Dose dependency of l-arginine in neonatal myocardial protection: The nitric oxide paradox
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چکیده
منابع مشابه
Translational control of inducible nitric oxide synthase expression by arginine can explain the arginine paradox.
L-Arginine is the only endogenous nitrogen-containing substrate of NO synthase (NOS), and it thus governs the production of NO during nervous system development as well as in disease states such as stroke, multiple sclerosis, Parkinson's disease, and HIV dementia. The "arginine paradox" refers to the dependence of cellular NO production on exogenous L-arginine concentration despite the theoreti...
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The vascular endothelium synthesizes nitric oxide (NO) from the terminal guanidino nitrogen atom( s) of L-arginine. NO accounts for the biological actions of endotheliumderived relaxing factor (EDRF). It is becoming apparent that the synthesis of NO from L-arginine not only explains endothelium-dependent vascular relaxation, but is a widespread mechanism for the regulation of cell function and ...
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l-Arginine (l-Arg) supplementation has been shown to enhance physical exercise capacity and delay onset of fatigue. This work investigated the potential beneficial mechanism(s) of l-Arg supplementation by examining its effect on the cellular oxidative and nitrosative stress pathways in the exercised rats. Forty-eight rats were randomly divided into six groups: sedentary control; sedentary contr...
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The myeloperoxidase-derived oxidant hypochlorous acid (HOCl) is thought to contribute to endothelial dysfunction, but the mechanisms underlying this inhibitory effect are unknown. The present study tested the hypothesis that HOCl and L-arginine (L-Arg) react to form novel compounds that adversely affect endothelial function by inhibiting nitric oxide (NO) formation. Using spectrophotometric tec...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1999
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(99)70011-5