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“ Melatonin treatment increased total glutathione content and lowered the oxidized/reduced glutathione ratio , indicating a better redox status of the muscle.”
“ Melatonin treatment decreased GSSG activity, thus elevating GSH/GSSG ratio, and also increased SOD and CAT activity without reaching statistical significance in the lesioned animals.”
“In addition, melatonin enhanced the ratio of reduced to oxidized glutathione GSH/GSSG in sleep-deprived rats (P < 0.05) without affecting thiobarbituric acid reactive substance (TBARS) levels (P > 0.05).”
“ Melatonin counteracted the increased lipoperoxidation and nitric oxide, prevented decreased glutathione peroxidase and reductase activity, reduced the glutathione disulfide/glutathione (GSSG/GSH) ratio, and maintained the GSH pool.”
“Using isolated mitochondria, in a similar manner as cyclosporin A, melatonin (10−8–10−6 m) desensitized the PTP to Ca2+ and prevented t‐BHP‐induced mitochondrial swelling, pyridine nucleotide and glutathione oxidation.”
“The increase in the muscle concentration of thiobarbituric acid reactive substances and in the oxidized/reduced glutathione ratio induced by exercise was partially prevented by melatonin.”