狼疮性肾炎病人肾脏组织中IL-6 mRNA的表达

The Expression of IL 6 mRNA in Kidneys of Patients Whith Lupus Nephritis

为探讨ＩＬ－６在狼疮性肾炎病人肾脏组织中的表达情况及其致病作用，我们用ＲＴ－ＰＣＲ和原位杂交方法对狼疮性肾炎病人和正常人肾穿标本中的ＩＬ－６ｍＲＮＡ进行检测。结果：（１）用ＲＴ－ＰＣＲ方法检测的５例病人都有ＩＬ－６ｍＲＮＡ的表达，而３例正常对照中仅一例有弱的ＩＬ－６ｍＲＮＡ的表达。（２）用地高辛标记的ＩＬ－６ｃＤＮＡ探针，对１３例病人进行原位杂交检测，结果都有不同程度ＩＬ－６ｍＲＮＡ的表达，表达部位在肾小球系膜细胞、小管上皮细胞、血管内皮细胞和间质细胞等。而３例正常对照未检测到ＩＬ－６ｍＲＮＡ的表达。表明在狼疮性肾炎病人肾脏组织中ＩＬ－６ｍＲＮＡ表达增高，且ＩＬ－６ｍＲＮＡ的高表达与血清中ＡＮＡ水平及肾脏ＩｇＧ、Ｃ３沉积可能有关。提示ＩＬ－６在狼疮性肾炎发病中可能有重要的病理作用。

y means of RT PCR and in situ hybridization with digoxigenin labeled IL 6 cDNA probe,we detected the expression of IL 6 mRNA in kidneys of patients with lupus nephritis and normal persons as control.The results showed that the IL 6 mRNA was detectable in kidneys of all 5 patients and only 1 of 3 normal persons by RT PCR,and it was detectable in kidneys of all 13 patients by in situ hybridization,but none of 3 normal persons.In addition,May be there are some correlation between IL 6 mRNA expression and serum level of ANA or deposition of IgG and C3 in kidneys.Our study indicates that IL 6 may play a pathogenic role in lupus nephritis.