Receptor for advanced glycation end products (RAGE) and its inflammatory ligand EN-RAGE in non-diabetic subjects with pre-mature coronary artery disease

愤怒(情绪) 糖基化 冠状动脉疾病 医学 受体 HMGB1 糖基化终产物 疾病 炎症 内科学 免疫学 生物 神经科学
作者
Nitin Mahajan,Neelam Malik,Ajay Bahl,Veena Dhawan
出处
期刊:Atherosclerosis [Elsevier]
卷期号:207 (2): 597-602 被引量:65
标识
DOI:10.1016/j.atherosclerosis.2009.06.003
摘要

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.The study patients were angiographically proven non-diabetic patients with pre-mature 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 EN-RAGE (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).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.
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