Glutathione depleted state (GSH-depleted state)

The term "Glutathione depleted state" refers to a cellular or systemic condition characterized by reduced levels of glutathione (GSH), the major intracellular antioxidant and redox regulator[1]. Glutathione is essential for neutralizing reactive oxygen species (ROS), detoxifying harmful compounds, maintaining redox balance, and supporting cell proliferation and immune function[1]. Depletion of glutathione can result from genetic disorders (e.g., glutathione synthetase deficiency), pharmacological inhibition of synthesis, enhanced efflux, or increased consumption during oxidative stress[1][4]. In cells, glutathione depletion is closely linked to the progression of apoptosis, as it modulates the formation of the permeability transition pore, caspase activation, and ionic homeostasis, contributing to cell shrinkage and death[1]. Glutathione depletion can also impair immune cell function, reducing lymphocyte proliferation and cytokine production, which is relevant in critical illness, sepsis, and trauma[2]. While glutathione depletion itself is not a direct therapeutic target (i.e., not a protein, receptor, enzyme, or transporter), it is a condition that can be induced or exploited therapeutically—for example, in cancer therapy to sensitize cells to chemotherapy or radiation[8]. However, unintentional or excessive depletion can lead to serious adverse effects, including hemolytic anemia, metabolic acidosis, neurological symptoms, and immunodeficiency[2][4]. In summary, "Glutathione depleted state" is a pathophysiological condition rather than a molecular target. It is significant in various diseases and therapeutic contexts, and its induction or correction can have profound effects on cell survival, immune response, and disease progression[1][2][4].

Other names

Reduced glutathione-depleted stateGSH deficiencyGlutathione deficiencyGlutathione depletionGlutathione synthetase deficiency (for a specific inherited disorder)

Inhibition of glutathione synthesis (e.g., BSO), Glutathione transport modulation (e.g., MK571), Induction of oxidative stress, Sensitization to apoptosis, Activation of alternative cell death pathways (e.g., ferroptosis, autophagy)