Release of glutathione from erythrocytes and other markers of oxidative stress in carbon monoxide poisoning.

Thom, Stephen R., Melissa Kang, Donald Fisher, and Harry Ischiropoulos. Release of glutathione from erythrocytes and other markers of oxidative stress in carbon monoxide poisoning.J. Appl. Physiol. 82(5): 1424–1432, 1997.—Rats exposed to CO in a manner known to cause oxidative stress in brain exhibited a twofold increase in plasma levels of oxidized proteins, thiobarbituric acid-reactive substances (TBARS), oxidized glutathione (GSSG), and reduced glutathione (GSH). Changes were neither directly related to hypoxic stress from carboxyhemoglobin nor significantly influenced by circulating platelets or neutrophils. Treatment with the nitric oxide synthase inhibitorN ω-nitro-l-arginine methyl ester inhibited elevations in GSH and GSSG but not changes in oxidized proteins or TBARS, suggesting that two oxidative mechanisms may be operating in this model and that GSH and GSSG elevations involved nitric oxide-derived oxidants. Elevations of blood GSH and GSSG occurred at different anatomic sites, indicating that ...