Human Bocavirus quantitative DNA detection in French children hospitalized for acute bronchiolitis.

Human Bocavirus quantitative DNA detection in French children hospitalized for acute bronchiolitis.
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DOI:
10.1016/j.jcv.2008.05.010
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发表时间:
2008-10
期刊:
Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology
影响因子:
--
通讯作者:
Andréoletti L
Andréoletti L
中科院分区:
其他
文献类型:
--
作者:
Jacques J;Moret H;Renois F;Lévêque N;Motte J;Andréoletti L

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人类博卡病毒(HBoV)是一种新发现的细小病毒,其作为呼吸道疾病病原体的作用尚不清楚。我们通过定量 PCR 调查了 192 名因急性细支气管炎连续住院的法国儿童的鼻咽样本中是否存在 HBoV。其他常见呼吸道病毒使用免疫荧光测定、细胞培养检测或 RT-PCR 测定进行检测。 192 名研究儿童中有 24 名(12.5%)检测到 HBoV。在 14/192 例 (7%) 中,HBoV 是唯一的分离株,在 10/192 (5%) 例中,它是混合病毒感染的一部分。 HBoV 是继呼吸道合胞病毒(45/192;23%)和鼻病毒(24/192;12%)之后检测到的第三大常见病原体。它更常见于 1-12 个月大的婴儿 (P = 0.002)。单一 HBoV 感染患者呼吸道样本中 HBoV DNA 基因组的中位水平显着高于 HBoV 呼吸道病毒混合感染患者(4 × 108 拷贝/ml 比 2 × 103 拷贝/ml,P < 0.001)。我们的数据表明,高病毒载量的 HBoV 可能是呼吸道疾病的病因,而低病毒载量的 HBoV 作为呼吸道疾病的病因或病理生理学辅助因素的确切作用仍有待确定。
Human Bocavirus (HBoV) is a newly discovered parvovirus whose role as a causative agent of respiratory disease remains unclear. We investigated the presence of HBoV by quantitative PCR in the nasopharyngeal samples of 192 French children consecutively hospitalized for acute bronchiolitis. Other common respiratory viruses were detected using immunofluorescence assays, cell culture detection, or RT-PCR assays. HBoV was detected in 24 (12.5%) of 192 study children. In 14/192 cases (7%) HBoV was the sole isolate and in 10/192 (5%) it was part of a mixed viral infection. HBoV was the third most common pathogen detected after respiratory syncytial virus (45/192; 23%) and rhinovirus (24/192; 12%). It occurred more often in infants aged 1–12 months (P = 0.002). Median levels of HBoV DNA genome in respiratory samples were significantly higher in patients with single HBoV infection than in patients with mixed respiratory viral infection with HBoV (4 × 108 copies/ml vs. 2 × 103 copies/ml, P < 0.001). Our data suggest that HBoV at a high viral load could be an etiologic agent of respiratory tract disease, whereas the exact role of HBoV at a low viral load, as etiological cause or as pathophysiological co-factor of respiratory diseases, remains to be determined.
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