Abstract
1. The pharmacokinetics and toxicodynamics of single and multiple doses of cyclosporine were studied in the immunized rat model and compared with non-immunized rats. 2. The pharmacokinetics of cyclosporine i.v. (5 mg/kg per day) were similar in immunized and non-immunized rats after single or multiple doses. 3. The absolute bioavailabilities of single and multiple doses of cyclosporine (10 mg/kg per day) given orally were significantly decreased in immunized rats compared with non-immunized rats. 4. Oral administration of cyclosporine (10 mg/kg per day) did not alter renal function of non-immunized rats compared with untreated controls. However, inulin clearance decreased greater than four-fold in immunized rats given cyclosporine for 7 days. 5. In summary, the pharmacokinetics and toxicodynamics of cyclosporine given orally to rats are affected by the immune system.
Published Version
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