Preventive effect of cerivastatin on diabetic nephropathy through suppression of glomerular macrophage recruitment in a rat model

Diabetologia
T OtaK Kobayashi

Abstract

We investigated the effect of cerivastatin, a statin, on the development of diabetic nephropathy in spontaneously hypertensive rats (SHR) with streptozotocin-induced diabetes. Diabetic SHR were given standard chow or chow containing cerivastatin at a dose of 0.1 mg/kg or 1.0 mg/kg for 12 weeks. Effects of cerivastatin on urinary albumin excretion, mesangial expansion, glomerular macrophage infiltration, and the number of anionic sites on the glomerular basement membrane (GBM) were assessed. Cerivastatin did not affect the blood glucose concentration, blood pressure or serum cholesterol concentration in diabetic SHR. However, cerivastatin treatment caused a dose-dependent decrease of albuminuria and hyperfiltration. At 1.0 mg/kg, cerivastatin inhibited the diabetes-induced expansion of mesangial and tuft areas on histological examination of the kidneys, as well as the loss of anionic sites from the GBM evaluated with polyetyleneimine and the intraglomerular infiltration of ED1-positive macrophages evaluated by immunohistochemistry. Whole-kidney expression of mRNA for MCP-1 and TGF-beta, estimated by the real-time quantitative RT-PCR, was increased (both 2.6-fold) in untreated diabetic SHR at 12 weeks. Cerivastatin treatment (1.0...Continue Reading

Citations

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