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Full-Text Articles in Medicine and Health Sciences

Disruption Of The Beta Subunit Of The Epithelial Na+ Channel In Mice: Hyperkalemia And Neonatal Death Associated With A Pseudohypoaldosteronism Phenotype., F. Mcdonald, Baoli Yang, R. Hrstka, H. Drummond, D. Tarr, P. Mccray, J. Stokes, M. Welsh, R. Williamson Jul 2013

Disruption Of The Beta Subunit Of The Epithelial Na+ Channel In Mice: Hyperkalemia And Neonatal Death Associated With A Pseudohypoaldosteronism Phenotype., F. Mcdonald, Baoli Yang, R. Hrstka, H. Drummond, D. Tarr, P. Mccray, J. Stokes, M. Welsh, R. Williamson

Baoli Yang

The epithelial Na+ channel (ENaC) is composed of three homologous subunits: alpha, beta and gamma. We used gene targeting to disrupt the beta subunit gene of ENaC in mice. The betaENaC-deficient mice showed normal prenatal development but died within 2 days after birth, most likely of hyperkalemia. In the -/- mice, we found an increased urine Na+ concentration despite hyponatremia and a decreased urine K+ concentration despite hyperkalemia. Moreover, serum aldosterone levels were increased. In contrast to alphaENaC-deficient mice, which die because of defective lung liquid clearance, neonatal betaENaC deficient mice did not die of respiratory failure and showed only …


What Evidence Is Available On Aldosterone Antagonists For Use In Heart Failure With Preserved Ejection Fraction?, Vivian Loo, Laura Tsu Jan 2013

What Evidence Is Available On Aldosterone Antagonists For Use In Heart Failure With Preserved Ejection Fraction?, Vivian Loo, Laura Tsu

Pharmacy Faculty Articles and Research

This drug information question and answer sheet discusses the use of aldosterone antagonists for use in heart failure with preserved ejection fraction.