Mechanisms for urate secretion by the proximal tubule
Mechanisms for urate secretion by the proximal tubule
Urate enters the cell at the basolateral membrane via exchange with alpha-ketoglutarate, mediated by OAT1 and OAT3. At the apical membrane, urate is secreted via ABCC4, ABCG2, NPT1, and/or NPT4.
Courtesy of David B Mount, MD, 2012.
Updated with information from:
Johnson RJ, Bakris GL, Borghi C, et al. Hyperuricemia, acute and chronic kidney disease, hypertension, and cardiovascular disease: Report of a scientific workshop organized by the National Kidney Foundation. Am J Kidney Dis 2018; 71:851.
Mandal AK, Mount DB. The molecular physiology of uric acid homeostasis. Annu Rev Physiol 2015; 77:323.