Influenza A H5N1 replication sites in humans.

Influenza A H5N1 replication sites in humans.
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DOI:
10.3201/eid1107.041313
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发表时间:
2005-07
影响因子:
11.8
通讯作者:
Auewarakul P
Auewarakul P
中科院分区:
医学2区
文献类型:
--
作者:
Uiprasertkul M;Puthavathana P;Sangsiriwut K;Pooruk P;Srisook K;Peiris M;Nicholls JM;Chokephaibulkit K;Vanprapar N;Auewarakul P

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甲型流感病毒亚型H5 N1在人类中的组织嗜性和发病机制尚未明确。在哺乳动物实验模型中,H5 N1流感是一种播散性疾病。然而,以前有限的人类尸检数据没有显示病毒传播到肺部以外的证据。我们调查了一例致命性H5 N1流感患者。通过逆转录-聚合酶链反应在肺、肠和脾组织中检测到病毒RNA,但阳性链病毒RNA表明病毒复制仅限于肺和肠。免疫组化检测肺细胞中的病毒抗原。肺组织可见肿瘤坏死因子-α mRNA表达。与其他哺乳动物和鸟类中记录的播散性感染相反,H5 N1病毒在人类中的复制可能限于肺和肠,并且H5 N1病毒在肺中复制的主要部位是肺细胞。
Tissue tropism and pathogenesis of influenza A virus subtype H5N1 disease in humans is not well defined. In mammalian experimental models, H5N1 influenza is a disseminated disease. However, limited previous data from human autopsies have not shown evidence of virus dissemination beyond the lung. We investigated a patient with fatal H5N1 influenza. Viral RNA was detected by reverse transcription–polymerase chain reaction in lung, intestine, and spleen tissues, but positive-stranded viral RNA indicating virus replication was confined to the lung and intestine. Viral antigen was detected in pneumocytes by immunohistochemical tests. Tumor necrosis factor-α mRNA was seen in lung tissue. In contrast to disseminated infection documented in other mammals and birds, H5N1 viral replication in humans may be restricted to the lung and intestine, and the major site of H5N1 viral replication in the lung is the pneumocyte.
DOI: 10.1126/science.1102287
发表时间: 2004-10-08
期刊: SCIENCE
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