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Osteopontin and Calcium Stone Formation

Osteopontin and Calcium Stone Formation Osteopontin (OPN) is a phosphorylated protein of wide tissue distribution that is found in association with dystrophic calcification including in the organic matrix of kidney stones. It is a strong inhibitor of crystal formation and growth in vitro, but there is still debate regarding its effects upon crystal adhesion to tubular epithelial cells. In this brief review, we will outline the evidence implicating OPN in stone disease with the primary emphasis being on the interaction of OPN with calcium oxalate (CaOx), the major constituent of calcium containing stones. Finally, preliminary data is presented regarding the amounts and features of OPN present in the urine of stone formers and normal individuals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nephron Physiology Karger

Osteopontin and Calcium Stone Formation

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References (47)

Publisher
Karger
Copyright
© 2004 S. Karger AG, Basel
eISSN
1660-2137
DOI
10.1159/000080263
Publisher site
See Article on Publisher Site

Abstract

Osteopontin (OPN) is a phosphorylated protein of wide tissue distribution that is found in association with dystrophic calcification including in the organic matrix of kidney stones. It is a strong inhibitor of crystal formation and growth in vitro, but there is still debate regarding its effects upon crystal adhesion to tubular epithelial cells. In this brief review, we will outline the evidence implicating OPN in stone disease with the primary emphasis being on the interaction of OPN with calcium oxalate (CaOx), the major constituent of calcium containing stones. Finally, preliminary data is presented regarding the amounts and features of OPN present in the urine of stone formers and normal individuals.

Journal

Nephron PhysiologyKarger

Published: Oct 1, 2004

Keywords: Calcium oxalate; Crystal formation; Osteopontin; Kidney calculi; Nephrolithiasis

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