在老年罗博洛夫斯基矮鼠仓鼠中,SARS-CoV-2 导致慢性肺炎和呼吸能力受损
Amirhossein Karimi1, Carolin M Lieber1, Kaori Sakamoto2
1Center for Translational Antiviral Research, Georgia State University Institute for Biomedical Sciences, Atlanta, Georgia, USA.
Journal of virology
|August 11, 2025
概括
感染SARS-CoV-2的老矮子经历了更严重的疾病和持久的肺损伤. 尼尔马特里尔维尔 + 里托纳维尔等抗病毒疗法可以预防长期呼吸系统问题,强调年龄是COVID-19严重性的关键因素.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 肺部病理学 肺部病理学
背景情况:
- 罗博罗夫斯基矮鼠仓鼠易受SARS-CoV-2感染,在老年人等弱势群体中反映了严重的COVID-19.
- 宿主年龄是COVID-19严重程度和长期呼吸道并发症的重要因素.
研究的目的:
- 为严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2) 感染建立矮鼠仓鼠模型,评估不同年龄组的疾病严重程度和长期肺部恢复.
- 为了评估抗病毒治疗在预防慢性肺炎和呼吸系统后续症的疗效,在SARS-CoV-2感染后的老年仓鼠中.
主要方法:
- 整体囊造影用于评估幼年,成年和老年矮子在感染SARS-CoV-2 Omicron BA.4.4.的鼻腔感染后的呼吸功能.
- 监测疾病的严重程度,肺病毒载量,呼吸道过敏度和呼吸能力. 长期的肺功能在感染后的45天内被评估.
- 尼尔马特雷尔维尔 + 里托纳维尔和莫尔努皮拉维尔对急性疾病和随后的呼吸系统后果的影响在老年仓鼠中进行了研究.
主要成果:
- 与年轻动物相比,老年矮鼠表现出更严重的临床症状,更高的肺病毒载荷,以及增加的死亡率.
- 老年仓鼠出现过渡性气道过敏,并在急性感染期间显示肺容量受损,呼吸功能受损持续45天.
- 尼尔马特里尔维尔 + 里托纳维尔或莫尔努皮拉维尔的抗病毒治疗可以预防老年仓鼠的长期呼吸系统后果,尼尔马特里尔维尔 + 里托纳维尔可以实现完全生存并消除呼吸困扰.
结论:
- 宿主年龄与SARS-CoV-2疾病的严重程度和矮子呼吸能力受损的慢性肺炎的发展密切相关.
- 这种模型有效地回顾了危险宿主中严重的COVID-19并证明了早期抗病毒疗法的关键好处,以保持长期的呼吸系统健康.
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