小型兽类不同器官恙虫病东方体阳性率调查

doi:10.11853/j.issn.1003.8280.2021.04.008

中国媒介生物学及控制杂志 ›› 2021, Vol. 32 ›› Issue (4): 428-431.DOI: 10.11853/j.issn.1003.8280.2021.04.008

所属专题：媒介生物病原学监测专题

• 媒介生物病原学监测专题 • 上一篇下一篇

小型兽类不同器官恙虫病东方体阳性率调查

赵嘉欣¹, 王玉姣^1,2, 李永香^1,3, 母群征¹, 夏青^1,3, 宋秀平¹, 栗冬梅¹, 鲁亮¹, 李贵昌¹

1. 中国疾病预防控制中心传染病预防控制所媒介生物控制室, 传染病预防控制国家重点实验室, 北京 102206;
2. 佳木斯大学公共卫生学院, 黑龙江佳木斯 154007;
3. 山东第一医科大学公共卫生学院, 山东泰安 271016

收稿日期:2021-05-14 出版日期:2021-08-20 发布日期:2021-08-20
通讯作者: 李贵昌,E-mail:liguihang@icdc.cn
作者简介:赵嘉欣,女,在读硕士,主要从事鼠传疾病病原生物学研究,E-mail:zhaojiaxin0319@163.com
基金资助:
国家科技重大专项（2017ZX10303404006）

Positive rate of Orientia tsutsugamushi in different organs of small mammals

ZHAO Jia-xin¹, WANG Yu-jiao^1,2, LI Yong-xiang^1,3, MU Qun-zheng¹, XIA Qing^1,3, SONG Xiu-ping¹, LI Dong-mei¹, LU Liang¹, LI Gui-chang¹

1. State Key Laboratory of Infectious Diseases Prevention and Control, Department of Vector Biology and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China;
2. School of Public Health, Jiamusi University, Jiamusi, Heilongjiang 154007, China;
3. School of Public Health, Shandong First Medical University, Tai'an, Shandong 271016, China

Received:2021-05-14 Online:2021-08-20 Published:2021-08-20
Supported by:
Supported by the National Science and Technology Major Project of China (No.2017ZX10303404006)

摘要/Abstract

摘要： 目的探究小型兽类不同器官恙虫病东方体阳性率有无差别，为恙虫病的病原学监测提供参考依据。方法分别选取2017年10月在河南省永城市采集的105只小型兽类的肝、脾、肺、肾、耳样本和2018年9－11月在北京市平谷区采集的324只小兽的肝、脾、耳样本，提取组织DNA，采用巢式PCR扩增检测恙虫病东方体56 kDa蛋白基因核酸片段，出现特异性条带标本通过核酸序列比对确定基因分型并计算阳性率。结果永城市和平谷区小兽阳性率分别为10.48%和12.96%，二者差异无统计学意义（χ²=0.494，P=0.504）。相同地点小兽不同器官阳性率在0.98%～14.81%，经两两比较χ²检验，永城市小兽耳的阳性率高于其他4种器官，平谷区肝脏的阳性率高于脾脏，差异有统计学意义（χ²=5.818，P=0.022）。两地之间比较，永城市小兽耳的阳性率高于平谷区，差异有统计学意义（χ²=6.525，P=0.011）。平谷区小兽脾的Shimokoshi型阳性率低于肝和耳，Kawasaki型不同器官阳性率差异无统计学意义（χ²=1.560，P=0.455）。两地肝、脾检测结果合并后配对结果显示肝脏的阳性率高于脾脏。一致性检验结果无统计学意义（Kappa=0.015，P=0.744），肝脏、脾脏阳性感染一致性差。结论永城市和平谷区小兽Kawasaki型的肝、脾、肺、肾恙虫病东方体阳性率差异无统计学意义，而Shimokoshi型肝、耳高于脾。检测多种小兽脏器或多种器官混合可提高恙虫病东方体检出率，兽耳也可作为病原学检测样本。

关键词: 小型兽类, 恙虫病东方体, 器官, 阳性率

Abstract: Objective To investigate the difference in the positive rate of Orientia tsutsugamushi between different organs of small mammals, and to provide a reference for the pathogen monitoring of scrub typhus. Methods Liver, spleen, lung, kidney, and ear samples were collected from 105 small mammals collected in Yongcheng city of Henan province, China in October 2017, and liver, spleen, and ear samples were collected from 324 small mammals collected in Pinggu district of Beijing, China from September to November 2018. DNA was extracted, and nested PCR amplification was used to detect the nucleic acid fragment of the 56 kDa protein gene of O. tsutsugamushi. The specimens with specific bands were genotyped by comparison of nucleotide sequence, and the positive rate was calculated. Results The positive rate of O. tsutsugamushi in small mammals was 10.48% in Yongcheng city and 12.96% in Pinggu district, with no significant difference (χ²=0.494, P=0.504). The positive rate of O. tsutsugamushi in different organs within the same site was 0.98%-14.81%; pairwise comparison showed that the positive rate of O. tsutsugamushi in the ear of the small mammals in Yongcheng city was higher than that in the other four organs, and the positive rate of O. tsutsugamushi in the liver of the small animals in Pinggu district was significantly higher than that in the spleen (χ²=5.818, P=0.022). The comparison of the two places showed that the positive rate of O. tsutsugamushi in the ear of the small mammals in Yongcheng city was significantly higher than that in Pinggu district (χ²=6.525, P=0.011). For the small mammals in Pinggu district, the positive rate of Shimokoshi-type O. tsutsugamushi in the spleen was lower than that in liver and the ear, while there was no significant difference in the positive rate of Kawasaki-type O. tsutsugamushi between the different organs (χ²=1.560, P=0.455). The pooled analysis of the detection results of the liver and the spleen in Yongcheng city and Pinggu district showed that the positive rate of O. tsutsugamushi in the liver was higher than that in the spleen. The results of consistency test showed no significant difference (Kappa=0.015, P=0.744), with poor consistency of positive infection in the liver and the spleen. Conclusion There are no significant differences in the positive rates of Kawasaki-type O. tsutsugamushi in the liver, spleen, lung, and kidney of small mammals between Yongcheng city and Pinggu district, while the positive rate of Shimokoshi-type O. tsutsugamushi in the liver and the ear is higher than that in the spleen. Detection of O. tsutsugamushi in the organ of various small mammals or in multiple organs can improve the detection rate of O. tsutsugamushi, and rodent ears can also be used as samples for the pathogen monitoring of scrub typhus.

Key words: Small mammal, Orientia tsutsugamushi, Organ, Positive rate

中图分类号:

R376⁺.2

赵嘉欣, 王玉姣, 李永香, 母群征, 夏青, 宋秀平, 栗冬梅, 鲁亮, 李贵昌. 小型兽类不同器官恙虫病东方体阳性率调查[J]. 中国媒介生物学及控制杂志, 2021, 32(4): 428-431.

ZHAO Jia-xin, WANG Yu-jiao, LI Yong-xiang, MU Qun-zheng, XIA Qing, SONG Xiu-ping, LI Dong-mei, LU Liang, LI Gui-chang. Positive rate of Orientia tsutsugamushi in different organs of small mammals[J]. Chines Journal of Vector Biology and Control, 2021, 32(4): 428-431.

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小型兽类不同器官恙虫病东方体阳性率调查

Positive rate of Orientia tsutsugamushi in different organs of small mammals

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