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Oxidative stress response in Shigella & nonpathogenic gut bacteria
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The effect of oxidative stress in the form of exogenous H202 on the survival of four species of Shigella and two nonpathogenic Gram negative gut bacteria and the role of catalase as an antioxidant enzyme, neutralizing the effect of H.02 were examined. A significant decrease in the number of colony forming units (CFUs) after exposure to exogenous H202 (122 +/- 37), compared to control bacteria (218+/- 63, P < 0.001) was observed. There was an induction of catalase activity after exposure to...
Related newspaper, magazine, and journal articles from HighBeam Research
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Use of Biomarkers of Oxidative Stress in Research Studies1,2
The Journal of Nutrition
; EXPANDED ABSTRACT KEY WORDS: * biomarkers * oxidative stress * antioxidants In research studies, biomarkers can be employed to reflect environmental prooxidant exposures and dietary antioxidant intake or to serve as a surrogate measure of a disease process (1,2). To be truly useful, the biomarker
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Oxidative stress in humans during work at moderate altitude
The Journal of Nutrition
; Oxidative Stress in Humans during Work at Moderate Altitude1,2 ABSTRACT Increased oxidative stress has been associated with work at high altitude; however, it is not known whether oxidative stress is a significant problem at moderate altitudes. The oxidative stress indicators, breath pentane
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Oxidative stress in chronic kidney disease.(Issues in Renal Nutrition: Focus on Nutritional Care for Nephrology Patients)
Nephrology Nursing Journal
; Oxidative stress is defined as physiological stress on the body that is caused by the cumulative damage done by free radicals inadequately neutralized by antioxidants. It is imposed on cells as a result of an increase in the generation of oxidants, a failure to repair oxidative damage, or a
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Oxidative Stress Markers Are Associated with Persistent Atrial Fibrillation
Clinical Chemistry
; Background: Atrial fibrillation (AF) has been associated with myocardial oxidative stress, and antioxidant agents have demonstrated antiarrhythmic benefit in humans. We compared serum markers of oxidation and associated inflammation in individuals with or without AF. Methods: Serum markers of
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Dietary modification and moderate antioxidant supplementation differentially affect serum carotenoids, antioxidant levels and markers of oxidative stress in older humans1,2
The Journal of Nutrition
; Manuscript received 28 April 2003. Initial review completed 4 June 2003. Revision accepted 16 July 2003. ABSTRACT Oxidative stress is thought to be a factor in the progression of chronic diseases, and even the aging process itself. We examined the effect of two moderate vitamin, mineral and
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