Abstract
Membrane damage is one of the important consequences of chromium (Cr), an environmental toxicant, induced cytotoxicity. Reduced glutathione (GSH), a membrane protectant may be used to reduce the Cr-induced membrane damage. In the present study, the impact of Cr in presence and absence of GSH was studied on plasma membrane of the liver and kidneys in male Wistar rats. Significant increases in membrane cholesterol levels as well as significant decreases in membrane phospholipid levels in Cr exposed (0.8 mg per 100 g body weight, i.p., for 28 days) animals suggest structural alterations in both the liver and kidney plasma membranes. Alkaline phosphatase (ALP), total ATPase, and Na+–K+–ATPase activities of plasma membrane were significantly decreased in both the liver and kidneys after Cr treatment. This treatment also produced significant weight loss and increased Cr content in the liver and kidneys. However, GSH (8 mg per 100g body weight, i.p., daily at an interval of 6 h after injection of Cr for a period of 28 days) supplementation restored alterations induced by Cr in plasma membrane of both the liver and kidneys but was not able to eliminate the deposited Cr from the liver and kidney tissues.
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