Heat-induced immunoreactivity of tau protein in neocortical neurons of fire fatalities

Heat-induced immunoreactivity of tau protein in neocortical neurons of fire fatalities
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火灾死亡者新皮质神经元中 tau 蛋白的热诱导免疫反应性

DOI:
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发表时间:
2003
期刊:
Zeitschrift für Rechtsmedizin
影响因子:
--
通讯作者:
H. Shojo
H. Shojo
中科院分区:
--
文献类型:
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作者:
K. Kibayashi;H. Shojo

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Tau蛋白是阿尔茨海默病(Alzheimer's disease,AD)神经元缠结的主要成分。tau蛋白的免疫组化在AD的诊断中是有用的,但在火灾死亡者中产生新皮层神经元的弥漫性染色。为了了解这种现象的原因,我们检查了13名火灾死亡者和9名与火灾无关的死亡者的颞叶新皮层。在10例脑热凝型火灾死亡者脑组织中观察到弥漫性tau蛋白免疫反应神经元。在3例无大脑热凝或与火灾无关的火灾死亡病例中未发现弥漫性染色。免疫反应性逐渐增加的功能,脑热凝的程度。这些结果表明,新皮层神经元的弥漫性tau蛋白免疫反应性是由头部长时间暴露于高热引起的死后现象。法医病理学家在诊断火灾死亡中的AD时应考虑这种现象。
Tau protein is the main component of neurofibrillary tangles of Alzheimer's disease (AD). Immunohistochemistry of tau protein is useful in the diagnosis of AD but produces diffuse staining of neocortical neurons in fire fatalities. To learn the cause of this phenomenon, we examined the temporal neocortex of 13 fire fatalities and 9 fatalities unrelated to fire. The diffuse tau immunoreactive neurons were observed in 10 fire fatalities with heat coagulation of the cerebrum. Diffuse staining was not found in the three fire fatalities without heat coagulation of the cerebrum or in fatalities unrelated to fire. The immunoreactivity progressively increased as a function of the degree of cerebral heat coagulation. These results demonstrate that diffuse tau immunoreactivity of neocortical neurons is a post-mortem phenomenon caused by prolonged exposure of the head to intense heat. Forensic pathologists should consider this phenomenon when they diagnose AD in fire fatalities.
海马神经原纤维缠结中 tau 蛋白和神经丝表位的相对丰度。
DOI: --
发表时间: 1990
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影响因子: --
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