免疫刺激DNA序列与过敏原联用对哮喘小鼠模型气道过敏性炎症的作用

被引:2
作者
金美玲
蔡映云
袁正宏
郑玲洁
任涛
机构
[1] 复旦大学附属中山医院呼吸科,复旦大学附属中山医院呼吸科,复旦大学医学院分子病毒学实验室,复旦大学医学院分子病毒学实验室,复旦大学附属中山医院呼吸科上海,上海,上海
关键词
哮喘; 免疫刺激DNA序列; 气道过敏性炎症;
D O I
暂无
中图分类号
R562.25 [];
学科分类号
1002 ; 100201 ;
摘要
目的 观察免疫刺激DNA序列 (ISS DNA)单用和与过敏原卵白蛋白 (OVA)合用 ,对支气管哮喘 (简称哮喘 )小鼠模型气道过敏性炎症的作用及作用维持时间。方法 BALB/c小鼠 36只 ,分ISS组 (A组 ) 12只、ISS +OVA组 (B组 ) 12只、OVA组 (C组 ) 6只和生理盐水 (NS)组 (D组 ) 6只。A、B、C组用OVA致敏及激发。A组和B组根据注射次数再分A1、B11次注射组 (1次腹腔注射ISS DNA 10 0μg或ISS DNA 10 0 μg +OVA 10 μg)和A2 、B2 2次注射组 (2次腹腔注射ISS DNA或ISS DNA +OVA)。各组在第 1次激发后 6周中 ,每周采血 1次测特异性IgE ,最后处死小鼠测支气管肺泡灌洗液 (BALF)中细胞计数及分类 ,肺组织病理检查 ,检测脾细胞分泌γ干扰素 (IFN γ)的水平。结果 BALF中嗜酸细胞 (EOS)数A1组为 (2 39± 0 81)× 10 4/ml;A2 组为 (2 .6 2± 0 .77)× 10 4/ml;B1组为 (1.80± 0 .12 )× 10 4/ml;B2 组为 (1.84± 0 .6 7)× 10 4/ml,与C组 [(12 .4 3± 2 .13)× 10 4/ml]比较差异有显著性 (P <0 .0 5 )。脾细胞分泌的IFN γA1组为 (5 10± 10 2 )pg/ml;A2 组为 (492± 98)pg/ml;B1组为 (5 32± 12 0 )pg/ml;B2组为 (46 9± 132 )pg/ml,与C组 [(194± 80 )pg/ml]比较差异有显著性 (P <0 .0 5 )。血清IgE前 4周B组与C组比较
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页码:30 / 33+66
页数:5
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