免疫组织化学和分子研究用于淡水和盐水溺水之间的差异诊断
Rehab A Azouz1, Alaa F Bakr2, Marwa A Ibrahim3
1Department of Toxicology and Forensic Medicine, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
Legal medicine (Tokyo, Japan)
|November 22, 2024
概括
法医鉴定溺水是具有挑战性的. 这项研究发现,盐水溺水会比淡水溺水引起更多的死后基因表达变化,这表明氧化应激.
科学领域:
- 法医医学 法医医学
- 毒理学 毒理学 毒理学
- 分子生物学分子生物学
背景情况:
- 在法医医学中,死后认定溺水是有挑战的,因为尸体解剖的发现并不具体.
- 溺水通常是排除的诊断,需要改进的诊断方法.
研究的目的:
- 为了调查死后大脑和肺部在盐水溺水 (SWD) 和淡水溺水 (FWD) 后发生的变化.
- 为了比较SWD和FWD模型在老鼠中的组织病理学,免疫组织化学和分子差异.
主要方法:
- 使用30只老鼠建立了一个溺水模型,死后0,24小时和48小时取出器官.
- 对肺部和大脑组织进行了组织病理学,免疫组织化学和分子分析.
- 量化了Caspase-3 (Casp3),c-Jun N-终端激酶 (JNK) 和细胞外信号调节激酶 (ERK) 的表达水平.
主要成果:
- 在SWD和FWD组之间没有观察到显著的组织病理差异.
- 死亡后Casp3,JNK和ERK的表达以时间依赖的方式增加.
- 与FWD病例相比,SWD中检测到Casp3,JNK和ERK的显著更高的表达在24小时和48小时内.
结论:
- 与淡水溺水相比,盐水溺水导致Casp3,JNK和ERK的死后上调更大.
- 这些基因的高表达表明,在溺水病例中,死亡后24小时和48小时发生显著的细胞氧化应激.
- 这些分子标记物可能有助于区分溺水类型,并在法医调查中确定死亡时间.
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