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联合阻断CD28/B7和ICOS对大鼠皮肤移植的影响 被引量:2

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摘要 目的探讨CD28/B7和ICOS/ICOSL对同种异体大鼠皮肤移植的影响。方法 Wistar大鼠随机分为四组,每组6只。A组:CTLA4Ig处理组,B组:ICOSIg处理组,C组:CTLA4Ig+ICOSIg处理组,D组:空白组。大鼠同种异体移植术后0、2、4 d,A、B、C组各抗体以150 mg/kg的剂量经腹腔注射,D组只注射同等量的生理盐水,术后观察皮肤存活情况。术后6 d处死各组受体鼠和供体鼠,取受体脾脏淋巴细胞与供体脾脏淋巴细胞作混合淋巴细胞反应(MLR)。术后7 d移植物作组织学分析。结果 MLR显示与对照组相比,各阻断剂治疗组淋巴细胞对供体淋巴细胞产生特异性低反应(P<0.05),能有效抑制免疫应答。组织学检查发现,各抗体治疗组移植皮肤结构基本正常。结论 CTLA4Ig、ICOSIg可以抑制免疫应答,诱导免疫耐受。
出处 《中外医学研究》 2011年第15期18-19,共2页 CHINESE AND FOREIGN MEDICAL RESEARCH
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参考文献7

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同被引文献20

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