Lipid peroxidation and antioxidant enzyme activity in aspirin-treated rats.
1. Malondialdehyde formation and antioxidant enzyme activity after oral or intraperitoneal treatment of rats with various doses of aspirin was studied. 2. Aspirin, orally, had no effect on spontaneous, Fe(II)- or Fe(II)/ascorbate-induced malondialdehyde formation in liver homogenates; orally, ascorbate-induced malondialdehyde production was inhibited but only after 5-day treatment with 500 mg/kg aspirin; after intraperitoneal injection, the drug inhibited ascorbate- and Fe(II)/ascorbate-induced production of malondialdehyde. 3. Aspirin had no effect on malondialdehyde formation in erythrocytes, irrespective of the dose and route of drug administration. 4. Aspirin increased glutathione peroxidase activity in liver after 5-day treatment with an oral dose of 500 mg/kg and decreased enzyme activity in both liver and erythrocytes, 24 hr after a single injection of the same dose. 5. Aspirin, in vivo slightly affected lipid peroxidation and antioxidant enzyme activity.
Kirkova
M
M
Institute of Physiology, Bulgarian Academy of Sciences, Sofia.
Ivancheva
E
E
Russanov
E
E
D000284:Administration, Oral; D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D001241:Aspirin / Q000008:administration & dosage / Q000494:pharmacology*; D004912:Erythrocytes / Q000187:drug effects / Q000201:enzymology; D005979:Glutathione Peroxidase / Q000378:metabolism; D066298:In Vitro Techniques; D007274:Injections, Intraperitoneal; D015227:Lipid Peroxidation / Q000187:drug effects*; D008099:Liver / Q000187:drug effects / Q000201:enzymology; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar
D000975:Antioxidants; D008315:Malondialdehyde; D005979:Glutathione Peroxidase; D001241:Aspirin