食品科学 ›› 2003, Vol. 24 ›› Issue (7): 48-51.

• 基础研究 • 上一篇    下一篇

抗幽门螺杆菌牛初乳IgG酶解特性的研究(in Vitro)——抗幽门螺杆菌牛初乳IgG抗胃蛋白酶及胃酸屏障的研究

 熊勇华, 许杨, 魏华, 刘根平, 曾荣华   

  1. 中德联合研究院食品科学教育部重点实验室
  • 出版日期:2003-07-15 发布日期:2011-12-13

 XIONG  Yong-Hua, XU  Yang, WEI  Hua, LIU  Gen-Ping, ZENG  Rong-Hua   

  • Online:2003-07-15 Published:2011-12-13

摘要: 采用幽门螺杆菌全菌抗原免疫妊娠母牛,取牛初乳,离心、过柱得到纯化的免疫球蛋白G(IgG),经非还原态的SDS-PAGE(十二烷基磺酸钠聚丙烯凝胶电泳)和HPLC(高效液相色谱)分析,达到电泳纯和HPLC纯。纯化后的IgG在体外经胃蛋白酶和胃酸处理后,经还原态的SDS-PAGE,HPLC和间接ELISA法检测,结果表明在pH4.5以上的环境中,牛初乳中的抗幽门螺杆菌IgG对胃蛋白酶和胃酸屏障有一定的抗性。

关键词: 幽门螺杆菌, 免疫球蛋白, 胃蛋白酶

Abstract: Anti-Hp IgG was isolated from the colostrum that was immuned by Helicobacter pylori and purified by the ultra-centrifugation and column chromatography. The purification of IgG was examined by HPLC and SDS-PAGE, and the titer ofIgG was examined by ELISA, the resistance to pepsin and gastric juice was assayed by the method of SDS-PAGE,HPLC andELISA. The results showed that anti-Hp IgG had some resistance in the condition of pH above 4.5

Key words: Helicobacter pylori, IgG, pepsin