Medicine and Health Sciences Commons^™

Reduced Serum Concentrations Of Reactive Oxygen And Nitrogen Species Following Strenuous Exercise In The Heat Are Not Associ-Ated With An Upregulation In Serum Antioxidative Capacity, Sebastian Keller, Hannah Lisa Notbohm, Wilhelm Bloch, Moritz Schumann

Baltic Journal of Health and Physical Activity

Introduction: Reactive oxygen and nitrogen species (RONS) are produced as a response to exercise and play a part in guiding the adaptive response to physical training. Exercise in the heat has been shown to further increase accumulation of RONS in systemic circulation; however, a high antioxidative response or heat acclimatization mechanisms could attenuate this response. In a previous study, we found reduced RONS concentrations in trained athletes following strenuous cycling in the heat. Therefore, this secondary analysis assessed whether these reduced RONS serum concentrations are induced by an increased serum antioxidant capacity. Methods: Twelve male cyclists (V̇O_2peak: 60 …

Expression And Localization Of Nrf2/Keap1 Signalling Pathway Genes In Mouse Preimplantation Embryos Exposed To Free Fatty Acids., Grace Dionne, Michele D. Calder, Dean H Betts, Basim Abu Rafea, Andrew J Watson

Obstetrics & Gynaecology Publications

Obese women experience greater incidence of infertility, with reproductive tracts exposing preimplantation embryos to elevated free fatty acids (FFA) such as palmitic acid (PA) and oleic acid (OA). PA treatment impairs mouse preimplantation development in vitro, while OA co-treatment rescues blastocyst development of PA treated embryos. In the present study, we investigated the effects of PA and OA treatment on NRF2/Keap1 localization, and relative antioxidant enzyme (Glutathione peroxidase; Gpx1, Catalase; Cat, Superoxide dismutase; Sod1 and γ-Glutamylcysteine ligase catalytic unit; Gclc) mRNA levels, during in vitro mouse preimplantation embryo development. Female mice were superovulated, mated, and embryos cultured in the presence …

Piperine Attenuates Cigarette Smoke-Induced Oxidative Stress, Lung Inflammation, And Epithelial-Mesenchymal Transition By Modulating The Sirt1/Nrf2 Axis, Pritam Saha, Sneha Durugkar, Siddhi Jain, P A Shantanu, Samir R Panda, Aishwarya Jala, Sharad Gokhale, Pawan Sharma, V G M Naidu

Center for Translational Medicine Faculty Papers

Piperine (PIP) is a major phytoconstituent in black pepper which is responsible for various pharmacological actions such as anti-inflammatory, antioxidant, and antitumor activity. To investigate the effects and mechanisms of PIP on cigarette smoke (CS)-induced lung pathology using both in-vitro and in-vivo models. BEAS-2B and A549 cells were exposed to CS extract (CSE) for 48 h; BALB/c mice were exposed to CS (9 cigarettes/day, 4 days) to induce features of airway disease. PIP at doses of (0.25, 1.25, and 6.25 µM, in vitro; 1 and 10 mg/kg, in vivo, i.n) and DEX (1 µM, in vitro; 1 mg/kg, in vivo, …

Effects Of Substance Use Disorder On Oxidative And Antioxidative Stress Markers: A Systematic Review And Meta-Analysis, Thiago Wendt Viola, Rodrigo Orso, Luisa Fossati Florian, Miguel Gomes Garcia, Marco Giovanni Signor Gomes, Eduarda Mascarenhas Mardini, João Paulo Ottolia Niederauer, Aline Zaparte, Rodrigo Grassi-Oliveira

School of Medicine Faculty Publications

Recently, it has been suggested that central and peripheral toxicities identified in persons with substance use disorder (SUD) could be partially associated with an imbalance in reactive oxygen species and antioxidant defenses. We conducted a systematic review and meta-analysis to investigate whether SUD is associated with oxidative stress and to identify biomarkers possibly more affected by this condition. We have included studies that analysed oxidant and antioxidant markers in individuals with SUD caused by stimulants, alcohol, nicotine, opioids, and others (cannabis, inhalants, and polysubstance use). Our analysis showed that persons with SUD show higher oxidant markers and lower antioxidant markers …

Preconditioning By Voluntary Wheel Running Attenuates Later Neuropathic Pain Via Nuclear Factor E2-Related Factor 2 Antioxidant Signaling In Rats, Suzanne M Green-Fulgham, Michael E Harland, Jayson B Ball, Jiahe Li, Michael J Lacagnina, Heather D'Angelo, Renee A Dreher, Kendal F Willcox, Sabina A Lorca, Andrew J Kwilasz, Steven F Maier, Linda R Watkins, Peter M Grace

Student and Faculty Publications

Animal and human studies have shown that exercise prior to nerve injury prevents later chronic pain, but the mechanisms of such preconditioning remain elusive. Given that exercise acutely increases the formation of free radicals, triggering antioxidant compensation, we hypothesized that voluntary running preconditioning would attenuate neuropathic pain by supporting redox homeostasis after sciatic nerve injury in male and female rats. We show that 6 weeks of voluntary wheel running suppresses neuropathic pain development induced by chronic constriction injury across both sexes. This attenuation was associated with reduced nitrotyrosine immunoreactivity-a marker for peroxynitrite-at the sciatic nerve injury site. Our data suggest …

Malic Enzyme 1 Absence In Synovial Sarcoma Shifts Antioxidant System Dependence And Increases Sensitivity To Ferroptosis Induction With Acxt-3102, Caitlyn B Brashears, Bethany C Prudner, Richa Rathore, Katharine E Caldwell, Sara E S Lange, Jennifer K Sehn, Dirk Spitzer, Regis O'Keefe, Jason M Held, William Hawkins, Brian A Van Tine, Carina A. Dehner, Et Al

2020-Current year OA Pubs

PURPOSE: To investigate the metabolism of synovial sarcoma (SS) and elucidate the effect of malic enzyme 1 absence on SS redox homeostasis.

EXPERIMENTAL DESIGN: ME1 expression was measured in SS clinical samples, SS cell lines, and tumors from an SS mouse model. The effect of ME1 absence on glucose metabolism was evaluated utilizing Seahorse assays, metabolomics, and C13 tracings. The impact of ME1 absence on SS redox homeostasis was evaluated by metabolomics, cell death assays with inhibitors of antioxidant systems, and measurements of intracellular reactive oxygen species (ROS). The susceptibility of ME1-null SS to ferroptosis induction was interrogated in vitro …

Nutrigenetic Reprogramming Of Oxidative Stress, Joseph Ryu, Huzeifa Gulamhusein, Jin Kyun Oh, Joseph H. Chang, Jocelyn Chen, Stephen H. Tsang

School of Medicine Publications and Presentations

Retinal disorders such as retinitis pigmentosa, age-related retinal degeneration, oxygen-induced retinopathy, and ischemia-reperfusion injury cause debilitating and irreversible vision loss. While the exact mechanisms underlying these conditions remain unclear, there has been a growing body of evidence demonstrating the pathological contributions of oxidative stress across different cell types within the eye. Nuclear factor erythroid-2-related factor (Nrf2), a transcriptional activator of antioxidative genes, and its regulator Kelch-like ECH-associated protein 1 (Keap1) have emerged as promising therapeutic targets. The purpose of this review is to understand the protective role of the Nrf2-Keap1 pathway in different retinal tissues and shed light on the …

Interactions Among Endothelial Nitric Oxide Synthase, Cardiovascular System, And Nociception During Physiological And Pathophysiological States, Niribili Sarmah, Andromeda M. Nauli, Ahmmed Ally, Surya M. Nauli

Pharmacy Faculty Articles and Research

Nitric oxide synthase (NOS) plays important roles within the cardiovascular system in physiological states as well as in pathophysiologic and specific cardiovascular (CV) disease states, such as hypertension (HTN), arteriosclerosis, and cerebrovascular accidents. This review discusses the roles of the endothelial NOS (eNOS) and its effect on cardiovascular responses that are induced by nociceptive stimuli. The roles of eNOS enzyme in modulating CV functions while experiencing pain will be discussed. Nociception, otherwise known as the subjective experience of pain through sensory receptors, termed “nociceptors”, can be stimulated by various external or internal stimuli. In turn, events of various cascade pathways …

The Involvement Of Oxidative Stress In Non-Hodgkin’S Lymphomas; A Review Of The Literature, Ramona Ingrid Corbeanu, Amelia Maria Găman

Journal of Mind and Medical Sciences

Non-Hodgkin’s malignant lymphomas are a heterogeneous group of hematological malignancies, characterized by a variety of clinical, morphological, histopathological, immuno-histochemical, molecular and evolutionary features. They represent a form of cancer that develops from the lymphatic tissue, as a result of the malignant transformation of B (85%) or T (15%) lymphocytes. Lymphomagenesis is described as a multi-stage process involving the mutation and proliferation of cell clones. Oxidative stress is defined as an imbalance of cellular redox status caused by the production of reactive oxygen species (ROS) and/ or by decreasing antioxidant systems that allows their accumulation in the cell. Small quantities of …

Sex-Specific Alterations In Hepatic Cholesterol Metabolism In Low Birth Weight Adult Guinea Pigs., Ousseynou Sarr, Katherine E Mathers, Christina Vanderboor, Kristina Wiggers, Aditya Devgan, Daniel B Hardy, Lin Zhao, Timothy Regnault

Paediatrics Publications

BACKGROUND: Intrauterine growth restriction and low birth weight (LBW) have been widely reported as an independent risk factor for adult hypercholesterolaemia and increased hepatic cholesterol in a sex-specific manner. However, the specific impact of uteroplacental insufficiency (UPI), a leading cause of LBW in developed world, on hepatic cholesterol metabolism in later life, is ill defined and is clinically relevant in understanding later life liver metabolic health trajectories.

METHODS: Hepatic cholesterol, transcriptome, cholesterol homoeostasis regulatory proteins, and antioxidant markers were studied in UPI-induced LBW and normal birth weight (NBW) male and female guinea pigs at 150 days.

RESULTS: Hepatic free and …

Enzymatic Depletion Of Mitochondrial Inorganic Polyphosphate (Polyp) Increases The Generation Of Reactive Oxygen Species (Ros) And The Activity Of The Pentose Phosphate Pathway (Ppp) In Mammalian Cells, Vedangi Hambardikar, Mariona Guitart-Mampel, Ernest Scoma, Pedro Urquiza, Gowda Nagana, Daniel Raftery, John Collins, Maria Solesio

Department of Orthopaedic Surgery Faculty Papers

Inorganic polyphosphate (polyP) is an ancient biopolymer that is well preserved throughout evolution and present in all studied organisms. In mammals, it shows a high co-localization with mitochondria, and it has been demonstrated to be involved in the homeostasis of key processes within the organelle, including mitochondrial bioenergetics. However, the exact extent of the effects of polyP on the regulation of cellular bioenergetics, as well as the mechanisms explaining these effects, still remain poorly understood. Here, using HEK293 mammalian cells under Wild-type (Wt) and MitoPPX (cells enzymatically depleted of mitochondrial polyP) conditions, we show that depletion of polyP within mitochondria …

The Effect Of Co-Ingesting Beetroot Juice And Vitamin C On Blood Pressure In Hispanic Women: A Literature Review And A Proposal, Mikela De La Flor, Maya Hammer, Noelle Seekamp-Hicks, Rachel Tan

Seaver College Research And Scholarly Achievement Symposium

Dietary nitrate supplementation is known for improving blood pressure through vasodilation and may favorably alter oral microbial populations related to cardiovascular health. Co-ingestion with vitamin C (VITC) may further potentiate these benefits but this remains unexplored. Additionally, this field has yet to examine the influence of sex and ethnicity, which is important given that physiological differences exist between populations. The purpose of this study is to assess the effects of combining dietary nitrate, in the form of beetroot juice, and VITC on blood pressure and the oral microbiome in women of Hispanic, African American, and American descent across multiple institutions. …

Trace Elements, Oxidative Stress Biomarkers And Hemato-Biochemical Indices Of Goat Kids Affected With Nutritional Dependent Locomotor Disturbances, Issam Eljalii, Taha Fouda, Wael El-Deeb, Abdulaziz Almujalli, Sabry M. El-Bahr

The Thai Journal of Veterinary Medicine

This study aimed to investigate the biomedical significant of trace elements, oxidative stress and hemato-biochemical indices in the diagnosis of locomotor disturbances of affected goat kids. Blood samples were collected from 22 goat kids affected with locomotor disturbances. An equal number of healthy goat kids was used as a control. Clinical examination showed anemia and an incoordination in affected animals compared to the control. Malondialdehyde (MDA), creatine kinase (CK) and aspartate aminotransferase (AST) values were significantly higher in affected animals than in the control, while superoxide dismutase (SOD) and reduced glutathione (GSH) values were significantly lower. Concentrations of copper (Cu), …

The Influence Of An Acute Bout Of Aerobic Exercise On Vascular Endothelial Function In Moderate Stages Of Chronic Kidney Disease, Jeffrey S. Forsse, Zacharias Papadakis, Matthew N. Peterson, James Kyle Taylor, Burritt W. Hess, Nicholas Schwedock, Dale C. Allison, Jackson O. Griggs, Ronald L. Wilson, Peter W. Grandjean

Faculty and Student Publications

Chronic kidney disease (CKD) is directly influenced by the deleterious effects of systemic inflammation and oxidative stress. The vascular endothelium may transiently respond to aerobic exercise and improve post-exercise vascular renal function in moderate stages of CKD. Brachial artery flow-mediated dilation (FMD) is a nitric-oxide-dependent measure of endothelial function that is transiently potentiated by exercise. The purpose of the study was to determine the acute influence of a single bout of high-intensity interval exercise (HIIE) or steady-state moderate-intensity exercise (SSE) on endothelial dysfunction in moderate stages of CKD. Twenty participants (n = 6 men; n = 14 women) completed 30 …

Relationships Of Serum Cc16 Levels With Smoking Status And Lung Function In Copd, Kelli C. Gribben, Jill A. Poole, Amy J. Nelson, Paraskevi A. Farazi, Christopher S. Wichman, Art J. Heires, Debra J. Romberger, Tricia D. Levan

Journal Articles: Pulmonary & Critical Care Med

Background: The club cell secretory protein (CC16) has anti-inflammatory and antioxidant effects, and low CC16 serum levels have been associated with both risk and progression of COPD, yet the interaction between smoking and CC16 on lung function outcomes remains unknown.

Methods: Utilizing cross-sectional data on United States veterans, CC16 serum concentrations were measured by ELISA and log transformed for analyses. Spirometry was conducted and COPD status was defined by post-bronchodilator FEV₁/FVC ratio < 0.7. Smoking measures were self-reported on questionnaire. Multivariable logistic and linear regression were employed to examine associations between CC16 levels and COPD, and lung function with adjustment for covariates. Unadjusted Pearson correlations described relationships between CC16 level and lung function measures, pack-years smoked, and years since smoking cessation.

Results: The study population (N = 351) was mostly male, white, with an average age over 60 years. An interaction between CC16 and smoking status on …

Cell Death Induced In Glioblastoma Cells By Plasma-Activated-Liquids (Pal) Is Primarily Mediated By Membrane Lipid Peroxidation And Not Ros Influx, Sebnem Gunes, Zhonglei He, Evanthia Tsoukou, Sing Wei Ng, Daniela Boehm, Beatriz Pinheiro, Paula Bourke, Renee Malone, Patrick J. Cullen, Wenxin Wang, James Curtin

Articles

Since first identified in 1879, plasma, the fourth state of matter, has been developed and utilised in many fields. Nonthermal atmospheric plasma, also known as cold plasma, can be applied to liquids, where plasma reactive species such as reactive Oxygen and Nitrogen species and their effects can be retained and mediated through plasma-activated liquids (PAL). In the medical field, PAL is considered promising for wound treatment, sterilisation and cancer therapy due to its rich and relatively long-lived reactive species components. This study sought to identify any potential antagonistic effect between antioxidative intracellularly accumulated platinum nanoparticles (PtNPs) and PAL. We found …

Antioxidant Biomarkers And Nutraceutical Therapeutics In Neurodegeneration And Neurotrauma, Lilia A. Koza

Electronic Theses and Dissertations

Mild traumatic brain injury (mTBI), yielding a Glascow Coma Scale of 13-15, is the most commonly occurring severity of TBI. Pathology from mTBI consists of blood brain barrier disruption, neuroinflammation, oxidative stress, excitotoxicity, mitochondrial dysfunction, protein aggregation, axonal degeneration, and resulting neuronal death. These processes deplete the body’s endogenous antioxidant system. We report a retrospective analysis of antioxidant blood biomarkers in patients with a history of mTBI from a local sports medicine clinic, Resilience Code. We found persistent sex-specific antioxidant depletions in mTBI patients associated with worsened symptomology.

Certain populations, such as athletes, are at high risk for repetitive mTBI …