Every time you exercise your body generates oxidative stress as a natural byproduct of muscle contraction and energy production. At moderate levels that is a healthy signal. But when exercise intensity exceeds Figure 4. Intracellular GSH content in A549 cells after 1 day treatment. Glutathione measurement in A549 cells unexposed (control) and exposed to increasing concentrations (10 100 g ml) of Cd SiNPs, CdCl2, SiNPs after The Influence of Intracellular Glutathione Levels on the Induction of Nrf2 Mediated Gene Expression by Dicarbonyl Precursors of Advanced Glycation End Products Glutathione an overview ScienceDirect Topics