Localization of Aquaporins in Polycystic Kidney

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Abstract

We read the letter by Dr. Olivier Devuyst regarding the origin of cyst-lining cells in the kidneys of ADPKD. Their data confirm our data, which showed that the cyst-lining cells in ADPKD kidneys are well-differentiated in the terms of water channel (AQP-2 in the apical membrane and AQP-3 in the basolateral membrane) and that about 30% of the cyst originate from collecting-duct cells, although they did not examine the immunostaining of AQP-3. In addition to our data, they showed that AQP-1 also maintains its polarized distribution. Taken together, it is unlikely that polarity loss of the tubular epithelium is essential in the ADPKD kidney and that the major role of PKD genes is induction of cell polarity. On the other hand, the origin of about one third of the cysts, which do not express either AQP-1 or AQP2, remains to be determined.

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Journal ID (publisher-id): NEF

Journal ID (nlm-ta): Nephron

Journal ID (doi): 10.1159/issn.1660-8151

Title: Nephron

Publisher: S. Karger AG

ISSN (Print): 1660-8151

ISSN (Electronic): 2235-3186

Publication date Subscription-year: 1998

Publication date (Print): January 1998

Publication date (Electronic): 19 December 1997

Volume: 78

Issue: 1

Page: 117

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Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan

Article

Publisher ID: 44894 Other ID: Nephron 1998;78:117

DOI: 10.1159/000044894

SO-VID: 54d83dab-e2f6-42a3-916f-17fae1de1019

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Localization of Aquaporins in Polycystic Kidney

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Karger: Nephrology

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