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Zhuo X, Song J, Liao J, Zhou W, Ye H, Li Q, Xiang Z, Zhang X. Does CYP2E1 RsaI/PstI polymorphism confer head and neck carcinoma susceptibility?: A meta-analysis based on 43 studies. Medicine (Baltimore) 2016; 95:e5156. [PMID: 27787372 PMCID: PMC5089101 DOI: 10.1097/md.0000000000005156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Previous reports showed that CYP2E1 RsaI/PstI polymorphism may be a risk factor for cancers. Published meta-analyses in 2010 and 2011, respectively, on the relationship of CYP2E1 RsaI/PstI polymorphisms with the susceptibility to head and neck carcinoma (HNC) have generated inconsistent results. Thus, this study aimed to conduct an updated meta-analysis involving published studies up to Nov 2015 to get a more confidential result. METHODS Eligible studies up to Nov 2015 were retrieved and screened. Data were extracted and a quantitative meta-analysis was conducted. Subgroup analyses on ethnicity, source of controls, sample size, genotyping method, smoking status, and drinking status were also performed. RESULTS Forty-one publications including a total of 43 case-control studies were selected for analysis. The overall data under a homozygote comparison model indicated a significant association of CYP2E1 RsaI/PstI polymorphisms with HNC risk (c2c2 vs c1c1: odds ratio [OR] = 1.97; 95% confidence interval [CI] = 1.53-2.53). Similar results were observed in the Asian subgroup (c2c2 vs c1c1: OR = 1.98; 95%CI = 1.51-2.60; c2 vs c1: OR = 1.20; 95%CI = 1.03-1.39) and mixed population (c2 vs c1: OR = 1.41; 95%CI = 1.06-1.86) when the data were stratified by ethnicities. Interestingly, increased cancer risk only was shown among never-smokers (c2c2+c1c2 vs c1c1: OR = 1.44; 95%CI = 1.05-1.98) but not ever-smokers. CONCLUSION CYP2E1 RsaI/PstI polymorphisms may modify the susceptibility to HNC, particularly among Asians, mixed population, and never-smokers. Future large and well-designed studies are needed to verify this conclusion.
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Affiliation(s)
- Xianlu Zhuo
- Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing
- Affiliated Hospital of Guiyang Medical University, Guiyang
- Post-doctoral Scientific Research Station, Chongqing Cancer Institute, Chongqing, China
- Correspondence: Xianlu Zhuo and Xueyuan Zhang, Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing, China (e-mails: [Xianlu Zhuo]; [Xueyuan Zhang])
| | - Jue Song
- Affiliated Hospital of Guiyang Medical University, Guiyang
| | - Jian Liao
- Affiliated Hospital of Guiyang Medical University, Guiyang
| | - Wei Zhou
- Post-doctoral Scientific Research Station, Chongqing Cancer Institute, Chongqing, China
| | - Huiping Ye
- Affiliated Hospital of Guiyang Medical University, Guiyang
| | - Qi Li
- Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing
| | - Zhaolan Xiang
- Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing
| | - Xueyuan Zhang
- Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing
- Correspondence: Xianlu Zhuo and Xueyuan Zhang, Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing, China (e-mails: [Xianlu Zhuo]; [Xueyuan Zhang])
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Xie S, Luo C, Shan X, Zhao S, He J, Cai Z. CYP1A1 MspI polymorphism and the risk of oral squamous cell carcinoma: Evidence from a meta-analysis. Mol Clin Oncol 2016; 4:660-666. [PMID: 27073686 DOI: 10.3892/mco.2016.768] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 01/29/2016] [Indexed: 12/20/2022] Open
Abstract
Numerous case-control studies have investigated whether the CYP1A1 gene polymorphism is involved in the occurrence of oral squamous cell carcinoma (OSCC); however, the conclusions are inconsistent. In order to further explore the correlation and obtain a strong conclusion, a meta-analysis was performed to systematically assess the association between the CYP1A1 MspI polymorphism and risk of OSCC. In the present meta-analysis, the odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) were used to assess the association. The statistical analyses were performed with STATA 11.0 software. The heterogeneity was assessed by Q test and I2test. The final analysis included 10 studies of 1,505 cases and 1,967 controls. The overall results suggested that the CYP1A1 MspI polymorphism was significantly associated with an increased risk of OSCC (CC+TC vs. TT: OR, 1.31; 95% CI, 1.01-1.70; P=0.043; CC vs. TC+TT: OR, 2.38; 95% CI, 1.58-3.58; P<0.001; CC vs. TT: OR, 2.52; 95% CI, 1.60-3.96; P<0.001; and C vs. T: OR, 1.45; 95% CI, 1.15-1.83; P<0.001). In a stratified analysis by ethnicity, a statistically significant correlation existed in the Asian population, but not mixed-race and Caucasian populations. In conclusion, despite several limitations, the present meta-analysis established that the CYP1A1 MspI polymorphism may be a risk factor for OSCC, particularly among the Asian population.
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Affiliation(s)
- Shang Xie
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, P.R. China
| | - Chongdai Luo
- Guanghua School and Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong 510055, P.R. China
| | - Xiaofeng Shan
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, P.R. China
| | - Shushan Zhao
- Department of Orthopaedic Surgery, Xiangya Hospital, Changsha, Hunan 410008, P.R. China
| | - Jing He
- State Key Laboratory of Oncology in South China, Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Zhigang Cai
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, P.R. China
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Association between the CYP1A1 T3801C polymorphism and risk of cancer: Evidence from 268 case–control studies. Gene 2014. [DOI: 10.1016/j.gene.2013.10.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Khlifi R, Messaoud O, Rebai A, Hamza-Chaffai A. Polymorphisms in the human cytochrome P450 and arylamine N-acetyltransferase: susceptibility to head and neck cancers. BIOMED RESEARCH INTERNATIONAL 2013; 2013:582768. [PMID: 24151610 PMCID: PMC3787584 DOI: 10.1155/2013/582768] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/25/2013] [Accepted: 07/24/2013] [Indexed: 12/12/2022]
Abstract
The occurrence of head and neck cancer (HNC) is associated with smoking and alcohol drinking. Tobacco smoking exposes smokers to a series of carcinogenic chemicals. Cytochrome P450 enzymes (CYP450s), such as CYP1A1, CYP1B1, and CYP2D6, usually metabolize carcinogens to their inactive derivatives, but they occasionally convert the chemicals to more potent carcinogens. In addition, via CYP450 (CYP2E1) oxidase, alcohol is metabolized to acetaldehyde, a highly toxic compound, which plays an important role in carcinogenesis. Furthermore, two N-acetyltransferase isozymes (NATs), NAT1 and NAT2, are polymorphic and catalyze both N-acetylation and O-acetylation of aromatic and heterocyclic amine carcinogens. Genetic polymorphisms are associated with a number of enzymes involved in the metabolism of carcinogens important in the induction of HNC. It has been suggested that such polymorphisms may be linked to cancer susceptibility. In this paper, we select four cytochrome P450 enzymes (CYP1A1, CYP1BA1, CYP2D6, and CYP2E1), and two N-acetyltransferase isozymes (NAT1 and NAT2) in order to summarize and analyze findings from the literature related to HNC risk by focusing on (i) the interaction between these genes and the environment, (ii) the impact of genetic defect on protein activity and/or expression, and (iii) the eventual involvement of race in such associations.
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Affiliation(s)
- Rim Khlifi
- Research Unit on Toxicology and Environment, Sfax University, 3018 Sfax, Tunisia
- Bioinformatics Unit, Centre of Biotechnology of Sfax, Sfax University, 3018 Sfax, Tunisia
| | - Olfa Messaoud
- Biomedical Genomics and Oncogenetics Laboratory LR11IPT05, University of Tunis El Manar, 1002 Tunis, Tunisia
| | - Ahmed Rebai
- Bioinformatics Unit, Centre of Biotechnology of Sfax, Sfax University, 3018 Sfax, Tunisia
| | - Amel Hamza-Chaffai
- Research Unit on Toxicology and Environment, Sfax University, 3018 Sfax, Tunisia
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Ying HQ, Qi Y, Pu XY, Liu SR, A ZC. Association of GSTM1 and GSTT1 genes with the susceptibility to male infertility: result from a meta-analysis. Genet Test Mol Biomarkers 2013; 17:535-42. [PMID: 23631429 DOI: 10.1089/gtmb.2012.0409] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The deletion polymorphisms of the glutathione S-transferase M1 (GSTM1) and glutathione S-transferase T1 (GSTT1) genes were considered as candidates for genetic susceptibility factors of male infertility. Previous studies concerning the relationship between the null genotype of the two genes and male infertility have been reported in recent years. However, the results remain elusive. A meta-analysis was performed to estimate the relationship between the deletion polymorphism of the GSTM1 or GSTT1 gene, and male infertility in this study. Sixteen studies concerning the GSTM1 gene, including 2174 cases and 1861 controls, and 13 case-control studies on the GSTT1 gene with a total number of 1992 cases and 1617 controls were processed. The results showed that the null genotype of the GSTM1 gene was associated with male infertility in the overall populations (P=0.003, OR=1.40, 95%CI=1.12-1.75), especially in Caucasian (P=0.012, OR=1.50, 95%CI=1.09-2.07) as well as Chinese (P=0.001, OR=1.55, 95%CI=1.19-2.03). The null genotype of the GSTT1 gene was strongly related to male infertility only in Chinese (P=0.000, OR=1.70, 95%CI=1.34-2.14). These results indicated that the null genotype of the GSTM1 gene might contribute to the susceptibility of male infertility, whereas the null genotype of the GSTT1 gene may be a genetic susceptibility factor of male infertility for the Chinese.
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Affiliation(s)
- Hou-Qun Ying
- Department of Genetics, College of Agriculture and Biology, Dali University, China
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Zhang Y, Ni Y, Zhang H, Pan Y, Ma J, Wang L. Association between GSTM1 and GSTT1 allelic variants and head and neck squamous cell cancinoma. PLoS One 2012; 7:e47579. [PMID: 23077643 PMCID: PMC3471998 DOI: 10.1371/journal.pone.0047579] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 09/12/2012] [Indexed: 11/18/2022] Open
Abstract
Backgrounds GSTM1 and GSTT1 are involved in the detoxification of carcinogens such as smoking by-products, and polymorphisms in these two genes with a result of loss of enzyme activity may increase risk of carcinogenesis. Although many epidemiological studies have investigated the association between GSTM1 or GSTT1 null genotype and head and neck squamous cell carcinoma (HNSCC), the results remain conflicting. To elucidate the overall association of GSTM1, GSTT1 and HNSCC, we included all available studies and performed this meta-analysis. Methodology/Principal Findings A dataset including 42 articles for GSTM1, 32 articles for GSTT1, and 15 articles for GSTM1 and GSTT1 in combination were identified by a search in PubMed. Associations beween HNSCC and polymorphisms of GSTM1 and GSTT1 alone and in combination were analysed by software RevMan 5.1. Stratification analysis on ethnicity and smoking status, sensitivity analysis, heterogeneity among studies and their publication bias were also tested. Association was found in overall analysis between HNSCC and GSTM1 and GSTT1 null genotype. Stratified by ethnicity, we found increased risks of HNSCC in carriers with GSTM1 null genotype in Asian, GSTT1 null genotype in South American, and dual null genotype in European and Asian. When stratified by smoking, a more significant association of GSTM1 null genotype with HNSCC risk was observed in smokers. Conclusions/Significance This meta-analysis presented additional evidence of the association between GSTM1 and GSTT1 polymorphisms and HNSCC risk.
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Affiliation(s)
- Yang Zhang
- Institute of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuanyuan Ni
- Institute of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hao Zhang
- Institute of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yongchu Pan
- Institute of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Junqing Ma
- Institute of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail: (JM); (LW)
| | - Lin Wang
- Institute of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail: (JM); (LW)
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Lourenço GJ, Silva EFSN, Rinck-Junior JA, Chone CT, Lima CSP. CYP1A1, GSTM1 and GSTT1 polymorphisms, tobacco and alcohol status and risk of head and neck squamous cell carcinoma. Tumour Biol 2011; 32:1209-15. [PMID: 21870186 DOI: 10.1007/s13277-011-0224-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 08/10/2011] [Indexed: 12/15/2022] Open
Abstract
We examined the influence of the CYP1A1 A4889G and T6235C, GSTM1 and GSTT1 polymorphisms, involved in carcinogen metabolism, on the head and neck (HN) squamous cell carcinoma (SCC) risk. DNA from 142 HNSCC patients and 142 controls was analysed by polymerase chain reaction (PCR)-restriction fragment length polymorphism or multiplex-PCR for the polymorphisms analyses. Excesses of the CYP1A1 4889AG+GG and 4889AG+GG plus GSTT1 null genotype were seen in patients with heavy tobacco habit compared with controls (41.9% versus 26.8%, P = 0.03; 26.2% versus 10.3%, P = 0.04, respectively). Carriers of the referred genotypes and heavy tobacco consumption were under a 2.0-fold and 2.8-fold increased risks for HNSCC than others, respectively. The CYP1A1 6235TC+CC plus GSTM1 and GSTT1 null genotypes were more common in pharyngeal SCC patients than in controls (5.3% versus 0.7%, P = 0.04). Carriers of the combined genotype had 16.0-fold increased risk for the disease than others. The frequency of one null genotype of the GSTM1 or GSTT1 gene was higher in patients with pharyngeal SCC and heavy smoking status than in controls (76.3% versus 57.7%, P = 0.04). Carriers of the referred genotype and heavy tobacco status had a 2.4-fold increased risk for pharyngeal SCC than others. In contrast, the CYP1A1 6235TC+CC genotype was more common in controls than in laryngeal SCC patients (35.9% versus 21.6%, P = 0.01). Carriers of the genotype had a 0.2-fold decreased risk for the disease than others. Our data present preliminary evidence that inherited combined CYP1A1 A4889G and T6235C abnormalities and GSTM1 and GSTT1 pathways are important determinants of HNSCC, particularly pharyngeal SCC in heavy smoking individuals from south-eastern Brazil.
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Affiliation(s)
- Gustavo Jacob Lourenço
- Department of Internal Medicine, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
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