甲醛吸入性急性肺水肿大鼠心、肺、脑、肝、肾和血清T-AOC的变化

来源 :第九届中南地区实验动物科技交流会 | 被引量 : 0次 | 上传用户:treesoft_ng
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目的:探究甲醛吸入性急性肺水肿模型大鼠心、肺、脑、肝、肾和血清总抗氧化能力(TAOC)的变化规律,为研究此类肺水肿机制提供实验依据。 方法:健康成年SD大鼠18只随机分对 照组和模型组,按文献在染毒箱内以“静态+喷雾”吸入甲醛2h复制急性肺水肿模型,8h后眼球采血并处死,取心、肺、脑、肝、肾等组织以液氮速冻再转-80℃冰箱保存,按试剂盒操作测定血清及心、肺、脑、肝、肾等匀浆组织TAOC,同时计算成模前后体重差、肺/心系数及心、肺、肾等器官指数,肺组 织作常规病理检查。对照组把甲醛换为生理盐水,处理方法同模型组。 结果:与生理盐水对照组比较,模型组体重下降显著(体重差-21.49±28.44 VS-0.15±2.89,P<0.05),肺/心系数明显增大(2.29±0.47 VS 1.90±0.20,P<0.05),肺指数显著增大(7.16±1.45 VS 6.27±1.16,P<0.05),血清TAOC显著降低(5.73±2.04 VS 8.47±3.21,P<0.05),肾组织TAOC 则显著性升高(9.38±4.18 VS 5.61±0.97,P<0.05),脑、心、肺和 肝TAOC无显著性差异(均P>0.05)。病理显示模型组肺组织间隙增大、可见大量有核细胞浸润等间质肺水肿改变。 结论:大鼠血清T-AOC降低及肾TAOC升高可能参与甲醛吸入所致急性肺水肿的发病过程。
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