法医学杂志 ›› 2022, Vol. 38 ›› Issue (1): 110-113.DOI: 10.12116/j.issn.1004-5619.2021.410707

所属专题: 水中尸体研究专题

• 技术与应用 • 上一篇    下一篇

硅藻定量分析在溺死诊断中的应用

杜宇坤1,2(), 张天叶3, 刘景建4, 刘超1, 康晓东1, 郑冬云1, 石河1, 徐曲毅1, 马开军3(), 赵建1()   

  1. 1.广州市刑事科学技术研究所 法医病理学公安部重点实验室,广东 广州 510442
    2.南方医科大学法医学院,广东 广州 510515
    3.上海市公安局物证鉴定中心 法医物证学现场应用技术公安部重点实验室 上海市现场物证重点实验室,上海 200083
    4.昆明医科大学法医学院,云南 昆明 650500
  • 收稿日期:2021-07-13 发布日期:2022-02-25 出版日期:2022-02-28
  • 通讯作者: 马开军,赵建
  • 作者简介:赵建,男,博士,主检法医师,主要从事法医病理学检验和硅藻检验研究;E-mail:zhaojian0721@163.com
    马开军,男,主任法医师,主要从事法医病理学和法医临床学研究;E-mail:makaijun@sina.cn
    杜宇坤(1997—),男,硕士研究生,主要从事法医病理学研究;E-mail:1105658850@qq.com
  • 基金资助:
    广州市科技计划资助项目(2019030001);公安部科技强警基础工作专项资助项目(2020GABJC38)

Application of Diatoms Quantitative Analysis in the Diagnosis of Drowning

Yu-kun DU1,2(), Tian-ye ZHANG3, Jing-jian LIU4, Chao LIU1, Xiao-dong KANG1, Dong-yun ZHENG1, He SHI1, Qu-yi XU1, Kai-jun MA3(), Jian ZHAO1()   

  1. 1.Guangzhou Forensic Science Institute & Key Laboratory of Forensic Pathology, Ministry of Public Security, Guangzhou 510442, China
    2.School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China
    3.Shanghai Key Laboratory of Crime Scene Evidence, Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai 200083, China
    4.College of Forensic Medicine, Kunming Medical University, Kunming 650500, China
  • Received:2021-07-13 Online:2022-02-25 Published:2022-02-28
  • Contact: Kai-jun MA,Jian ZHAO

摘要: 目的

对水中尸体硅藻检验案例进行回顾性分析,探讨硅藻定量分析在溺死诊断中的应用价值。

方法

收集水中尸体共490例,根据死因分为溺死组和死后入水组,采用微波消解-真空抽滤-自动扫描电子显微镜法对肺、肝、肾组织及水样进行硅藻定量分析,并计算肺组织与水样硅藻含量的比值(CL/CD值)。

结果

溺死组肺、肝和肾组织同时检出的有400例(85.5%),肺、肝、肾组织和水样中硅藻含量分别为(113 235.9±317 868.1)、(26.7±75.6)、(23.3±52.2)和(12 113.3±21 760.0)个/10 g,硅藻种类数分别为(7.5±2.8)、(2.6±1.9)、(2.9±2.1)、(8.9±3.0)种。溺死组和死后入水组CL/CD值分别为(100.6±830.7)、(0.3±0.4)。

结论

硅藻定量分析可为溺死诊断提供支持性证据,引入CL/CD值这一参数进行分析,能更准确地作出溺死的诊断。

关键词: 法医病理学, 溺死, 硅藻检验, 定量分析, 微波消解-真空抽滤-自动扫描电子显微镜法

Abstract: Objective

To retrospectively analyze diatom test cases of corpses in water and discuss the value of quantitative analysis of diatoms in the diagnosis of drowning.

Methods

A total of 490 cases of water-related death were collected. They were divided into drowning group and postmortem immersion group according to the cause of death. Diatoms in lung, liver, kidney tissue and water sample were analyzed quantitatively by microwave digestion-vacuum filtration-automated scanning electron microscopy (MD-VF-Auto SEM) method. The ratios of content of diatoms in lung tissue and water sample (CL/CD) were calculated.

Results

The results of diatom test for three organs (lung, liver and kidney) were all positive in 400 cases (85.5%); the content of diatom in lung, liver, kidney tissues, and water samples of drowning group were (113 235.9±317 868.1), (26.7±75.6), (23.3±52.2) and (12 113.3±21 760.0) cells/10 g, respectively; the species of diatom were (7.5±2.8), (2.6±1.9), (2.9±2.1) and (8.9±3.0) types, respectively; the CL/CD of drowning group and postmortem immersion group were (100.6±830.7) and (0.3±0.4), respectively.

Conclusion

Quantitative analysis of diatoms can provide supportive evidence for the diagnosis of drowning, and the parameter CL/CD can be introduced into the analysis to make a more accurate diagnosis of drowning.

Key words: forensic pathology, drowning, diatom test, quantitative analysis, microwave digestion-vacuum filtration-automated scanning electron microscopy method

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