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J Nephrol. 2002 Mar-Apr;15 Suppl 5:S151-60.

Use of transgenic animals to study renal acid-base transport.

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Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520-8026, USA.


Many of the transporters mediating renal acid-base homeostasis have recently been identified at the molecular level. These advances have made it possible to generate transgenic mice with deficiency or overexpression of specific transporter isoforms. Such knockout mice have served as useful experimental models to quantitate the contribution of a given transporter isoform to transtubular acid-base transport along the nephron. Studies with transgenic and knockout mice have also been used to elucidate the compensatory adaptive mechanisms in response to specific transport deficiencies. We review experiments using transgenic mice to evaluate the physiological roles in acid-base transport of NHE isoforms, vacuolar H+ pump subunits, H+, K(+)-ATPase isoforms, carbonic anhydrase, Cl(-)-base exchangers and such regulatory mediators as nitric oxide and endothelin.

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