Abstract
Renal function following cisplatin injection in rats was assessed by measuring the half-life of plasma PSP. Changes in BUN, creatinine, plasma PSP half-life and urinary N-acetyl-beta-D-glucosaminidase (NAG) levels were determined in rats treated with 6.5 mg/kg i.v. of cisplatin. The highest values of BUN and creatinine were both observed on day 5. Half-life of plasma PSP was significantly prolonged on days 2 through 5 and reached a peak value on day 3. A significant increase in urinary NAG levels appeared on day 2 and the peak value was demonstrated on day 3. BUN, creatinine and plasma PSP half-life were also determined on days 3 and 5 following several doses of i.v. cisplatin. A dose-related increase in plasma PSP half-life was observed on day 3, while dose-related increases in BUN and creatinine levels were found on day 5. The evaluation of cisplatin-induced nephrotoxicity by the plasma PSP test was clearly superior for early detection compared with conventional renal function tests using BUN and creatinine.
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