共查询到19条相似文献,搜索用时 140 毫秒
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[目的]探讨胃食管反流病(GERD)中医证型与谷胱甘肽转硫酶P1(GSTP1)基因多态性之间是否存在关联。[方法]选择85例GERD患者和15例健康对照者,通过PCR-RFLP方法检测GSTP1基因型。[结果]GERD患者GSTP1突变型基因的比例明显高于健康人群(P<0.05);其在Barrett食管(BE)中的比例高于反流性食管炎(RE)及非糜烂性食管炎(NERD)(P<0.05,<0.05);GSTP1基因多态性在RE中的分布差异无统计学意义(P>0.05);GSTP1基因多态性在GERD各中医证型中的分布差异无统计学意义(P>0.05)。[结论]GSTP1基因多态性可能是GERD发生的遗传易感因素,与BE关系密切,但与本病中医证型分布无明显关联。 相似文献
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背景:谷胱甘肽转硫酶(GST)属Ⅱ相代谢酶,能催化亲电子底物与谷胱甘肽结合而排出体外。溃疡性结肠炎(UC)为复杂的多基因遗传性疾病,其发病机制至今不明。目的:探讨GSTM1基因多态性与UC易感性的关系。方法:采用聚合酶链反应(PCR)检测68例UC患者和140名健康对照者的GSTM1基因型,分析两组间GSTM1基因型分布频率的差异。结果:UC组GSTM1(-)基因型的分布频率显著高于健康对照组(63.2%对45.0%,P=0.014)。根据病变范围对UC组行分层分析,发现远端UC组GSTM1(-)基因型的分布频率显著高于广泛UC组(72.7%对45.8%。P=0.028)。结论:GSTM1基因多态性与UC易感性明显相关。 相似文献
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细胞色素P450 2E1和谷胱甘肽转硫酶P1基因的多态性与食管癌的易感性 总被引:3,自引:0,他引:3
我国是食管癌高发国家之一,食管癌的发生与环境致癌物有关。但并非所有暴露于致癌物者最后都发生食管癌。提示个体易感性差异所起的重要作用。 前致癌物进入人体后,需经过Ⅰ相代谢酶的活化或转化,才可被Ⅱ相代谢酶解毒。Ⅰ相代谢酶主要由细胞色素 相似文献
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目的:探讨谷胱甘肽转硫酶(GST)T1基因型与中国浙江汉族人群溃疡性结肠炎(UC)易感性的关系.方法:应用聚合酶链反应技术检测99例溃疡性结肠炎(UC)患者和140例健康对照中的GSTT1基因型,采用χ2检验,分析比较GSTT1基因型在UC患者和健康人群中的分布差异.结果:GSTT1(-)基因型频率在UC组和对照组分布有显著性差异(64.7% vs 47.1%,P=0.007,OR=2.050,95%CI:1.208-3.480);根据UC临床特征进一步分层分析,GSTT1(-)基因型在远端UC中的分布频率高于广泛结肠UC(71.8%vs 31.3%,P=0.002);GSTT1(-)基因型与UC病情严重程度无关(P>0.05).结论:GSTT1基因型与中国浙江汉族人群UC相关. 相似文献
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目的探 讨汉族人群溃疡性结肠炎(UC)易感性与谷胱甘肽转硫酶(GST)PI基因型的关系。方法用聚合酶链反应技术(PCR)检测76例溃疡性结肠炎(UC)和140例健康人群的GSTPI基因型,采用X^2检验,分析比较GSTPI基因型频率在UC组和健康对照组之间的分布差异。结果GSTPI基因VaL/VaL基因型频率在UC组中明显增高,有统计学差异(48.7%vs34.3%,P=0.039);根据临床特征对UC组和进行分层分析,发现VaL/VaL基因型在远端UC中的分布频率高于广泛结肠UC(P=0.017)。结论 GSTPI基因型与中国汉族人群UC的易感性相关。 相似文献
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胃食管反流与反流性食管炎 总被引:4,自引:0,他引:4
李宗明 《国外医学:内科学分册》1993,20(2):50-51
胃食管反流(gastroesophageal reflux,GER)主要由于食管下端括约肌(lower esophagealsphincter,LES)松弛,引起胃内容物反流入食管下段。这种现象可属生理性,常于正常人餐后出现,但因反流量不多,时间短暂,反流物即被清除回至胃内,并不致病。当有 LES 功能不良,导致频繁的 GER,量多且较持久时,可损伤食管下段粘膜而形成反流性食管炎,并能产生食管溃 相似文献
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Genetic polymorphisms in glutathione S-transferases T1, M1 and P1 and susceptibility to reflux esophagitis 总被引:3,自引:0,他引:3
B. Liu Y.-J. Fan M.-L. Wang X.-D. Lü J.-L. Jiang T.-Y. Wang Z.-M. Fan J.-K. Wang L. D. Wang 《Diseases of the esophagus》2006,19(6):477-481
Recent studies indicate that the prevalence of reflux esophagitis (RE) in China is increasing. RE is one of the most common esophageal complications associated with gastroesophageal reflux disease (GERD) and RE-Barrett's esophagus-esophageal adenocarcinoma (EAC) sequence has been considered as an histogenesis model for EAC in Western countries. RE is only present in a subset of patients with GERD, suggesting an altered susceptibility to RE may exist in these GERD individuals. However, the genetic changes related with high susceptibility to RE is largely unknown. The polymorphisms in glutathione S-transferases (GSTs) T1, M1 and P1 have been reported with high susceptibity to esophageal cancer in Chinese people. The present case-control study was thus undertaken to characterize the genetic polymorphisms of GSTs and their correlation with susceptibility to RE. One hundred and nine patients with RE, 97 patients with nonerosive reflux disease (NERD) and 97 normal controls were recruited in this study. All the subjects were from Beijing, China, and received endoscopic examination and questionnaires for RE. Genomic DNA was extracted from the lymphocytes of peripheral blood for each subject. Genotypes of the GSTM1 and GSTT1 genes were analyzed by a multiplex PCR method. A-->G polymorphism of codon 104 of the GSTP1 gene was detected using PCR-based restriction fragment length polymorphisms (RFLP). The variant GSTP1 genotypes (*A/*Bomicron*B/*B) was found with a high frequency in the case with RE (40%), and followed by NERD (25%) and normal control (22%). The differences were statistically significant (P < 0.05). The risk for RE increased 2.42-fold [odds ratio (OR); 95% confidence interval (95% CI), 2.42 (1.22-4.80)] in the subjects with variant GSTP1 genotype. The subjects with positive variant GSTP1 genotypes and negative H. pylori infection showed increasing tendency for risk of RE [OR (95% CI), 2.67 (1.06-6.70)]. However, the subjects with GSTT1 and GSTM1 polymorphisms did not show any correlation with high risk for RE or NERD. No significant interactions were identified between the variant GSTs and cigarette smoking, or alcohol drinking and subtype of RE. The present result suggests that GSTP1 genetic polymorphism may be one of the high susceptibility factors involved in the mechanisms of RE. H. pylori infection may play a protective role against RE. 相似文献
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目的本研究探讨谷胱甘肽硫转移酶(GST)PI启动子CpG岛甲基化与肝细胞肝癌(HCC)的关系。方法用甲基化特异性PCR技术检测53例HCC肿瘤组织及其癌旁非肿瘤组织中,GSTP1基因启动子CpG岛甲基化状况。结果GSTP1基因在HCC肿瘤组织中的甲基化率显著高于癌旁非肿瘤组织(X^2=19.08,P〈0.001),在Ⅲ-Ⅳ期肿瘤中的甲基化率显著高于Ⅰ-Ⅱ期肿瘤(X^2=4.84,P=0.028),在不同大小的肿瘤之间、单个结节与多个结节的肿瘤之间以及包膜完整的肿瘤与包膜不完整的肿瘤之间甲基化率的差异均无显著性。结论GSTP1启动子CDG岛甲基化可能参与肝细胞的痛性转变。 相似文献
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谷胱甘肽硫转移酶M1和T1基因多态性与燃煤型砷中毒发病的关系 总被引:6,自引:0,他引:6
目的探讨谷胱甘肽硫转移酶M1和T1(GSTM1、GSTT1)基因多态性与燃煤污染型砷中毒发病风险的关系。方法采用多重等位基因特异聚合酶链反应技术检测贵州省130名燃煤型砷中毒患者及140名健康个体的GSTM1和GSTT1基因多态性,并分析不同基因型与砷中毒发病的关系。结果砷中毒病例组和对照组GSTT1纯合缺失基因型(GSTT1^(-/-))的频率分别为58.5%和45.0%,组间比较差异有统计学意义(Х^2=6.246,P〈0.05);携带GSTT1^(-/-)基因型个体发生砷中毒的风险是携带GSTT1非纯合缺失基因型(GSTT1^(+/+)or(-/-))个体的2.18倍[比值比(OR)adj=2.18,95%可信区间(CI):1.183~4.018]。砷中毒病例组和对照组间GSTM1纯合缺失基因型(GSTM1^(-/-))频率的差异无统计学意义(P〉0.05)。基因型联合分析显示:携带GSTM1^(-/-)和GSTT1^(-/-)联合基因型的个体,其砷中毒的发病风险显著增加(ORadj=2.931,95%CI:1.024~8.387)。结论GSTT1^(-/-)基因型可能是燃煤型砷中毒发生的重要危险内因之一。 相似文献
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目的 探讨谷胱甘肽硫转移酶(GST)P1活性及基因多态、启动子甲基化与肝细胞肝癌(HCC)的关系.方法 紫外分光光度法检测HCC肿瘤细胞和癌旁肝细胞胞质中GSTP1活性,用甲基化特异性PCR技术检测GSTP1甲基化,PCR-RFLP技术检测53例HCC患者和74例健康人外周血基因组GSTP1基因多态性.结果 GSTP1三种基因型频率在病例组与对照组间差异无统计学意义(χ^2=0.84,v=2,P=0.656).GSTP1甲基化率在肿瘤组织与癌旁组织间差异有统计学意义(χ^2=19.08,P<0.01),在Ⅲ~Ⅳ期肿瘤中的频率显著高于Ⅰ~Ⅱ期肿瘤(χ^2=4.84,P=0.028).HCC肿瘤细胞胞质中GSTP1活性显著低于癌旁肝细胞(t=2.49,P=0.014),Ⅰ~Ⅱ期肿瘤胞质中GSTP1活性显著高于Ⅲ~Ⅳ期肿瘤(t=2.31,P=0.025),GSTP1甲基化的肿瘤细胞胞质中GSTP1活性显著低于未甲基化的肿瘤细胞(t=3.50,P=0.001).结论 由GSTP1基因甲基化引起的GSTP1活性下降可能与肝细胞的癌性转变有关. 相似文献
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反流性食管炎患者内镜表现与反流程度的关系 总被引:5,自引:0,他引:5
目的 确定反流性食管炎内镜观察结果与胃食管反流严重程度之间的相关性。方法 有典型胃食管反流症状者54例,全部接受内镜检查,其中无食管炎29 例,无并发症的食管炎25 例;通过对内镜下粘膜表现、食管测压、24 小时食管pH 监测的观察结果进行相关分析。结果 食管粘膜内镜下白色渗出物的出现、损害的范围与胃食管反流的严重程度有显著的相关性,无白色渗出物的红色损害也与病理性胃食管反流相关。下食管括约肌静息压、下食管括约肌一过性松弛率、食管中下段蠕动波传导速度、异常收缩发生率均有显著异常(P< 0.01)。pH< 4的总时间% 在有粘膜红色损害、白色损害和融合损害的患者中分别为6.4% 、9.9% 、34.0% (P< 0.01)。结论 内镜所见食管粘膜红色损害与病理性胃食管反流明显相关,白色损害与较严重的反流相关,损害范围与反流平均时间相关。在反流性食管炎诊断的分类中,除损害区出现白色渗出物和损害的范围是重要的观察指标外,红色损害也值得观察 相似文献
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反流性食管炎患者症状与睡眠障碍的研究 总被引:1,自引:0,他引:1
目的探讨反流性食管炎患者的症状与睡眠障碍的关系。方法对我院2006年1月~2006年12月经内镜检查确诊为反流性食管炎且排除胃肠道手术史及严重肝、肾、心脑血管病患者共172例,男136例,女36例,平均(56.7±15.8)岁,进行睡眠情况的调查。应用CHISS统计软件对反流性食管炎患者的症状与睡眠障碍的发生及睡眠障碍的表现等资料进行秩和检验、单因素方差分析和逐步回归分析。结果172例反流性食管炎患者合并睡眠障碍者58例,占33.72%。单因素分析提示夜间烧心、夜间反流、夜间或晨起醒来伴有烧心和(或)反流症状,每周夜间烧心反流次数及症状受睡眠体位影响足睡眠障碍的相关因素(P〈0.01);胸痛与睡眠维持障碍和日间残留效应相关(P〈0.05),咳嗽与睡眠潜伏期长显著相关(P〈0.01)。逐步回归分析提尔夜间反流症状、夜间或晨起醒来伴有烧心和(或)反流症状,以及每周夜间烧心反流次数对睡眠障碍的发生有显著性意义(P〈0.01)。结论反流性食管炎患析的夜间反流症状、频度及醒来即伴随烧心反流症状与睡眠障碍有关。 相似文献
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AIM: To assess the prevalence of laryngopharyngeal reflux (LPR) in patients with reflux esophagitis and disclose factors contributing to the development of LPR.
METHODS: A total of 167 patients who proved to have reflux esophagitis by endoscopy were enrolled. They received laryngoscopy to grade the reflux findings for the diagnosis of LPR. We used validated questionnaires to identify the presence of laryngopharyngeal symptoms, and stringent criteria of inclusion to increase the specificity of laryngoscopic findings. The data of patients were analyzed statistically to find out factors related to LPR.
RESULTS: The prevalence rate of LPR in studied subjects with reflux esophagitis was 23.9%. Age, hoarseness and hiatus hernia were factors significantly associated with LPR. In 23 patients with a hiatus hernia, the group with LPR was found to have a lower trend of esophagitis grading.
CONCLUSION: Laryngopharyngeal reflux is present in patients with reflux esophagitis, and three predicting factors were identified. However, the development of LPR might be different from that of reflux esophagitis. The importance of hiatus hernia deserves further study. 相似文献
METHODS: A total of 167 patients who proved to have reflux esophagitis by endoscopy were enrolled. They received laryngoscopy to grade the reflux findings for the diagnosis of LPR. We used validated questionnaires to identify the presence of laryngopharyngeal symptoms, and stringent criteria of inclusion to increase the specificity of laryngoscopic findings. The data of patients were analyzed statistically to find out factors related to LPR.
RESULTS: The prevalence rate of LPR in studied subjects with reflux esophagitis was 23.9%. Age, hoarseness and hiatus hernia were factors significantly associated with LPR. In 23 patients with a hiatus hernia, the group with LPR was found to have a lower trend of esophagitis grading.
CONCLUSION: Laryngopharyngeal reflux is present in patients with reflux esophagitis, and three predicting factors were identified. However, the development of LPR might be different from that of reflux esophagitis. The importance of hiatus hernia deserves further study. 相似文献