Okayama University Medical School Acta Medica Okayama 0386-300X 47 4 1993 Elevated Lipid Peroxidation, Decreased Glutathione Levels and Changes in Glutathione-Related Enzymes in Rats Treated with Human PIacental Extract 223 227 EN Kishore Kumar Banerjee Anupam Bishayee Malay Chatterjee Article 10.18926/AMO/31554 <p>The in vivo effects of human placental extract (1-4 ml/kg) on hepatic lipid peroxidation, blood and liver glutathione (GSH) levels and several enzymes associated with the antioxidant defence mechanism; i.e., catalase, glutathione peroxidase, glutathione reductase and glutathione S-transferase, together with some blood biochemical responses were investigated in rats. At an optimal dose level (4 ml/kg), a single acute intraperitoneal administration of the extract caused a significant enhancement (49.9%; p &#60; 0.001) of lipid peroxidation with a decline in GSH level both in blood (45.1%; p &#60; 0.001) and liver (61.0%; p &#60; 0.001) in comparison to control animals. Activities of catalase, glutathione peroxidase and glutathione reductase were inhibited in a dose-responsive way by the treatment with the extract which also increased the activity of glutathione S-transferase in a dose-dependent manner. The extract was found to be hepatotoxic in terms of elevation of serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, serum lactate dehydrogenase and blood methemoglobin concentration. Results of this study suggest the adverse consequences of the administration of the extract due to its substantial ability to alter normal cellular processes.</p> No potential conflict of interest relevant to this article was reported.