Suppr超能文献

叙利亚仓鼠(金黄地鼠)作为呼吸道合胞病毒感染的上呼吸道模型。

Syrian hamsters (Mesocricetus auratus) as an upper respiratory tract model for respiratory syncytial virus infection.

作者信息

Kolbe Sophie M, Guilfoyle Kate, Reineking Wencke, van Amerongen Geert, van der Net Guido, Lockow Sandra, Baumgärtner Wolfgang, Ludlow Martin, Osterhaus Albert D M E

机构信息

Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany.

Preclinical Specialty Services, Cerba Research, Schaijk, The Netherlands.

出版信息

Npj Viruses. 2025 Jan 8;3(1):2. doi: 10.1038/s44298-024-00086-6.

Abstract

Respiratory syncytial virus (RSV) is one of the leading causes of respiratory tract infection in children, immunocompromised individuals and older adults. Vaccines have recently been approved for use in adults and although further efforts to develop suitable interventions for children are ongoing, there are limited animal models for RSV infection. For preclinical efficacy testing of prophylactic and therapeutic treatments cotton rat and ferret models can be used. However, these can be expensive, difficult to source and house, and often have limitations such as insufficient virus replication in the respiratory tract and/or lack of horizontal transmission. In this study, Syrian hamsters (Mesocricetus auratus), which are relatively cheap, easy to source and house, were inoculated intranasally with a recombinant RSV-A-0594 strain expressing EGFP and using virological and pathological analyses. Viral replication was assessed and compared to viral replication in the ferret model. Although there was limited virus infection of the lower respiratory tract of Syrian hamsters, we show that a contemporary recombinant RSV-A strain replicates efficiently in the upper respiratory tract of Syrian hamsters (titers up to 4.5 Log10 TCID50/g and 12 Log10 RNA copies/g). These titers are comparable to those found in the ferret upper respiratory tract tissues post-infection with the same virus strain (up to 6.0 Log10 TCID50/g and 12 Log 10 RNA copies/g). Fluorescent regions indicating virus infection were macroscopically visible under UV-light in the nasal turbinates and histological assessment showed mucosal inflammation with necrotic cells in this tissue. In summary, Syrian hamsters generally displayed less severe systemic and pulmonary changes than ferrets, but do appear to be a promising model for upper respiratory tract infection with RSV.

摘要

呼吸道合胞病毒(RSV)是儿童、免疫功能低下者及老年人呼吸道感染的主要病因之一。最近已批准该疫苗用于成人,尽管针对儿童开发合适干预措施的进一步工作仍在进行中,但用于RSV感染的动物模型有限。对于预防性和治疗性治疗的临床前疗效测试,可使用棉鼠和雪貂模型。然而,这些模型可能成本高昂、难以获取和饲养,且往往存在局限性,如呼吸道病毒复制不足和/或缺乏水平传播。在本研究中,选用相对便宜、易于获取和饲养的叙利亚仓鼠(Mesocricetus auratus),经鼻内接种表达EGFP的重组RSV-A-0594株,并进行病毒学和病理学分析。评估病毒复制情况,并与雪貂模型中的病毒复制进行比较。尽管叙利亚仓鼠下呼吸道的病毒感染有限,但我们发现一种当代重组RSV-A株能在叙利亚仓鼠的上呼吸道高效复制(滴度高达4.5 Log10 TCID50/g和12 Log10 RNA拷贝/g)。这些滴度与相同病毒株感染后雪貂上呼吸道组织中的滴度相当(高达6.0 Log10 TCID50/g和12 Log10 RNA拷贝/g)。在紫外线下,鼻甲中可见指示病毒感染的荧光区域,组织学评估显示该组织存在伴有坏死细胞的粘膜炎症。总之,叙利亚仓鼠通常表现出比雪貂较轻的全身和肺部变化,但似乎确实是RSV上呼吸道感染的一个有前景的模型。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f8f/11721388/d364df522ed6/44298_2024_86_Fig1_HTML.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验