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J. D. Stockand is in the Department of Physiology, University of Texas Health Science Center San Antonio, San Antonio, Texas 78284-7756. D. C. Eaton is at the Center for Cell and Molecular Signaling, Department of Physiology, Emory University School of Medicine, Atlanta, Georgia 30322; R. S. Edinger and J. P. Johnson are in the Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213.
Proper endocrine regulation of Na+ reabsorption by renal principal cells is the primary means in mammals for maintaining blood pressure. Aldosterone increases Na+ reabsorption by activating luminal Na+ channels; however, the signal transduction pathway of aldosterone is not fully understood. Cellular methylation is necessary for aldosterone signaling to the luminal Na+ channel. We describe the enzymes, regulators, and effectors of aldosterone-mediated methylation relevant to Na+ reabsorption.
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