在日本从猪身上分离出来的Actinobacillus pleuropneumoniae的表征,使用全基因组测序
Manao Ozawa1, Motoshi Kawano1, Hitoshi Abo1
1National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, 1-15-1, Tokura, Kokubunji, Tokyo 185-8511, Japan.
Comparative immunology, microbiology and infectious diseases
|September 23, 2023
概括
整个基因组测序揭示了Actinobacillus pleuropneumoniae血清型的变化,其中6型和15型的增加. 抗微生物耐药性基因存在于一些孤立物中,但并不普遍.
科学领域:
- 兽医微生物学 兽医微生物学
- 基因组学就是基因组学.
- 动物卫生 动物健康
背景情况:
- pleuropneumoniae 是一个重要的猪病原体.
- 疫苗对新出现的血清型的疗效令人担忧.
- 了解遗传多样性对于疾病控制至关重要.
研究的目的:
- 研究病猪中Actinobacillus pleuropneumoniae分离物中的血清型,毒性和抗菌素耐药性 (AMR) 基因.
- 使用全基因组测序分析分离物之间的遗传关系.
- 评估AMR的流行率和遗传基础.
主要方法:
- 在Actinobacillus pleuropneumoniae孤立的全基因组测序.
- 基于核心基因组单核酸多形态 (SNP) 的血清型和遗传学分析.
- 抗微生物耐药性基因及其位置的识别和表征 (等离子体衍生).
主要成果:
- 血清型2是最常见的 (71.2%),但血清型6 (13.6%) 和15 (6.8%) 的患病率增加.
- 血清型6和15的分离物可能对当前的疫苗敏感性较低.
- 抗微生物药物耐药性基因,特别是四环素,在32.2%的分离物中被发现;耐药性表型和基因型相关.
- 等离子体衍生型的体含有各种AMR基因.
结论:
- 循环中的Actinobacillus pleuropneumoniae分离体表现出与疫苗菌株不同的遗传特性.
- 虽然存在一些AMR基因,但在这些隔离品中,广泛的抗微生物耐药性可能不是当前的问题.
- 监测新出现的血清型和AMR对于有效的猪病管理至关重要.
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