法医学杂志 ›› 2013, Vol. 29 ›› Issue (2): 86-90.DOI: 10.3969/j.issn.1004-5619.2013.02.002

• 论著 • 上一篇    下一篇

急性心功能障碍大鼠心肌中BNP的表达

高卫民1,2,曹志鹏1,米  丽1,杜中波1,前田 均3,朱宝利1,3   

  1. (1. 中国医科大学法医学院,辽宁 沈阳 110001; 2. 太仓市公安局,江苏 太仓 215400; 3. 日本大阪市立大学医学部法医学教室,大阪 545-8585 日本)
  • 发布日期:2013-04-25 出版日期:2013-04-28
  • 通讯作者: 朱宝利,男,教授,博士研究生导师,日本大阪市立大学医学部客座教授,主要从事法医病理学、法医病理生理学的教学、研究及鉴定;E-mail:zhu1127@hotmail.com
  • 作者简介:高卫民(1985—),男,山西平遥人,硕士研究生,主要从事法医病理学、法医病理生理学研究;E-mail:shangyigaoweimin@126.com
  • 基金资助:

    国家自然科学基金资助项目(81273343)

Expression of BNP in Rat Myocardial Tissue after Acute Cardiac Dysfunction

GAO WEI-MIN1,2, CAO ZHI-PENG1, MI LI1, DU ZHONG-BO1, HITOSHI MAEDA3, ZHU BAO-LI1,3   

  1. (1. School of Forensic Medicine, China Medical University, Shenyang 110001, China; 2. Taicang Public Security Bureau, Taicang 215400, China; 3. Department of Legal Medicine, Osaka City University Medical School, Osaka 545-8585, Japan)
  • Online:2013-04-25 Published:2013-04-28

摘要: 目的 研究大鼠急性心功能障碍时心肌组织中脑钠肽(brain natriuretic peptide,BNP)的表达变化,探讨BNP在急性心功能障碍的法医学诊断中的应用价值。 方法 建立大鼠急性心功能障碍模型,运用免疫组织化学、Western印迹法、实时RT-PCR等技术检测心功能障碍过程中心肌组织BNP蛋白和BNP mRNA的表达变化。 结果 随心功能障碍持续时间增加,免疫阳性着色不断增强。1~2 h主要表现为弱阳性,4~6 h心肌细胞主要表现为阳性,10~12 h大鼠心肌细胞表现为强阳性。Western印迹法和实时RT-PCR结果均显示,随心功能障碍持续时间增加,BNP明显升高,而且心功能障碍1 h即能观察到BNP mRNA显著升高。 结论 检测心肌组织中BNP蛋白及BNP mRNA的表达能为法医病理学工作者客观评价心功能状态提供一种新的途径。

关键词: 法医病理学, 猝死, 心脏, 利钠肽, 脑, 大鼠

Abstract: Objective To investigate the expression of brain natriuretic peptide (BNP) in rat myocardial tissue after acute cardiac dysfunction and to explore the role of BNP in diagnosis of cardiac dysfunction in forensic practice. Methods Rat models of acute cardiac dysfunction were established. The expression of BNP protein and BNP mRNA in myocardial tissue after cardiac dysfunction were detected by immunohistochemistry, Western blotting and real-time RT-PCR. Results The extent of positive staining of BNP increased over the time course during cardiac dysfunction. The expression of BNP showed mild positive in cardiomyocytes from 1 h to 2 h. From 4 h to 6 h, the expression was moderate positive. From 10 h to 12 h, the BNP showed a strongest positive expression. The expression of BNP presented a significant raise with the increasing time of cardiac dysfunction by Western blotting and real-time RT-PCR. The expression of BNP mRNA increased significantly 1 h after cardiac dysfunction. Conclusion Investigating the expression of BNP protein and BNP mRNA in myocardial tissue may provide a new approach to evaluate the cardiac function for forensic pathologists.

Key words: forensic pathology, death, sudden, cardiac, natriuretic peptide, brain, rats

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