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  • Title: A randomized trial of a 6-week course of celecoxib on proteinuria in diabetic kidney disease.
    Author: Sinsakul M, Sika M, Rodby R, Middleton J, Shyr Y, Chen H, Han E, Lehrich R, Clyne S, Schulman G, Harris R, Lewis J.
    Journal: Am J Kidney Dis; 2007 Dec; 50(6):946-51. PubMed ID: 18037095.
    Abstract:
    BACKGROUND: Preclinical data suggest that cyclooxygenase 2 inhibitors decrease proteinuria and preserve glomerular structure in animal models of diabetic nephropathy. The objective of this study is to compare the efficacy and safety of celecoxib with placebo for decreasing proteinuria in patients with diabetic nephropathy. STUDY DESIGN: Placebo-controlled double-blinded crossover design. SETTING & PARTICIPANTS: 24 patients with type 1 or 2 diabetes mellitus, proteinuria with protein of 500 mg/d or greater, and serum creatinine level of 3.0 mg/dL or less. INTERVENTION: Patients were randomly assigned to: (1) 6 weeks of celecoxib followed by a 3-week washout period, followed by 6 weeks of placebo followed by another 3-week washout; or (2) 6 weeks of placebo followed by a 3-week washout, followed by 6 weeks of celecoxib followed by another 3-week washout period. All patients were administered quinapril, 20 to 40 mg/d, or irbesartan, 150 to 300 mg/d. All patients were administered aspirin, 81 mg/d. OUTCOMES & MEASUREMENTS: Proteinuria was assessed by means of protein-creatinine ratio. Data were analyzed using the mixed-effect statistical model. RESULTS: There was no significant difference in urinary proteinuria after 6 weeks of treatment with placebo or celecoxib (proteinuria ratio, celecoxib versus placebo, 1.041; 95% confidence interval, 0.846 to 1.282). Celecoxib had no significant effect on potassium or estimated glomerular filtration rate. Frequencies of adverse events were similar between the placebo and celecoxib treatments. LIMITATIONS: This pilot study was not designed to evaluate the safety or long-term clinical effects of celecoxib. CONCLUSIONS: Celecoxib, 200 mg/d, for 6 weeks did not alter proteinuria. Few adverse events were noted in this high-risk population.
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