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Murer, H; Biber, J (1997). A molecular view of proximal tubular inorganic phosphate (Pi) reabsorption and of its regulation. Pflügers Archiv: European Journal of Physiology (Pflugers Archiv), 433(4):379-389.

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In recent years, two mammalian proximal tubular brush border membrane Na/Pi cotransporters (types I and II) have been structurally identified by expression cloning techniques. Oocyte expression studies have shown that only the transport characteristics of the type II transporter correspond to the well-known properties of proximal tubular brush border membrane of Pi transport. In studies on physiological regulation by hormonal and non-hormonal factors a direct involvement and determining role of the type II transporter has been documented. Most interestingly, specific membrane retrieval/insertion phenomena participate in acute (minutes/hours) adjustments of brush border membrane Na/Pi cotransport rates; for chronic (hours/days) alterations also specific resynthesis/degradation processes participate. In pathophysiological alterations (e.g. in X-linked hypophosphataemia and in heavy metal-induced nephrotoxicity) the expression of the type II Na/Pi cotransporters is reduced and explains the observed phosphaturia.


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Additional indexing

Item Type:Journal Article, refereed
Communities & Collections:04 Faculty of Medicine > Institute of Physiology
07 Faculty of Science > Institute of Physiology
Dewey Decimal Classification:570 Life sciences; biology
Date:1 February 1997
Deposited On:11 Feb 2008 12:22
Last Modified:05 Apr 2016 12:18
Publisher DOI:10.1007/s004240050292
Related URLs:http://www.springerlink.com/content/1eq77xa1c8fjyy3a/
PubMed ID:9000416

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