开发一种基于细胞培养的方法,用于检测牛奶产品中的传染性脑炎病毒 (TBEV)
Catherine Hennechart-Collette1, Laure Mathews-Martin2, Lisa Fourniol1
1Université Paris-Est, ANSES, Laboratory for Food Safety, F-94700, Maisons-Alfort, France.
Food microbiology
|September 7, 2024
概括
一种新的细胞培养方法可以在生牛奶和奶酪中检测感染性脑炎病毒 (TBEV). 这一进步有助于通过在疫情期间识别乳制品中的TBEV污染来提高食品安全.
科学领域:
- 食品安全 食品安全
- 病毒学 病毒学
- 微生物学 微生物学
背景情况:
- 与生牛奶产品相关的传染性脑炎病毒 (TBEV) 疫情在欧洲构成了公共卫生风险.
- 现有的TBEV检测分子方法对于乳制品中的传染性病毒缺乏常规应用.
研究的目的:
- 开发和评估一种基于细胞培养的方法,用于检测在原始山羊奶和奶酪中的传染性TBEV.
- 在乳制品矩阵中评估TBEV感染性测定的灵敏度.
主要方法:
- 人工污染的原始山羊奶和奶酪 (Faisselle,Tomme) 具有不同的TBEV水平.
- 用牛奶或奶酪提取物感染Vero细胞 (奶酪的A和B方法).
- 对细胞病变效应 (CPEs) 的观察和通过基因组复制量增加确认TBEV复制.
主要成果:
- 在生牛奶中检测到传染性TBEV,低至10^3 TCID50/mL.
- 方法A和B检测到Faisselle奶酪中的TBEV降至9.28 × 10^1 TCID50/2.5g.
- 方法A显示出Tomme奶酪的检测率略高于方法B.
结论:
- 一种定性细胞培养方法有效地检测了人工污染的生牛奶和奶酪中的传染性TBEV.
- 这种方法显示出在乳制品中TBEV的食物传播疫情调查中使用的潜力.
相关概念视频
Vaccine Production
Vaccine production involves a sequence of upstream and downstream processes to generate a safe and effective immunological product. It begins with cultivating microorganisms, such as viruses or bacteria, to obtain antigenic material. For viral vaccines, mammalian host cells are grown in bioreactors and subsequently infected with the target virus. The virus replicates within the host cells, which are lysed to release viral particles. This lysate is then clarified through filtration or...
Bacterial Gastroenteritis
Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid receptor...


