title: The influence of recombinant DNA-derived human and murine gamma interferons on mouse hepatic drug metabolism.
abstract: Human gamma interferon given for up to 5 days by subcutaneous infusion or intraperitoneal injection did not significantly alter mouse hepatic microsomal oxidative drug-metabolizing enzyme activities. In contrast, murine gamma interferon and human alpha interferon given for 5 days at the same dose (10(7) units/kg) caused 25 and 50% decreases, respectively, in hepatic microsomal cytochrome P-450 concentrations. The human alpha interferon-induced decline in cytochrome P-450 was accompanied by a significant drop in p-nitroanisole demethylase activity and significant elevations in serum alanine aminotransferase and cytosolic glutathione S-transferase activities. An elevation in glutathione-S-transferase was the only significant change found following human gamma interferon administration. Microsomal UDP-glucuronosyltransferase activity was unaffected by any interferon.
mesh_terms: D000818:Animals; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D007371:Interferon-gamma / Q000494:pharmacology*; D008099:Liver / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D051379:Mice; D008862:Microsomes, Liver / Q000187:drug effects / Q000378:metabolism; D009929:Organ Size / Q000187:drug effects; D004364:Pharmaceutical Preparations / Q000378:metabolism*; D011994:Recombinant Proteins / Q000494:pharmacology; D013045:Species Specificity; D013997:Time Factors
chemical_list: D004364:Pharmaceutical Preparations; D011994:Recombinant Proteins; D007371:Interferon-gamma; D003577:Cytochrome P-450 Enzyme System