CYP1A1、GSTM1和GSTT1基因多态性与甘肃省武威市食管癌易感性的关系

目的探讨甘肃省武威市食管癌组织中生物代谢酶Ⅰ相酶细胞色素（CYPIA1）和Ⅱ相酶谷胱甘肽转硫酶MI（GSTM1）、谷胱甘肽硫转移酶TI（GSTT1）基因多态性与食管癌的关系。方法采用PCR-RFLP、multiplex—PCR方法检测216例正常对照f血液）和189例食管癌组织中代谢酶基因CYPIA1和GSTM1、GSTT1的多态性。结果食管癌病例组与正常对照组中：CYP1A1基因MspⅠ酶切位点多态性的频率分别为74．1％和67．6％,差异无统计学意义;GSTM1纯合缺失基因型分别占58．7％和41．2％,差异有统计学意义（P〈0．05）,该基因型可能与食管癌易感性的增高有关（OR1．956）;GSTT1纯合缺失基因型分别占51．9％和43．5％,差异无统计学意义,该基因未明显增加对食管癌的易感性（OR1．169）;GSTM1、GSTT1联合缺失基因型在病例组和对照组中的频率分别为38．6％和19．6％,差异有统计学意义（P〈0．05）;同时携带CYPIA1MspⅠ多态突变基因型与GSTM1、GSTT1缺失基因型的个体患食管癌的风险增加（OR2．385,95％CI1．094-3．495）。结论单独的CYP1A1MspI多态突变基因型或者GSTT1缺失基因型与食管癌的易感性不相关;GSTM1纯合缺失基因型及其与GSTT1缺失基因型、CYP1A1MspⅠ多态突变基因型同时存在可增加个体患食管癌的风险,提示GSTM1纯合缺失基因型可能为食管癌发病的易感因素之一,且与其他缺陷基因型存在协同作用。     

Glutathione S-transferase M1 and T1 genotypes and endometriosis risk: a case-controlled study

Objective To investigate the correlation between glutathione S-transferase (GST) M1 and T1 genotypes and endometriosis risk (EM). Methods Polymerase chain reaction (PCR) technique was used to detect the presence or absence of the GSTM1 and GSTT1 genes in genomic DNA isolated from the blood samples of 68 Han Chinese women with endometriosis and 28 without endometriosis. Results The frequencies of GSTM1 and GSTT1 null genotypes in women with endometriosis were 0.721 (49/68) and 0.779 (53/68), respectively, and in women without endometriosis were 0.429 (12/28) and 0.321 (9/28), respectively. There was a significant difference with regard to the frequencies of GSTM1 and GSTT1 null genotypes between the women with and without endometriosis (P<0.01). Furthermore, the frequencies of GSTM1 and GSTT1 null genotypes were significantly higher in the patients with stage Ⅲ and Ⅳ endometriosis ［0.731 (38/52) and 0.788 (41/52), respectively］ than in women without endometriosis (P<0.01), and the frequency of GSTT1 null genotype was statistically higher in patients with stage Ⅰ and Ⅱ endometriosis ［0.75 (12/16)］ than in the women without endometriosis (P<0.01). No correlation between GSTM1 and GSTT1 null genotypes and age, induced abortion or dysmenorrhea was detected in this study (P>0.05). Conclusion GSTM1 and GSTT1 null genotypes may be risk factors for the development of endometriosis.     

Polymorphism of Glutathione S-transferase T1,M1 and P1 Genes in a Shanghai Population: Patients With Occupational or Non-occupational Bladder Cancer

INTRODUCTION Glutathione S-transferases (GSTs, EC 2.5.1.18) catalyze the conjugation of endogenous reduced glutathione (GSH) with electrophilic center in the molecules of xenobiotics or their …     

谷胱甘肽S转移酶系基因多态性与非小细胞肺癌患者生存率的关系

目的　研究谷胱甘肽S转移酶系 (GSTs)基因多态性对非小细胞肺癌生存率的影响。方法　检测 5 70名非小细胞肺癌患者外周血淋巴细胞DNA上GSTs基因多态性。以回顾性队列研究的方法获得不同GSTs基因多态性对象肺癌治疗的生存结果 ,并用Kaplan Meier法和Cox回归分析探讨GSTs基因多态性对肺癌患者预后的影响。结果　接受化疗的肺癌患者GSTT1空白型基因与死亡的RR为 1.73,GSTT1和GSTM1均呈空白型基因的肺癌患者死亡的RR为 1.77,其中接受化疗的肺癌患者的RR为 2 .4 7。结论　GSTT1、GSTT1合并GSTM 1空白型基因与肺癌化疗后较低的生存率有关     

GSTM1、GSTT1基因多态性与中国人前列腺癌风险关系

目的检测谷胱甘肽巯基转移酶GSTM1、GSTT1基因多态性与中国人前列腺癌风险关系.方法收集重庆地区前列腺癌血标本81例,50岁以上对照组血标本90例,从外周血提取DNA,采用聚合酶链反应(PCR)分析GSTM1及GSTT1无效基因型分布频率.结果 GSTM1无效基因型在前列腺癌和对照组分布频率分别为 54.3%、44.4%,两组间无显著统计学差异(P=0.197,OR=1.486,95%CI为0.813～2.718);GSTT1无效基因型在前列腺癌和对照组中分布频率分别为53.1%和53.3%,两组间无显著统计学差异(P=0.974 ,OR=0.99,95%CI为0.543～1.807);GSTM1无效基因型合并GSTT1无效基因型在两组中的分布频率为30%.13.3%,两组间有显著差异(P=0.034,OR=2.314,95%CI为1.054～5.076).结论 GSTM1无效基因型合并GSTT1无效基因型与重庆地区前列腺癌发病明显关联.GSTM1、GSTT1无效基因型与前列腺癌发病风险间无明显相关.GSTM1、GSTT1基因多态性与前列腺癌分期、分级无关.     

Polymorphism of Glutathione S—transferaseT1,M1and P1Genes in a Shanghai Population：Patients With Occupational of Non—occupational Bladder Cancer

Objective Glutathione S-transferases are involved in the conjugation of xenobiotics. To explore whether GSTs polymorphisms are involved in the development of occupational or non-occupational bladder cancer, polymorphism frequencies of GSTT1, M1 and P1 were investigated in a normal population, which had been settled in a rural area in Shanghai suburb for at least 5 generations as well as in a group of patients with benzidine exposure related occupational bladder cancer in Shanghai dyestuff industry and a group of patients with non-occupational bladder cancer. Methods PCR based procedures were performed in the study populations to confirm the genotypes of GSTT1, M1 and P1. Results The polymorphisms at locus of GSTP1- A1578G in the normal population differed significantly from those in Caucasians or African Americans. All the subjects genotyped so far (n =118) bore only homogenous wild genotype (C2293/ C2293) at GSTP1 - C2293T locus. This locus seemed to be a monomorphic in Shanghai population. No significant difference in GSTT1 and GSTM1 polymorphic form frequencies could be confirmed among three groups of subjects. An overrepresentation of GSTP1 AG or GG genotype corresponding a less stable and less effective isozyme protein was detected in patients with benzidine related occupational bladder cancer, compared with that in the normal population though a statistical significance was not yet reached (P=0.09, OR=1.96, 95% CI 0.89-4.32,). Conclusion This study suggests that GSTM1 or GSTT1 homozygous deficiency genotypes and their combination do not have a clear impact on bladder cancer incidence in a Shanghai population. It seems that GSTP1 polymorphism is not associated with non-occupational bladder cancer. GSTP1 AG or GG genotype has a higher frequency in the patients with benzidine related occupational bladder cancer, and further work is needed to confirm if GSTP1 AG or GG genotype plays a role in the development of occupational bladder cancer.     

Genetic polymorphisms of glutathione S-transferase M1 and T1, and evaluation of oxidative stress in patients with non-small cell lung cancer

Background

Our objective is to investigate the genetic polymorphisms of the glutathione S-transferase M1 and T1 genes (GSTM1 and GSTT1) and evaluate oxidative damage in patients with non-small lung cancer (N-SCLC).

Methods

One hundred and ten patients with N-SCLC and 100 controls are included in this case-control study. Multiplex polymerase chain reaction (PCR) analyses were used to identify the genotypes. The activities of malondialdehyde (MDA) and nitric oxide (NO) and total antioxidant capacity (T-AOC) were detected by spectroscopic analysis.

Results

The frequencies of the GSTM1, T1, and GSTM1/T1 null genotypes in the patient group were significantly higher than that in the control group (OR = 2.071, P = 0.009; OR = 1.900, P = 0.024; OR = 3.258, P = 0.003). The activities of MDA and NO were significantly higher in the patient group than that in the control group (P <0.001), and T-AOC was significantly lower in patient group than that in control group (P <0.001). The activities of MDA, and NO were higher but the T-AOC was lower in patients with the GSTM1, T1 and M1/T1 null genotypes than those in patients with GSTM1, T1 and M1/T1 present genotypes (P <0.001).

Conclusions

Our results suggest that oxidative damage may be play a important role in patients with N-SCLC, and that GSTM1 and GSTT1 null genotypes may predispose the cells of patients with N-SCLC to increased oxidative damage.     

湖南地区人群GSTM1和GSTT1基因多态性与结直肠癌遗传易感性分析

目的 探讨代谢酶GSTM1和GSTT1基因多态性与湖南地区人群结直肠癌遗传易感性之间的关系.方法 采用以医院为基础的病例-对照研究,应用PCR方法对108例结直肠癌患者和215例正常人群的GSTM1和GSTT1基因型进行检测和分析.结果 GSTM1基因在结直肠癌组和对照组中的缺失率分别为64.8%和 48.8%,且两组之间差异具有统计学意义(P<0.05),以GSTM1(+)为参照,GSTM1(-)者结直肠癌发病风险增加2.6倍.GSTT1基因在结直肠癌组和对照组中的缺失率分别为55.6%和45.6%,两组之间差异无统计学意义(P>0.05).GSTM1和GSTT1基因型之间可能存在联合作用,同时携带GSTM1(-)和GSTT1(-)者比同时携带GSTM1(+)和GSTT1(+)者结直肠癌发病风险增加3.88倍.GSTM1(-)和GSTT1(-)与吸烟在结直肠癌的发病中具有协同作用,与不吸烟者比较,其OR值分别为7.76和6.24.结论 GSTM1基因缺失与本地区人群结直肠癌发病风险相关,GSTT1基因缺失与本地区人群结直肠癌发病风险无关,GSTM1和GSTT1同时缺失者结直肠癌发病风险更高,GSTM1和GSTT1基因缺失与吸烟在结直肠癌的发病中具有协同作用.     

重庆地区人群GSTT1和GSTM1基因多态性与结直肠癌易感性研究

目的　了解谷胱苷肽转硫酶GSTT1和GSTT1基因多态性与结直肠癌易感性的关系。方法　采用多重PCR技术对 82例病例和 82例对照GSTT1、GSTM1基因型进行了检测和分析。结果　GSTM1基因缺失频率在病例组和对照组之间有显著差异 (P <0 .0 1,OR =2 .464 ,95 %CI =1.3 11～ 4.63 3 )。GSTM1和GSTT1基因同时缺失的个体在病例组和对照组之间有差异 (P <0 .0 5 ,OR =2 .476,95 %CI =1.0 46～ 5 .861)。结论　GSTM1基因缺失可能是结直肠癌发生的易感基因型。GSTT1基因单独缺失与结直肠癌发生的危险性不相关 ,但在GSTM1缺失基础上再伴有GSTT1基因缺失的个体 ,患结直肠癌的危险性将会增加     

Genetic polymorphisms analysis of glutathione S-transferase M1 and T1 in children with acute lymphoblatic leukemia

Summary The relationship between glutathione S-transferases (GSTs) M1, T1 genotype and childhood acute lymphoblastic leukemia (ALL) was investigated. GSTM1 and GSTT1 genotypes in genomic DNA from 67 children with ALL and 146 healthy controls were analyzed by using the multiplex polymerase chain reaction (PCR). The frequencies of GSTM1, M1-T1 null genotypes in ALL children were significantly higher than in the healthy controls (76. 12% versus 52.74%. OR=2. 856.P<0.001: 50.74% versus 24.66%, OR=3.148,P<0.01, respectively). However, there was no significant relationship between GSTT1 null genotype and ALL of children (61.19% versus 49.32%. OR=1.621.P>0.05). It was suggested that GSTM1 null genotype might be a risk genotype of childhood ALL. While there as no correlation between GSTT1 null genotype and childhood ALL. Wang Jun, female, born in 1963, Professor     

GSTT1?GSTM1基因多态性与儿童急性淋巴细胞白血病早期治疗反应及化疗不良反应的关系

目的:研究谷胱甘肽硫转移酶(GSTs)家族中GSTT1?GSTM1基因多态性与儿童急性淋巴细胞白血病(ALL)早期治疗反应和化疗不良反应的关系?方法:筛选ALL患者98例,采用多重PCR技术分析GSTT1?GSTM1基因型,比较不同基因型患者早期治疗反应和发生化疗毒副作用的差异?结果:GSTT1基因缺失型患者早期治疗反应较GSTT1基因非缺失型患者好(OR=3.35,95%CI:1.05~10.73,P=0.041),GSTT1和GSTM1基因双非缺失型患者发生早期治疗反应差的风险明显高于GSTT1和GSTM1任一基因缺失型及双缺失型(OR=5.73,95%CI:1.73~18.95,P=0.004)?GSTM1基因缺失型患者发生口腔黏膜炎?肝功能异常及感染的风险高于GSTM1基因非缺失型患者(P < 0.05),GSTT1和GSTM1基因双缺失型患者发生肝功能异常及感染的风险明显高于两基因非双缺失型患者(P < 0.05)?结论:GSTT1和GSTM1基因型与ALL患者早期治疗反应及化疗不良反应发生率相关,GSTT1和GSTM1基因型有助于指导ALL患者个体化治疗方案的制定?     

Glutathione S-Transferase M1 and T1 Gene Polymorphisms Are Not Associated with Increased Risk of Gestational Diabetes Mellitus Development

Aim:

The aim of this study was to investigate whether the glutathione S-transferase M1 (GSTM1) and T1 (GSTT1) gene polymorphisms contributed to development of gestational diabetes mellitus (GDM).

Subjects and Methods:

Fifty women with diagnosis of GDM and 50 control individuals without GDM or altered glucose intolerance during their pregnancy were enrolled in the study. Multiplex polymerase chain reaction-restriction fragment length polymorphism method was applied to determine the GSTM1 and GSTT1 gene polymorphisms. Genotypes were determined according to bands detected with the agarose gel electrophoresis.

Results:

The difference in the frequencies of GSTM1 null genotypes between GDM and control groups was not statistically significant (60% and 54%, respectively). There was no statistically significant difference between GDM and control groups with respect to GSTT1 null genotype rates (22% and 20%, respectively).

Conclusion:

This study shows no association between GST gene polymorphisms and GDM.     

GSTT1、GSTM1、MDR1基因多态性与儿童急性淋巴细胞白血病易感性及化疗反应的关系

目的：研究谷胱甘肽硫转移酶基因GSTTl、GSTMl以及多药耐药基因MDRl多态性与儿童急性淋巴细胞白血病（ALL）化疗反应的关系。方法：筛选ALL患者100例,采用多重PCR技术分析GSTTl、GSTMl以及MDRl基因型,比较不同基因型患者化疗反应的差异。结果：GSTTl、GSTMl以及MDRl3种基因非缺失型个体发生ALL的风险明显高于GSTTl、GSTMl以及MDRl任一基因缺失型,GSTTl、GSTMl以及MDRl3种基因缺失型患者CR率较GSTTl、GSTMl以及MDRl基因非缺失型患者低,差异均有统计学意义（P〈0．05）。结论：GSTTl、GSTMl以及MDRl基因缺失型个体对ALL的易感性升高,化疗完全缓解率显著降低。GSTTl、GSTMl以及MDRl基因型检查有助于指导ALL儿童患者个体化治疗方案的制定。     

Genetic Polymorphisms Analysis of Glutathione S-transferase M1 and T1 in Children with Acute Lymphoblastic Leukemia

The relationship between glutathione S-transferases (GSTs) M1, T1 genotype and childhood acute lymphoblastic leukemia (ALL) was investigated. GSTM1 and GSTT1 genotypes in genomic DNA from 67 children with ALL and 146 healthy controls were analyzed by using the multiplex polymerase chain reaction (PCR). The frequencies of GSTM1, M1-T1 null genotypes in ALL children were significantly higher than in the healthy controls (76.12 ％ versus 52.74 ％, OR=2.856, P＜0. 001； 50. 74 ％ versus 24. 66 ％, OR=3. 148, P＜0. 001, respectively). However,there was no significant relationship between GSTT1 null genotype and ALL of children (61.19 % versus 49.32 %, OR=I. 621, P＞0.05). It was suggested that GSTM1 null genotype might be a risk genotype of childhood ALL, while there as no correlation between GSTT1 null genotype and childhood ALL.     

肺癌患者CYP1A1和GSTM1基因多态性检测

目的:探讨CYP1A1与GSTM1基因多态与支气管肺癌癌变的关系.方法:采用回顾性"病例-对照"方法和PCR-RFLP技术,对98例肺癌患者和136名体检健康者(对照组)进行CYP1A1与GSTM1基因多态性检测.结果:对照组和肺癌组CYP1A1 m1、GSTM1缺陷型等位基因频率分别为28%和43%、44%和61%,2组比较,差异有统计学意义(P＜0.05).CYP1A1(w1/m1、CYP1A1(m1/m1、GSTM1(缺陷型)基因型患肺癌的危险度分别升高3.18倍、2.72倍和2.16倍(P均＜0.05).GSTM1(缺陷型)和CYP1A1(w1/m1或CYP1A1(m1/m1基因型携带者患肺癌的危险度为5.62倍(P＜0.01.吸烟使GSTM1缺陷型携带者和CYP1A1 m1携带者肺癌的患病危险度较单一基因作用危险度显著增加(P＜0.05).结论:CYP1A1 m1和GSTM1缺陷型基因均是肺癌的危险因素,2者存在交互作用,且均与吸烟有协同作用.     

Relationship of GSTM1 and GSTT1 genetic variant and markers of oxidative stress and inflammation in smokers with coronary artery disease

Objective:To investigate the role of glutathione S-transferase (GST) genetic variants and markers of oxidative stress and inflammation in smoking-related coronary artery disease (CAD) patients. Methods:Five hundred and thirty-five Chinese CAD patients were successfully genotyped. Plasma total antioxidant status (TAOS), glutathione, C-reactive protein (CRP), fibrinogen(FIB) and white blood cell count (WBC) were determined to evaluate the oxidative stress and inflammatory response. Results: GSTM1-0/GSTT1-0 su...     

乳腺癌分子分型与GSTM1、GSTT1和GSTP1（rs1695）基因多态性的关系及意义

目的 探讨乳腺癌患者谷胱甘肽转硫酶M1 （GSTM1）、谷胱甘肽转硫酶T1（GSTT1）和谷胱甘肽转硫酶P1（GSTP1 rs1695）的基因多态性分布,并分析其与乳腺癌分子分型的关系.方法 应用多重PCR技术（M-PCR）和高分辨融解曲线技术（HRM）分析252例女性乳腺癌患者外周血中GSTM1、GSTT1和GSTP1 （rs 1 695）的基因多态性.结果 252例乳腺癌患者中,108例（42.9％）为GSTM1（＋）,144例（57.1％）为GSTM1（-）;178例（70.6％）为GSTT1（＋）,74例（29.4％）为GSTT1（-）;143例（56.7％）为GSTP1（rs1695） AA基因型,102例（40.5％）为GSTP1（rs1695） AG基因型,7例（2.8％）为GSTP1（rs1695） GG基因型.经Hardy-Weinberg遗传平衡检验,证实本研究入组病例GSTP1（rs1695）基因具有群体代表性（P＞0.05）;8例Cerb-B-2（2＋）和（2＋→3＋）者未行FJSH检测予以剔除,其中Luminal型占63.1％ （154/244）,三阴型占22.1％ （54/244）,Her-2过表达型占14.8％ （36/244）;GSTT1（-）在不同分子分型的乳腺癌人群中的分布不同,差异有统计学意义（P＜0.05）,而GSTM1和GSTP1（rs1695）基因多态性在各分子分型的乳腺癌人群中的分布差异无统计学意义（P＞0.05）.结论 GSTT1基因多态性与乳腺癌的分子分型有关,GSTT1（-）在三阴型乳腺癌中缺失率较低,其基因多态性可为分子分型下乳腺癌的异质性提供合理补充.     

细胞色素P4501A1、谷胱甘肽转硫酶基因多态性与儿童急性淋巴细胞白血病的相关性研究

目的 探讨生物代谢酶细胞色素P4501A1、谷胱甘肽转硫酶M1、T1基因多态性与儿童急性淋巴细胞白血病（ALL）的相关性。方法采用病例对照研究方法,应用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术对89例儿童ALL患儿以及90名健康对照者的CYP1A1MspI多态（T264C）、GSTMI和GSTT1等基因的多态分布进行分析。结果儿童ALL组的CYP1A1基因MspI多态纯合子突变型（C型）的频率与对照组差异有统计学意义（P〈0．05）,携带纯合子突变型的儿童患ALL的危险度比杂合子突变型（B型）与野生型（A型）儿童的高（OR=1．997,95％CI：1．024—3．896）。GSTM1缺失型分布频率与对照组相比差异有统计学意义（P〈0．05,OR=2．709,95％CI：1．427-5．146）,GSTT1缺失型分布频率与对照组相比差异无统计学意义（P〉0．05）。同时携带CYPIA1C型、GSTM1、GSTT1缺失型的联合基因型儿童患ALL的风险增加（DR=2．235,95％CI：1．111-4．497）。结论CYP1A1基因MspI多态纯合子突变型（c型）、GSTM1缺失型与儿童ALL的易感性可能相关,GSTT1缺失型与儿童ALL易感性可能不相关;同时携带CYP1A1C型与GSTM1、GSTT1缺失基因型可能是儿童ALL发病的易感因素之一。     

Human GSTs polymorphisms in the Hakka population of south China and their associations with family history of several chronic diseases

Objective To investigate the associations of genetic polymorphisms in GSTs genes of the Hakka population of south China with family histories of certain chronic diseases.Methods Five hundred and thirty‐nine healthy Hakka natives of Meizhou city of Guangdong province in south China were involved.The genotypes of GSTM1,GSTT1,GSTP1,GSTM3,and GSTA1 were determined using PCR and restriction fragment length polymorphism analysis.The observed polymorphisms were analyzed by Chi‐square and Hardy‐Weinberg equilibrium...     

华南女性人群CYP1A1、GSTM、GSTT基因型频率调查

目的 调查华南女性人群CYP1A1 MspⅠ位点、I462V位点及GSTM、GSTT的基因型频率.方法 选择2008-2011年间在深圳市妇幼保健院、佛山市妇幼保健院分娩的1355例孕产妇为研究对象,采用PCR-RFLP法对所得基因组DNA进行基因分型,以SPSS13.0对具有不同特征的人群的基因型构成进行比较.结果 华南女性人群Msp ⅠT、C等位基因频率为61.2％、38.8％,I462V位点A、T等位基因频率为71％、29％,均满足Hardy-Weinberg平衡,CYP1A1 Msp Ⅰ位点TT、TC、CC基因型分布为39.4％、43.5％、17.1％,I462V位点AA、AG、GG基因型分布为52.2％、37.6％ 10.2％,Ⅱ相代谢酶基因GSTM存在型占50.3％,缺失型占49.7％,GSTT存在型占49.5％,缺失型占50.5％.Msp Ⅰ位点、I462V位点纯合突变联合GSTM、GSTT缺失型的肺癌高风险个体有121人,占调查人群的8.93％.结论 CYP1A1 MspⅠ位点、I462V位点在华南女性人群中具有较高突变频率,GSTM、GSTT基因在华南女性人群中具有很高的缺失率.MspⅠ位点、I462V位点纯合突变联合GSTM、GSTT缺失型的肺癌高风险人群在华南女性人群中所占比重较大.CYP1A1 Msp Ⅰ位点、I462V位点、GSTM、GSTT的基因型分布可能存在地区及种族差异.