期刊
ATHEROSCLEROSIS
卷 207, 期 2, 页码 597-602出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.atherosclerosis.2009.06.003
关键词
CAD; RAGE; EN-RAGE; sRAGE; PBMCs; Gensini score
资金
- Indian Council of Medical Research (ICMR), New Delhi
Objective: Inflammation participates in atherosclerosis from its inception onwards. RAGE (receptor for advanced glycation end products) and its natural pro-inflammatory ligand, EN-RAGE (extracellular newly identified RAGE-binding protein) have been implicated in various inflammatory diseases. In present study, we determined the expression of RAGE and EN-RAGE in peripheral blood mononuclear cells (PBMCs) of subjects with pre-mature coronary artery disease (CAD) for the first time. Methods and results: The study patients were angiographically proven non-diabetic patients with premature CAD (Group I; N=100) and control group comprised of subjects with coronary risk factors and without coronary artery lesions (Group II; N=40). Semi-quantitative RT-PCR was performed to determine transcriptional expression of RAGE and EN-RAGE in PBMCs. Soluble RAGE (sRAGE) and C-reactive protein (hsCRP) levels were determined in serum of all study subjects using immunoassays. A significantly increased transcriptional expression of RAGE and EN-RAGE in PBMCs (p<0.01) of Group I patients was observed. Increased circulating hsCRP (p<0.01) levels and decreased sRAGE (p<0.01) levels were observed in Group I as compared with the Group II subjects. Severity of disease determined by Gensini score was found to be positively correlated with transcriptional expression of RAGE (r=0.530) and ENRAGE(r=0.323). EN-RAGE expression revealed a strong association with RAGE(r=0.326), hsCRP (r=0.251) and a negative association with sRAGE (r=-0.222). Conclusions: Increased expression of RAGE and EN-RAGE in non-diabetic pre-mature CAD and various associations discussed may amplify several cellular perturbations and thus significantly contribute to the pathophysiology of CAD. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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