热带病与寄生虫学 ›› 2024, Vol. 22 ›› Issue (6): 339-345.doi: 10.20199/j.issn.1672-2302.2024.06.004

• 病媒生物防制专题 • 上一篇    下一篇

云南省西双版纳州小型兽类感染巴尔通体分子流行病学调查

罗智1,2(), 杨红梅3, 栗冬梅4, 李淼1,2, 杜超博1,5, 相蓉6, 曹占鑫1,5, 杜春红1()   

  1. 1 云南省地方病防治所,云南省自然疫源性疾病防控技术重点实验室,云南大理 671000
    2 大理大学公共卫生学院
    3 西双版纳州疾病预防控制中心
    4 中国疾病预防控制中心传染病预防控制所
    5 昆明医科大学公共卫生学院
    6 军事科学院军事医学研究院,病原微生物生物安全国家重点实验室
  • 收稿日期:2024-10-24 出版日期:2024-12-20 发布日期:2025-01-23
  • 通信作者: 杜春红,dch6890728@163.com
  • 作者简介:罗智,男,硕士在读,研究方向:自然疫源性疾病。E-mail: luo_zhi3@163.com
  • 基金资助:
    国家自然科学基金项目(U2002219、81760607)

Molecular epidemiological investigation of Bartonella infection in small mammals in Xishuangbanna Prefecture, Yunnan Province

LUO Zhi1,2(), YANG Hongmei3, LI Dongmei4, LI Miao1,2, DU Chaobo1,5, XIANG Rong6, CAO Zhanxing1,5, DU Chunhong1()   

  1. 1 Yunnan Institute for Endemic Disease Control and Prevention, Key Laboratory of Prevention and Control Technology for Natural Focus Diseases of Yunnan Province, Dali 671000, Yunnan Province, China
    2 School of Public Health, Dali University
    3 Xishuangbanna Prefecture Center for Disease Control and Prevention
    4 National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention
    5 School of Public Health, Kunming Medical University
    6 State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medicine Sciences
  • Received:2024-10-24 Online:2024-12-20 Published:2025-01-23
  • Contact: DU Chunhong,dch6890728@163.com

摘要:

目的 了解云南省西双版纳傣族自治州(简称西双版纳州)小型兽类巴尔通体感染状况,为当地巴尔通体病的防控提供科学依据。方法 2021—2023年在云南省西双版纳州勐海县、勐腊县及景洪市不同环境捕获小型兽类,经形态学鉴定后解剖取心、肝、脾、肺等脏器,提取DNA,运用PCR技术扩增巴尔通体gltA基因片段;测定PCR扩增阳性产物的序列,对获得序列进行同源性和系统进化分析。结果 调查共捕获小型兽类17种219只,其中啮齿目2科6属11种共193只,食虫目2科4属6种共26只。捕获的小型兽类中,黄胸鼠(Rattus flavipectus)最多(65.75%,144/219),其后相对较多的有滇绒鼠(Eothenomys eleusis)(6.39%,14/219)、锡金小鼠(Mus pahari)(4.57%,10/219)、长尾大麝鼩(Crocidura dracula)(4.57%,10/219)。共有29只小型兽类检出目的基因片段,巴尔通体感染率为13.24%(29/219)。感染小型兽类为黄胸鼠、滇绒鼠、锡金小鼠、卡氏小鼠(Mus caroli)、针毛鼠(Niviventer fulvescens),其感染率分别为14.58%(21/144)、7.14%(1/14)、40.00%(4/10)、22.22%(2/9)、25.00%(1/4)。经序列比对和分析,共检测到8种巴尔通体,其中特利波契巴尔通体(Bartonella tribocorum)14株、昆州巴尔通体(B. queenslandensis)7株、菲西巴尔通体(B. phoceensis)2株、伊丽莎白巴尔通体(B. elizabethae)2株、B. kosoyi 1株、泰勒巴尔通体(B. taylorii)1株、罗莎利马巴尔通体(B. rochalimae)1株、森林巴尔通体(B. silvatica)1株。结论 云南省西双版纳州小型兽类存在巴尔通体感染,且呈现基因型和宿主多样性的特征。

关键词: 巴尔通体, gltA基因, 小型兽类, 西双版纳州

Abstract:

Objective To understand the status of Bartonella infection in small mammals living in Xishuangbanna Dai Autonomous Prefecture (referred to as Xishuangbanna Prefecture), Yunnan Province, for scientific evidences in local prevention and control of Bartonellosis. Methods Between 2021 and 2023, we captured small mammals in different environments in Menghai County, Mengla County, and Jinghong City of Xishuangbanna Prefecture, Yunnan Province. After morphological identification, the hearts, lives, spleens, and lungs were obtained, in which DNA was extracted to undergo amplification of the gltA gene fragment of Bartonella using PCR. Then the sequences of the positive PCR products were subsequently determined, and the homology and phylogenetic analysis were performed in the sequences obtained. Results A total of 219 small mammals representing 17 species were captured, including 193 rodents in 6 genera and 11 species, and 26 insectivores in 4 genera and 6 species. Among the captured small mammals, Rattus flavipectus was the most common (65.75%, 144/219), followed by Eothenomys eleusis (6.39%, 14/219), Mus pahari (4.57%, 10/219) and Crocidura dracula (4.57%, 10/219). A total of 29 small mammals were found to carry the target gene fragment, with a Bartonella infection rate of 13.24% (29/219). The infection rate was 14.58% (21/144), 7.14% (1/14), 40.00% (4/10), 22.22% (2/9) and 25.00% (1/4), respectively for Rattus flavipectus, Eothenomys eleusis, Mus pahari, Mus caroli and Niviventer fulvescens. By sequence alignment and analysis, 8 species of Bartonella were identified, in which 14 strains were associated with B. tribocorum, 7 strains with B. Queenslandensis, 2 strains with B. phoceensis, 2 strains with B. elizabethae, 1 strain with B. Kosoyi, 1 strain with B. Taylorii, 1 strain with B. Rochalimae, and 1 strain with B. sylvatica. Conclusion Bartonella infections are found in the small mammals living in the areas of Xishuangbanna Prefecture, Yunnan Province, and are characterized by diverse genotypes and hosts.

Key words: Bartonella, gltA gene, Small mammals, Xishuangbanna Prefecture

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