电击伤组织的超微结构观察  

Ultrastructure changes of electrical injury in rats

作　　者：秦志强[1] 龚毓昌[1] 黄晓华[1] 

机构地区：[1]司法部司法鉴定科学技术研究所,上海200063

出　　处：《法医学杂志》2001年第3期142-144,共3页Journal of Forensic Medicine

摘　　要：目的 观察电流传导路径上器官、组织的超微结构变化。 方法 对 SD大鼠进行实验性低电压电击。结果 触电部位皮肤的上皮细胞胞浆内基质凝固、膜系统断碎；骨骼肌肌小节出现异常收缩带；心肌的变化也较明显，可见局灶性溶解坏死并出现异常收缩带；电流传导路径上外周血管、神经的改变以血管明显，血管内皮细胞胞浆中出现空泡，中膜平滑肌可见溶解坏死，神经纤维仅见部分髓鞘松解。 结论 电击伤组织的超微结构变化可作为诊断电击死组织学变化的补充，为解决无明显皮肤电损伤的电击死案件提供形态学指标。同时也探讨了电击伤超微结构变化的形成机制。Objective To observe ultrastructure changes of electrical injury in rats. Methods An experimental model of rats suffered from the low voltage were designed. Ultrastructure changes of electrical injured tissues were observed under transmission electron microscope. Results (1)Plasm of epithelium was concreted in the affected areas and inner membrane system was broken. (2)Hypercontraction bands were observed in skeleton muscles. (3) There was dissolved necrosis and hypercontraction bands in the myocardieum. (4)Vacuoles were found in plasm of endothelium of blood vessels on electrical current path, and myelin sheath of nerve fiber were loosed. Conclusion The above mentioned ultrastructure changes could be used as assistant diagnositic index of electrocution. The mechanism of the changes were discussed.

关 键 词：电击伤 超微结构 法医鉴定 

分 类 号：D919.4[医药卫生—法医学]