PPARγ Agonist-Induced Fluid Retention Depends on αENaC Expression in Connecting Tubules
Author(s) -
Yiling Fu,
Maria Gerasimova,
Falk Batz,
Alexander Kuczkowski,
Yasaman Alam,
Paul W. Sanders,
Caroline Ronzaud,
Edith Hümmler,
Volker Vallon
Publication year - 2014
Publication title -
the nephron journals/nephron journals
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 72
eISSN - 2235-3186
pISSN - 1660-8151
DOI - 10.1159/000370254
Subject(s) - epithelial sodium channel , endocrinology , medicine , aldosterone , amiloride , rosiglitazone , sodium , receptor , chemistry , organic chemistry
Thiazolidinediones (TZDs, like rosiglitazone (RGZ)) are peroxisome proliferator-activated receptor γ (PPARγ) agonists used to treat type 2 diabetes. Clinical limitations include TZD-induced fluid retention and body weight (BW) increase, which are inhibited by amiloride, an epithelial-sodium channel (ENaC) blocker. RGZ-induced fluid retention is maintained in mice with αENaC knockdown in the collecting duct (CD). Since ENaC in the connecting tubule (CNT) rather than in CD appears to be critical for normal NaCl retention, we aimed to further explore the role of ENaC in CNT in RGZ-induced fluid retention.
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