中国血吸虫病防治杂志 ›› 2023, Vol. 35 ›› Issue (5): 508-512.

• 实验研究 • 上一篇    下一篇

安徽省猪芽囊原虫分子检测和亚型分布

高思潮,王继谱,吴星华,罗昕雨,李乔乔,陈东钱,刘欣超,李文超*   

  1. 安徽科技学院动物科学学院、动物营养调控与健康安徽省重点实验室(安徽 凤阳 233100)
  • 出版日期:2023-10-15 发布日期:2023-12-08
  • 作者简介: 高思潮,男,硕士研究生。研究方向:人兽共患原虫分子流行病学
  • 基金资助:
    安徽省自然科学基金(1808085MC84, 1908085QC116);安徽科技学院重点学科项目(AKZDXK2015A04);安徽科技学院校级稳定人才项目(dkwd201702)

Molecular detection and subtyping of Blastocystis sp. in pigs in Anhui Province

GAO Sichao, WANG Jipu, WU Xinghua, LUO Xinyu, LI Qiaoqiao, CHEN Dongqian, LIU Xinchao, LI Wenchao*   

  1. College of Animal Science, Anhui Science and Technology University, Anhui Province Key Laboratory of Animal Nutritional Regulation and Health, Fengyang, Anhui 233100, China
  • Online:2023-10-15 Published:2023-12-08

摘要: 目的 了解安徽省猪群芽囊原虫感染率和基因亚型分布。方法 2015年10—12月,从安徽省亳州市、安庆市、滁州市、合肥市、阜阳市和六安市规模化猪场采集500份猪粪便样本,采用基于芽囊原虫小亚基核糖体RNA(SSU rRNA)基因的PCR方法进行检测,并对获得的阳性样本进行测序和序列分析。通过PubMLST在线数据库对芽囊原虫亚型进行鉴定,并用Mega软件以邻接法构建进化树进一步验证芽囊原虫亚型。结果 安徽省猪群芽囊原虫感染率为43.2%(216/500),本次调查猪场均检测到芽囊原虫阳性样本。不同地区猪场芽囊原虫感染率(17.2%~50.0%)差异有统计学意义 ([χ2] = 26.084,P < 0.01),保育猪(39.6%)、断奶仔猪(19.1%)和育肥猪(62.3%)芽囊原虫感染率差异有统计学意义([χ2] = 74.951,P < 0.01)。在线序列征询及进化树分析均显示安徽省猪群存在ST1、ST3和ST5亚型,其中ST5为本次调查的优势亚型。结论 安徽省猪群芽囊原虫感染率较高,存在ST1、ST3和ST5 3种人兽共患亚型。  

关键词: 芽囊原虫, 基因亚型, 猪, 安徽省

Abstract: Objective To investigate the prevalence and subtype distribution of Blastocystis sp. in pigs in Anhui Province. Methods A total of 500 stool samples were collected from large⁃scale pig farms in Bozhou, Anqing, Chuzhou, Hefei, Fuyang, and Lu’an cities in Anhui Province from October to December 2015. Blastocystis was detected in pig stool samples using a PCR assay based on the small subunit ribosomal RNA (SSU rRNA) gene, and positive samples were subjected to sequencing and sequence analysis. Blastocystis subtypes were characterized in the online PubMLST database, and verified using phylogenetic tree created with the neighbor⁃joining algorithm in the Meta software. Results The prevalence of Blastocystis infection was 43.2% (216/500) in pigs in 6 cities of Anhui Province, and all pig farms were tested positive for Blastocystis. There was a region⁃specific prevalence rate of Blastocystis (17.2% to 50.0%) ([χ2] = 26.084, P < 0.01), and there was a significant difference in the prevalence of Blastocystis sp. among nursery pigs (39.6%), preweaned pigs (19.1%), and growing pigs (62.3%) ([χ2] = 74.951, P < 0.01). Both online inquiry and phylogenetic analysis revealed ST1, ST3, and ST5 subtypes in pigs, with ST5 as the predominant subtype. Conclusion The prevalence of Blastocystis sp. is high in pigs in Anhui Province, with three zoonotic subtypes identified, including ST1, ST3, and ST5.

Key words: Blastocystis, Subtype, Pig, Anhui Province

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