排序方式： 共有42条查询结果，搜索用时 0 毫秒
41.
目的 探讨基质金属蛋白酶-1(MMP-1)基因多态性与食管鳞癌发病风险的关系.方法 运用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)分析方法检测450对病例与对照中MMP-1的1G/2G基因多态性.结果 与1G等位基因携带者(包括1G/1G及1G/2G基因型)比较,2G/2G基因型携带者与食管鳞癌显著相关[OR=1.39;95%可信区间(CI):1.06～1.81].此外,食管鳞癌的发病风险在吸炳者及女性中更加显著,其OR及95%CI分别为1.59(1.09～2.31)及1.76(1.05～2.97).结论 MMP-1基因多态性可能在食管鳞癌的发生过程中起到一定作用.Abstract： Objective Our study aimed to test the association between the matrix metalloproteinase-1 ( MMP-1) polymorphism and risk of esophageal squamous cell carcinoma ( ESCC ) . Methods We determined the MMP-1 polymorphism in 450 ESCC cases and 450 frequency-matched controls by polymerase chain reaction-based restriction fragment length polymorphism (PCR-RFLP). Results We found evidence for a significant association between the 2G/2G genotype and ESCC risk compared with 1G allele,including 1G/1G genotype and 1G/2G genotype [OR = 1. 39;95% confidence interval (CI), 1. 06-1. 81].Furthermore,the increased risk was found to be in smokers (OR,1. 59;95% CI, 1. 09-2. 31) and in female (OR, 1.76;95% CI, 1.05-2. 97). Conclusion Our study suggests that the MMP-1 promoter polymorphism may play a role in the etiology of ESCC. 相似文献
42.
目的Aurora-A基因过度表达可引起中心粒异常、染色体不稳定和肿瘤形成。本研究探讨Aurora-APhe31Ile多态与神经母细胞瘤（neuroblastoma,NB）遗传易感性的关系。方法以聚合酶链反应（PCR）和限制性片段长度多态性（RFLP）分析方法,检测了19例NB病人和144例正常对照者Aurora-APhe31Ile基因型,比较不同基因型与NB发生和发展的关系。结果Aurora-AIle等位基因频率在NB患者和正常对照中的分布有显著性差异（76.3%vs.49.0%,P=0.04）。Aurora-A三种基因型Phe/Phe、Phe/Ile和Ile/Ile在病例和对照组中的分布有统计学显著性差异（P=0.05,趋势检验）,携带Aurora-AIle/Ile基因型者罹患NB的风险是Phe/Phe或Phe/Ile基因型携带者的2.51倍（95%CI,0.86-7.37）。结论Aurora-A遗传变异Phe31Ile可能是我国神经母细胞瘤的遗传易感因素。 相似文献