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Interleukin-6 (Il-6) Mediated Pathways In Nonalcoholic Fatty Liver Disease (Nafld) And Its Implications On Magnesium And Zinc Mineral Deficiencies: A Scoping Review, Marianne Koleng, Leann Nguyen Sep 2025

Interleukin-6 (Il-6) Mediated Pathways In Nonalcoholic Fatty Liver Disease (Nafld) And Its Implications On Magnesium And Zinc Mineral Deficiencies: A Scoping Review, Marianne Koleng, Leann Nguyen

Department of Nutrition Student Projects

The prevalence and incidence of Non-Alcoholic Fatty Liver Disease (NAFLD) is rising. In the United States alone, the prevalence of NAFLD is currently 38% and there has been a 50% increase over the last three decades. The present study investigated the role of ultratrace mineral deficiencies, specifically magnesium (Mg) and zinc (Zn), and if so, what nutritional interventions could be made to ameliorate or protect against the development of NAFLD. The role of trace and ultratrace minerals in pro-inflammatory cytokine pathways contributing to NAFLD, specifically Interleukin-6 (IL-6), were investigated. IL-6 is produced by hepatocytes and plays a crucial role in …


Symbiotic Aspergillus Terreus Alleviates Drought And Waterlogged Stress In Zea Mays L., Hazrat Ali, Fayaz Asad, Naveen Dilawar, Vasila Sharipova, Imtiaz Ahmad, Abida Zeb Sep 2025

Symbiotic Aspergillus Terreus Alleviates Drought And Waterlogged Stress In Zea Mays L., Hazrat Ali, Fayaz Asad, Naveen Dilawar, Vasila Sharipova, Imtiaz Ahmad, Abida Zeb

Turkish Journal of Botany

The interaction concerning rhizospheric fungi and plants is essential for enhancing plant resilience in the face of abiotic stress conditions. This study investigated the effects of the rhizospheric fungus Aspergillus terreus on maize (Zea mays L.) growth under both drought and waterlogging conditions. Our findings confirmed that inoculation with A. terreus mitigated the adverse effects of drought and waterlogging conditions on maize growth. Plants treated with Aspergillus terreus (A. terreus) exhibited enhanced root and shoot length, fresh and dry weight as well as enhanced chlorophyll content in plants compared to control, under stress-related conditions. Compared to the control group, A. …


Cells Stably Expressing Shrna Against Myo10 Display Altered Cell Motility, Joanna A. Mas, Chase E. Cristella, Vu Hao M. N. Phan, Lillian S. Wendt, Charlotte A. Rose, Abigail Ali, David F. Carpio, Christine Cole, Paige Embley, Jack E. Hoskins-Harris, Delia Johnson, Noelle Ledoux, Hannah W. Lwin, Sarah Salah, Erin Weisbart, Stacey J. Criswell, Omar A. Quintero-Carmona Sep 2025

Cells Stably Expressing Shrna Against Myo10 Display Altered Cell Motility, Joanna A. Mas, Chase E. Cristella, Vu Hao M. N. Phan, Lillian S. Wendt, Charlotte A. Rose, Abigail Ali, David F. Carpio, Christine Cole, Paige Embley, Jack E. Hoskins-Harris, Delia Johnson, Noelle Ledoux, Hannah W. Lwin, Sarah Salah, Erin Weisbart, Stacey J. Criswell, Omar A. Quintero-Carmona

Biology Faculty Publications

Myosin-X (MYO10) is an actin-based motor protein involved in cytoskeletal dynamics, membrane interactions, and integrin-mediated adhesion. To investigate MYO10's cellular roles, we generated MYO10 knockdown (MYO10KD) HeLa and COS7 cell lines using lentiviral shRNA. Compared to wild-type cells, both MYO10KD lines showed reduced proliferation and impaired cell migration in wound assays. Additionally, there were fewer edge filopodia in HeLa cells. Furthermore, MYO10KD cells demonstrated increased spreading on laminin-coated substrates, suggesting altered integrin activation and cytoskeletal linkage. Our results reinforce MYO10’s importance in cell proliferation, adhesion, and migration. These MYO10KD lines provide an accessible cell culture model for future study of …


Ground-Based Modeling Of Deep-Space Risks To The Spleen And Intestine In Mice, Edith Nathalie Pineda Sotomayor Sep 2025

Ground-Based Modeling Of Deep-Space Risks To The Spleen And Intestine In Mice, Edith Nathalie Pineda Sotomayor

Theses and Dissertations

Deep-space missions, such as those planned for the cis-lunar space and Mars, pose unique challenges to astronaut health due to prolonged microgravity (MG) exposure and low-dose chronic irradiation (CIR). Understanding the impact of these stressors on secondary lymphoid tissues, such as the spleen and intestine, is crucial for ensuring crewmembers' well-being, given the impracticality of conducting this research with human samples. Using a ground-based facility, we exposed C57BL/6 female and male mice to CIR (1.74 Gy at a dose rate of 0.0029 Gy/h) and/or simulated MG (SMG) via hind limb unloading (HLU) for one month. Spleen and intestinal tissues were …


Cover Pages For Tgle Vol. 58 Nos 1 & 2 Sep 2025

Cover Pages For Tgle Vol. 58 Nos 1 & 2

The Great Lakes Entomologist

Cover Pages for TGLE Vol. 58 Nos 1 & 2


Sensory And Chemical Characterization Of Upcycled Pomace- And Whey-Based Piquette Beverages, Dean G. Hauser, Rahul Sen, Scott R. Lafontaine, Chris Gerling, Luann M. Preston-Wisley, Timothy A. Demarsh, Samuel D. Alcaine Sep 2025

Sensory And Chemical Characterization Of Upcycled Pomace- And Whey-Based Piquette Beverages, Dean G. Hauser, Rahul Sen, Scott R. Lafontaine, Chris Gerling, Luann M. Preston-Wisley, Timothy A. Demarsh, Samuel D. Alcaine

Food Science Faculty Publications and Presentations

Upcycling, or utilizing materials that would otherwise go to waste, enables the creation of novel products that offer sustainability advantages and generate additional value. This study evaluates the feasibility of producing alcoholic beverages using yogurt acid whey (YAW) and grape pomace (GP), byproducts of the dairy and wine industries, respectively, and compares them to commercial grape pomace beverages (piquettes) in terms of sensory attributes and chemical composition. Two YAW-GP piquettes were produced, and five commercial piquettes were obtained. Sugars and organic acids were quantified using HPLC-RID, and semi-quantitative volatile composition was determined using HS-SPME-GC-MS/MS. Descriptive analysis was conducted using a …


Nanovesicles Derived From Protocorm-Like Bodies Of Dendrobium Officinal Enhance Corneal Epithelial Repair And Reduce Inflammation In Dry Eye Disease Models, Bao Yuqing, Peng Chengyu, Zhang Fenglei, Zheng Yuqiang, Zhang Mingqi, He Wei Sep 2025

Nanovesicles Derived From Protocorm-Like Bodies Of Dendrobium Officinal Enhance Corneal Epithelial Repair And Reduce Inflammation In Dry Eye Disease Models, Bao Yuqing, Peng Chengyu, Zhang Fenglei, Zheng Yuqiang, Zhang Mingqi, He Wei

Journal of Food and Drug Analysis

Plant-derived nanovesicles (PDNVs) offer a promising, biocompatible therapeutic platform. In this study, we isolatednanovesicles from protocorm-like bodies of Dendrobium officinale (PLBs-NVs) and evaluated their efficacy in dry eyedisease (DED) models. PLBs-NVs protected human corneal epithelial cells against hyperosmotic stress, supportedwound repair, and inhibited inflammation in vitro. In a desiccating stress-induced DED mouse model, topical PLBs-NVstreatment significantly restored tear secretion, reduced corneal epithelial damage, and lowered levels of proinflammatorycytokines. These results suggest that PLBs-NVs are a safe, natural, and effective therapeutic strategy for DED, sup-porting their potential for future clinical translation in ocular surface disorders.


Anti-Neuroinflammatory Polyketides From The Medicinal Herb-Derived Fungal Strain Didymocyrtis Brachylaenae Km1530, Chia-Hao Chang, Yun-Rong Zhang, Shu-Jung Huang, George Hsiao, Wei-Chiung Chi, Andrea Gu, Yu-Wei Lai, Tzong-Huei Lee Sep 2025

Anti-Neuroinflammatory Polyketides From The Medicinal Herb-Derived Fungal Strain Didymocyrtis Brachylaenae Km1530, Chia-Hao Chang, Yun-Rong Zhang, Shu-Jung Huang, George Hsiao, Wei-Chiung Chi, Andrea Gu, Yu-Wei Lai, Tzong-Huei Lee

Journal of Food and Drug Analysis

A series of chromatographic separation on the liquid-state fermented products of Didymocyrtis brachylaenae Km1530 derived from the littoral medicinal herb Atriplex maximowicziana Makino, resulted in the isolation of compounds 1—13. Their structures were determined by spectroscopic analysis as fivepreviously unreported C13 polyketides, namely brachylactones A—D (1—4) and brachic acid (5), along with eight known compounds 6—13. Among these, brachy-lactones A (1) and B (2) exhibited nitric oxide production inhibitory activity in lipopolysaccharide-induced murine BV- 2 microglial cells at a concentration of 20 μM without any cytotoxicity.


Repurposing Dihydroartemisinin As A Novel Anticancer Agent Against Colorectal Cancer Stem Cells, Meng-Han Wu, Chieh-Ju Sung, Fan-Lu Kung, Jih-Hwa Guh, Yu Su, Lih-Ching Hsu Sep 2025

Repurposing Dihydroartemisinin As A Novel Anticancer Agent Against Colorectal Cancer Stem Cells, Meng-Han Wu, Chieh-Ju Sung, Fan-Lu Kung, Jih-Hwa Guh, Yu Su, Lih-Ching Hsu

Journal of Food and Drug Analysis

Colorectal cancer (CRC) is one of the leading causes of cancer-related death globally and discovering novel therapeuticagents to treat the disease, and prevent cancer metastasis and recurrence is an urgent medical need. Cancer stem cells(CSCs) capable of self-renewal and differentiation are generally considered the cause of tumor metastasis, recurrenceand chemoresistance. Hence, targeting CSCs may be a promising strategy for the treatment of cancer. GATA6, a zincfinger transcription factor, contributes to tumorigenesis in CRC and is related to cancer stemness. GATA6-overexpressing stable clones OE4 and OE6 derived from HCT116 cells were previously established and exhibitedincreased stemness properties. In this study, we …


Precision Nanomedicine For Anxiety: Challenges, Opportunities, And Future Directions In Targeted Drug Delivery, Sehrabpreet Singh, Amanpreet Singh, Shruti Chittu, Shailesh Sharma Sep 2025

Precision Nanomedicine For Anxiety: Challenges, Opportunities, And Future Directions In Targeted Drug Delivery, Sehrabpreet Singh, Amanpreet Singh, Shruti Chittu, Shailesh Sharma

Journal of Food and Drug Analysis

Nanoparticle-based drug delivery system represents one of the challenging strategies suggested to improve anxietydisorder therapeutic approaches, clinic challenges of delayed action, side effect-free designing and poor patientcompliance. Traditional pharmacological agents can increase drug bioavailability and target specific brain regions,whereas nanoparticle-mediated controlled release offers enhanced precision and sustained action. The others in thisreview concentrate on several kinds of nanoparticle, including lipid-based, polymeric-metallic, and responsive nano-particles, their use in anxiety medication. In addition, emphasis is placed on precision medicine that pertain the delivery of treatment based on an individual's genetic, environmental and lifestyle aspects. Also, it is looked into how artificial intelligence …


Targeted Nanosponge-Based Treatment For Pulmonary Hypertension: A Novel Approach, Jashanpreet Kaur, Gursimran Kaur, Chamanpreet Kaur, Sandeep Kumar Sep 2025

Targeted Nanosponge-Based Treatment For Pulmonary Hypertension: A Novel Approach, Jashanpreet Kaur, Gursimran Kaur, Chamanpreet Kaur, Sandeep Kumar

Journal of Food and Drug Analysis

Pulmonary Hypertension (PH) is a progressive and potentially fatal condition marked by high pulmonary arterypressure, resulting in heart failure and reduced oxygenation. Despite advancements in treatments, therapeutic optionsfor PH remain limited, particularly in cases resistant to conventional therapies. In biomedical research, nanotechnologyhas become a potential area of study, presenting novel approaches to drug delivery and tissue targeting. Nanosponges, aclass of nanoparticles with porous structures, have gained attention for their ability to encapsulate therapeutic agents,enhance drug stability, and provide controlled release. Nanosponges can be engineered to deliver vasodilators, anti-inflammatory drugs, and gene therapies directly to the pulmonary vasculature, minimizing systemic side …


A Time Series Analysis Of Herd Investor Behavior Using Online And Social Media Data, Michael L. Smith, Valerie Kilders, Todd Kuethe, Nicole Olynk Widmar Sep 2025

A Time Series Analysis Of Herd Investor Behavior Using Online And Social Media Data, Michael L. Smith, Valerie Kilders, Todd Kuethe, Nicole Olynk Widmar

Department of Agricultural Economics Faculty Publications

We examine the relationship between market performance of leading cryptocurrencies (Bitcoin and Ethereum), meme-stocks (AMC, GameStop), and subjects of corporate boycotts (Bud Light) using weekly market price and volume data along with social media data of weekly mentions (which total 337 million in this dataset) and net sentiment. Using vector autoregression (VAR) time series analysis along with Granger causality testing and structural breaks, we successfully predict trade volume of these various assets using social media data and price data. We also find that closing price data and trade volume are reliable predictors of net sentiment about crypto in online and …


Warming Induces Unexpectedly High Soil Respiration In A Wet Tropical Forest, Tana E. Wood, Colin Tucker, Aura M. Alonso-Rodríguez, M. Isabel Loza, Iana F. Grullón-Penkova, Molly A. Cavaleri, Christine S. O'Connell, Sasha C. Reed Sep 2025

Warming Induces Unexpectedly High Soil Respiration In A Wet Tropical Forest, Tana E. Wood, Colin Tucker, Aura M. Alonso-Rodríguez, M. Isabel Loza, Iana F. Grullón-Penkova, Molly A. Cavaleri, Christine S. O'Connell, Sasha C. Reed

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Tropical forests are a dominant regulator of the global carbon cycle, exchanging more carbon dioxide with the atmosphere than any other terrestrial biome. Climate models predict unprecedented climatic warming in tropical regions in the coming decades; however, in situ field warming studies are severely lacking in tropical forests. Here we present results from an in situ warming experiment in Puerto Rico, where soil respiration responses to +4 oC warming were assessed half-hourly for a year. Soil respiration rates were 42-204% higher in warmed relative to ambient plots, representing some of the highest soil respiration rates reported for any …


Elevated Nr2f1 Underlies The Persistence Of Invasive Disease After Treatment Of Braf-Mutant Melanoma, Manoela Tiago, Timothy J Purwin, Casey D Stefanski, Renaira Oliveira Da Silva, Mitchell E Fane, Yash Chhabra, Jelan I Haj, Jessica Lf Teh, Rama Kadamb, Weijia Cai, Sheera R Rosenbaum, Vivian Chua, Nir Hacohen, Michael A Davies, Jessie Villanueva, Inna Chervoneva, Ashani T Weeraratna, Dan A Erkes, Claudia Capparelli, Julio A Aguirre-Ghiso, Andrew E Aplin Sep 2025

Elevated Nr2f1 Underlies The Persistence Of Invasive Disease After Treatment Of Braf-Mutant Melanoma, Manoela Tiago, Timothy J Purwin, Casey D Stefanski, Renaira Oliveira Da Silva, Mitchell E Fane, Yash Chhabra, Jelan I Haj, Jessica Lf Teh, Rama Kadamb, Weijia Cai, Sheera R Rosenbaum, Vivian Chua, Nir Hacohen, Michael A Davies, Jessie Villanueva, Inna Chervoneva, Ashani T Weeraratna, Dan A Erkes, Claudia Capparelli, Julio A Aguirre-Ghiso, Andrew E Aplin

Faculty, Staff and Student Publications

Despite the success of targeted inhibitors in cutaneous melanoma, therapeutic responses are limited by the aged tumor microenvironment and drug-tolerant residual cells. Given the similarities between drug tolerance and cellular dormancy, we studied the dormancy marker, nuclear receptor subfamily 2 group F member 1 (NR2F1), in response to BRAF-V600E inhibitors (BRAFi) plus MEK inhibitors (MEKi) in BRAF-mutant melanoma models. Transcriptomic analysis of melanoma patient samples treated with BRAFi + MEKi showed increased NR2F1. NR2F1 was highly expressed in the drug-tolerant invasive cell state of minimal residual disease in patient-derived and mouse-derived xenografts on BRAFi + MEKi. NR2F1 over-expression was sufficient …


Impact Of Plasma-Activated Water On Breast Cancer Cell Viability, Maryam G. Jasim, Hammad R. Humud Sep 2025

Impact Of Plasma-Activated Water On Breast Cancer Cell Viability, Maryam G. Jasim, Hammad R. Humud

Karbala International Journal of Modern Science

Plasma-activated water (PAW) was generated using a dielectric barrier discharge (DBD) plasma system operating with a 1:1 mixture of nitrogen and argon gases to evaluate its cytotoxic effects on MCF-7 breast cancer cells. Water samples were divided into five groups: 0 minutes (control), 5, 10, 15, and 20 minutes of plasma exposure. The resulting PAW was applied to cultured cells, and cell viability was assessed 24- and 48-hour post-treatment. Viability was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The results showed an apparent time-dependent increase in cytotoxicity. At 24 hours, cell mortality rates were 1.9%, 40.7%, 48.1%, 53.6%, …


Biophobia And Pet Ownership: Can Having A Pet Mitigate Our Fear And Aversion Towards Nature?, Alexia Barrable Sep 2025

Biophobia And Pet Ownership: Can Having A Pet Mitigate Our Fear And Aversion Towards Nature?, Alexia Barrable

The International Journal of Ecopsychology (IJE)

Biophobia, which we defined as fear, disgust, or aversion toward natural environments or organisms, has received little empirical attention when compared to biophilia, despite its implications for human and planetary wellbeing. This mixed-methods study explores the relationship between pet ownership, biophobia, and nature connectedness among 373 English- speaking adults. Quantitative findings reveal that (M = 26.4) exhibit significantly lower levels of biophobia than non-pet owners (M = 30.1; U = 5179, Z = -2.95, p = .002, R = 0.27), although no significant differences in nature connectedness were found across pet ownership (U = 7033, Z = 0.31, p = …


Postscript: A Historical Interlude, George Conesa Sep 2025

Postscript: A Historical Interlude, George Conesa

The International Journal of Ecopsychology (IJE)

Ravens fly in circles above our heads. Coyote peers from the hedge but dares not. Kachinas have not danced. The awelos tried but youth went their own way.


Bonding With Earth: Hyperbole, Metaphor, Or Fanciful Teleology?, George Conesa Sep 2025

Bonding With Earth: Hyperbole, Metaphor, Or Fanciful Teleology?, George Conesa

The International Journal of Ecopsychology (IJE)

At a mere glance, the notion that humans could (should strive for?) bond emotionally with an entire planet, Earth, sounds hyperbolic at best and psychologically unsound at worst. For although humans might be motivated to act in ways that pass for “bonding,” perhaps assisted by intentions and sentiments to care for a whole planet, the question remains: Which notion of Earth are they really investing all their emotions in? Important to psychologists would be to inquire whether incomplete, idealized, oversimplified, or fantastic notions of “Earth,” or bonding, turn out to be transference-love-like, platonic, overidealized forms of affect, which seldom develop …


Structural Analysis Of Pseudomonas Phage Dev Virion-Associated Rna Polymerase (Gp71), James Scherer Sep 2025

Structural Analysis Of Pseudomonas Phage Dev Virion-Associated Rna Polymerase (Gp71), James Scherer

All ETDs from UAB

DEV is a Pseudomonas aeruginosa bacteriophage part of a newly reclassified genus called Schitoviridae. This group of bacteriophages is also referred to as “N4-like” phages, after the prototypical Escherichia coli phage N4, originally isolated from sewage water in 19661. N4, and other phages in the group, contain a large, virion-associated RNA polymerase (vRNAP). This vRNAP is vital to the proliferation of the phage, as it performs the transcription of the early gene products and potentially acts as a motor that helps eject the viral genome into the host bacteria. In DEV, the vRNAP is also known as gene product 71 …


A Novel Sialylation Pathway Mediated By Extracellular Vesicles In Aggressive Prostate Cancer, Camila A. Bach, Md Niamat Hossain, Ishan J. Chaudhari, Cecilia E. Verrillo, Nicole M. Naranjo, Isabella Amoroso, Anna Testa, Samuel Sey, W. Kevin Kelly, Susan L. Bellis, Aurelio Lorico, Ada G. Blidner, Gabriel A. Rabinovich, Lucia R. Languino Sep 2025

A Novel Sialylation Pathway Mediated By Extracellular Vesicles In Aggressive Prostate Cancer, Camila A. Bach, Md Niamat Hossain, Ishan J. Chaudhari, Cecilia E. Verrillo, Nicole M. Naranjo, Isabella Amoroso, Anna Testa, Samuel Sey, W. Kevin Kelly, Susan L. Bellis, Aurelio Lorico, Ada G. Blidner, Gabriel A. Rabinovich, Lucia R. Languino

Department of Pharmacology, Physiology, and Cancer Biology Faculty Papers

Altered cell surface glycosylation is a hallmark of cancer; among aberrant glycan structures, hypersialylated proteins contribute to disease progression. The enzyme ST6 β-galactoside α2,6-sialyltransferase 1 (ST6GAL1) mediates α2,6-linked sialylation of N-glycosylated proteins and is upregulated in many cancers, including prostate cancer (PrCa). We propose that ST6GAL1 may be released by cancer cells in small extracellular vesicles (sEVs) in the PrCa tumor microenvironment to potentially modulate cell surface sialylation in recipient cells. We isolated sEVs from PrCa cells by density gradient separation and characterized them by nanoparticle tracking analysis using ZetaView and immunoblotting analysis. We identified ST6GAL1 in both its membrane-bound …


Loss Of Ptdss1 In Tumor Cells Improves Immunogenicity And Response To Anti-Pd-1 Therapy, Jielin Liu, Shelley Herbrich, Sreyashi Basu, Yulong Chen, Ashwat Nagarajan, Swetha Anandhan, Sangeeta Goswami, Liangwen Xiong, Baoxiang Guan, Padmanee Sharma Sep 2025

Loss Of Ptdss1 In Tumor Cells Improves Immunogenicity And Response To Anti-Pd-1 Therapy, Jielin Liu, Shelley Herbrich, Sreyashi Basu, Yulong Chen, Ashwat Nagarajan, Swetha Anandhan, Sangeeta Goswami, Liangwen Xiong, Baoxiang Guan, Padmanee Sharma

Faculty, Staff and Student Publications

PTDSS1 (phosphatidylserine synthase 1) encodes an enzyme that facilitates production of phosphatidylserine (PS), which mediates a global immunosuppressive signal. Here, based on in vivo CRISPR screen, we identified PTDSS1 as a target to improve anti-PD-1 therapy. Depletion of Ptdss1 in tumor cells increased expression of interferon-γ (IFN-γ)-regulated genes, including B2m, Cxcl9, Cxcl10, and Stat1, even in the absence of IFN-γ stimulation in vitro. Loss of Ptdss1 in tumor cells also led to increased expression of MHC-I, enhanced cytotoxicity of CD8+ T cells, and increased frequency of an iNOS+ myeloid subset. A gene signature derived from the …


Amaranthus Spp. Control And Sweetpotato Tolerance To Fluridone-Containing Herbicide Programs, Stephen L. Meyers, Katherine M. Jennings, Mark W. Shankle, Jeffrey L. Main Sep 2025

Amaranthus Spp. Control And Sweetpotato Tolerance To Fluridone-Containing Herbicide Programs, Stephen L. Meyers, Katherine M. Jennings, Mark W. Shankle, Jeffrey L. Main

Publications

Click on author name to view affiliation information Article Category: Research Article Online Publication Date: 12 Sept 2025 Page(s): 843 – 847 Volume/Issue: Volume 35: Issue 5 DOI: 10.21273/HORTTECH05727-25

Open Access

Abstract

Field studies were conducted at the Pontotoc Ridge–Flatwoods Branch Experiment Station in Pontotoc, MS, USA and the Horticultural Crops Research Station in Clinton, NC, USA in 2015 to determine pigweed (Amaranthus spp.) control and sweetpotato (Ipomoea batatas) crop response to fluridone herbicide. Treatments consisted of 168 g·ha−1 a.i. fluridone alone or tank-mixed with 54 g or 107 g·ha−1 a.i. flumioxazin applied pretransplanting, fluridone/flumioxazin …


Probiotic Biogeography In The Neonatal Intestine, Sierra Hansen Sep 2025

Probiotic Biogeography In The Neonatal Intestine, Sierra Hansen

All ETDs from UAB

Neonatal infection remains a leading cause of both neonatal morbidity and mortality worldwide, particularly in preterm infants. Probiotic bacteria have been demonstrated to protect against the development of neonatal intestinal dysbiosis, however, formulations and efficacy vary substantially, highlighting a critical gap in the current understanding of the mechanisms governing probiotic efficacy in this population. This gap is exacerbated by regulatory standards which favor economic expansion over scientific rigor. Furthermore, current studies on probiotic efficacy largely rely on indirect or relative readouts of intestinal bacterial burden. Herein, we directly quantify the probiotic effects of Ligilactobacillus murinus V10 and Escherichia coli Nissle …


Lineage-Associated Zinc Metalloprotease B And Its Impact On Cardiac Damage Elicited During Invasive Pneumococcal Disease, Jennifer Nichelle Luck Sep 2025

Lineage-Associated Zinc Metalloprotease B And Its Impact On Cardiac Damage Elicited During Invasive Pneumococcal Disease, Jennifer Nichelle Luck

All ETDs from UAB

During invasive disease, certain strains of Streptococcus pneumoniae (Spn) can invade the myocardium, damaging cardiomyocytes and predisposing patients to life-threatening cardiac complications. To identify genetic loci involved in pneumococcal cardio-virulence, we performed a bacterial genome-wide association study using 825 genomes corresponding to 17 distinct Spn lineages associated with varying rates of cardiac complications during hospitalization for pneumonia. This led to the identification of an allele of zmpB, the gene encoding Zinc metalloprotease B (ZmpB). Infection of mice with a ZmpB deficient mutant, i.e., TIGR4ΔzmpB, found that ZmpB was required to form foci of infection in the heart, i.e., cardiac microlesions. …


Mechanistic Rationale For Toxic Aerosol Formation From Vaping And Dabbing With A Focus On Ketene Formation From Semi-Synthetic Cannabinoids, Kaelas Ryan Munger Sep 2025

Mechanistic Rationale For Toxic Aerosol Formation From Vaping And Dabbing With A Focus On Ketene Formation From Semi-Synthetic Cannabinoids, Kaelas Ryan Munger

Dissertations and Theses

Cannabis vaping is a relatively new route of administration that is increasingly common among youth and young adults. Cannabis vaping has been associated with cases of acute lung injury, especially among youth, and most often involves the heating and aerosolization of high-potency products having cannabinoid concentrations of ~ 50 % - 98 % w/w. Proponents argue that vaping is safer than smoking due to the characteristically lower temperatures and fewer plant materials. However, the extreme cannabinoid concentrations, along with non-natural formulations having undisclosed additives, require studies of the health effects of these products. Despite the popularity of cannabis concentrate vaping, …


The Role Of Histone Deacetylase Complexes In Cardiomyocyes And Heart Diseases, Meimei Wang Sep 2025

The Role Of Histone Deacetylase Complexes In Cardiomyocyes And Heart Diseases, Meimei Wang

All ETDs from UAB

Histone deacetylase complexes play pivotal roles in cardiac biology, however their specific functions in cell fate transitions and adult heart maintenance re-main unclear. We identified the role of HDAC complex in vitro during direct cardiac repro-gramming and in vivo through specific cardiomyocyte deletion of ELMSAN1, a core component of the MiDAC complex. We perform direct cardiac reprogram-ming using a polycistronic construct (hMGT133) expressing MEF2C, GATA4, TBX5, and miR-133. MEF2C expression peaked early, while cardiac markers such as cardiac troponin and α-actinin emerged by Day 9. HDAC1 levels and global histone acetylation (H3K9ac, H3K14ac, H3K27ac) declined over time. An RNAi screen …


Structural Basis For Promoter Recognition By Pseudomonas Phage Dev Virion Associated Rna Polymerase, Brittney Bird Sep 2025

Structural Basis For Promoter Recognition By Pseudomonas Phage Dev Virion Associated Rna Polymerase, Brittney Bird

All ETDs from UAB

Bacteriophage DEV, a member of the Schitoviridae family, encodes a large virion-associated RNA polymerase (vRNAP) and shows significant potential for use in phage therapy. However, many aspects of DEV’s biology remain poorly understood, especially how it regulates transcription once inside the host. Recent work in our lab suggests that gene product 71 (gp71) functions as a DNA-dependent vRNAP. Analogous to the vRNAP of coliphage N4, gp71 likely initiates transcription by recognizing single-stranded DNA templates that contain early gene hairpin promoters. Based on this, my working hypothesis is that specific interactions between gp71 and the DEV early promoters PE1 and PE5 …


Characterizing The Role Of Pneumococcal Surface Protein A And Humoral Immunity To Biofilm Antigens During Streptococcus Pneumoniae Colonization, Jessica Lane Sep 2025

Characterizing The Role Of Pneumococcal Surface Protein A And Humoral Immunity To Biofilm Antigens During Streptococcus Pneumoniae Colonization, Jessica Lane

All ETDs from UAB

Streptococcus pneumoniae (Spn), or “the pneumococcus”, is a Gram-positive bacterium that colonizes the upper respiratory tract as a pathobiont. Spn is a deadly human pathogen, and one of the leading etiological agents of community-acquired pneumonia (CAP). One virulence factor of Spn is pneumococcal surface protein A (PspA), a choline-binding protein (CBP) at the surface of the bacteria that interacts with the host environment. Here, we demonstrated a novel role for PspA involving adhesion to dying host nasal epithelial cells via a multimeric complex with host lactoferrin (LF) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH). We found that the PspA-GAPDH complex aggregated the bacteria …


The Hepatic Glucagon Receptor As A Novel Regulator Of Lifespan, Alexander Tate Lasher Sep 2025

The Hepatic Glucagon Receptor As A Novel Regulator Of Lifespan, Alexander Tate Lasher

All ETDs from UAB

In developed nations the average lifespan has nearly doubled over the last 200 years, and the proportion of humans living into old age is ever increasing. While this is certainly a testament to the effectiveness of modern medicine and infrastructure, it presents a unique challenge to public health. Gains to health have not necessarily kept pace with the gains in lifespan, and the expanding aged population positions age-associated diseases to reach unprecedented prevalence. In light of this challenge, a mechanistic understanding of the aging process is necessary to identify factors that control longevity and to ultimately develop strategies for healthy …


Influenza A Virus Increases Susceptibility To Streptococcus Pneumoniae By Damaging The Airway Epithelium, Erin Yepsen Earnhardt Sep 2025

Influenza A Virus Increases Susceptibility To Streptococcus Pneumoniae By Damaging The Airway Epithelium, Erin Yepsen Earnhardt

All ETDs from UAB

Influenza A Virus (IAV) is commonly complicated by secondary bacterial infections with Streptococcus pneumoniae (Spn), leading to increased morbidity and mortality. Recent work from our lab demonstrates that an IAV-induced loss of cystic fibrosis transmembrane conductance regulator (CFTR) in the airway disrupts the rheostatic properties of the airway surface liquid (ASL). In cystic fibrosis, caused by mutations in the CFTR gene, there is an increase in the bacterial burden of the airway. However, the underlying mechanisms and damage caused by IAV-induced CFTR dysfunction in the airway remains unknown. Using a primary differentiated human bronchial airway epithelial cell culture (HBEC) system, …