Novel Mechanisms for the Control of Renin Synthesis and Release
First Online: 19 January 2010 DOI:
10.1007/s11906-009-0080-z Cite this article as: Sequeira Lopez, M.L.S. & Gomez, R.A. Current Science Inc (2010) 12: 26. doi:10.1007/s11906-009-0080-z Abstract
Renin is the key regulated step in the enzymatic cascade that leads to angiotensin generation and the control of blood pressure and fluid/electrolyte homeostasis. In the adult unstressed animal, renin is synthesized and released by renal juxtaglomerular cells. However, when homeostasis is threatened, the number of cells that express and release renin increases and extends beyond the juxtaglomerular area; the result is an increase in circulating renin and the reestablishment of homeostasis. The increase in the number of renin cells, a process termed
recruitment, is achieved by dedifferentiation and re-expression of renin in cells derived from the renin lineage. The mechanisms that regulate the related processes of reacquisition of the renin phenotype, renin synthesis, and renin release are beginning to be understood. Numerous studies point to cAMP as a central common factor for the regulation of renin phenotype. In addition, we are seeing the emergence of gap junctions and microRNAs as new and promising avenues for a more complete understanding of the complex regulation of the renin cell. Keywords Juxtaglomerular cells cAMP Plasticity Cell identity MicroRNAs Homeostasis References Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance
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