title: Peritonitis induces the synthesis of 1 alpha,25-dihydroxyvitamin D3 in macrophages from CAPD patients.
abstract: Metabolism of 25-[3H]hydroxyvitamin D3 was studied in peritoneal macrophages from renal failure patients on continuous ambulatory peritoneal dialysis (CAPD). Cells from 5 out of 8 patients with a history of peritonitis produced significant amounts of a metabolite chromatographically identical to 1 alpha,25(OH)2D3; but none was produced by cells from non-infected patients. The evidence strongly suggests that peritoneal macrophages stimulated by infection can metabolise 25OHD3 to the active vitamin D3 metabolite, 1 alpha,25(OH)2D3, when maintained in short-term primary culture.
mesh_terms: D002112:Calcifediol / Q000378:metabolism; D002117:Calcitriol / Q000096:biosynthesis*; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D007676:Kidney Failure, Chronic / Q000503:physiopathology; D008262:Macrophage Activation; D008264:Macrophages / Q000378:metabolism*; D010531:Peritoneal Dialysis, Continuous Ambulatory; D010538:Peritonitis / Q000378:metabolism*
chemical_list: D002117:Calcitriol; D002112:Calcifediol