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Cellular and Molecular Physiology Commons™
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Articles 31 - 46 of 46
Full-Text Articles in Cellular and Molecular Physiology
Diastolic Dysfunction With Vascular Deficits In Hiv-1-Infected Female Humanized Mice Treated With Antiretroviral Drugs, Fadhel A. Alomar, Prasanta K. Dash, Mahendran Ramasamy, Zachary L. Venn, Sean R. Bidasee, Chen Zhang, Bryan T. Hackfort, Santhi Gorantla, Keshore R. Bidasee
Diastolic Dysfunction With Vascular Deficits In Hiv-1-Infected Female Humanized Mice Treated With Antiretroviral Drugs, Fadhel A. Alomar, Prasanta K. Dash, Mahendran Ramasamy, Zachary L. Venn, Sean R. Bidasee, Chen Zhang, Bryan T. Hackfort, Santhi Gorantla, Keshore R. Bidasee
Journal Articles: Cellular & Integrative Physiology
Early-onset heart failure is a major treat to healthy aging individuals with HIV-1 infection. Women with HIV-1 infection (WLWH) are especially vulnerable and develop heart failure with preserved ejection fraction (HFpEF), of which left ventricular diastolic dysfunction, vascular deficits, myocardial infarction, and fibrosis are major components. HIV-infected rodent models that exhibit these pathophysiological features remain under-reported, and this has left a void in our understanding of their molecular causes and therapeutic strategies to blunt its development. Here, we show that female NOD.Cg-PrkdcscidIl2rgtm1Wjl/SzJ humanized mice (Hu-mice) infected with HIV-1ADA and treated for 13 weeks with dolutegravir …
Characterizing And Targeting The Non-Catalytic Functions Of Phosphatase Of Regenerating Liver 3 (Prl-3) In Oncogenesis And Cancer Progression, Jeffery T. Jolly
Characterizing And Targeting The Non-Catalytic Functions Of Phosphatase Of Regenerating Liver 3 (Prl-3) In Oncogenesis And Cancer Progression, Jeffery T. Jolly
Theses and Dissertations--Molecular and Cellular Biochemistry
Phosphatase of Regenerating Liver 3 (PRL-3) is frequently upregulated in various cancers and is associated with poor patient prognosis. Although traditionally studied for its phosphatase activity, PRL-3 also interacts with the CNNM family of magnesium transporters through its catalytic site, and these two functions are mutually exclusive at any given time. Most previous studies relied on a commonly used PRL-3 mutation that disrupts both phosphatase activity and CNNM binding, making it challenging to determine which function drives its oncogenic effects. To address this gap in the field, I utilized a panel of PRL-3 mutants that selectively disrupt either phosphatase activity …
Assessing The Role Of Daily Thermal Fluctuations In The Performance Of Mitochondrial Energy Transduction Of The Centrarchid, Lepomis Cyanellus, Grayson Hofmann
Assessing The Role Of Daily Thermal Fluctuations In The Performance Of Mitochondrial Energy Transduction Of The Centrarchid, Lepomis Cyanellus, Grayson Hofmann
Masters Theses
Freshwater systems are affected by current climate extremes, forcing species found in these systems to withstand drastic changes in temperature. Temperature changes affect these organisms by altering their metabolic rate and energy balance. Increases in temperature can lead to an increase in oxygen consumption, which ultimately increases the need for more energy production. Mitochondrial energy transduction of green sunfish (Lepomis cyanellus) and many other fish species after a thermal insult, has hardly been explored. This study complements the limited research available on mitochondrial function in similar species, as they ignore the possibility of consecutive thermal events, which are …
The Impact Staphylococcus Aureus Has On Conventional And Organic Dairy Herds In New Hampshire And New York, Jacqueline Rose Holmes
The Impact Staphylococcus Aureus Has On Conventional And Organic Dairy Herds In New Hampshire And New York, Jacqueline Rose Holmes
Honors Theses and Capstones
Staphylococcus aureus is a potentially virulent bacterium that causes mastitis in dairy cattle. The toxins produced from S. aureus impact host immunity, damage the mammary gland, and can adapt to cause antimicrobial resistance. It is important to manage both organic and conventional farms correctly by practicing proper hygiene while milking and providing a clean environment. There is a significant increase of S. aureus cases on organic farms compared to conventional, so there may be ways in which organic management and treatment options could be altered to reduce economic loss and animal suffering. The thesis focuses on the involvement S. aureus …
Rad Reduction Reveals Therapeutic Potential Of Targeting Cardiomyocyte L-Type Calcium Channel Regulation For Heart Failure, Garrett Elmore
Rad Reduction Reveals Therapeutic Potential Of Targeting Cardiomyocyte L-Type Calcium Channel Regulation For Heart Failure, Garrett Elmore
Theses and Dissertations--Physiology
Heart failure (HF) is prevalent and is predicted to increase with the aging population. Dilated cardiomyopathy (DCM) is a common cause of systolic HF. Current therapies fail to address principal issues: compromised systolic function and dysfunctional Ca2+ handling. No therapeutic approach exists for direct, positive modulation of cardiomyocyte L-type calcium channels (LTCC). RAD (Ras associated with diabetes) is a key regulator of the cardiac LTCC. RAD is a downstream phosphorylated target of the ß-adrenergic receptor (ß-AR)/cAMP/protein kinase A pathway; phosphorylation augments LTCC activity, contributing to chronotropy, inotropy, and lusitropy. RAD overexpression results in LTCC inhibition, whereas knockout positively modulates …
Metabolic And Barrier Function In Response To Β-Caryophyllene In Intestinal Epithelial Cells, Hannah Scroggins
Metabolic And Barrier Function In Response To Β-Caryophyllene In Intestinal Epithelial Cells, Hannah Scroggins
Theses and Dissertations--Animal and Food Sciences
Butyrate, a short-chain fatty acid, regulates cellular metabolism and energy status in intestinal epithelial cells. β-caryophyllene (BCP) is a plant-derived compound that may provide advantageous effects on intestinal barrier function and nutrient utilization. The goal of this thesis was to investigate the effects of BCP on butyrate utilization and metabolism in intestinal epithelial cells. Throughout this thesis, Caco-2 cells in hanging inserts in multi-well plates were used as a model for the intestinal barrier. One study was conducted to investigate the effect of BCP on butyrate utilization and barrier function in intestinal epithelial cells. A second study aimed to elucidate …
Calculation Of Proton Transmembrane-Electrostatic Interaction Force And Elucidation Of The Water Droplet Experiment With A Transient Protonic Front, James Weifu Lee
Calculation Of Proton Transmembrane-Electrostatic Interaction Force And Elucidation Of The Water Droplet Experiment With A Transient Protonic Front, James Weifu Lee
Chemistry & Biochemistry Faculty Publications
The “transmembrane-electrostatically localized proton(s)/cation(s) charge(s) (TELC(s), also known as TELP(s)) model” may serve as a theoretical framework to explain protonic cell energetics including both delocalized and localized protonic couplings. TELCs are held by their corresponding transmembrane-electrostatically localized hydroxides anions (TELAs) across the membrane through mutual transmembrane-electrostatic attractive force, which is now calculated to be in the range from 1.96 × 10⁻¹¹ to 2.28 × 10⁻¹¹ newtons (N) across a 2.5 nm thick membrane in a range of transmembrane potential from 10 to 200 mV. At a moderate transmembrane potential (100 mV), the protonic transmembrane attractive force is now calculated to …
Caspases Protect Against Hyperglycemia Induced Necroptosis-Like Cell Death In Brain Endothelial Cells, Aleena S. Mathew
Caspases Protect Against Hyperglycemia Induced Necroptosis-Like Cell Death In Brain Endothelial Cells, Aleena S. Mathew
Theses and Dissertations
Acute diabetes characterized by high spikes in blood glucose levels in association with severe hyperglycemia can lead to an increased risk of ischemic stroke in the brain. To better understand high blood glucose levels, hyperglycemia, in the brain we explored its effects on endothelial cells. Endothelial cells line the inner walls of blood vessels and are directly impacted in hyperglycemia. Brain endothelial cells are a major component of the blood brain barrier (BBB) which tightly regulates the brain’s microenvironment. The type of cell death such as apoptosis, caspase dependent, or necroptosis, caspase independent, can exacerbate diabetes associated complications. There is …
Characterization Of Dietary And Hormonal Influences On Renal Sodium Transporters And Channels In Rodent Models, Evelyn Chan
Characterization Of Dietary And Hormonal Influences On Renal Sodium Transporters And Channels In Rodent Models, Evelyn Chan
Scripps Senior Theses
Within kidneys, a diverse array of renal epithelial cells works to maintain electrolyte and water balance to regulate blood pressure and pH. These cells contain varying types of sodium transporters that adjust sodium reabsorption according to the body’s needs. Previous studies have observed sex-specific differences in renal sodium transporter regulation, which are thought to optimize reproduction in females. In this study, we performed high resolution microscopy and detailed characterization of cell type-specific expression and localization of major sodium transporters and channels in rodents in response to dietary and hormonal influences. Specifically, we examined the impact of dietary salt intake and …
Impact Of Tetrahydrocannabinol (Thc) On Daphnia Magna Heart Rate, Ashley Cosgrave
Impact Of Tetrahydrocannabinol (Thc) On Daphnia Magna Heart Rate, Ashley Cosgrave
Williams Honors College, Honors Research Projects
Marijuana (Cannabis) is currently federally illegal within the United States and classified as a Schedule I drug. This leaves a large research gap on the impacts of Tetrahydrocannabinol (THC) use. Daphnia magna are frequently used as a model organism for the human heart and toxicology screenings due to their myogenic heart, similarities in physiological pathways, and sensitivity to toxins. As such, in order to bridge the research gap and uncover potential use of Daphnia magna as a model organism for humans in regard to impact on heart rate, we hypothesized that if Daphnia magna possess CB1 receptors or an equivalent …
Technological Development Of In-Cell Nmr: Microfluidic, Metabolomic, And Fluxomic Approaches, Nicholas Sciolino
Technological Development Of In-Cell Nmr: Microfluidic, Metabolomic, And Fluxomic Approaches, Nicholas Sciolino
Electronic Theses & Dissertations (2024 - present)
In the fields of structural biology, metabolomics, and fluxomics, there is a driving, technique-based concern when it comes to high-resolution spectrometry and its marriage to biological and physiological relevance. Sample preparation often involves cellular perturbation, lysate separation schemes, combinations with non-biological reagents, and timeline slack. Conceptually, the farther we get from the cell, the greater the potential disparity between what exists in vivo and our in vitro manipulations. This is particularly true when seeking to collect data on transfected targets of interest, and on sensitive metabolic equilibria that occur on the order of minutes. The question remains: if we are …
Hypothalamic Paraventricular Nucleus G⍺Q/G⍺S And Rgs2 Signaling Pathways Mediate Sympathoexcitation And Sodium Retention In Hypertension, Shane Harold Boomer
Hypothalamic Paraventricular Nucleus G⍺Q/G⍺S And Rgs2 Signaling Pathways Mediate Sympathoexcitation And Sodium Retention In Hypertension, Shane Harold Boomer
Dissertations and Theses
The hypothalamic paraventricular nucleus (PVN) regulates diverse physiological processes for maintaining homeostasis, modulating functions ranging from fluid balance to sympathetic nervous system activity. Due to its integral connections with various autonomic and endocrine systems, the PVN significantly influences cardiovascular and renal function, notably in blood pressure homeostasis and the development and regulation of hypertension. The regulatory capacity of PVN is mediated through several signaling pathways, including those involving G-protein coupled receptor (GPCR) and G- protein signaling. We hypothesized the altered PVN signaling through Gαq/Gαs and regulators like regulator of G-protein signaling 2 (RGS2) pathways affected sympathetic nerve activity and blood …
Fiber Photometry Analysis Of Spontaneous Dopamine Signals: The Z-Scored Data Are Not The Data, Conner W. Wallace, Clare Y. Slinkard, Rachael Shaughnessy, Katherine M. Holleran, Samuel W. Centanni, Christopher C. Lapish, Sara R. Jones
Fiber Photometry Analysis Of Spontaneous Dopamine Signals: The Z-Scored Data Are Not The Data, Conner W. Wallace, Clare Y. Slinkard, Rachael Shaughnessy, Katherine M. Holleran, Samuel W. Centanni, Christopher C. Lapish, Sara R. Jones
Department of Medicine Faculty Publications
Fluorescent sensors have revolutionized the measurement of molecules in the brain, and the dLight dopamine sensor has been used extensively to examine reward- and cue-evoked dopamine release, but only recently has the field turned its attention to spontaneous release events. Analysis of spontaneous events typically requires evaluation of hundreds of events over minutes to hours, and the most common method of analysis, z-scoring, was not designed for this purpose. Here, we compare the accuracy and reliability of three different analysis methods to identify pharmacologically induced changes in dopamine release and uptake in freely moving C57BL/6J mice. The D1-like receptor antagonist …
Science, Physiology, And Nutrition For The Nonscientist, Judi S. Morrill
Science, Physiology, And Nutrition For The Nonscientist, Judi S. Morrill
Open Educational Resources
A wonderful blend of physiology, nutrition, biochemistry, genetics, biology, evolution, chemistry--what we all need to know as informed citizens. A basic knowledge of the life sciences and how our bodies work--to promote our own good health, especially as we're bombarded with misleading advertisements, soundbites, and the like. DNA fingerprinting, calorie requirements, dietary advice, genetic engineering (including gene editing with CRISPR cas9)--all in an easy-to understand book.
The Role Of Tgf-Beta Superfamily Members In Immune Homeostasis And Disease, Natalie Eva Nieuwenhuizen, Ioannis Eleftherianos, Piotr Jan Kraj, Maria Semitekolou
The Role Of Tgf-Beta Superfamily Members In Immune Homeostasis And Disease, Natalie Eva Nieuwenhuizen, Ioannis Eleftherianos, Piotr Jan Kraj, Maria Semitekolou
Biological Sciences Faculty Publications
[Introduction] The Transforming Growth Factor beta (TGF-beta) superfamily, encompassing molecules such as TGFs, activins, Bone Morphogenetic Proteins (BMPs), Growth/Differentiation Factor (GDFs) and Nodals, represents the largest family of growth and differentiation factors, playing crucial roles in developmental and physiological processes across animal species (1). These molecules are integral to tissue homeostasis and cell fate determination. Among them, TGF-beta is particularly noted for its regulatory influence on immune responses and tissue fibrosis (2, 3). Recent research has expanded our understanding of the immune functions of other superfamily members, including activin A and BMPs (4). These molecules signal through receptor complexes composed …
Reversible Degradation Of Peptidoglycan By Lytic Transglycosylases, Aaron Devereaux
Reversible Degradation Of Peptidoglycan By Lytic Transglycosylases, Aaron Devereaux
Theses and Dissertations (Comprehensive)
Antimicrobial resistance continues to be a burden on the global healthcare system with an estimated cost of billions of dollars and millions of deaths each year. Recently, there has been little to no development on new antibiotics to treat bacterial infection, and any that are developed become resisted to within a few years. Both Gram-positive and Gram-negative bacteria contain a mesh-like layer called peptidoglycan (PG) that surrounds their cells providing strength, cell shape, and protection from their environments. This layer is a polymer of N-acetylmuramic acid (MurNAc) and N-acetylglucosamine (GlcNAc) connected via a b-1,4-glycosidic bond, with each strand being cross-linked …