【摘要】 目的建立激素耐药型原发性肾病综合征(SRNS)儿童与激素敏感型原发性肾病综合征(SSNS)儿童尿液全蛋白双向凝胶电泳(2-DE)图谱,分析差异的蛋白质位点,为研究原发性肾病综合征(INS)糖皮质激素耐药的机制提供依据。方法病例来源于湘雅二医院儿科住院部,收集时间为2005-01-2005-10,入选的INS患儿依据中华医学会儿科学分会肾脏病学组制定的诊断标准,分为3组,每组5例。利用2-DE技术分离SRNS与SSNS(治疗前、后)儿童尿液总蛋白质,Image Master 2D V3.01分析软件进行凝胶图像分析。结果获得了图像清晰、分辨率高的SRNS组、SSNS(治疗前)与SSNS(治疗后)组儿童尿液2-DE图谱,3组点数分别为(206±8)个、(204±5)个、(55±5)个;SRNS组与SSNS组(治疗前)尿液2-DE凝胶共筛选出差异蛋白质点66个;SRNS组与SSNS组(治疗后)尿液2-DE凝胶共筛选出差异蛋白质点33个。结论该研究成功建立了分辨率高且重复性较好的SRNS与SSNS儿童尿液全蛋白的2-DE图谱;通过组间尿液2-DE图谱分析,发现了一些可能与INS激素耐药或敏感有关的蛋白质位点,为进一步运用蛋白质组学技术寻找与INS激素耐药抑或激素敏感相关的蛋白质打下了基础。更多还原

【Abstract】 Objective To investigate a proteome profile of urine in children with steroid-resistant or-sensitive idiopathic nephrotic syndrome(INS)by two-dimensional polyacrylamide gel electrophoresis(2-DE),in order to search for the different proteins for the further study of steroid-resistant mechanisms in INS.Methods Collect urine samples from children with steroid-resistant INS(SSNS),steroid-sensitive INS(SRNS)before and after steroid therapy,then use 2-DE and Image Master 2D V3.01 software to analyze the different expression of proteins in 2-DE gels.Results Mean protein spots of the 2-DE gels were(206±8),(204±5),(55±5)in children with SRNS,SSNS before or after steroid treatment.Sixty-six different protein spots were screened between the SRNS and SSNS group before steroid therapy.Thirty-three different protein spots were screened between SRNS and SSNS after steroid therapy.Conclusion A distinct and reproducible 2-DE profile of urine proteome is successfully established in children with steroid-resistant and steroid-sensitive INS.By the differentiated analysis,the differences of urine proteome profiles are discovered between steroid-resistant and steroid-sensitive INS,and some of these special proteins may be related to the mechanism of steroid-resistant and steroid-sensitive in INS.更多还原