法医学杂志 ›› 2014, Vol. 30 ›› Issue (4): 253-256.DOI: 10.3969/j.issn.1004-5619.2014.04.004

• 论著 • 上一篇    下一篇

血浆中组织蛋白酶L在大鼠急性心肌缺血及缺血再灌注后的表达

张更谦1,梁  正2,严  鹏1,张晓嘉1   

  1. (1. 山西医科大学法医学院,山西 太原 030001; 2. 太原市公安局刑侦支队,山西 太原 030001)
  • 发布日期:2014-08-25 出版日期:2014-08-28
  • 作者简介:张更谦(1976—),男,河北晋州人,博士,副教授,硕士研究生导师,主要从事法医学和微循环研究;E-mail:zgengqian@163.com
  • 基金资助:

    国家自然科学基金资助项目(30900593);山西省自然科学基金资助项目(200911055-2);山西省留学归国人员科技项目(2011-172)

Cathepsin L Expression in Plasma after Acute Myocardial Ischemia and Ischemia-reperfusion in Rats

ZHANG GENG-QIAN1, LIANG ZHENG2, YAN PENG1, ZHANG XIAO-JIA1   

  1. (1. School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China; 2. Criminal Investigation detachment, Taiyuan Municipal Public Security Bureau, Taiyuan 030001, China)
  • Online:2014-08-25 Published:2014-08-28

摘要: 目的 检验大鼠心肌缺血及缺血再灌注后组织蛋白酶L在血浆中的表达,探讨其能否作为心肌缺血标记物。 方法 建立大鼠急性心肌缺血模型(心肌缺血30 min、1 h、2 h组)、缺血再灌注模型(缺血再灌注组)以及异氟烷预处理后的缺血再灌注模型(异氟烷预处理组)。同时设有正常对照组、假手术组以作对照。用ELISA法检验血浆中组织蛋白酶L的含量,同时用TTC染色测量心肌梗死面积。 结果 大鼠急性心肌缺血后,各组血浆中的组织蛋白酶L含量与正常对照组、假手术组相比,差异无统计学意义(P>0.05)。缺血再灌注组,血浆中组织蛋白酶L的表达增多到正常对照组2.37倍(P<0.05)。异氟烷预处理组血浆组织蛋白酶L和心肌梗死面积都较缺血再灌注组降低(P<0.05)。 结论 血浆中组织蛋白酶L不适合作为单纯急性心肌缺血的早期血浆标记物,异氟烷预处理可以降低缺血再灌注造成的血浆组织蛋白酶L高表达。

关键词: 法医病理学, 心肌缺血, 再灌注损伤, 组织蛋白酶L, 大鼠

Abstract: Objective To test cathepsin L as a biomarker of myocardial ischemia by examination of cathepsin L expression in plasma after myocardial ischemia and ischemia-reperfusion in rats. Methods The rat models were established and divided in acute myocardial ischemia model (myocardial ischemia 30 min, 1 h, 2 h groups), ischemia-reperfusion model (ischemia-reperfusion group), and isoflurane-pretreated ischemia-reperfusion model (isoflurane-pretreated group), respectively. Normal control group and sham-operated group were established as contrast. The contents of cathepsin L in plasma were examined by ELISA and myocardial infarction areas were measured after TTC staining. Results No statistical significant changes were found among the experimental groups compared with the normal control group and sham-operated group (P>0.05). The cathepsin L from the ischemia-reperfusion group increased to 2.37 times compared with the normal control group (P<0.05). The cathepsin L and myocardium infarction size of isoflurane-pretreated group decreased compared with the ischemia-reperfusion group (P<0.05). Conclusion The cathepsin L in plasma is not a promising biomarker of acute myocardial ischemia. Isoflurane preconditioning can reduce the cathepsin L in plasma caused by ischemia-reperfusion injury.

Key words: forensic pathology, myocardial ischemia, reperfusion injury, cathepsin L, rats

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