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Effect of cerivastatin on proteinuria and urinary podocytes in patients with chronic glomerulonephritis
Tsukasa Nakamura1, Chifuyu Ushiyama, Kaoru Hirokawa
1Department of Medicine, Misato Junshin Hospital, Saitama, Japan.
Background:
We previously reported urinary podocytes to be a marker of glomerular injury. The aim of the present study was to determine whether cerivastatin, a newly developed, potent synthetic statin, affects proteinuria and urinary podocyte excretion in patients with chronic glomerulonephritis (CGN).
Methods:
We randomly assigned 40 normotensive hypercholesterolemic patients with CGN to receive either cerivastatin 0.15 mg/day (n=20) or placebo (n=20). Subjects comprised 24 men and 16 women, with a mean age of 40.8+/-14.4 years; 27 had IgA nephropathy and 13 had non-IgA proliferative glomerulonephritis. Treatment was continued for 6 months. Plasma total cholesterol, HDL-cholesterol, LDL-cholesterol and triglycerides, urinary protein excretion and the number of podocytes were measured before treatment and at 3 and 6 months after treatment.
Results:
After 6 months, a significant reduction in total cholesterol (P<0.001), LDL-cholesterol (P<0.001) and triglycerides (P<0.05), and a significant increase in HDL-cholesterol (P<0.001) were observed in the group treated with cerivastatin. Urinary protein excretion decreased from 1.8+/-0.6 to 0.8+/-0.4 g/day, (P<0.01) in this group, and urinary podocyte excretion decreased from 1.6+/-0.6 to 0.9+/-0.4 cells/ml (P<0.01). However, placebo showed little effect on these lipid levels, urinary protein excretion and urinary podocyte excretion. The differences between the cerivastatin group and the placebo group were significant (cholesterol, P<0.001; LDL-cholesterol, P<0.001; triglycerides, P<0.05; HDL-cholesterol, P<0.001; urinary protein, P<0.01; and urinary podocytes, P<0.01).
Conclusion:
Statins such as cerivastatin may be beneficial for restoration of injured podocytes in patients with CGN and hypercholesterolaemia.
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