法医学杂志 ›› 2015, Vol. 31 ›› Issue (4): 266-268.DOI: 10.3969/j.issn.1004-5619.2015.04.003

• 论著 • 上一篇    下一篇

HCN4、Cx43在电击死者窦房结组织中的表达变化

陈晓峰1,梁  栋2,韩  奇2,周士锋1,郑茂金3,王超群3   

  1. (1. 邳州市公安局,江苏 徐州 221300; 2. 徐州市公安局,江苏 徐州 221000; 3. 徐州医学院,江苏 徐州 221000)
  • 发布日期:2015-08-25 出版日期:2015-08-28
  • 通讯作者: 王超群,男,硕士,副教授,主要从事法医病理学教学、科研、检案工作;E-mail:185542017@qq.com
  • 作者简介:陈晓峰(1967—),男,江苏邳州人,副主任法医师,主要从事法医病理学鉴定及研究;E-mail:80526889@qq.com

Changes of HCN4, Cx43 Expression in the Sinoatrial Node of Electric Shock Death

CHEN XIAO-FENG1, LIANG DONG2, HAN QI2, ZHOU SHI-FENG1, ZHENG MAO-JIN3, WANG CHAO-QUN3   

  1. (1. Pizhou Public Security Bureau, Xuzhou 221300, China; 2. Xuzhou Public Security Bureau, Xuzhou 221000, China; 3. Xuzhou Medical College, Xuzhou 221000, China)
  • Online:2015-08-25 Published:2015-08-28

摘要: 目的 研究电击死者心脏窦房结组织中超极化激活环核苷酸门控阳离子通道4(hyperpolarization-activated cyclic nucleotide-gated cation channel 4,HCN4)及连接蛋白43(connexin43,Cx43)表达的变化。 方法 选择2010—2013年徐州医学院病理学教研室尸体解剖中有明确电流斑的电击死者34例作为电击死组,并设交通事故颅脑损伤死者20例作为对照组。应用免疫组织化学法检测HCN4和Cx43在心脏窦房结组织中的表达。 结果 HCN4阳性细胞表达于窦房结细胞膜及细胞质中,Cx43阳性细胞表达于窦房结T细胞及心肌细胞的细胞膜及细胞质中。电击死组HCN4的表达高于对照组(P<0.05),Cx43的表达低于对照组(P<0.05)。 结论 电击死者窦房结组织中HCN4和Cx43表达的变化,说明电击死可能与心脏电生理的改变及冲动传导改变有关。

关键词: 法医病理学, 电击伤, 窦房结, 超极化激活环核苷酸门控阳离子通道4, 连接蛋白43

Abstract: Objective To investigate the expression of hyperpolarization-activated cyclic nucleotide-gated cation channel 4 (HCN4) and connexin43 (Cx43) in the sinoatrial node of electric shock death. Methods As experimental group, 34 cases of electric shock death who had definite current mark evidence were selected from pathology department of Xuzhou Medical College from 2010 to 2013. As the control group, 20 cases of fatal severe craniocerebral injury in traffic accidents were chosen. The expressions of HCN4 and Cx43 in the sinoatrial node were observed by immunohistochemical technology. Results HCN4 positive cells expressed in the cell membrane and cytoplasm of the sinoatrial node. Cx43 positive cells expressed in the cell membrane and cytoplasm of T cells and myocardial cells. The expression of HCN4 was significantly higher than that of the control group (P<0.05) and the expression of Cx43 was significantly lower than that of the control group (P<0.05). Conclusion The changes of HCN4 and Cx43 expressions in the sinoatrial node illustrate electric shock death might be related to the abnormalities of cardiac electrophysiology and conduction.

Key words: forensic pathology, electric injuries, sinoatrial node, hyperpolarization-activated cyclic nucleotide-gated cation channel 4 (HCN4), connexin43 (Cx43)

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