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Effect of diallyl trisulfide coated stents on iNOS protein expression and NO level in canine models of coronary restenosis
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 11
- DOI:
- 10.3321/j.issn:1000-2790.2006.11.005
- Key Word:
- 二烯丙基三硫化物;血管成形术;支架;iNOS蛋白;一氧化氮
Abstract： 目的:研究二烯丙基三硫化物涂层支架对犬冠状动脉损伤后血管壁内诱导型一氧化氮合酶(iNOS)蛋白表达及NO水平的影响. 方法:进行冠状动脉左回旋支支架置入术的犬,将二烯丙基三硫化物涂层支架和对照支架分别置入左回旋支的远端和近端. 术后1,3,10和28 d分别处死动物,蛋白质印迹杂交法测定血管壁中iNOS蛋白的表达、硝酸还原酶法检测NO水平. 结果:对照支架组术后1 d血管壁中有少量iNOS蛋白表达,3 d表达增加,10 d达高峰,28 d时仍有表达,二烯丙基三硫化物涂层支架组iNOS蛋白在各时间点的表达量均高于对照支架组;对照支架组术后1 d时NO生成量低于正常组织,3 d时NO水平升高,10 d时最高,28 d时降至基线水平,二烯丙基三硫化物涂层支架组各时间点的NO水平明显高于对照支架组. 结论:二烯丙基三硫化物涂层支架可显著增加iNOS表达,并提升NO产量,提示二烯丙基三硫化物涂层支架可能是抑制内膜增生的一个重要机制.
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