通过IBDV阿根廷变种逃避孕产妇抗体保护
Juan Jaton1, Evangelina Gómez1, María Soledad Lucero1
1Laboratorio de Inmunología y Vacunas Aviares, Instituto de Agrobiotecnología y Biología Molecular, INTA-CONICET, Buenos Aires, Argentina.
Poultry science
|January 31, 2024
概括
基因组4 (G4) 传染性病病毒 (IBDV) 可以克服母体衍生抗体 (MDA) 在. 这凸显了在疫苗中需要变种菌株来保护IBDV.
科学领域:
- 兽医病毒学 兽医病毒学
- 免疫学 免疫学 免疫学
- 禽类的健康 禽类的健康
背景情况:
- 传染病 (IBD) 影响的幽默免疫力.
- 母亲衍生抗体 (MDA) 提供保护,但IBDV变异菌株构成威胁.
- 基因组4 (G4) 的IBDV感染尽管接种了基因组1 (G1) 的疫苗.
研究的目的:
- 调查局部G4IBDV分离物是否可以逃避的MDA诱导免疫力.
- 为了在MDA的存在下比较G4和G1IBDV分离物的致病性.
主要方法:
- 患有MDA的12天大的接种了G1 IBDV,G4 IBDV或PBS.
- 在注射后一周,评估了囊体比率,病毒载量和囊组织学损伤.
主要成果:
- 与对照组相比,G4感染的在囊体比率上表现出显著的差异.
- 感染G4的的病毒载量明显高于感染G1的.
- 在Fabricius的股票中观察到的组织学损伤仅在患有MDA的G4感染中观察到.
结论:
- 局部G4IBDV分离物可以绕过的MDA介导免疫力.
- G4IBDV分离物表现出与G1分离物相比较的致病性.
- 疫苗配方应包含IBDV变异菌株,以加强保护并减轻经济损失.
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