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毛细支气管炎发病机制

来源:[标签:来源] | 发布时间:2011-07-22 00:45:05 | www.chinesejk.com

  研究较多的是免疫学机制,几个事实可以表明在RSV引起的毛细支气管炎的发病机制中存在免疫损害:

  ①恢复期的毛细支气管炎婴儿的分泌物中发现有抗RSV IgE抗体;

  ②近来对感染RSV的婴儿与动物模型的研究表明在RSV感染时有大量的可溶性因子的释放(包括白介素、白三烯、趋化因子)导致炎症与组织破坏;

  ③经胃肠道外获得高抗原性、非活化的RSV疫苗的儿童在接触野毒株RSV时比对照组更容易发生严重的毛细支气管炎。

  目前认为具有过敏体质者,发生RSV或其他病毒感染时,更易于引起毛细支气管炎,毛细支气管炎患者日后发生反复哮喘发作,甚至效果哮喘的机制尚不完全清楚。

(编辑:小鱼 )

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