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经鼻黏膜诱导免疫耐受治疗实验性自身免疫性葡萄膜炎 被引量:3

The suppression of the experimental autoimmune uveoretinitis with retinal S antigens by intranasal tolerance induction
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摘要 目的探讨经鼻腔滴注牛视网膜S抗原诱导免疫耐受对Lewis大鼠自身免疫性葡萄膜视网膜炎(EAU)的影响。方法利用盐析和离子交换层析方法纯化牛视网膜S抗原,然后用其诱导Lewis大鼠鼻黏膜耐受,再用视网膜S抗原诱发EAU,观察EAU的发病情况、眼部临床表现、组织学改变、皮肤迟发型超敏反应、由视网膜S抗原和刀豆蛋白A刺激的淋巴细胞增殖反应,同时观察环磷酰胺对免疫耐受的影响。结果用牛视网膜S抗原鼻腔滴注诱导免疫耐受后再诱导EAU,耐受组8只大鼠仅有2只发病(25%),对照组6只(100%)全部发病,耐受组大鼠发病比例明显低于对照组(P=0·0097)。耐受组大鼠的发病开始时间平均为16·5d,对照组为10·3d,两者之间差异有统计学意义(F=26·32,P=0·000;q=9·723,P<0·01);耐受组大鼠EAU病变的临床评分为0·89,对照组为3·94,差异有统计学意义(F=12·48,P=0·000;q=7·904,P<0·01);耐受组大鼠的组织学分级为1·21,对照组为4·12,差异有统计学意义(F=11·80,P=0·000;q=7·510,P<0·01)。耐受组大鼠的EAU表现为虹膜血管轻度扩张,前房和玻璃体内少量炎性渗出,视网膜轻度肿胀,视网膜感光细胞损害均较轻。耐受组大鼠的皮肤迟发型超敏反应和由视网膜S抗原刺激的淋巴细胞增殖反应也明显轻于对照组;腹腔注射环磷酰胺可轻度增强S抗原诱导的免疫耐受作用,仅用环磷酰胺对EAU的炎性反应无明显影响。结论视网膜S抗原诱导的黏膜耐受可有效地预防由视网膜S抗原诱发的EAU。 Objective The aim was to investigate the suppression of rat experimental autoimmune uveoretinitis(EAU) by induced immune tolerance via intranasal administration of retinal S antigens. Methods The bovine S antigen was purified from bovine retina by salt precipitation and ionic exchange chromatography, the female Lewis rats were used to induce immune tolerance by intranasal administration with purified bovine retinal S antigens and then the rats were used to produce the EAU model by retinal S antigens challen...
出处 《中华眼科杂志》 CAS CSCD 北大核心 2006年第12期1118-1122,共5页 Chinese Journal of Ophthalmology
基金 天津市自然科学基金资助项目(01361021
关键词 葡萄膜炎 自身免疫疾病 免疫耐受 自身抗原 Uveitis Autoimmune diseases Immune tolerance Autoantigens
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