Antidotal effects of dimethyl sulphoxide against paracetamol-, bromobenzene-, and thioacetamide-induced hepatotoxicity.

Abstract

In mice the hepatotoxic effects of paracetamol (0.5-1.0 g kg-1, orally) as evidenced by increased serum enzyme activities of the aminotransferases and sorbitol dehydrogenase were dose-dependently inhibited by simultaneous treatment with dimethyl sulphoxide (DMSO 0,25-1.0 g kg-1, i.p.). DMSO was also active against bromobenzene- and thioacetamide-induced hepatotoxicity, but failed to protect mice against carbon tetrachloride-induced liver damage. Hepatic glutathione depletion in mice amounting to 94% after paracetamol (0.5 g kg-1, orally) and to 60% after bromobezene (0.25 ml kg-1, orally) was dose-dependently reduced by the simultaneous administration of DMSO(0.25--1.0 G KG-1, I.P.). This indicates less conjugation of the toxic metabolites of paracetamol and bromobenzene to liver glutathione (G-SH) in the presence of DMSO.