Identification of cytotoxic, glutathione reactive moieties inducing accumulation of reactive oxygen species via glutathione depletion ScienceDirect Glutathione: The Master Antioxidant Core Med Science Did you know one single mast cell can release chemicals that affect your skin, gut, heart, brain, and immune system all at once? That's why MCAS can feel so overwhelming, the Multiomics reveals glutathione metabolism as a driver of bimodality during stem cell aging ScienceDirect Mast cells are hypersensitive immune cells that release histamine and other inflammatory mediatorsoften in response to oxidative stress, environmental toxins, and immune imbalance. Many patients with MCAS have low levels of glutathione.