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Weight loss at a high cost: Orlistat-induced late-onset severe kidney disease.

Division of Nephrology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium. Division of Pathology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium; Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium. Division of Nephrology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium; Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium. Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium; Division of Endocrinology and Nutrition,Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium. Division of Nephrology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium; Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium. Electronic address: nathalie.demoulin@uclouvain.be.

Diabetes & metabolism. 2016;(1):62-4
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Abstract

AIM: This report describes a case of kidney failure secondary to orlistat, a lipase inhibitor commonly used in the treatment of obesity. CASE REPORT An 80-year-old man with type 2 diabetes who was being treated with orlistat developed rapidly progressive kidney failure. Low-grade albuminuria argued against diabetic nephropathy. Renal biopsy showed tubulointerstitial nephritis associated with numerous calcium oxalate crystals. Enteric hyperoxaluria was attributed to the orlistat treatment. The latter was stopped and the patient received calcium supplements. Six months after orlistat withdrawal, oxaluria was normalized and kidney function stabilized. CONCLUSION Oxalate nephropathy may result from hyperoxaluria secondary to orlistat treatment. This suggests that kidney function and oxaluria be closely monitored in patients taking orlistat.

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Publication Type : Case Reports

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