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Human exercise capacity decreases with aging. One explanation may be that blood vessels stiffen with age and release less of a compound called nitric oxide (NO). This compound normally relaxes blood vessels and increases blood flow to muscles, but damaging compounds called free radicals can interfere with this process. Antioxidants may help prevent free radicals from inactivating nitric oxide. The purpose of this study was to investigate the effects of an antioxidant supplement that supports NO production on exercise performance in elderly male cyclists.
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Basic Science
Arginine antioxidant supplements, Arginine antioxidant supplements
University of California, Los Angeles
University of California, Los Angeles
Published on BioPortfolio: 2014-08-27T03:15:43-0400
RATIONALE: L-arginine supplements may improve the quality of life and sexual function in women who are cancer survivors. PURPOSE: This randomized clinical trial is studying an L-arginine ...
This study is intended to assess the efficacy of L-arginine supplementation with antioxidant vitamins delivered in a medical food in reducing the incidence of preeclampsia in a high-risk p...
This study will investigate the null hypothesis that use of antioxidant supplements during adjuvant chemotherapy will have no impact on toxicities and disease-free, as well as overall, sur...
This study evaluates the effects of vitamin D, anti-oxidants (vitamin C, E, and beta-carotene) and arginine on osteoarthritis (OA) in adults. Participants will be randomly divided into fou...
The purpose of this study is to look at lipid profiles of plasma and RBC and amino acid profiles in plasma to determine if they are associated with allograft rejection, calcineurin inhibit...
The present review highlights the idea that antioxidant supplementation can be optimized when tailored to the precise antioxidant status of each individual. A novel methodologic approach involving per...
The present study assessed the effects of dietary arginine on intestinal antioxidant status and immunity involved in Nrf2 and NF-κB signaling pathway in juvenile blunt snout bream. Fish were fed thre...
This study investigated the synergistic effects of l-arginine and allopurinol on antioxidant and inflammatory mediators in human osteoblasts-osteoarthritis (HOb-OA) cells. The cells were treated with ...
Hyperglycemia results in the overproduction of free oxygen radicals that impair the endogenous antioxidant defenses. A randomized controlled trial was conducted to compare the effect of 3 months of a...
Bioavailability of supplements with coenzyme Q10 (CoQ) in humans seems to depend on the excipients of formulations and on physiological characteristics of the individuals. The aim of this study was to...
An enzyme that activates arginine with its specific transfer RNA. EC 188.8.131.52.
A family of ENZYMES that, in the presence of calcium ion, converts ARGININE to CITRULLINE in proteins.
Nucleotide sequences that are found in the PROMOTER REGIONS of the genes of stress-responsive and cytoprotective proteins, such as those encoding antioxidant and PHASE II DETOXIFICATION enzymes. NF-E2-RELATED FACTOR 2 containing transcription factors bind to these elements during induction of these genes.
An enzyme that catalyzes the phosphorylation of the guanidine nitrogen of arginine in the presence of ATP and a divalent cation with formation of phosphorylarginine and ADP. EC 184.108.40.206.
A natural tocopherol with less antioxidant activity than alpha-tocopherol. It exhibits antioxidant activity by virtue of the phenolic hydrogen on the 2H-1-benzopyran-6-ol nucleus. As in GAMMA-TOCOPHEROL, it also has three methyl groups on the 6-chromanol nucleus but at different sites.