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Establishment of SCID-HuRAg model with rheumatic synovium in ear pouch and its application in efficacy evaluation of infliximab
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 15
- DOI:
- 10.3321/j.issn:1000-2790.2008.15.001
- Key Word:
- 关节炎;类风湿;联合免疫缺陷小鼠;模型;动物;滑膜炎
Abstract： 目的:建立一种简便、可靠、易于给药及观察的小鼠荷人类风湿关节炎(BA)滑膜模型,为抗BA药物疗效及其机制的体内研究提供实验系统.方法:无菌获取4例RA患者膝关节滑膜组织,修剪成3mm2大小,移植入严重联合免疫缺陷小鼠(SCID)耳廓皮下,同时以2例OA滑膜作为对照.移植入4 wk后开始,给予TNF-αmAb体英夫利昔治疗4 wk,以无关抗人IsGl抗体作为对照.隔日观察,根据移植物红肿程度对炎症进行评分.移植入8 wk后,处死小鼠取出移植物,进行苏木素.伊红(HE)染色病理分析.结果:人滑膜在SCID小鼠体内存活至少8 Wk,移植后RA滑膜炎症大体评分高于OA滑膜组(P<0.05);移植前后RA滑膜病理特点无明显变化,经局部注射TNF-α抗体治疗后炎症评分降低(P<0.05),病理检测示滑膜增殖及淋巴细胞浸润评分降低(P<0.05).结论:SCID-HuRAg模型的病理特点与RA患者体内类似;经局部注射生物靶向药物英夫利昔后有相应改善,是对RA滑膜炎症机制进行体内研究的一种简便实用模型.
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