Platelet Factor 4, Wenjing Zhang, Weihua Jin, Vitor H. Pomin, Fuming Zhang

Faculty and Student Publications

The molecular interactions of sulfated glycans, such as heparin, with antithrombin (AT) and platelet factor 4 (PF4) are essential for certain biological events such as anticoagulation and heparin induced thrombocytopenia (HIT). In this study, a library including 84 sulfated glycans (polymers and oligomers) extracted from marine algae along with several animal-originated polysaccharides were subjected to a structure-activity relationship (SAR) study regarding their specific molecular interactions with AT and PF4 using surface plasmon resonance. In this SAR study, multiple characteristics were considered including different algal species, different methods of extraction, molecular weight, monosaccharide composition, sulfate content and pattern and branching vs. …

Inhibition Of Sars-Cov-2 Wild-Type (Wuhan-Hu-1) And Delta (B.1.617.2) Strains By Marine Sulfated Glycans, Rohini Dwivedi, Poonam Sharma, Marwa Farrag, Seon Beom Kim

Faculty and Student Publications

The Coronavirus disease pandemic has steered the global therapeutic research efforts toward the discovery of potential anti-severe acute respiratory syndrome coronavirus (SARS-CoV-2) molecules. The role of the viral spike glycoprotein (S-protein) has been clearly established in SARS-CoV-2 infection through its capacity to bind to the host cell surface heparan sulfate proteoglycan (HSPG) and angiotensin-converting enzyme-2. The antiviral strategies targeting these 2 virus receptors are currently under intense investigation. However, the rapid evolution of the SARS-CoV-2 genome has resulted in numerous mutations in the S-protein posing a significant challenge for the design of S-protein-targeted inhibitors. As an example, the 2 key …

Preparation, Characterization And Pharmacokinetics Of Tolfenamic Acid-Loaded Solid Lipid Nanoparticles, Wei Xu, Zhaoyou Deng, Yifei Xiang, Dujuan Zhu

Faculty and Student Publications

The clinical use of nonsteroidal anti-inflammatory drugs is limited by their poor water solubility, unstable absorption, and low bioavailability. Solid lipid nanoparticles (SLNs) exhibit high biocompatibility and the ability to improve the bioavailability of drugs with low water solubility. Therefore, in this study, a tolfenamic acid solid lipid nanoparticle (TA-SLN) suspension was prepared by a hot melt–emulsification ultrasonication method to improve the sustained release and bioavailability of TA. The encapsulation efficiency (EE), loading capacity (LC), particle size, polydispersity index (PDI), and zeta potential of the TA-SLN suspension were 82.50 ± 0.63%, 25.13 ± 0.28%, 492 ± 6.51 nm, 0.309 ± …

Osteoporosis Knowledge And Health Beliefs Among Middle-Aged Men And Women In The Southern United States, Stacy Chelf, Robert E. Davis, Martha A. Bass, M. Allison Ford, Ali D. Firouzabadi, Jonathan T. Leo, Vinayak K. Nahar

Faculty and Student Publications

Context: The most common skeletal disease, osteoporosis, causes bone fragility due to decreased bone mass and bone microarchitecture destruction. The health belief model is often applied to asymptomatic, prevention-related diseases such as osteoporosis. Steps to mitigate the insidious nature of osteoporosis, including education, motivation, and monitoring of bone mineral density, must begin at an earlier age. Objectives: This study evaluates the knowledge and health beliefs surrounding osteoporosis in a population of males and females 35–50 years old to determine sex-based differences in osteoporosis knowledge and beliefs and to assess the correlation between perceptions and health motivation. Methods: Participants (81 males, …

Blood-Flow-Restriction-Training-Induced Hormonal Response Is Not Associated With Gains In Muscle Size And Strength, Gilberto C. Laurentino, Jeremy P. Loenneke, Carlos Ugrinowitsch, Marcelo S. Aoki, Antonio G. Soares, Hamilton Roschel, Valmor Tricoli

Faculty and Student Publications

The aim of this study was to determine whether increases in post-exercise endocrine response to low-load resistance exercise with blood flow restriction and high-load resistance exercise would have association with increases in muscle size and strength after an 8-week training period. Twenty-nine untrained men were randomly allocated into three groups: low-load resistance exercise with (LL-BFR) or without blood flow restriction (LL), and high-load resistance exercise (HL). Participants from LL-BFR and LL groups performed leg extension exercise at 20% of one repetition maximum (1RM), four sets of 15 repetitions and the HL group performed four sets of eight repetitions at 80% …

Vis/Nir Spectra And Color Parameters According To Leaf Age Of Some Eucalyptus Species: Influence On Their Classification And Discrimination, Izabel P. Migacz, Jane Manfron, Paulo V. Farago, Vijayasankar Raman

Faculty and Student Publications

Aim of study: The aim of this study was to verify the differences in VIS/NIR spectra and leaf color parameters of leaves of Eucalyptus badjensis, E. benthamii, E. dunnii, E. grandis, E. globulus and E. saligna, at four ages, and their influence on species discrimination. Area of study: São Mateus do Sul, Paraná, Brazil. Materials and methods: Seedlings of the six species, with four replicates for each, were acclimatized in the same environment, in Oc-tober 2015, in an entirely randomized design. Leaf samples were collected from plants that were 6, 8, 10 and 12 months old. Three leaves from each …

Analysis Of Select Dietary Supplement Products Marketed To Support Or Boost The Immune System, Cindy Crawford, Bharathi Avula, Andrea T. Lindsey, Abraham Walter

Faculty and Student Publications

Importance: Cold, flu, and immunity dietary supplement product sales have skyrocketed since the start of the COVID-19 pandemic. Supporting or boosting the immune system has become an important reason for using dietary supplements, and many consumers are purchasing products through online platforms. Objectives: To examine whether select dietary supplement products advertised as supporting or boosting the immune system are accurately labeled according to the Supplement Facts label of listed ingredients and to qualitatively describe the product labels' characteristics in terms of claims made. Design, Setting, and Participants: In this case series, 30 featured immune health dietary supplements were selected and …

Computational Tools To Expedite The Identification Of Potential Pxr Modulators In Complex Natural Product Mixtures: A Case Study With Five Closely Related Licorice Species, Manal Alhusban, Pankaj Pandey, Jongmin Ahn, Bharathi Avula

Faculty and Student Publications

The genus Glycyrrhiza, comprising approximately 36 spp., possesses complex structural diversity and is documented to possess a wide spectrum of biological activities. Understanding and finding the mechanisms of efficacy or safety for a plant-based therapy is very challenging, yet it is crucial and necessary to understand the polypharmacology of traditional medicines. Licorice extract was shown to modulate the xenobiotic receptors, which might manifest as a potential route for natural product-induced drug interactions. However, different mechanisms could be involved in this phenomenon. Since the induced herb-drug interaction of licorice supplements via Pregnane X receptor (PXR) is understudied, we ventured out to …

Indoloquinoline-Mediated Targeted Downregulation Of Kras Through Selective Stabilization Of The Mid-Promoter G-Quadruplex Structure, Alexandra Maria Psaras, Rhianna K. Carty, Jared T. Miller, L. Nathan Tumey

Faculty and Student Publications

KRAS is a well-validated anti-cancer therapeutic target, whose transcriptional downregulation has been demonstrated to be lethal to tumor cells with aberrant KRAS signaling. G-quadruplexes (G4s) are non-canonical nucleic acid structures that mediate central dogmatic events, such as DNA repair, telomere elongation, transcription and splicing events. G4s are attractive drug targets, as they are more globular than B-DNA, enabling more selective gene interactions. Moreover, their genomic prevalence is increased in oncogenic promoters, their formation is increased in human cancers, and they can be modulated with small molecules or targeted nucleic acids. The putative formation of multiple G4s has been described in …

Traditional Use, Phytochemical Profiles And Pharmacological Properties Of Artemisia Genus From Central Asia, Aliya Nurlybekova, Aidana Kudaibergen, Aizhan Kazymbetova, Magzhan Amangeldi

Faculty and Student Publications

The flora of Kazakhstan is characterized by its wide variety of different types of medicinal plants, many of which can be used on an industrial scale. The Traditional Kazakh Medicine (TKM) was developed during centuries based on the six elements of ancient Kazakh theory, associating different fields such as pharmacology, anatomy, pathology, immunology and food nursing as well as disease prevention. The endemic Artemisia L. species are potential sources of unique and new natural products and new chemical structures, displaying diverse bioactivities and leading to the development of safe and effective phytomedicines against prevailing diseases in Kazakhstan and the Central …

Polymer Coated Polymeric (Pcp) Microneedles For Sampling Of Drugs And Biomarkers From Tissues, Deeksha Jakka, A. V. Matadh, H. N. Shivakumar, Howard Maibach

Faculty and Student Publications

The Polymer Coated Polymeric (PCP) microneedles were fabricated using PVP K30 in the core and ethyl cellulose in the coating. The PCP microneedles do not disintegrate in the tissue upon insertion and rather stays intact and allows diffusion of drugs and analytes across the membrane both inward and outward. In this project the potential use of PCP microneedles for sampling analytes from the dermal tissue was explored. The amount of analyte sampled depended on the concentration in the tissue, physicochemical properties of the analyte and duration of insertion of the array in the tissue. Further, an advanced type of PCP …

Comparative Single Dose Pharmacokinetics And Metabolism Of Racemic Primaquine And Its Enantiomers In Human Volunteers, Washim Khan, Yan Hong Wang, Narayan D. Chaurasiya, Np Dhammika Nanayakkara

Faculty and Student Publications

Primaquine (PQ) is a racemic drug used in treatment of malaria for six decades. Recent studies suggest that the two enantiomers of PQ are differentially metabolized in animals, and this results in different pharmacological and toxicological profiles. The current study characterizes the pharmacokinetic (PK) properties, metabolism and tolerability of the individual enantiomers of PQ in healthy human volunteers with normal glucose-6-phosphate dehydrogenase (G6PD) activity. Two cohorts (at two dose levels), each with 18 subjects, participated in three study arms in a crossover fashion: a single dose of the (−)-R enantiomer (RPQ), a single dose of the (+)-S enantiomer (SPQ), and …

Chemical Authentication And Speciation Of Salvia Botanicals: An Investigation Utilizing Gc/Q-Tof And Chemometrics, Joseph Lee, Mei Wang, Jianping Zhao, Bharathi Avula

Faculty and Student Publications

Members of the genus Salvia are used as culinary herbs and are prized for their purported medicinal attributes. Since physiological effects can vary widely between species of Salvia, it is of great importance to accurately identify botanical material to ensure safety for consumers. In the present study, an in-depth chemical investigation is performed utilizing GC/Q-ToF combined with chemometrics. Twenty-four authentic plant samples representing five commonly used Salvia species, viz. S. apiana, S. divinorum, S. mellifera, S. miltiorrhiza, and S. officinalis, are analyzed using a GC/Q-ToF technique. High-resolution spectral data are employed to construct a sample class prediction (SCP) model followed …

Synergistic Antibacterial Activity With Conventional Antibiotics And Mechanism Of Action Of Shikonin Against Methicillin‐Resistant Staphylococcus Aureus, Qian Qian Li, Hee Sung Chae, Ok Hwa Kang, Dong Yeul Kwon

Faculty and Student Publications

Methicillin‐resistant Staphylococcus aureus (MRSA) is a troublesome pathogen that poses a global threat to public health. Shikonin (SKN) isolated from Lithospermum erythrorhizon (L. erythro-rhizon) possesses a variety of biological activities. This study aims to explore the effect of the combined application of SKN and traditional antibiotics on the vitality of MRSA and the inherent anti-bacterial mechanism of SKN. The synergies between SKN and antibiotics against MRSA and its clinical strain have been demonstrated by the checkerboard assay and the time‐kill assay. The effect of SKN on disrupting the integrity and permeability of bacterial cell membranes was verified by a nucleotide …

Chemical Fingerprinting Profile And Targeted Quantitative Analysis Of Phenolic Compounds From Rooibos Tea (Aspalathus Linearis) And Dietary Supplements Using Uhplc‐Pda‐Ms, Omer I. Fantoukh, Yan Hong Wang, Abidah Parveen, Mohammed F. Hawwal

Faculty and Student Publications

Aspalathus linearis (Burm.f.) R. Dahlgren, commonly known as rooibos tea, was consumed traditionally by the indigenous South African inhabitants as an herbal remedy. Beside antioxidant properties, it displays antiallergic, antispasmodic, and hypoglycemic activities. An ultra‐high-performance liquid chromatography method coupled with photodiode array and mass spectrometry detectors were developed for the determination of 14 phenolic constituents from leaves and stems of A. linearis. The efficient separation was performed within 30 min at a temperature of 30 °C by using C‐18 column as the stationary phase and water/acetonitrile with 0.05% formic acid as the mobile phase. Method validation for linearity, repeatability, limits …

Anxiety Symptoms Among Extension Professionals' During The Covid-19 Pandemic With The Gad-2, Glenn D. Israel, Colleen E. Gariton, Harsha E. James

Journal of Rural Social Sciences

According to the National Institute of Mental Health, anxiety disorders are a common mental health disorder but often remain undetected and undertreated. During the COVID-19 pandemic, Extension professionals have worked hard to address emerging issues that communities face, possibly impacting the amount of anxiety they experience. This study determined the prevalence of anxiety symptoms among Extension professionals in the United States. Participants from 24 states completed a survey containing the Generalized Anxiety Disorder 2-item (GAD-2) screener. Almost one-quarter of Extension professionals had a GAD-2 score greater than three, an indicator of anxiety with a possibility of generalized anxiety disorder, which …

Implications Of Covid-19 Mitigation Policies On Recreational Trail Users: Exploring Antecedents To Physical Distancing On Trails Across The Rural-Urban Continuum, Christopher J. Wynveen, Ingrid Schneider, Deonne Vanderwoude, Taylor Stein, Heather Gibson, Kim Shinew, William Hendricks, Megha Budruk

Journal of Rural Social Sciences

The COVID-19 pandemic and subsequent travel restrictions led to a worldwide increase in greenspace use. The U.S. Centers for Disease Control and Prevention encouraged policies including physical distancing and COVID-related signage. However, the extent to which these policies influenced behavior is unknown. To fill this gap, we report on a 2020 observational study at 14 trails across six U.S. states framed within a social-ecological model. Behavioral observations of 8,093 groups assessed compliance rates with infection-mitigation behaviors. Additionally, we noted the presence of COVID-related signs, the days between the observation and stay-at-home order start date, the setting (i.e., urban, suburban, and …

Rural-Urban And Within-Rural Differences In Covid-19 Mortality Rates, Yue Sun, Kent Jason G. Cheng, Shannon M. Monnat

Journal of Rural Social Sciences

Since late-2020, COVID-19 mortality rates have been higher in rural than in urban America, but there has also been substantial within-rural heterogeneity. Using CDC data, we compare COVID-19 mortality rates across the rural-urban continuum as well as within rural counties across different types of labor markets and by metropolitan adjacency. As of October 1, 2021, the cumulative COVID-19 mortality rate was 247.0 per 100,000 population in rural counties compared to 200.7 in urban counties. Higher COVID-19 mortality rates in rural counties are explained by lower average educational attainment and lower median household income. Within rural counties, mortality rates have been …

Design Of Topical Moxifloxacin Mucoadhesive Nanoemulsion For The Management Of Ocular Bacterial Infections, Ahmed Adel Ali Youssef, Ruchi Thakkar, Samir Senapati, Poorva H. Joshi

Faculty and Student Publications

Ocular bacterial infections can lead to serious visual disability without proper treatment. Moxifloxacin (MOX) has been approved by the US Food and Drug Administration as a monotherapy for ocular bacterial infections and is available commercially as an ophthalmic solution (0.5% w/v). However, precorneal retention, drainage, and low bioavailability remain the foremost challenges associated with current commercial eyedrops. With this study, we aimed to design a MOX-loaded nanoemulsion (NE; MOX-NE) with mucoadhesive agents (MOX-NEM) to sustain MOX release, as well as to overcome the potential drawbacks of the current commercial ophthalmic formulation. MOX-NE and MOX-NEM formulations were prepared by hot homogenization …

The International Cannabis Toolkit (Icanntoolkit): A Multidisciplinary Expert Consensus On Minimum Standards For Measuring Cannabis Use, Valentina Lorenzetti, Chandni Hindocha, Kat Petrilli, Paul Griffiths

Faculty and Student Publications

Background: The lack of an agreed international minimum approach to measuring cannabis use hinders the integration of multidisciplinary evidence on the psychosocial, neurocognitive, clinical and public health consequences of cannabis use. Methods: A group of 25 international expert cannabis researchers convened to discuss a multidisciplinary framework for minimum standards to measure cannabis use globally in diverse settings. Results: The expert-based consensus agreed upon a three-layered hierarchical framework. Each layer—universal measures, detailed self-report and biological measures—reflected different research priorities and minimum standards, costs and ease of implementation. Additional work is needed to develop valid and precise assessments. Conclusions: Consistent use of …

An Exploratory Look Into The Effects Of Mississippi's Population Decline On Rural Dental Care, Allen Bailey Saffold

Honors Theses

Literature reviews and interviews with dentists working in rural Mississippi counties examined the effects of population decline on rural dental care in Mississippi. With the state’s continual population decline, loss of industry follows a loss of people. Through a cascade of effects, this can further reduce underserved areas’ access to dental care. In order to address the issue of rural Mississippi continuing to be underserved, policies need to be implemented that will make rural practice at least enticing if not desirable.

Intensive, Interprofessional Therapy: A Case Approach, Emma C. Schrotenboer

Honors Theses

This research looks at the impacts of intensive, interprofessional therapy for children with disabilities. There is very little literature currently published on this topic, although what is available generally finds that more intense therapy is more beneficial. The child who was studied was a camper at Adam’s Camp therapy camp, a week-long program that involves six hours of therapy each day with therapists from five different fields. Her progress over the week, as well as her retention of skills several weeks later, were determined by pre- and post-camp surveys sent to the mother and the therapists’ notes from during the …

Resilience Training And Quality Of Life In Stuttering Therapy: A Systematic Review, Ashley Koehler

Honors Theses

Abstract

This study investigated correlations between resilience and quality of life relative to stuttering therapy. A systematic review and meta-analysis of articles published with focuses on stuttering, resilience training, and quality of life was conducted. Electronic databases, PubMed, and Google Scholar, were used to gain results of relevant published articles. Both search engines in this review produced relevant articles. Google Scholar produced more articles that met all 3 inclusion criteria, while PubMed produced more results that met at least 1 or 2 inclusion criteria. From both databases, numerous articles included the need for a multidimensional therapy emphasizing personal resilience. However, …

Patients’ Perspective Of Patient-Centered Approach Vs. Biomedical Approach, Lakynn Hillhouse

Honors Theses

Evidence-based practice in audiology may consist of a patient-centered approach or a biomedical approach when offering individuals the results of hearing evaluations. Boisvert et al. (2017) and the Institute for Defense Analysis confirmed that audiologists preferred to select one approach. The question was if an audiology patient is presented with two options of explaining the hearing health issues, which model/approach will be his or her preference?

Participants may have had unconscious biases related to race or gender that could have unknowingly impacted their perception of the videos. The results of this research will facilitate clinical understanding of individual preferences regarding …

Assessment Of Motivation In Human Anatomy And Physiology Students, Mary Whitehead

Honors Theses

Motivation is the key to success in difficult science courses such as Human Anatomy and Physiology. Students may possess intrinsic motivation, or motivation for enjoyment, extrinsic motivation, or motivation for a reward, or amotivation, a lack of motivation at all. The goal of this experiment was to identify better ways of helping students succeed in Human Anatomy and Physiology (HAP) at the University of Mississippi, determine when motivational efforts seem to decrease during the semester, and identify how to better develop intrinsic motivation in students. There was a significant relationship between many of the student’s survey responses to their exam …

A Study Of Dextran As A Macromolecular Crowding Agent, Katherine Morgan

Honors Theses

Deoxyribonucleic acid (DNA) is the hereditary material in all living organisms. According to the Watson and Crick model, DNA exists as two long strands coiled into a double helix. However, DNA has been found to have the potential to exist in secondary forms known as G-Quadruplexes and i-motifs. I-motifs (intercalated-motif or iM) are formed under acidic conditions when sets of cytosines pair with protonated cytosines and are looped around each other. The pKa value for iMs in dilute solutions is approximately 6.5, but iMs can potentially exist at a higher, physiological pH value under crowded conditions. Within the interior of …

The Use Of Embark In Teaching About Genetic Relatedness, Anna Bonvillain, Tori Trammel

Honors Theses

Because of the increasing importance of precision medicine, it is vital that future healthcare providers master concepts related to genetic variation taught during their undergraduate classes. However, studies have shown that physicians often lack an adequate understanding of genetics, which serves as a hindrance to effectively caring for their patients. To address this issue, we created a collaborative active-learning protocol to improve pre-health students' comprehension of key concepts such as genetic relatedness and the source of genetic variation between siblings. Our worksheet guides students to compare the genetic profiles of two canine siblings using the Embark DNA genotyping platform. Embark …

Comorbidity Burden And Covid-19 Vaccination Intention: Application Of The Health Belief Model, Michael Raymond

Honors Theses

The COVID-19 pandemic impacted many aspects of American’s lives causing over 79 million cases and over 950,000 deaths. Existing research shows severity of COVID-19 infection may be linked to number of underlying health conditions, known as comorbidities. The objective of this study was to determine if comorbidity burden was associated with intention to vaccinate against COVID-19. This relationship was looked at through the Health Belief Model (HBM) and its mediating variables of perceived susceptibility, perceived severity, perceived benefits, and perceived barriers. Our sample was compromised of 350 individuals recruited from an online platform who were not already vaccinated against COVID-19. …