The effect of irbersartan on the osteopontin and MCP-1 expression in lipid-induced renal injury / 中华老年医学杂志

ABSTRACT

Objective To investigate the expression of osteopontin(OPN) and monocyte chemoattractant protein-1(MCP-1) and the effect of Irbersartan on them in diet-hypercholesterolemia rats. Methods Wistar rats were divided into three groups normal control rats(C), cholesterol fed rats(H) and cholesterol fed rats treated with Irbesartan(50 mg ? kg -1 ? d -1 ). Twelve weeks later, we measured the 24 hours total urine protein, creatinine clearance and total serum cholesterol, LDL- cholesterol, HDL- cholesterol and triglycerides. Kidney pathology was observed. Immunohistochemistry was used to analyse the expression of OPN, MCP-1, ED1 +and their relationship. Results (1) Total serum cholesterol, LDL-cholesterol level and 24 h total urine protein in H group rats were higher than that in C group rats, there was no significant difference between two groups in HDL-cholesterol and triglycerides.(2) Compared with C group rats , the expression of OPN and MCP-1 increased in cortical tubular epithelium (2.34?0.25 vs 0.49?0.11; 1.93?0.21 vs 0.49?0.11, P