人冠狀動脈粥樣硬化病灶內(nèi)CD40L水平與病灶結(jié)構(gòu)變化的關(guān)系
[Abstract]:Objective to investigate the changes of lesion structure and the expression of CD40L, matrix metalloproteinase-9 (MMP-9) protein in human coronary atherosclerosis, and to explore the role of CD40/CD40L signal in the pathogenesis and development of human coronary atherosclerosis. Methods Sixty patients with different degree of atherosclerosis were selected as experimental group and 12 cases as control group. The tissue structure of coronary artery in both groups was observed by routine HE staining and the relative indexes of lesion structure were detected by image analysis software. The expression level of CD40L,MMP-9 protein was detected by immunohistochemical staining. To analyze the relationship between the expression of CD40L,MMP-9 and the structural changes of arteriosclerosis lesions. Results the expression of CD40L was increased in the coronary artery with atherosclerosis, and the expression was mainly distributed in foam cells in the shoulder and bottom of the plaque. At the same time, there was a positive correlation between the expression of MMP-9 and CD40L, the size of lesion, especially the size of necrotic foci, but there was no significant correlation between the expression of MMP-9 and the thickness of fibrous cap. With the increase of MMP-9 level, the ratio of fiber cap thickness to maximum intimal thickness decreased. Conclusion the expression of CD40L,MMP-9 in human coronary atherosclerotic lesions is significantly increased, and CD40L may promote the development of the lesions and the expansion of necrotic foci by promoting the expression of MMP-9 and enhancing the decomposition of extracellular matrix in the lesions. The stability of atherosclerotic lesion was decreased.
【作者單位】: 貴州醫(yī)科大學病理學教研室;貴州醫(yī)科大學法醫(yī)學教研室;貴州醫(yī)科大學法醫(yī)司法鑒定中心;
【基金】:貴州省高校工程技術(shù)研究中心建設(shè)項目(黔科合KY字[2013]114)
【分類號】:R541.4
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