美国牛肉中 Sarcocystis bovifelis 类肉囊的形态和分子特征
Aditya Gupta1, Larissa S de Araujo1, Andrew Hemphill2
1United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Centre, Animal Parasitic Diseases Laboratory, Beltsville, MD, 20705-2350, USA.
Parasites & vectors
|December 28, 2024
概括
在美国牛肉中发现了一种新型厚壁的Sarcocystis物种,与Sarcocystis bovifelis非常相似. 这一发现对于了解寄生虫的流行率和牛群的经济影响至关重要.
科学领域:
- 兽医寄生虫学 兽医寄生虫学
- 食品安全 食品安全
- 分子诊断学 分子诊断学
背景情况:
- 在全球范围内,sarcocystis寄生虫在牛中很常见,经济影响通常与正确的诊断有关.
- 厚壁的Sarcocystis物种可以引起牛的eosinophilic myositis,导致尸体的谴责.
- 厚壁的Sarcocystis物种的流行程度,特别是在美国,还不是很确定的.
研究的目的:
- 在美国牛肉中发现的一种厚壁的Sarcocystis物种的特征.
- 将新物种在形态和遗传上与已知的Sarcocystis物种进行比较.
主要方法:
- 使用酸素消化,显微镜,组织学和传输电子显微镜 (TEM) 分析了牛肉样本.
- 分子特征包括对多个遗传标记的测序 (18S rRNA,28S rRNA,cox1,ITS1,gapdh1,ron3,rpoB).
主要成果:
- 形态学检查显示了与原来的Sarcocystis bovifelis描述不同的特征.
- 分子分析显示,与来自德国和阿根廷的S. bovifelis样囊细胞100%相同.
结论:
- 在来自美国的牛肉中发现了一种新型厚壁的Sarcocystis物种.
- 为了正式命名和对这种新物种进行完整的描述,需要进一步评估.
关键词:
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