Glutathione (GSH), the most abundant intracellular low molecular weight thiol, has diverse physiological roles, and altered GSH status has been implicated in a number of chronic, acute, and age-related diseases, as well as the aging process itself. Its function as an antioxidant and determinant of cellular redox potential is crucial both for protection from reactive oxygen species as well as a signaling molecule involved in cellular proliferation, cell cycle regulation, and apoptosis. It is also an important thiol buffer, maintaining sulfhydryl groups in their reduced form, an additional mechanism for cellular signaling. Glutathione has also emerged a key modulator ...
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