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Regulation of phosphate transport in proximal tubules

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Abstract

Homeostasis of inorganic phosphate (Pi) is primarily an affair of the kidneys. Reabsorption of the bulk of filtered Pi occurs along the renal proximal tubule and is initiated by apically localized Na+-dependent Pi cotransporters. Tubular Pi reabsorption and therefore renal excretion of Pi is controlled by a number of hormones, including phosphatonins, and metabolic factors. In most cases, regulation of Pi reabsorption is achieved by changing the apical abundance of Na+/Pi cotransporters. The regulatory mechanisms involve various signaling pathways and a number of proteins that interact with Na+/Pi cotransporters.

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Acknowledgments

Work in the authors’ laboratories was supported by the Swiss National Science Foundation (SNF), the European Union (EuReGene), the Hartmann Müller Foundation, the Gebert Rüf Foundation, and Transregio SFB 11-Konstanz-Zürich.

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  1. Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

    J. Biber, N. Hernando, I. Forster & H. Murer

  2. Institute of Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland

    J. Biber

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  1. J. Biber
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  2. N. Hernando
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Biber, J., Hernando, N., Forster, I. et al. Regulation of phosphate transport in proximal tubules. Pflugers Arch - Eur J Physiol 458, 39–52 (2009). https://doi.org/10.1007/s00424-008-0580-8

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