The kidney adjusts net acid excretion to match production with exquisite precision, despite little or no change in the plasma bicarbonate concentration. The acid-sensing pathway that signals the kidney to increase acid secretion involves activation of the proto-oncogene c-Src. A new study in this issue shows that proline-rich tyrosine kinase 2 (Pyk2) is responsible for acid-induced activation of c-Src and is essential for acid sensing in renal epithelial cells. The findings implicate a broader role for Pyk2 in acid-base homeostasis in bone and other tissues beyond the kidney.
Stephen L. Gluck
Title and authors | Publication | Year |
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Regulation of Transport in the Connecting Tubule and Cortical Collecting Duct
A Staruschenko |
Comprehensive Physiology | 2012 |
Transcriptional Regulation of the Pendrin Gene
J Rozenfeld, E Efrati, L Adler, O Tal, SL Carrithers, SL Alper, I Zelikovic |
Cellular Physiology and Biochemistry | 2011 |
Physiological carbon dioxide, bicarbonate, and pH sensing
M Tresguerres, J Buck, LR Levin |
Pflügers Archiv - European Journal of Physiology | 2010 |
Deletion of the pH Sensor GPR4 Decreases Renal Acid Excretion
X Sun, LV Yang, BC Tiegs, LJ Arend, DW McGraw, RB Penn, S Petrovic |
Journal of the American Society of Nephrology : JASN | 2010 |
Sensing, physiological effects and molecular response to elevated CO2levels in eukaryotes
K Sharabi, E Lecuona, IT Helenius, GJ Beitel, JI Sznajder, Y Gruenbaum |
Journal of Cellular and Molecular Medicine | 2009 |
Clinical review: Renal tubular acidosis--a physicochemical approach
T Ring, S Frische, S Nielsen |
Critical Care | 2005 |