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Molecular investigation, isolation and phylogenetic analsysis of Coxiella burnetii from aborted fetus and ticks
Comparative Immunology, Microbiology and Infectious Diseases ( IF 2 ) Pub Date : 2020-10-23 , DOI: 10.1016/j.cimid.2020.101571
Yunus Kilicoglu , Abdurrahman Anil Cagirgan , Gulnur Serdar , Selma Kaya , Yuksel Durmaz , Yunus Gur

Q fever is a zoonotic infection threatening human health, causing abortions in cattle, sheep and goats. Coxiella burnetii (C. burnetii) also causes serious problems such as low birth weight, infertility. This study is the first exemplary for analysis of Q fever around Black Sea region in Turkey. In the study, a total of 270 aborted fetuses (171 cattle, 79 sheep, 20 goats) and 1069 tick samples were aimed to be searched by PCR method. C. burnetii DNA was detected in 8 (2.96 %) of 270 sheep specimens while it could not be found in cattle and goat specimens. 406 sample pools were created from 1069 tick samples (490 male, 579 female) collected from 254 farm animals (187 cattle, 54 sheep, 13 goats) and 11 of these were stated positive. Tick species determined as C. burnetii positive were Hyalomma marginatum, Hyalomma anoliticum excavatum, Hyalomma detritum and Boophilus annulatus. Agent isolation was carried out within embryonated eggs. Agents were stained with Giemsa and was showed. Sequence analysis was performed for TUR/SAM/coxiella_1 (MN917207) isolate and phylogenetic tree was created. This tree, created in compliance with IS1111 transposon gene, did not form different branches in regard to host affiliation (goat, sheep, tick, human) and geographical distribution. As a result, an important zoonotic agent, C. burnetii was diagnosed in sheep aborted fetuses and the infection was proved to have spread among sheep herds in Black Sea region. Besides, 4 separate tick species found in our region hosted the agent and were found important for infection.



中文翻译:

胎儿和壁虱流产柯杆菌的分子生物学研究,分离和系统发育分析

Q热是威胁人的健康的人畜共患感染,导致牛,羊和山羊流产。氏杆菌C. burnetii)也引起严重的问题,例如低体重,不育。这项研究是土耳其黑海地区Q热分析的第一个示例。在这项研究中,共计有270例流产的胎儿(171头牛,79头绵羊,20头山羊)和1069滴答标本通过PCR方法进行了搜索。伯氏梭菌在270个绵羊标本中有8个(2.96%)被检测到DNA,而在牛和山羊标本中则找不到。从254个农场动物(187头牛,54头绵羊,13头山羊)收集的1069个tick虫样本(490个雄性,579个雌性)中创建了406个样本池,其中11个呈阳性。蜱物种确定为贝氏柯克斯阳性是璃眼marginatum璃眼anoliticum excavatum,璃眼detritum小牛蜱annulatus。试剂分离是在有胚卵中进行的。药剂用吉姆萨染色并显示出来。对TUR / SAM / coxiella_1(MN917207)分离物进行了序列分析,并创建了系统树。根据IS1111转座子基因创建的这棵树在寄主隶属关系(山羊,绵羊、,、人)和地理分布方面没有形成不同的分支。结果,在流产的绵羊的胎儿中诊断出一种重要的人畜共患病菌伯氏梭状芽胞杆菌,并证明感染已在黑海地区的绵羊群中传播。此外,在我们地区发现的4种不同的壁虱物种是该病原的宿主,被发现对感染很重要。

更新日期:2020-10-30
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