抑制NF-κB对糖尿病大鼠肾组织ICAM-1表达的影响

被引:12
作者
毛拓华
李竞
刘梦江
秦莹
机构
[1] 武汉大学人民医院内分泌科
关键词
糖尿病肾病; 细胞间黏附分子-1; 核因子-κB; 吡咯烷二硫氨基甲酸;
D O I
暂无
中图分类号
R587.2 [糖尿病性昏迷及其他并发症]; R692.9 [其他疾病];
学科分类号
100201 [内科学]; 100221 [泌尿外科学];
摘要
目的:研究糖尿病大鼠肾组织细胞间黏附分子-1(ICAM-1)表达,以及用吡咯烷二硫氨基甲酸(PDTC)抑制核转录因子-κB(NF-κB)对其表达的影响。方法:用Wistar大鼠建立STZ诱导的糖尿病模型,设立正常对照组(NC组)、糖尿病组(DM组)、糖尿病PDTC干预组(DP组),8周末用免疫组化方法测定肾组织中ICAM-1含量;体外培养大鼠肾小管成纤维细胞(NRK),葡萄糖孵育下分6组:正常对照组、高糖1组、高糖2组含葡萄糖分别为5.6、15和30mmol/L,干预1~3组在葡萄糖30mmo/L基础上分别加入PDTC5、10、20μmol/L。24h、48h后采用RT-PCR及免疫细胞化学(ICC)法检测各组的ICAM-1表达情况。结果:8周末,DM组肾组织ICAM-1表达较NC组明显增高,DP组较DM组明显下降,但仍高于NC组。各组NRK细胞中,与正常组相比,高糖各组ICAM-1的mRNA和蛋白表达水平显著升高(P<0.05),且呈剂量时间依赖性;而不同浓度PDTC干预后,ICAM-1mRNA和蛋白表达水平显著下降(P<0.05),而且与PDTC呈剂量时间依赖性。结论:无论在体内或体外实验中,抑制NF-κB可降低ICAM-1的表达。
引用
收藏
页码:688 / 691+756 +756
页数:5
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