Objective Urine is a promising biomarker source for clinical proteomics *** physiological differences are common in multi-center clinical *** this study,we investigate whether significant differences are present in th...
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Objective Urine is a promising biomarker source for clinical proteomics *** physiological differences are common in multi-center clinical *** this study,we investigate whether significant differences are present in the urinary proteomes of individuals from different regions in *** In this study,morning urine samples were collected from healthy urban residents in three regions of China(Haikou,Xi’an and Xining)and urinary proteins were preserved using a membrane-based method(Urimem).The urine proteomes of 27 normal samples were analyzed using LC-MS/MS and compared among three *** annotation of the differential proteins among the three areas was analyzed using the DAVID online database,and pathway enrichment of the differential urinary proteins was analyzed using *** We identified 1898 proteins from Urimem samples using label-free proteome quantification,of which 56 urine proteins were differentially expressed among the three regions(P<0.05).Hierarchical clustering analysis showed that inter-regional differences caused less significant changes in the urine proteome than intersex *** gender stratification,16 differential proteins were identified in male samples and 84 differential proteins were identified in female *** these differential proteins,several proteins have been previously reported as urinary disease *** Urimem will facilitate urinary protein storage for large-scale urine sample *** differences are a confounding factor influencing the urine proteome and should be considered in future multicenter biomarker studies.
目的采用组合分析法探讨中国北方汉族人群HLA-DRB1、-DQA1等位基因与乙型肝炎病毒(hepatitis B virus,HBV)感染不同结局的关系。方法采用序列特异性引物多聚酶链式反应(PCR-SSP)技术对207名慢性乙型肝炎患者和148名自限性HBV感染者进行H...
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目的采用组合分析法探讨中国北方汉族人群HLA-DRB1、-DQA1等位基因与乙型肝炎病毒(hepatitis B virus,HBV)感染不同结局的关系。方法采用序列特异性引物多聚酶链式反应(PCR-SSP)技术对207名慢性乙型肝炎患者和148名自限性HBV感染者进行HLA-DRB1、DQA1等位基因的检测,并运用病例对照研究设计和组合分析法比较HLA-DRB1、-DQA1等位基因与HBV感染不同结局的关系。结果携带HLA-DQA1*0102或HLA-DQA1*0301等位基因者,感染HBV后发展为慢性乙肝的风险显著低于不携带这些等位基因者,比值比(odds ratio,OR)分别为0.23和0.52。用此两个等位基因进行组合分析发现,仅携带HLA-DQA1*0102或HLA-DQA1*0301任何一个等位基因者,较不携带HLA-DQA1*0102和HLA-DQA1*0301两个等位基因者发展为慢性乙肝的风险显著降低(OR=0.28,x^2=31.16,P<0.0001),而同时携带HLA-DQA1*0102和HLA-DQA1*0301两等位基因者,发展为慢性乙肝的风险降低则更为明显(OR=0.16,x^2=5.86,P=0.02)。结论具有两个保护(或危险)作用的等位基因者比不具有或仅有其中一个等位基因者对HBV感染的结局影响更大。
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