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Attafi IM, Bakheet SA, Ahmad SF, Belali OM, Alanazi FE, Aljarboa SA, Al-Alallah IA, Korashy HM. Lead Nitrate Induces Inflammation and Apoptosis in Rat Lungs Through the Activation of NF-κB and AhR Signaling Pathways. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:64959-64970. [PMID: 35482242 PMCID: PMC9481511 DOI: 10.1007/s11356-022-19980-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 03/25/2022] [Indexed: 05/28/2023]
Abstract
Lead (Pb) is one of the most frequent hazardous air contaminants, where the lungs are particularly vulnerable to its toxicity. However, the Pb distribution and its impact on lung inflammation/apoptosis and particularly the involvement of nuclear factor kappa B (NF-κB) and aryl hydrocarbon receptor (AhR) signaling pathways in Pb-induced lung toxicity have not yet been fully investigated. Adult male Wistar albino rats were exposed to Pb nitrate 25, 50, and 100 mg/kg b.w. orally for 3 days. The histopathological changes of several rat organs were analyzed using hematoxylin and eosin staining. The concentrations of Pb ion in different organ tissues were quantified using inductive coupled plasma mass spectrometry, while gas chromatography-mass spectrometry was used to identify organic compounds. The changes in the mRNA and protein expression levels of inflammatory and apoptotic genes in response to Pb exposure were quantified by using RT-PCR and Western blot analyses, respectively. Treatment of rats with Pb for three consecutive days significantly increased the accumulation of Pb in lung tissues causing severe interstitial inflammation. Pb treatment also increased the percentage of lung apoptotic cells and modulated apoptotic genes (Bc2, p53, and TGF-α), inflammatory markers (IL-4, IL-10, TNF-α), and oxidative stress biomarkers (iNOS, CYP1A1, EphX) in rat lung tissues. These effects were associated with a significant increase in organic compounds, such as 3-nitrotyrosine and myeloperoxidase, and some inorganic elements, such as selenium. Importantly, the Pb-induced lung inflammation and apoptosis were associated with a proportional increase in the expression of NF-κB and AhR mRNAs and proteins. These findings clearly show that Pb induces severe inflammation and apoptosis in rat lungs and suggest that NF-κB and AhR may play a role in Pb-induced lung toxicity.
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Affiliation(s)
- Ibraheem M Attafi
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
- Poison Control and Medical Forensic Chemistry Center, Jazan Health Affairs, Jazan, Saudi Arabia
| | - Saleh A Bakheet
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Sheikh F Ahmad
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Osamah M Belali
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
- Aseer Central Hospital, Asser health affairs, Ministry of Health, Abha, Saudi Arabia
| | - Fawaz E Alanazi
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
- Security Forces Hospital Program, Riyadh, Saudi Arabia
| | - Suliman A Aljarboa
- Central Laboratory, Research Center, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Ibrahim A Al-Alallah
- Pathology and Clinical Laboratories Medicine, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Hesham M Korashy
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
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Walia HK, Singh N, Sharma S. Genetic polymorphisms in the mEH gene in relation to tobacco smoking: role in lung cancer susceptibility and survival in north Indian patients with lung cancer undergoing platinum-based chemotherapy. Future Oncol 2021; 17:4925-4946. [PMID: 34672683 DOI: 10.2217/fon-2021-0412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: Epoxide hydrolase is involved in oxidative defenses and is responsible for the activation of carcinogens. The relationship between EPHX1 polymorphisms (Tyr113His and His139Arg) and overall survival (OS) and lung cancer (LC) risk was investigated. Methods: The study comprised 550 cases and 550 controls. Genotyping and statistical analysis were applied. Results: The variant genotypes of EPHX1 polymorphisms exhibited no association with LC risk. The Tyr113His polymorphism exhibited twofold increased odds of lymph node invasion (p = 0.04). The Tyr/His genotype is a risk factor for smokers. Subjects carrying the combined genotype for His139Arg showed better median survival time (MST) and the heterozygous genotype revealed better MST in the case of small-cell lung cancer (SCLC; 11.30 vs 6.73 months; log-rank test: p = 0.02). The heterozygous genotype (His139Arg) had longer MST in patients receiving cisplatin/carboplatin and irinotecan (11.30 vs 7.23; log-rank test: p = 0.007) Conclusion: The Tyr113His polymorphism is associated with LC risk in smokers and is a potential prognostic factor for OS in patients with SCLC after irinotecan.
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Affiliation(s)
- Harleen Kaur Walia
- Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala 147004, India
| | - Navneet Singh
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh 160012, India
| | - Siddharth Sharma
- Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala 147004, India
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Cheng H, Huang C, Tang G, Qiu H, Gao L, Zhang W, Wang J, Yang J, Chen L. Emerging role of EPHX1 in chemoresistance of acute myeloid leukemia by regurlating drug‐metabolizing enzymes and apoptotic signaling. Mol Carcinog 2019; 58:808-819. [DOI: 10.1002/mc.22973] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/27/2018] [Accepted: 01/07/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Hui Cheng
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Chongmei Huang
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Gusheng Tang
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Huiying Qiu
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Lei Gao
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Weiping Zhang
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Jianmin Wang
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Jianmin Yang
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
| | - Li Chen
- Institute of HematologyChanghai HospitalNaval Medical UniversityShanghaiChina
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Liu C, Cui H, Gu D, Zhang M, Fang Y, Chen S, Tang M, Zhang B, Chen H. Genetic polymorphisms and lung cancer risk: Evidence from meta-analyses and genome-wide association studies. Lung Cancer 2017; 113:18-29. [PMID: 29110844 DOI: 10.1016/j.lungcan.2017.08.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/18/2017] [Accepted: 08/25/2017] [Indexed: 01/30/2023]
Abstract
A growing number of studies investigating the association between Single Nucleotide Polymorphisms (SNPs) and lung cancer risk have been published since over a decade ago. An updated integrative assessment on the credibility and strength of the associations is required. We searched PubMed, Medline, and Web of Science on or before August 29th, 2016. A total of 198 articles were deemed eligible for inclusion, which addressed the associations between 108 variants and lung cancer. Among the 108 variants, 63 were reported to be significantly associated with lung cancer while the remaining 45 were reported non-significant. Further evaluation integrating the Venice Criteria and false-positive report probability (FPRP) was performed to determine the strength of cumulative epidemiological evidence for the 63 significant associations. As a result, 15 SNPs on or near 12 genes and one miRNA with strong evidence of association with lung cancer risk were identified, including TERT (rs2736098), CHRNA3 (rs1051730), AGPHD1 (rs8034191), CLPTM1L (rs401681 and rs402710), BAT3 (rs3117582), TRNAA (rs4324798), ERCC2 (Lys751Gln), miR-146a2 (rs2910164), CYP1B1 (Arg48Gly), GSTM1 (null/present), SOD2 (C47T), IL-10 (-592C/A and -819C/T), and TP53 (intron 6). 19 SNPs were given moderate rating and 17 SNPs were rated as having weak evidence. In addition, all of the 29 SNPs identified in 12 genome-wide association studies (GWAS) were proved to be noteworthy based on FPRP value. This review summarizes and evaluates the cumulative evidence of genetic polymorphisms and lung cancer risk, which can serve as a general and useful reference for further genetic studies.
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Affiliation(s)
- Caiyang Liu
- Department of Cardiothoracic Surgery, First Affiliated Hospital of Chongqing Medical University, No.1, Youyi Road, Yuzhong District, Chongqing 400010, China
| | - Huijie Cui
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Dongqing Gu
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Min Zhang
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Yanfei Fang
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Siyu Chen
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Mingshuang Tang
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Ben Zhang
- Division of Noncommunicable Disease Epidemiology, First Affiliated Hospital and Southwest School of Medicine, Third Military Medical University, Chongqing 400038, China
| | - Huanwen Chen
- Department of Cardiothoracic Surgery, First Affiliated Hospital of Chongqing Medical University, No.1, Youyi Road, Yuzhong District, Chongqing 400010, China.
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Weighted gene co-expression network analysis of pneumocytes under exposure to a carcinogenic dose of chloroprene. Life Sci 2016; 151:339-347. [PMID: 26916823 DOI: 10.1016/j.lfs.2016.02.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 02/16/2016] [Accepted: 02/20/2016] [Indexed: 02/06/2023]
Abstract
AIMS Occupational exposure to chloroprene via inhalation may lead to acute toxicity and chronic pulmonary diseases, including lung cancer. Currently, most research is focused on epidemiological studies of chloroprene production workers. The specific molecular mechanism of carcinogenesis by chloroprene in lung tissues still remains obscure, and specific candidate therapeutic targets for lung cancer are lacking. The present study identifies specific gene modules and valuable hubs associated with lung cancer. MAIN METHODS We downloaded the dataset GSE40795 from the Gene Expression Omnibus (GEO) and divided the dataset into the non-carcinogenic dose chloroprene exposed mice group and the carcinogenic dose chloroprene exposed mice group. With a systemic biological view, we discovered significantly altered gene modules between the two groups and identified hub genes in the carcinogenic dose exposed group using weighted co-expression network analysis (WGCNA). KEY FINDINGS A total of 2434 differentially expressed genes were identified. Twelve gene modules with multiple biological activities were related to the carcinogenesis of chloroprene in lung tissue. Seven hub genes that were critical for the carcinogenesis of chloroprene in lung tissue were ultimately identified, including Cftr, Hip1, Tbl1x, Ephx1, Cbr3, Antxr2 and Ccnd2. They were implicated in inflammatory response, cell transformation, gene transcription regulation, phase II detoxification, angiogenesis, cell adhesion, motility and the cell cycle. SIGNIFICANCE The seven hub genes may become valuable candidates for risk assessment biomarkers and therapeutic targets in lung cancer.
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Wang YD, Yang HY, Liu J, Wang HY. Updated meta-analysis of the association between CYP2E1 RsaI/PstI polymorphisms and lung cancer risk in Chinese population. Asian Pac J Cancer Prev 2015; 15:5411-6. [PMID: 25040958 DOI: 10.7314/apjcp.2014.15.13.5411] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A number of studies have reported relationships of CYP2E1 RsaI/PstI polymorphisms with susceptibility to lung cancer in Chinese population. However, the epidemiologic results have been conflictive rather than conclusive. The purpose of this study was to address the associations of CYP2E1 RsaI/PstI polymorphisms with lung cancer risk in Chinese population comprehensively. MATERIALS AND METHODS Systematic searches were conducted in the PubMed, Science Direct, Elsevier, CNKI and Chinese Biomedical Literature Databases. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to estimate the strength of association. RESULTS Overall, we observed a decreased lung cancer risk among subjects carrying CYP2E1 RsaI/PstI c1/ c2 and c1/c2+c2/c2 genotypes (OR=0.76, 95%CI: 0.64-0.90 and OR=0.78, 95%CI: 0.66-0.93, respectively), as compared with subjects carrying the c1/c1 genotype. In subgroup analysis, we observed a decreased lung cancer risk among c1/c2 carriers in hospital-based studies (OR=0.81, 95%CI: 0.68-0.98) and among carriers with c1/ c2 and c1/c2+c2/c2 genotypes in population-based studies(OR=0.57, 95%CI: 0.42-0.79 and OR=0.58, 95%CI: 0.43-0.79, respectively), as compared with subjects carrying the c1/c1 genotype. Limiting the analysis to studies with controls in Hardy-Weinberg equilibrium (HWE), we similarly observed a decreased lung cancer risk among c1/c2 and c1/c2+c2/c2 carriers (OR=0.73, 95%CI: 0.60-0.88 and OR=0.73, 95%CI: 0.60-0.88, respectively), as compared with c1/c1. CONCLUSIONS Our results suggested that CYP2E1 RsaI/PstI c1/c2 and c1/c2+c2/c2 variants might be a protective factor for developing lung cancer in Chinese population. Further well-designed studies with larger sample size are required to verify our findings.
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Affiliation(s)
- Ya-Dong Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, China E-mail :
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El-Sherbeni AA, El-Kadi AOS. The role of epoxide hydrolases in health and disease. Arch Toxicol 2014; 88:2013-32. [PMID: 25248500 DOI: 10.1007/s00204-014-1371-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 09/11/2014] [Indexed: 01/09/2023]
Abstract
Epoxide hydrolases (EH) are ubiquitously expressed in all living organisms and in almost all organs and tissues. They are mainly subdivided into microsomal and soluble EH and catalyze the hydration of epoxides, three-membered-cyclic ethers, to their corresponding dihydrodiols. Owning to the high chemical reactivity of xenobiotic epoxides, microsomal EH is considered protective enzyme against mutagenic and carcinogenic initiation. Nevertheless, several endogenously produced epoxides of fatty acids function as important regulatory mediators. By mediating the formation of cytotoxic dihydrodiol fatty acids on the expense of cytoprotective epoxides of fatty acids, soluble EH is considered to have cytotoxic activity. Indeed, the attenuation of microsomal EH, achieved by chemical inhibitors or preexists due to specific genetic polymorphisms, is linked to the aggravation of the toxicity of xenobiotics, as well as the risk of cancer and inflammatory diseases, whereas soluble EH inhibition has been emerged as a promising intervention against several diseases, most importantly cardiovascular, lung and metabolic diseases. However, there is reportedly a significant overlap in substrate selectivity between microsomal and soluble EH. In addition, microsomal and soluble EH were found to have the same catalytic triad and identical molecular mechanism. Consequently, the physiological functions of microsomal and soluble EH are also overlapped. Thus, studying the biological effects of microsomal or soluble EH alterations needs to include the effects on both the metabolism of reactive metabolites, as well as epoxides of fatty acids. This review focuses on the multifaceted role of EH in the metabolism of xenobiotic and endogenous epoxides and the impact of EH modulations.
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Affiliation(s)
- Ahmed A El-Sherbeni
- Faculty of Pharmacy and Pharmaceutical Sciences, 2142J Katz Group-Rexall Centre for Pharmacy and Health Research, University of Alberta, Edmonton, AB, T6G 2E1, Canada
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Liu SG, Yuan SH, Wu HY, Huang CS, Liu J. The programmed cell death 6 interacting protein insertion/deletion polymorphism is associated with non-small cell lung cancer risk in a Chinese Han population. Tumour Biol 2014; 35:8679-83. [PMID: 24870593 DOI: 10.1007/s13277-014-2081-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 05/08/2014] [Indexed: 12/01/2022] Open
Abstract
It has been proposed that genetic factors contribute to the susceptibility of non-small cell lung cancer (NSCLC). The programmed cell death 6 interacting protein (PDCD6IP) encodes for a protein that has been known to bind to the products of the PDCD6 gene, a required protein in apoptosis. The aim of this study is to investigate the relationship between PDCD6IP insertion/deletion (I/D) polymorphism (rs28381975) and NSCLC risk in a Chinese population. A population-based case-control study was conducted in 449 NSCLC patients and 512 cancer-free controls. The genotype of the PDCD6IP gene was determined by using a polymerase chain reaction assay. The promoter activity was analyzed by luciferase reporter assay in A549 and H1299 cells. Statistically significant difference was observed when the patients and controls were compared according to ID + II versus DD (OR = 1.72, 95 % CI 1.29-2.31, P < 0.01). The I allele was significantly associated with NSCLC risk (OR = 1.41, 95 % CI 1.18-1.69, P < 0.01). Compared to TNM stage I + II, PDCD6IP I/D polymorphism significantly increased advanced NSCLC risk (OR = 2.06, 95 % CI 1.30-3.26, P < 0.01). Promoter reporter structures carrying the I allele displayed significantly higher promoter activity than the D allele in A549 and H1299 cells (P = 0.001). The results from this study suggested that PDCD6IP I/D polymorphism was potentially related to NSCLC susceptibility in Chinese Han population.
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Affiliation(s)
- Shu-Guang Liu
- Department of Surgery, Shandong Cancer Hospital and Institute, Jinan, 250117, Shandong, China,
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Ashour W, Fathy M, Hamed M, Youssif O, Fawzy N. Association between environmental tobacco smoke exposure and lung cancer susceptibility: Modification by antioxidant enzymes genetic polymorphisms. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2013. [DOI: 10.1016/j.ejcdt.2013.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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10
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Fathy M, Hamed M, Youssif O, Fawzy N, Ashour W. Association Between Environmental Tobacco Smoke Exposure and Lung Cancer Susceptibility: Modification by Antioxidant Enzyme Genetic Polymorphisms. Mol Diagn Ther 2013; 18:55-62. [DOI: 10.1007/s40291-013-0051-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Gui Q, Xiong J, Zhu C, Lu X. The present/null polymorphism in the GSTT1 gene and the risk of lung cancer in Chinese population. Tumour Biol 2013; 34:3465-9. [DOI: 10.1007/s13277-013-0923-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 06/11/2013] [Indexed: 11/24/2022] Open
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Tian X, Tian Y, Ma P, Sui C, Meng F, Li Y, Fu L, Jiang T, Wang Y, Jiang Y. Association between the XRCC3 C241T polymorphism and lung cancer risk in the Asian population. Tumour Biol 2013; 34:2589-97. [PMID: 23749486 DOI: 10.1007/s13277-013-0806-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 04/10/2013] [Indexed: 11/25/2022] Open
Abstract
X-ray repair cross-complementing group 3 (XRCC3) plays a vital role in maintaining the stability of genome by homologous recombination repair for DNA double-strand breaks. The genetic polymorphism of XRCC3 C241T has been implicated in lung cancer risk, but the findings across published studies in Asians are inconsistent and inconclusive. To estimate the precise association of XRCC3 C241T polymorphism with lung cancer risk, a meta-analysis of all currently available studies in Asians was performed. A comprehensive search of the PubMed, Embase, Web of Science, and China National Knowledge Infrastructure databases was conducted for eligible studies based on the inclusion criteria. The pooled odds ratios (ORs) with corresponding 95 % confidence intervals (CIs) were calculated to assess the association. Besides, subgroup analysis and sensitivity analysis were also performed for further estimation. Seven available studies with a total of 7,398 subjects were finally included into this meta-analysis. The overall ORs indicated that the XRCC3 C241T polymorphism was not associated with a lung cancer risk among Asians in all genetic contrast modes (ORT allele vs. C allele = 1.08, 95 % CI 0.95-1.24, P OR = 0.252; ORTT vs. CC = 1.30, 95 % CI 0.69-2.45, P OR = 0.426; ORCT vs. CC = 1.07, 95 % CI 0.93-1.24, P OR = 0.363; ORTT + CT vs. CC = 1.08, 95 % CI 0.94-1.24, P OR = 0.300; ORTT vs. CC + CT = 1.29, 95 % CI 0.68-2.43, P OR = 0.439). We failed to identify significant association between the XRCC3 C241T polymorphism and risk of lung cancer in Chinese and population-based studies. Interestingly, the pooled ORs in hospital-based studies indicated that the XRCC3 C241T variant carriers were more susceptible to lung cancer (ORT allele vs. C allele = 1.27, 95 % CI 1.04-1.56, P OR = 0.019; ORCT vs. CC = 1.26, 95 % CI 1.01-1.57, P OR = 0.045; ORTT + CT vs. CC = 1.28, 95 % CI 1.03-1.59, P OR = 0.027). Sensitivity analysis confirmed the stability and liability of all results. This meta-analysis suggests that the XRCC3 C241T polymorphism may not exert a risk effect on the lung cancer risk in Asians, although a statistically significant association was observed among the hospital-based studies. Thus, the precise relationship between the XRCC3 C241T variant and lung cancer risk needs further confirmation in future studies with large available data.
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Affiliation(s)
- Xin Tian
- Molecular Oncology Department of Cancer Research Institution, The First Hospital of China Medical University, Shenyang, 110001, China
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Association between microsomal epoxide hydrolase 1 polymorphisms and susceptibility to esophageal cancer: a meta-analysis. Tumour Biol 2013; 34:2383-8. [DOI: 10.1007/s13277-013-0787-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 04/01/2013] [Indexed: 02/07/2023] Open
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Wang S, Zhu J, Zhang R, Wang S, Gu Z. Association between microsomal epoxide hydrolase 1 T113C polymorphism and susceptibility to lung cancer. Tumour Biol 2013; 34:1045-52. [PMID: 23378225 DOI: 10.1007/s13277-012-0644-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Accepted: 12/27/2012] [Indexed: 11/30/2022] Open
Abstract
Previous case-control studies assessing the association between microsomal epoxide hydrolase 1 (EPHX1) T113C and susceptibility to lung cancer reported conflicting results. Thus, a systemic review and meta-analysis of published studies were performed to assess the possible association. PubMed and Embase databases were searched for all eligible studies. The strength of the association between EPHX1 T113C polymorphism and lung cancer risk was estimated by the pooled odds ratios (ORs) with its 95 % confidence interval. Twenty-four individual case-control studies involving a total of 4,970 lung cancer cases and 8,917 controls were finally included into the meta-analysis. When all 24 studies were included into the meta-analysis, the pooled results suggested that there was no association between EPHX1 T113C polymorphism and lung cancer risk under all four comparison models, and all P values for the pooled ORs were more than 0.05. In the subgroup analysis of Caucasians, the pooled results suggested that EPHX1 T113C polymorphism was associated with decreased risk of lung cancer under all four comparison models, and all P values for the pooled ORs were less than 0.05. However, in the subgroup analysis of Asians, the pooled results suggested that EPHX1 T113C polymorphism was associated with increased risk of lung cancer under three comparison models, and all P values for the pooled ORs were less than 0.05. There was no risk of publication bias. This current meta-analysis suggests that EPHX1 T113C polymorphism is associated with lung cancer risk, and there is an obvious race-specific effect in the association.
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Affiliation(s)
- Siwen Wang
- Department of Emergency, Fourth Affiliated Hospital of China Medical University, No. 102 Nan Qi Road, Heping District, Shenyang City, 110005, Liaoning Province, People's Republic of China.
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