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Título : Inhibition of TRPC6 channels ameliorates renal fibrosis and contributes to renal protection by soluble klotho
Autor : Wu, Yueh-Lin 
Xie, Jian 
An, Sung-Wan 
Oliver, Noelynn 
Barrezueta, Nestor X. 
Lin, Mei-Hsiang 
Birnbaumer, Lutz 
Huang, Chou Long 
Palabras clave : GENETICAFIBROSISRIÑONENFERMEDADES RENALESURETRA
Fecha de publicación : 2017
Editorial : Elsevier
Cita : Wu Y-L, Xie J, An S-W, et al. Inhibition of TRPC6 channels ameliorates renal fibrosis and contributes to renal protection by soluble klotho [en línea]. Kidney International. 2017;91(4):830-841. doi:10.1016/j.kint.2016.09.039 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/8753
Resumen : Abstract: Fibrosis is an exaggerated form of tissue repair that occurs with serious damage or repetitive injury and ultimately leads to organ failure due to the excessive scarring. Increased calcium ion entry through the TRPC6 channel has been associated with the pathogenesis of heart and glomerular diseases, but its role in renal interstitial fibrosis is unknown. We studied this by deletion of Trpc6 in mice and found it decreased unilateral ureteral obstruction-induced interstitial fibrosis and blunted increased mRNA expression of fibrosis-related genes in the ureteral obstructed kidney relative to that in the kidney of wild-type mice. Administration of BTP2, a pyrazol derivative known to inhibit function of several TRPC channels, also ameliorated obstruction-induced renal fibrosis and gene expression in wild-type mice. BTP2 inhibited carbachol-activated TRPC3 and TRPC6 channel activities in HEK293 cells. Ureteral obstruction caused over a 10-fold increase in mRNA expression for TRPC3 as well as TRPC6 in the kidneys of obstructed relative to the sham-operated mice. The magnitude of protection against obstruction-induced fibrosis in Trpc3 and Trpc6 double knockout mice was not different from that in Trpc6 knockout mice. Klotho, a membrane and soluble protein predominantly produced in the kidney, is known to confer protection against renal fibrosis. Administration of soluble klotho significantly reduced obstruction-induced renal fibrosis in wild-type mice, but not in Trpc6 knockout mice, indicating that klotho and TRPC6 inhibition act in the same pathway to protect against obstruction-induced renal fibrosis. Thus klotho and TRPC6 may be pharmacologic targets for treating renal fibrosis.
URI : https://repositorio.uca.edu.ar/handle/123456789/8753
ISSN : 0085-2538 (impreso)
1523-1755 (online)
Disciplina: MEDICINA
DOI: 10.1016/j.kint.2016.09.039
Derechos: Acceso Abierto
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