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First Report on Molecular Characterization of Anaplasmosis in Small Ruminants in Pakistan.
Journal of Parasitology ( IF 1.0 ) Pub Date : 2020-06-01 , DOI: 10.1645/19-90
Awais Ghaffar 1 , Muhammad Ijaz 1 , Ahmad Ali 1 , Shahid Hussain Farooqi 1 , Abdul Rehman 2 , Muhammad Muddassir Ali 3 , Muhammad Zeeshan Zafar 4 , Muhammad Anas Naeem 4
Affiliation  

Anaplasmosis is caused by a Gram-negative obligate intracellular bacterium of the genus Anaplasma with the pathogen having a zoonotic impact. The study aimed to estimate the prevalence of anaplasmosis in Pakistan, to unravel the association of potential risk factors, and to investigate the effect on hematological parameters in affected small ruminants. A total of 150 (n = 75 sheep; n = 75 goats) blood samples were initially screened microscopically and then subjected to PCR targeting the amplification of the 16S rRNA gene fragment of Anaplasma. The PCR-based positive samples were then processed for sequencing. Statistical analysis regarding risk factors was performed using R software. The study revealed an overall 29.33% (44/150) prevalence of anaplasmosis in small ruminants. Sheep had higher (P > 0.05) prevalence (32%) as compared to goats (25.30%). The final statistical model resulting from backward elimination showed only tick infestation as a significant predictor of infection status. The phylogenetic analysis of 16S rRNA gene of Anaplasma spp. revealed 9 study isolates clustered together and showed a close resemblance (99%) with Anaplasma ovis isolate (DQ837600) from Hungary. One of the isolates showed (99%) similarity with the isolate of Anaplasma marginale (MH155594) from Iraq. Furthermore, the hematological parameters pack cell volume, red blood cells, hemoglobin, white blood cells, granulocytes, monocytes, lymphocytes, and platelet count were decreased in Anaplasma-positive animals. This is the first study at the molecular level to characterize Anaplasma spp. in small ruminants of Pakistan, and it will be useful in developing control strategies for anaplasmosis.

中文翻译:

巴基斯坦小反刍动物无性症分子特征的首次报道。

厌食症是由厌食菌属的革兰氏阴性专性细胞内细菌引起的,病原体具有人畜共患作用。这项研究的目的是估计巴基斯坦的厌氧菌病患病率,揭示潜在危险因素的关联,并研究对受影响的小反刍动物血液学参数的影响。首先在显微镜下筛选了总共150个(n = 75绵羊; n = 75山羊)血液样本,然后进行了针对Anaplasma 16S rRNA基因片段的扩增的PCR。然后对基于PCR的阳性样品进行测序。有关风险因素的统计分析是使用R软件进行的。该研究显示,小型反刍动物中有29.33%(44/150)的厌氧菌病患病率。绵羊的患病率(P> 0.05)高于山羊(25)。30%)。由向后消除导致的最终统计模型仅显示tick虫感染是感染状况的重要预测指标。Anaplasma spp。16S rRNA基因的系统发育分析。共有9个研究分离株聚集在一起,并且与匈牙利的羊膜无形体分离株(DQ837600)相似(99%)。其中一种分离株显示出与来自伊拉克的无缘无核无形体分离株(MH155594)相似(99%)。此外,在血浆阳性动物中,血液学参数降低了细胞体积,红细胞,血红蛋白,白细胞,粒细胞,单核细胞,淋巴细胞和血小板计数。这是第一个在分子水平上鉴定无形体属的特征的研究。在巴基斯坦的小反刍动物中,将有助于制定无病菌控制策略。由向后消除导致的最终统计模型仅显示tick虫感染是感染状况的重要预测指标。Anaplasma spp。16S rRNA基因的系统发育分析。共有9个研究分离株聚集在一起,并且与匈牙利的羊膜无形体分离株(DQ837600)相似(99%)。其中一种分离株显示出与来自伊拉克的无缘无核无形体分离株(MH155594)相似(99%)。此外,在血浆阳性动物中,血液学参数降低了细胞体积,红细胞,血红蛋白,白细胞,粒细胞,单核细胞,淋巴细胞和血小板计数。这是第一个在分子水平上鉴定无形体属的特征的研究。在巴基斯坦的小反刍动物中,将有助于制定无病菌控制策略。由向后消除导致的最终统计模型仅显示tick虫感染是感染状况的重要预测指标。Anaplasma spp。16S rRNA基因的系统发育分析。共有9个研究分离株聚集在一起,并且与匈牙利的羊膜无形体分离株(DQ837600)相似(99%)。其中一种分离株显示出与来自伊拉克的无缘无核无形体分离株(MH155594)相似(99%)。此外,在血浆阳性动物中,血液学参数降低了细胞体积,红细胞,血红蛋白,白细胞,粒细胞,单核细胞,淋巴细胞和血小板计数。这是第一个在分子水平上鉴定无形体属的特征的研究。在巴基斯坦的小反刍动物中,将有助于制定无病菌控制策略。
更新日期:2020-05-22
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