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儿童特发性血小板减少性紫癜外周血中CD_(4)、CD_(28)、sFas和sFasL表达的临床研究 被引量:1

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摘要 目的探讨T淋巴细胞表面分子CD4、CD28和凋亡蛋白sFas和sFasL在急慢性特发性血小板减少性紫癜(ITP)发病中的变化。方法用流式细胞术分别检测25例急性ITP和20例慢性ITP患儿及20例正常对照儿童外周血CD4+、CD2+8、CD4+CD2+8的表达;用酶联免疫夹心法(ELISA)测定急性ITP和慢性ITP患儿及正常儿童外周血sFas和sFasL的水平。结果①ITP患儿外周血中CD4+、CD2+8及CD4+CD2+8表达均低于正常对照组(P<0.05),aITP和cITP组间没有显著差异(P>0.05);CD4+细胞中CD2+8表达与正常对照相比无显著差异(P>0.05);②ITP患儿外周血淋巴细胞中的CD2+8表达率与CD4+表达率呈正相关(P<0.05);③aITP和cITP组患儿血清中的sFas和sFasL表达水平均明显高于对照组(P<0.05),且cITP组高于aITP组(P<0.05);3组之间有显著差异(P<0.05);④sFas和sFasL的表达水平呈正相关(r=0.660,P<0.05),CD2+8表达率和sFas水平没有明显相关性(P>0.05)。结论①CD4+T细胞分子和协同刺激分子CD2+8参与了儿童ITP的发病过程;且CD4+分子减少并非由于协同刺激CD28分子表达降低所致,CD4+T淋巴细胞无协同刺激分子CD28表达缺陷;②sFas和sFasL表达异常参与了儿童aITP和cITP的免疫病理过程,监测其变化有助于ITP的分型和预后。
出处 《河南职工医学院学报》 2010年第1期35-37,共3页 Journal of Henan Medical College For Staff and Workers
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参考文献11

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