Lancet:在中国,一种新型的蜱传无形体病正在感染着人类

2015-03-31 崔倩译 MedSci原创

背景 嗜吞噬细胞无形体和绵羊无形原体引起人类感染。我们调查发现在中国一种新发现的感染山羊的微粒孢子虫属,对人类有潜在的致病性。 方法我们在2014年5月1日到6月10日在黑龙江省牡丹江林业中心医院收集了在前两个月中有蜱咬史患者的血液样本,通过PCR检测这种新型的微粒孢子虫属。我们将阳性样本接种到细胞培养基中,我们通过形态学和系统发育分析对分离的病原菌进行了分类。我们用间接免疫荧光法检测血清抗体。

背景 嗜吞噬细胞无形体和绵羊无形原体引起人类感染。我们调查发现在中国一种新发现的感染山羊的微粒孢子虫属,对人类有潜在的致病性。

方法我们在2014年5月1日到6月10日在黑龙江省牡丹江林业中心医院收集了在前两个月中有蜱咬史患者的血液样本,通过PCR检测这种新型的微粒孢子虫属。我们将阳性样本接种到细胞培养基中,我们通过形态学和系统发育分析对分离的病原菌进行了分类。我们用间接免疫荧光法检测血清抗体。

发现 根据PCR和测序我们确定477例患者中有28名(6%)确诊为新型的微粒孢子虫属感染。我们从3例患者中体外分离了病原体。rrs,gltA, groEL, msp2和msp4系统发育分析显示病原体与所有已知的微粒孢子虫种属都不一样。我们暂时将它命名为“无形体卡普拉”。24例数据可用的患者中有22例(92%)有血清转化或4倍的抗体滴度。所有28例患者发生非特异性发热表现,包括发烧23例(82%),头痛14例(50%),不适13例(46%),眩晕9例(32%),肌痛4例(14%) ,发冷4例(14%)。另外,28例患者中的10例(36%)患有皮疹或焦痂,8例(29%)有淋巴结肿大,8例(29%)有胃肠道症状,3例(11%)有颈部僵硬。5例患者因严重疾病而入院。17例有可用数据的6例(35%)患者有较高的肝转氨酶浓度。

说明 “A capra”的出现是人类疾病的病因,这表明生活在或前往流行地区中国北部地区的人们应采取预防措施来减少暴漏于这种新型的蜱传病原体的风险。

原始出处

Hao Li, PhD*, Prof Yuan-Chun Zheng, MD*, Lan Ma.et.al.Human infection with a novel tick-borne Anaplasma species in China: a surveillance study.Lancet.2015

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    2015-05-11 howi
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    2015-04-02 nakerunner
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    2015-03-31 cd90

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