摘要目的 探索一种抗狂犬病免疫核糖核酸(iRNA)的制备方法 ,为狂犬病病毒暴露后的免疫治疗开辟途径.方法 用狂犬病病毒免疫马,从抗体阳性血清的马匹中分离肝脏,依次采用十二烷基磺酸钠、苯酚、三氯甲烷、乙二醇单甲醚、十六烷基三甲基溴化铵、乙醇等提取总RNA.结果 提纯品经理化性质检测,得到的iRNA占肝脏总重的0.15%,其中DNA含量为2.86%,蛋白质含量为1.26%.最大吸收峰位于258 nm;A_(258)/A_(280)为2.0;RNA鉴别试验呈阳性反应.用高效液相色谱法测定,相对分子质量为13.7×10~3;增色效应50.67%.生物学活性测定结果 显示,白细胞黏附抑制率为41.73%.动物保护率为50%,生命延长率为31.62%.结论 实验提取的抗狂犬病iRNA,经用国家颁发的iRNA质控标准对照检测,结果 相同.为狂犬病治疗药物的研究奠定了实验室基础.

abstractsObjective To explore the preparation of specific immune RMA(iRNA) on anti-rabies and further study immunotherapy of rabies virus exposure. Methods Horses were immunized with the rabi-es virus and their livers were isolated from the horse of antiserum, from which total RNA was extracted and purified by sodium lauryisulfonate, phenol, chloroform, ethyiene glycol monomethyl ether, cetyltrimethyam-moniumbromide and alcohol. Results Pure preparation physico-chemical characterization was analyzed, and it's weight was 0.15% of weight of liver. The RNA contained 2.86% DNA and 1.16% protein. The iRNA with a maximum UV absorbance at 258 nm and A_(258/280) about 2.0. The test of RNA was positive, which had a relative molecular mas of 13.7×10~3 by high performance liquid chromatography(HPLC), and its hy-perchromic effect was 50.67%. The vesults of biological activity was showed that the rate of leucocyte adher-ence inhibition(LAI) was 41.73%, The protective rate was 50% and prolonging the life was 31.62%. Conclusion The results obtained with the practical value were identical and provide a basis on medicines of anti-rabies.