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01-11-2010 | Review

FGF23 and the parathyroid glands

Authors: Justin Silver, Tally Naveh-Many

Published in: Pediatric Nephrology | Issue 11/2010

Abstract

Fibroblast growth factor 23 (FGF23) is a phosphatonin that is secreted by osteocytes and osteoblasts in response to hyperphosphatemia and 1,25-dihydroxyvitamin D (1,25D). It acts on its receptor complex, Klotho–FGFR1c (fibroblast growth factor receptor 1 c-splicing form), in the distal convoluted tubule to repress renal phosphorus reabsorption in the proximal tubule and suppress the renal synthesis of 1,25D. Klotho–FGFR1c is also expressed in the parathyroid glands. FGF23 acts on the receptor complex in the parathyroid glands to decrease parathyroid hormone (PTH) gene expression and PTH secretion through activation of the MAPK pathway. In chronic kidney disease (CKD), both FGF23 and PTH are increased, implying resistance of the parathyroid glands to FGF23. There is a decrease in the Klotho–FGFR1c complex in the parathyroid glands in both experimental CKD and in patients with end-stage renal disease. In addition, in advanced experimental CKD, FGF23 has a decreased ability to inhibit PTH expression.

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Title: FGF23 and the parathyroid glands
Authors: Justin Silver
Tally Naveh-Many
Publication date: 01-11-2010
Publisher: Springer-Verlag
Published in: Pediatric Nephrology / Issue 11/2010
Print ISSN: 0931-041X
Electronic ISSN: 1432-198X
DOI: https://doi.org/10.1007/s00467-010-1565-3

Keynote webinar | Spotlight on medication adherence

Springer Medicine

FGF23 and the parathyroid glands

Abstract

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

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