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When severed nerves in animal models were placed in collagen tubes impregnated with GHK, researchers observed significantly increased nerve outgrowth, elevated production of nerve growth factor (NGF) and neurotrophins NT-3 and NT-4, accelerated regeneration of nerve fibers, and increased axon count and Schwann cell proliferation compared to controls
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Available evidence does not establish one glutathione form as universally superior, and recommendations should reflect individual need, formulation quality, tolerance and clinical context
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2 Methods 2.1 Participants Forty young and forty older healthy adults participated in this study (young adults (YA): mean SD age = 23.38 3.81 years, range = 1835 years, 26 females
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