印度新出现的Mpox病毒的隔离和特征
Sushil Kumar Sharma1, Paban Kumar Dash1, Ram Govind Yadav1
1Division of Virology, Defence Research & Development Establishment (DRDE), Gwalior, India.
Journal of medical virology
|July 3, 2023
概括
科学家们成功地隔离和描述了印度的Mpox病毒 (MPXV). 这一突破有助于理解病毒.
科学领域:
- 病毒学 病毒学
- 基因组学就是基因组学.
- 传染性疾病 传染性疾病
背景情况:
- 在全球范围内,Mpox (以前的麻疹) 已经重新出现,在印度等非流行地区发现了人与人之间的传播.
- 准确的诊断和病毒分离物的特征对于公共卫生反应至关重要.
研究的目的:
- 报告印度首次成功隔离Mpox病毒 (MPXV).
- 进行孤立的MPXV.的表型和基因型表征.
- 了解印度MPXV与全球菌株的分离的遗传关系.
主要方法:
- 从使用Vero E6细胞培养的qPCR阳性皮肤病变样本中分离病毒.
- 通过qPCR和斑块检测确认了分离和复制动力学的确定.
- 全基因组测序用于识别单核酸多态 (SNP) 和插入/删除 (INDEL),然后进行基因组学分析.
主要成果:
- 成功隔离MPXV,在细胞培养中观察到特征性细胞病变效应.
- 复制动力学显示,感染后72小时的最大病毒标位为log 6.3 PFU/mL.
- 整个基因组分析揭示了独特的SNP和INDEL,将隔离物置于IIb分类的A.2系内,与其他印度和国际MPXV菌株密切相关.
结论:
- 这项研究展示了印度首次成功隔离和MPXV的综合性特征.
- 这些发现为印度MPXV分离品的遗传多样性和遗传学定位提供了宝贵的见解.
- 这项工作对于在印度和全球范围内制定针对Mpox的诊断和治疗策略至关重要.
相关概念视频
Smallpox
Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.
Poliomyelitis
Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...


