上海浦东机场发生爆燃事件,伤者需警惕“隐形脑损伤”

2016-06-14 岚逸筠篁 医学界

对伤员来说,爆炸可能对他们脑组织造成了损害——这是一种可能是影像学检查不出来的损害,但的确会对伤员产生不良的影响。

对伤员来说,爆炸可能对他们脑组织造成了损害——这是一种可能是影像学检查不出来的损害,但的确会对伤员产生不良的影响。

昨天下午,在上海浦东机场发生一起爆燃事件,一名男子从随身携带的背包中拿出自制的爆炸物丢至T2航站楼C岛一值机柜台前,引发小范围爆燃。男子随后从背包取出匕首划割自己颈部后倒地。事件造成3名无辜旅客轻伤,肇事者和伤员均已送医治疗。目前警方仍在进一步调查。

幸好那个伪劣的“莫洛托夫鸡尾酒”(土制燃烧瓶别称)杀伤力较小,未能造成重大人员伤亡。不过,或许,对伤员来说,爆炸、对他们脑组织造成了损害——这些一种可能是影像学检查不出来的损害,但会对伤员产生不良的影响——这是来自于《柳叶刀·神经病学》刊登的最新研究成果。

看不到、但确实存在的脑损伤

因为爆炸而导致的创伤性脑损伤在临床上很常见,然而一些从爆炸中幸存的士兵的症状却让人困惑。他们经过一系列检查并未发现任何异常,但却出现了如失眠、头痛、抑郁、记忆错乱等症状,而且。这些症状的确提示大脑中有结构性损害,然而却无法用影像学检查发现或解释。

为了探明这些“隐形的脑损伤”及其发病机制,美国一个研究团队对8名在爆炸中幸存但却死于其他原因的退役士兵大脑进行检测,并且与那些创伤性脑外伤、药物滥用、慢性创伤性脑病的死者大脑进行比较。结果在其中5名退役士兵的大脑中发现了独特的神经损伤!

在与记忆、认知功能、睡眠等大脑相关区域中出现了明显的永久疤痕组织——星形胶质细胞增生,而那些已知与创伤后应激反应(PTSD)有关的大脑区域中也发现了这种疤痕组织,而这些损伤在脑脊液流经处、灰质白质分界处以及血管周围的脑组织中发现。


通过免疫组化分析发现在大脑不同密度组织分界区域中发现神经胶质源纤维酸性蛋白(GFAP)——成熟星形胶质细胞的特征性蛋白的强烈表达,提示存在脑组织损伤

这也就意味着爆炸产生的强烈压力与不同密度脑组织分界区域出现了复杂的相互作用,从而导致损伤的发生。

因果关系仍有待验证,但需要重视

由于这样的组织学现象主要出现在经受爆炸后6个月的幸存者以及在爆炸后4~60天内死亡的士兵大脑中,因此这类无法通过常规检查发现的脑损伤与爆炸可能有关。

“虽然尚未有足够的证据证明爆炸和这些疤痕组织有直接联系,但是这类脑组织损伤并未在对照组中发现,因此爆炸是罪魁祸首的可能性非常大。”研究论文第一作者Deniel Perl博士说道,但他也表示研究存在“未能获得死者所有的头部创伤史从而排除陈旧性损伤,以及获得爆炸威力、死者离开爆炸的距离、经历的爆炸次数等与受伤严重程度相关的数据”这一不足。

有学者表示,存在这类脑损伤的患者由于爆炸冲击波所导致的渐进性失能可能未能活到正常人群平均期望寿命,失去为社会服务和生活时间,必将成为爆炸冲击波事件受害者以及社会需要关注的问题。

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    2016-10-12 ylzr123

    好文,值得推荐。

    0

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    2016-09-02 doctorJiangchao

    还真学习了

    0

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    2016-09-02 doctorJiangchao

    脑外科的故事

    0

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