机构地区: 佛山科学技术学院生命科学学院动物医学系
出 处: 《兽医大学学报》 2003年第3期271-273,共3页
摘 要: 用不同毒力的鸭肝炎病毒株人工感染雏鸭 ,建立了鸭病毒性肝炎病理模型。于感染后 1、3、5、7d剖杀雏鸭 ,采集血液和肝脏样品 ,测定血浆和肝组织中的一氧化氮 (NO)、超氧化物歧化酶 (SOD)和丙二醛 (MDA) ,研究了自由基在鸭病毒性肝炎发病过程中的作用。结果表明 :雏鸭感染不同毒力株鸭肝炎病毒后 1 d,血浆 NO含量开始上升 ,3d显著或极显著高于对照组 ,并持续至试验结束 ;肝组织 NO含量在感染后 1 d便显著升高。不同毒力株感染组雏鸭血浆和肝组织中 SOD活性在感染后 1 d便低于或显著低于对照组 ,而不同毒力株感染组雏鸭血浆和肝组织中的 MDA却高于或显著高于对照组。提示 。 The pathological model of duck virus hepatitis(DVH) were established by infection with different toxic strains of duck hepatitis virus(DHV).Blood and liver tissue sample were collected after infection of day 1,3,5 and 7,respectively.content of Nitric oxide(NO) and malondialdehyde(MDA),and superoxide dismutase(SOD) activity were determined to evaluate the roles of free radicals in pathological progress of DVH.The results showed that NO content in plasma and liver tissue increased or apparently increased after day 1 of infection.SOD activity in Plasma and liver tissue of ducks infected with different strains of DHV obivously decreased while MDA content markedly elevated after day 1 of infection as compared with the control ducks.These findings indicated that free radicals may play an important role in the pathogenesis of DVH.