Browsing by Subject "Oxidative stress"
Now showing items 1-12 of 12
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American Ginseng Modifies 137Cs-Induced DNA Damage and Oxidative Stress in Human Lymphocytes
(East Carolina University, 2009-01-01)The multifold bioactive medicinal properties of ginseng have been closely linked to its antioxidative ability, which is related to its ginsenoside content. Since the key mechanism of radiation-induced cell death and tissue ... -
Increased DJ-1 expression under oxidative stress and in Alzheimer's disease brains
(East Carolina University, 2009-02-25)Mutations in the DJ-1 gene have been linked to autosomal recessive familial Parkinson's disease. To understand the function of DJ-1, we determined the DJ-1 expression in both zebrafish and post mortem human brains. We found ... -
The Influence of Energy Expenditure on Mitochondrial Functions, Oxidative Stress and Insulin Resistance under Metabolic Oversupply Conditions
(East Carolina University, 2011)Mitochondrial respiratory capacity and oxidative stress have been implicated in the development of insulin resistance (IR) and type II diabetes. A causative role of mitochondrial oxidative stress in the etiology of ... -
Investigations into the roles of bacteroides fragilis thioredoxins during the oxidative stress response
(East Carolina University, 2011)The Gram-negative Bacteroides fragilis is the most frequently isolated bacterium from anaerobic infections. Native to the human intestinal tract, it serves a symbiotic role breaking down complex polysaccharides and ... -
NADPH Oxidase as a Mechanistic Link Between Erectile Dysfunction, Peripheral, and Coronary Endothelial Dysfunction in Obesity
(East Carolina University, 2012)Cardiovascular complications involving both microvascular and macrovascular tissues are the major cause of morbidity and mortality in obese patients. Clinical and epidemiological studies suggest that erectile dysfunction ... -
Oxidative stress response in an anaerobe, Bacteroides fragilis: a role for catalase in protection against hydrogen peroxide.
(East Carolina University, 1996-12)Survival of Bacteroides fragilis in the presence of oxygen was dependent on the ability of bacteria to synthesize new proteins, as determined by the inhibition of protein synthesis after oxygen exposure. The B. fragilis ... -
Radioprotective Effect of American Ginseng on Human Lymphocytes at 90 Minutes Post-irradiation: A Study of 40 Cases
(East Carolina University, 2010-05)Backgroundâ Ionizing radiation (IR) initiates intracellular oxidative stress through enhanced formation of reactive oxygen species (ROS) that attack DNA leading to cell death. As the diversity of IR applied in medicine, ... -
Regulation of Bacteriodes fragilis katB mRNA by oxidative stress and carbon limitation.
(East Carolina University, 1997-11)Regulation of the katB catalase gene in the anaerobic bacterium Bacteroides fragilis was studied. Northern blot hybridization analyses revealed that katB was transcribed as an approximately 1.6-kb monocistronic mRNA. The ... -
Role of the Iron Storage Ferritins Dps and DpsL during the Prolonged Oxidative Stress Response of Bacteroides fragilis
(East Carolina University, 2015-12-02)Bacteroides fragilis is a Gram negative anaerobe and member of the human intestinal tract microbiome. B. fragilis serves many beneficial roles within the intestinal tract; however, its translocation to the peritoneal cavity ... -
Thioredoxin Reductase Is Essential for Thiol/Disulfide Redox Control and Oxidative Stress Survival of the Anaerobe Bacteroides fragilis
(East Carolina University, 2007-11)Results of this study showed that the anaerobic, opportunistic pathogen Bacteroides fragilis lacks the glutathione/glutaredoxin redox system and possesses an extensive number of putative thioredoxin (Trx) orthologs. ... -
Transcriptional Analysis of the Bacteroides fragilis Starch Utilization Operon, osuA
(East Carolina University, 2011)The opportunistic pathogen Bacteroides fragilis is a symbiotic organism that inhabits the human gastrointestinal tract where it utilizes dietary and host-derived polysaccharides as carbon and energy sources. If abdominal ... -
Tumor Growth Induces Oxidative Clustered DNA Lesions Damage in Distant Mouse Tissue in vivo
(East Carolina University, 2010)Our goal was to ascertain if DNA damage induced by oxidative stress is capable of being exploited as a precancerous or cancer biomarker. The specific DNA damage that we assessed was oxidatively induced non-DSB clustered ...