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使用一个实验性的Jaagsiekte绵羊复原病毒感染模型跟踪绵羊肺腺癌的发展

Chris Cousens¹, James Meehan², David Collie²

¹Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK.

|August 29, 2024

概括

一个新的实验模型有效地复制了绵羊肺腺癌 (OPA),帮助对Jaagsiekte绵羊逆转录病毒 (JSRV) 感染和疾病进展的研究. 该模型允许使用成像技术监测OPA的发展和进展.

科学领域:

兽医病理学兽医病理学
动物模型动物模型
复原病毒性疾病复原病毒性疾病

背景情况:

绵羊肺腺癌 (OPA) 是一种严重的感染性新生肺病在绵羊.
了解OPA的病原性对于开发控制策略至关重要.
目前研究Jaagsiekte绵羊复原病毒 (JSRV) 感染和OPA进展的现有模型是有限的.

研究的目的:

开发和验证一种实验诱导的绵羊肺腺癌 (OPA) 模型.
建立一个监测OPA发育和JSRV感染后进展的系统.
为了比较计算机断层扫描 (CT) 和超声波用于追踪OPA病变的疗效.

主要方法:

在低剂量,中剂量和高剂量的病毒中, Bronchoscopic 灌注 JSRV 进入羊的右心肺叶.
每月进行计算机断层扫描 (CT) 和跨胸部超声波扫描,用于诊断和监测.
尸检后检查和免疫组织化学检查以确认OPA.

主要成果:

在89%受JSRV感染的绵羊中,OPA被证实存在,病毒剂量不同,病变类型各不相同.
31%的受感染羊出现了先进的局部病变,瘤体积的翻倍时间为14.8±2.1天.
CT和超声波显示在追踪瘤发育方面存在强烈的显著关联 (R2 = 0.799,p < 0.0001).

结论:

开发的OPA模型准确地复制了自然发生疾病的关键方面.
该模型为调查JSRV感染性和OPA病原发生提供了有价值的工具.
该研究验证了CT和超声波的联合使用,用于监测绵羊的OPA进展.

关键词:

动物模型动物模型计算机断层扫描 (CT) 是一种计算机断层扫描.绵羊的肺腺癌.超声波超声波是指超声波的使用.

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