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.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Matsui T,Takeuchi M,Yamagishi Sdoi
10.1016/j.bbrc.2010.04.149subject
Has Abstractpub_date
2010-05-28 00:00:00pages
566-70issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(10)00844-2journal_volume
396pub_type
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