Abstract
α-klotho was identified as a gene associated with premature aging-like phenotypes characterized by short lifespan. In mice, we found the molecular association of α-Klotho (α-Kl) and Na+,K +-adenosine triphosphatase (Na+,K+-ATPase) and provide evidence for an increase of abundance of Na+,K +-ATPase at the plasma membrane. Low concentrations of extracellular free calcium ([Ca2+]e) rapidly induce regulated parathyroid hormone (PTH) secretion in an α-Kl- and Na+,K +-ATPase-dependent manner. The increased Na+ gradient created by Na+,K+-ATPase activity might drive the transepithelial transport of Ca2+ in cooperation with ion channels and transporters in the choroid plexus and the kidney. Our findings reveal fundamental roles of α-Kl in the regulation of calcium metabolism.
Original language | English |
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Pages (from-to) | 1615-1618 |
Number of pages | 4 |
Journal | Science |
Volume | 316 |
Issue number | 5831 |
DOIs | |
State | Published - 2007/06/15 |
ASJC Scopus subject areas
- General