Details

Autor(en) / Beteiligte

• Elfarra, A A
• Duescher, R J
• Sausen, P J
• O'Hara, T M
• Cooley, A J

Titel

Methimazole protection of rats against gentamicin-induced nephrotoxicity

Ist Teil von

• Canadian journal of physiology and pharmacology, 1994-10, Vol.72 (10), p.1238-1244

Ort / Verlag

Canada

Erscheinungsjahr

1994

Quelle

MEDLINE

Beschreibungen/Notizen

• Methimazole was previously shown to protect rats, mice, and (or) dogs against cisplatin-, cephaloridine-, 2-bromohydro-quinone-, and S-(1,2-dichlorovinyl)-L-cysteine-induced nephrotoxicity. In this study, methimazole effects on gentamicin (GM) induced nephrotoxicity were examined. Rats given GM (40 mg/kg) twice daily for 10 days exhibited higher blood urea nitrogen (BUN) concentrations and severe necrosis of virtually all proximal tubules compared with saline-treated controls. Rats cotreated with methimazole (20 mg/kg) exhibited minimal proximal tubular necrosis and were protected against GM-induced increase in BUN concentrations, despite having higher kidney GM concentrations. Rats given GM alone for 3 days exhibited no proximal tubular necrosis and no elevation of BUN values. However, these rats exhibited an increase in nonprotein disulfide concentrations and a decrease in renal protein thiol and protein disulfide concentrations, as opposed to rats given GM and methimazole. Together the results show that methimazole was an effective antagonist of GM-induced nephrotoxicity. Methimazole did not inhibit GM renal uptake but may protect against GM-induced nephrotoxicity by acting as an antioxidant within the kidneys.