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J Gerontol A Biol Sci Med Sci:IL-6水平升高可导致老人谵妄的发生?

2015-07-29 sunshine 译 MedSci原创

对术后患者的研究表明,炎症因子水平的升高与患者谵妄的发生相关。谵妄是一种严重的精神错乱,往往发生在老年人术后或者身患重大疾病的时候。目前,由贝斯以色列女执事医疗中心(BIDMC)所进行的一项新的研究证实,炎症(身体遭受有害刺激时机体的一种保护性免疫反应)在谵妄的发生中起重要作用,该研究成果发表于The Journals of Gerontology, Series A: Biological Sc


对术后患者的研究表明,炎症因子水平的升高与患者谵妄的发生相关。

谵妄是一种严重的精神错乱,往往发生在老年人术后或者身患重大疾病的时候。目前,由贝斯以色列女执事医疗中心(BIDMC)所进行的一项新的研究证实,炎症(身体遭受有害刺激时机体的一种保护性免疫反应)在谵妄的发生中起重要作用,该研究成果发表于The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences

该研究发现,患有谵妄的老年人其炎症标志物白细胞介素-6(IL-6)的水平在术后两天明显升高,且确定了神志昏迷的患者其白细胞介素-2的水平也明显升高。这些发现可帮助临床医生确定极易发生谵妄的患者并辅助治疗谵妄。高达64%的住院老人发生过谵妄,而且谵妄可增加两到三倍随后发生老年痴呆的风险。

“美国每年数以百计的谵妄患者停留在综合性医院,”共同资深作者Edward Marcantonio说道,“IL-6与谵妄密切相关,IL-2与谵妄有关,表明炎症的确是引起谵妄的一个基本的机制。”
任何引起组织损伤的东西,包括感染,疾病或外科手术,都可以激活各种免疫细胞,引发炎症反应。“谵妄可能是一种炎症反应消失的状态,”Marcantonio说道。

本研究中,研究的共同作者Sarinnapha M. Vasunilashorn分析了来自SAGES的数据。在过去的五年里,该研究随访了566名70岁以上的非心脏手术患者,目的是为了找到防止老人发生谵妄的新方法并探究其长期效果。“在检查SAGES患者(曾接受过重大择期性手术)的过程中,我们比较了术后发生及未发生谵妄的患者,”Vasunilashorn解释道。手术的类型包括骨科、血管和胃肠道手术。

校正一些可能增加阿尔茨海默症发病风险的因素(包括年龄、性别、手术类型、基线认知、合并血管疾病、基因突变),作者采用一种三阶段法来检测炎症因子与谵妄之间的关联。

研究纳入272名SAGES患者,匹配过程中确定了39对谵妄和非谵妄人员,称为发现队列。然后剩余的SAGES患者中匹配了36对病例与对照人员,称为复制队列。最后他们将这两个队列结合起来以创建汇集队列,总共包含75个配对。

“结果显示,术后两天发生谵妄的患者其IL-6的水平显著升高,”Vasunilashorn说道,“神志昏迷与神志正常的患者相比,IL-6的水平相差巨大,高于正常老人上限了10倍。”

中等证据报道IL-2:汇集队列中,神志不清的患者较神志正常的患者IL-2的水平在四个点上更高。“IL-2在谵妄中的作用是一个新的发现,而且有趣的是,动物模型中发现IL-2可导致血脑屏障功能障碍。”

“尽管我们发现IL-6水平的升高与患者术后两天发生谵妄显著相关,我们并没有发现术后一个月这种升高与谵妄之间的关联具有统计学意义,”共同作者 Ngo说道,“IL-6水平升高的持续时间与谵妄严重性或谵妄持续性是否相关?这个问题尚未解决。但是,通过确定强大的IL-6信号,我们就有很好的机会来研究IL-6与谵妄之间的因果关系。”

“谵妄是住院老人最常见的并发症,”Marcantonio说道,“曾经认为谵妄是个短期、短暂的状态,现在有证据表明,谵妄及其影响可在病人离院以后持续存在。我们希望我们的病人在离院以后情况可以好转而不是恶化。理解炎症在谵妄发生中的作用,可以帮助我们确定哪些患者发生谵妄的风险最高,并可采取措施,以减小其发病的风险。还可以帮助我们设计新的干预措施,以防止或治疗谵妄。”

原始出处:

Research provides strong link between delirium and inflammation in older patients.MNT.July 28,2015

Vasunilashorn SM, Ngo L, Inouye SK, Libermann TA, Jones RN, Alsop DC, Guess J, Jastrzebski S, McElhaney JE, Kuchel GA, Marcantonio ER.Cytokines and Postoperative Delirium in Older Patients Undergoing Major Elective Surgery.J Gerontol A Biol Sci Med Sci. 2015 Jul 27.


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    2019-07-01 小微940490

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    2016-06-30 sunylz
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    2015-07-31 kzlchina
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