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J Infect Dis:成年人HEV感染或与HIV和环境性肠病呈正相关

2013-09-23 潘风雨无阻 dxy

为了探究戊型肝炎病毒(HEV)与人类免疫缺陷病毒(HIV)以及环境性肠病之间的关系,来自赞比亚热带胃肠病学和营养集团的Choolwe Jacobs等人进行了一项研究,研究结果在线发表于2013年8月6日的Journal of Infectious Diseases上。研究发现,成人的HEV感染与HIV和环境性肠病相关。研究者收集了194名儿童和106名成人的血液样本,检测其针对HEV的免疫球蛋白G

为了探究戊型肝炎病毒(HEV)与人类免疫缺陷病毒(HIV)以及环境性肠病之间的关系,来自赞比亚热带胃肠病学和营养集团的Choolwe Jacobs等人进行了一项研究,研究结果在线发表于2013年8月6日的Journal of Infectious Diseases上。研究发现,成人的HEV感染与HIV和环境性肠病相关。
研究者收集了194名儿童和106名成人的血液样本,检测其针对HEV的免疫球蛋白G和免疫球蛋白M抗体,分析了HEV数据与HIV状态的相关性,并对小肠活组织检查进行形态测定分析。【原文下载

研究结果显示,HEV血清阳性率在童年期升高,1-4岁人群中的血清阳性率为8%,10-14岁人群中的血清阳性率为36%。成年人中的HEV总阳性率为42%。其中在HIV血清阴性的成人中的流行率是28%,而在HIV血清阳性成人中的HEV阳性率达到了71%。成人的肠绒毛高度和隐窝深度数据显示,HEV血清阳性与更严重的肠病相关。
该研究结果表明,在成年人中,HEV感染与HIV感染状态和环境性肠病明显相关。
研究背景

在发展中国家,孕妇因感染戊型肝炎病毒(HEV)引起肝炎的死亡率达到了73%。虽难以得知戊型肝炎在发展中国家的发病率,但孟加拉国一研究计算得到的发病率为每年60.3‰。最近有研究发现,在免疫抑制患者中存在与HEV感染相关的慢性肝炎、持续存在的HEV RNA、肝炎病情进展和伴HEV相关肝硬化的纤维化。因高HIV流行地区与HEV流行区高度重叠,因此共感染的可能性高,这就可能导致了共病的发生。

与甲型肝炎病毒一样,HEV在发展中国家是通过粪口途径传播的,但与甲型肝炎不同的是,HEV的抗体水平随着时间而降低。部分证据显示,儿童时期的感染对成年时的再次感染没有保护作用。有研究发现,热带肠病具有明显的环境病因和显著的季节效应,并与恶劣的住房条件和携带的肠内无症状病原体有关,因此研究者将其命名为环境性肠病。

原文下载

Jacobs C, Chiluba C, Phiri C, Lisulo MM, Chomba M, Hill PC, Ijaz S, Kelly P.Seroepidemiology of Hepatitis E Virus Infection in an Urban Population in Zambia: Strong Association With HIV and Environmental Enteropathy.J Infect Dis. 2013 Aug 27.

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    2014-03-25 zutt
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    2013-09-25 yzh404
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    2013-09-25 yzh404
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