一、实验方法
1.肾小管上皮细胞(TEC)的制备:雄性SD大鼠,采用改良的胶原酶消化-密度梯度离心法分离肾近曲小管细胞,用DMEM培养液调整细胞悬液浓度为1×106 cell,置CO2培养箱中孵育,用光镜及台盼蓝拒染试验鉴定细胞。
2.实验分组:(1)空白对照组:对培养的TEC不作任何处理;(2)造影剂组:761泛影葡胺加入TEC悬液中,使其终浓度达到25μmol/L;(3)硫氮唑酮(Dihiazem)组:加入硫氮唑酮(终浓度9μmol/L)及泛影葡胺至TEC悬液;(4)精氨酸(L-Arg)组:加入L-Arg(终浓度6mmol/L)及泛影葡胺至TEC悬液;(5)Dihiazem与L-Arg组(D+L-Arg):加入Dihiazem及L-Arg和泛影葡胺至TEC悬液。5组标本置于CO2培养箱孵育60min。…… 基金项目:广东省医学科学技术研究基金资助项目(A1997017)
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收稿日期:2000-01-18
