Nifedipine, a calcium channel blocker, inhibits inflammatory and fibrogenic gene expressions in advanced glycation end product (AGE)-exposed fibroblasts via mineralocorticoid receptor antagonistic activity.

Abstract:

:Advanced glycation end products (AGE) are involved in tissue damage and remodeling. This study investigated whether AGE could elicit inflammatory and fibrogenic reactions in fibroblast cell line MRC-5 cells via autocrine production of aldosterone and if nifedipine could block the AGE actions through mineralocorticoid receptor (MR) antagonistic activity. AGE significantly up-regulated monocyte chemoattractant protein-1 (MCP-1), transforming growth factor-beta (TGF-beta), type III collagen and receptor for AGE (RAGE) mRNA levels in MRC-5 cells, all of which were completely blocked by nifedipine or an MR antagonist spironolactone. Aldosterone also dose-dependently increased MCP-1, TGF-beta and type III collagen mRNA levels in MRC-5 cells, which were suppressed by nifedipine, but not amlodipine, a control calcium channel blocker. Further, AGE significantly stimulated aldosterone generation in MRC-5 cells, which was partially blocked by nifedipine or spironolactone. In this study, we demonstrated for the first time that AGE could evoke inflammatory and fibrogenic reactions in MRC-5 cells via aldosterone production, which were blocked by the MR antagonistic activity of nifedipine. Our present study provides a unique beneficial aspect of nifedipine on tissue damage and remodeling; it could work as an anti-inflammatory and anti-fibrogenic agent against AGE via MR antagonistic activity.

authors

Matsui T,Takeuchi M,Yamagishi S

doi

10.1016/j.bbrc.2010.04.149

subject

Has Abstract

pub_date

2010-05-28 00:00:00

pages

566-70

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(10)00844-2

journal_volume

396

pub_type

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