Three feedback loops precisely regulating serum phosphate concentration
- PMID: 21841832
- DOI: 10.1038/ki.2011.146
Three feedback loops precisely regulating serum phosphate concentration
Abstract
Parathyroid hormone (PTH) and vitamin D were considered the major factors regulating phosphate homeostasis. Now, with the identification of fibroblast growth factor 23 (FGF23), a phosphaturic molecule inhibiting calcitriol and PTH, they need to be integrated into three feedback loops involving parathyroid, bone, and kidney. PTH and calcitriol are required for the appropriate synthesis of FGF23 by bone cells. PTH also regulates klotho expression in the kidney and thereby the phosphaturic action of FGF23.
Comment on
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Direct and indirect effects of parathyroid hormone on circulating levels of fibroblast growth factor 23 in vivo.Kidney Int. 2011 Sep;80(5):475-82. doi: 10.1038/ki.2011.107. Epub 2011 Apr 27. Kidney Int. 2011. PMID: 21525854
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