Glutathione 600mg
$83.99
Glutathione is a tripeptide that acts as an antioxidant in plants, animals, fungi, and some bacteria and archaea. It is capable of preventing damage to important cellular components caused by sources such as reactive oxygen species, free radicals, peroxides, lipid peroxides, and heavy metals. Glutathione biosynthesis involves two ATP-dependent steps: first, γ-glutamylcysteine is synthesized from L-glutamate and cysteine. Second, glycine is added to the C-terminal of γ-glutamylcysteine. This condensation is catalyzed by glutathione synthetase. Glutathione is the most abundant thiol in animal cells, ranging from 0.5 to 10 mmol/L. It is present in the cytosol and the organelles.
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Glutathione 600mg Properties
- Chemical Formula: C10H17N3O6S
- Molecular Mass: 307.32/mol
- Synonyms: Glycine; L-γ-glutamyl-L-cysteiny; l-Glutathione; Glycine, N-(N-L-γ-glutamyl-L-cysteinyl)-
- CAS Number: 70-18-8
- PubChem: 124886
- Total Amount of the Active Ingredient: 600mg (1 vial)
- Shelf Life: 36 months
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Peer-Reviewed Studies
The changing faces of glutathione, a cellular protagonist
Abstract
Glutathione (GSH) has been described for a long time just as a defensive reagent against the action of toxic xenobiotics (drugs, pollutants, carcinogens). As a prototype antioxidant, it has been involved in cell protection from the noxious effect of excess oxidant stress, both directly and as a cofactor of glutathione peroxidases. In addition, it has long been known that GSH is capable of forming disulfide bonds with cysteine residues of proteins, and the relevance of this mechanism (“S-glutathionylation”) in regulation of protein function is currently receiving confirmation in a series of research lines. Rather paradoxically, however, recent studies have also highlighted the ability of GSH—and notably of its catabolites—to promote oxidative processes, by participating in metal ion-mediated reactions eventually leading to formation of reactive oxygen species and free radicals. A crucial role in these phenomena is played by membrane bound γ-glutamyltransferase activity. The significance of GSH as a major factor in regulation of cell life, proliferation, and death, should be regarded as the integrated result of all these roles it can play.
Abstract
Background/objectives: Glutathione (GSH) is the most abundant endogenous antioxidant and a critical regulator of oxidative stress. Maintenance of optimal tissues for GSH levels may be an important strategy for the prevention of oxidative stress-related diseases. We investigated if oral administration of liposomal GSH is effective at enhancing GSH levels in vivo.
Subjects/methods: A 1-month pilot clinical study of oral liposomal GSH administration at two doses (500 and 1000 mg of GSH per day) was conducted in healthy adults. GSH levels in whole blood, erythrocytes, plasma and peripheral blood mononuclear cells (PBMCs) were assessed in 12 subjects at the baseline and after 1, 2 and 4 weeks of GSH administration.
Results: GSH levels were elevated after 1 week with maximum increases of 40% in whole blood, 25% in erythrocytes, 28% in plasma and 100% in PBMCs occurring after 2 weeks (P<0.05). GSH increases were accompanied by reductions in oxidative stress biomarkers, including decreases of 35% in plasma 8-isoprostane and 20% in oxidized:reduced GSH ratios (P<0.05). Enhancements in immune function markers were observed with liposomal GSH administration including Natural killer (NK) cell cytotoxicity, which was elevated by up to 400% by 2 weeks (P<0.05), and lymphocyte proliferation, which was elevated by up to 60% after 2 weeks (P<0.05). Overall, there were no differences observed between dose groups, but statistical power was limited due to the small sample size in this study.
Conclusions: Collectively, these preliminary findings support the effectiveness of daily liposomal GSH administration at elevating stores of GSH and impacting the immune function and levels of oxidative stress.
Randomized controlled trial of oral glutathione supplementation on body stores of glutathione
Abstract
Purpose: Glutathione (GSH), the most abundant endogenous antioxidant, is a critical regulator of oxidative stress and immune function. While oral GSH has been shown to be bioavailable in laboratory animal models, its efficacy in humans has not been established. Our objective was to determine the long-term effectiveness of oral GSH supplementation on body stores of GSH in healthy adults.
Methods: A 6-month randomized, double-blinded, placebo-controlled trial of oral GSH (250 or 1,000 mg/day) on GSH levels in blood, erythrocytes, plasma, lymphocytes and exfoliated buccal mucosal cells was conducted in 54 non-smoking adults. Secondary outcomes on a subset of subjects included a battery of immune markers.
Results: GSH levels in blood increased after 1, 3 and 6 months versus baseline at both doses. At 6 months, mean GSH levels increased 30-35 % in erythrocytes, plasma and lymphocytes and 260 % in buccal cells in the high-dose group (P < 0.05). GSH levels increased 17 and 29 % in blood and erythrocytes, respectively, in the low-dose group (P < 0.05). In most cases, the increases were dose and time dependent, and levels returned to baseline after a 1-month washout period. A reduction in oxidative stress in both GSH dose groups was indicated by decreases in the oxidized to reduced glutathione ratio in whole blood after 6 months. Natural killer cytotoxicity increased >twofold in the high-dose group versus placebo (P < 0.05) at 3 months.
Conclusions: These findings show, for the first time, that daily consumption of GSH supplements was effective at increasing body compartment stores of GSH.
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Additional information
| Weight | 0.5 lbs |
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| Title | Default Title |
