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      Localization of Aquaporins in Polycystic Kidney

      Nephron

      S. Karger AG

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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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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1998
          January 1998
          19 December 1997
          : 78
          : 1
          : 117
          Affiliations
          Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
          Article
          44894 Nephron 1998;78:117
          10.1159/000044894
          © 1998 S. Karger AG, Basel

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          Page count
          Pages: 1
          Product
          Self URI (application/pdf): https://www.karger.com/Article/Pdf/44894
          Categories
          Letter to the Editor

          Cardiovascular Medicine, Nephrology

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