Effect of alpha-tocopherol on doxorubicin-induced changes in rat heart lysosomal enzymes.
Effect of doxorubicin on heart lysosomes were studied in rats with or without the administration of alpha-tocopherol. Rats were treated with doxorubicin (2.5 mg/kg body wt, iv) once a week for 8 weeks. alpha-tocopherol (400 mg/kg body wt) was co-administered orally for 2 months. Activities of acid phosphatase, beta-D-glucuronidase, cathepsin-D and beta-D-galactosidase were decreased in heart lysosomes but increased significantly in serum. A significant increase in lysosomal lipid peroxide level was noted. alpha-tocopherol co-administration reduced the lipid peroxide level as well as maintained the above mentioned enzyme activities.
Department of Biochemistry, University of Madras, India.
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Geetha
D000818:Animals; D004317:Doxorubicin / Q000037:antagonists & inhibitors* / Q000633:toxicity; D006321:Heart / Q000187:drug effects*; D015227:Lipid Peroxidation / Q000187:drug effects; D008247:Lysosomes / Q000187:drug effects / Q000378:metabolism; D008297:Male; D009206:Myocardium / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D014810:Vitamin E / Q000494:pharmacology*
D014810:Vitamin E; D004317:Doxorubicin