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Mohammadi H, Roochi MM, Sadeghi M, Garajei A, Heidar H, Ghaderi B, Tadakamadla J, Meybodi AA, Dallband M, Mostafavi S, Mostafavi M, Salehi M, Sadeghi-Bahmani D, Brand S. Association of N-acetyltransferases 1 and 2 Polymorphisms with Susceptibility to Head and Neck Cancers-A Meta-Analysis, Meta-Regression, and Trial Sequential Analysis. MEDICINA-LITHUANIA 2021; 57:medicina57101095. [PMID: 34684132 PMCID: PMC8541135 DOI: 10.3390/medicina57101095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/01/2021] [Accepted: 10/09/2021] [Indexed: 11/23/2022]
Abstract
Background and objective:N-acetyltransferases 1 and 2 (NAT1 and NAT2) genes have polymorphisms in accordance with slow and rapid acetylator phenotypes with a role in the development of head and neck cancers (HNCs). Herein, we aimed to evaluate the association of NAT1 and NAT2 polymorphisms with susceptibility to HNCs in an updated meta-analysis. Materials and methods: A search was comprehensively performed in four databases (Web of Science, Scopus, PubMed/Medline, and Cochrane Library until 8 July 2021). The effect sizes, odds ratio (OR) along with 95% confidence interval (CI) were computed. Trial sequential analysis (TSA), publication bias and sensitivity analysis were conducted. Results: Twenty-eight articles including eight studies reporting NAT1 polymorphism and twenty-five studies reporting NAT2 polymorphism were involved in the meta-analysis. The results showed that individuals with slow acetylators of NAT2 polymorphism are at higher risk for HNC OR: 1.22 (95% CI: 1.02, 1.46; p = 0.03). On subgroup analysis, ethnicity, control source, and genotyping methods were found to be significant factors in the association of NAT2 polymorphism with the HNC risk. TSA identified that the amount of information was not large enough and that more studies are needed to establish associations. Conclusions: Slow acetylators in NAT2 polymorphism were related to a high risk of HNC. However, there was no relationship between NAT1 polymorphism and the risk of HNC.
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Affiliation(s)
- Hady Mohammadi
- Department of Oral and Maxillofacial Surgery, Fellowship in Maxillofacial Trauma, Health Services, Kurdistan University of Medical Sciences, Sanandaj 6617713446, Iran;
| | - Mehrnoush Momeni Roochi
- Department of Oral and Maxillofacial Surgery, Fellowship in Maxillofacial Trauma, School of Dentistry, Tehran University of Medical Sciences, Tehran 1439955991, Iran; (M.M.R.); (A.G.); (H.H.); (M.S.)
| | - Masoud Sadeghi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran;
| | - Ata Garajei
- Department of Oral and Maxillofacial Surgery, Fellowship in Maxillofacial Trauma, School of Dentistry, Tehran University of Medical Sciences, Tehran 1439955991, Iran; (M.M.R.); (A.G.); (H.H.); (M.S.)
- Department of Head and Neck Surgical Oncology and Reconstructive Surgery, The Cancer Institute, School of Medicine, Tehran University of Medical Sciences, Tehran 1439955991, Iran;
| | - Hosein Heidar
- Department of Oral and Maxillofacial Surgery, Fellowship in Maxillofacial Trauma, School of Dentistry, Tehran University of Medical Sciences, Tehran 1439955991, Iran; (M.M.R.); (A.G.); (H.H.); (M.S.)
| | - Bayazid Ghaderi
- Cancer and Immunology Research Center, Department of Internal Medicine, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj 6617913446, Iran;
| | - Jyothi Tadakamadla
- School of Medicine and Dentistry, Griffith University, Brisbane, QLD 4222, Australia;
| | - Ali Aghaie Meybodi
- Department of Head and Neck Surgical Oncology and Reconstructive Surgery, The Cancer Institute, School of Medicine, Tehran University of Medical Sciences, Tehran 1439955991, Iran;
| | - Mohsen Dallband
- Department of Oral and Maxillofacial Surgery, Dental School, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran;
| | - Sarton Mostafavi
- English Department, Baneh Branch, Islamic Azad University, Baneh 6691133845, Iran;
| | - Melina Mostafavi
- Tehran Medical Branch, Islamic Azad University, Tehran 1419733171, Iran;
| | - Mojtaba Salehi
- Department of Oral and Maxillofacial Surgery, Fellowship in Maxillofacial Trauma, School of Dentistry, Tehran University of Medical Sciences, Tehran 1439955991, Iran; (M.M.R.); (A.G.); (H.H.); (M.S.)
| | - Dena Sadeghi-Bahmani
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran;
- Center for Affective, Stress and Sleep Disorders, University of Basel, Psychiatric Clinics, 4001 Basel, Switzerland
- Substance Abuse Prevention Research Center, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- Department of Psychology, Stanford University, Stanford, CA 94305, USA
| | - Serge Brand
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah 6719851115, Iran;
- Center for Affective, Stress and Sleep Disorders, University of Basel, Psychiatric Clinics, 4001 Basel, Switzerland
- Substance Abuse Prevention Research Center, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- Division of Sport Science and Psychosocial Health, Department of Sport, Exercise and Health, University of Basel, 4052 Basel, Switzerland
- School of Medicine, Tehran University of Medical Sciences, Tehran 1416753955, Iran
- Correspondence:
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Functional variability of rhesus macaque (Macaca mulatta) NAT2 gene for drug-metabolising arylamine N-acetyltransferase 2. Biochem Pharmacol 2021; 188:114545. [PMID: 33831395 DOI: 10.1016/j.bcp.2021.114545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 11/21/2022]
Abstract
Human NAT2 is a polymorphic pharmacogene encoding for N-acetyltransferase 2, a hepatic enzyme active towards arylamine and arylhydrazine drugs, including the anti-tubercular antibiotic isoniazid. The isoenzyme also modulates susceptibility to chemical carcinogenesis, particularly of the bladder. Human NAT2 represents an ideal model for anthropological investigations into the demographic adaptation of worldwide populations to their xenobiotic environment. Its sequence appears to be subject to positive selection pressures that are population-specific and may be attributed to gene-environment interactions directly associated with exogenous chemical challenges. However, recent evidence suggests that the same evolutionary pattern may not be observed in other primates. Here, we report NAT2 polymorphism in 25 rhesus macaques (Macaca mulatta) and compare the frequencies and functional characteristics of 12 variants. Seven non-synonymous single nucleotide variations (SNVs) were identified, including one nonsense mutation. The missense SNVs were demonstrated to affect enzymatic function in a substrate-dependent manner, albeit more moderately than certain NAT1 SNVs recently characterised in the same cohort. Haplotypic and functional variability of NAT2 was comparable to that previously observed for NAT1 in the same population sample, suggesting that the two paralogues may have evolved under similar selective pressures in the rhesus macaque. This is different to the population variability distribution pattern reported for humans and chimpanzees. Recorded SNVs were also different from those found in other primates. The study contributes to further understanding of NAT2 functional polymorphism in the rhesus macaque, a non-human primate model used in biomedicine and pharmacology, indicating variability in xenobiotic acetylation that could affect drug metabolism.
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Conway LP, Rendo V, Correia MSP, Bergdahl IA, Sjöblom T, Globisch D. Unexpected Acetylation of Endogenous Aliphatic Amines by Arylamine N-Acetyltransferase NAT2. Angew Chem Int Ed Engl 2020; 59:14342-14346. [PMID: 32497306 PMCID: PMC7497018 DOI: 10.1002/anie.202005915] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/19/2020] [Indexed: 12/21/2022]
Abstract
N-Acetyltransferases play critical roles in the deactivation and clearance of xenobiotics, including clinical drugs. NAT2 has been classified as an arylamine N-acetyltransferase that mainly converts aromatic amines, hydroxylamines, and hydrazines. Herein, we demonstrate that the human arylamine N-acetyltransferase NAT2 also acetylates aliphatic endogenous amines. Metabolomic analysis and chemical synthesis revealed increased intracellular concentrations of mono- and diacetylated spermidine in human cell lines expressing the rapid compared to the slow acetylator NAT2 phenotype. The regioselective N8 -acetylation of monoacetylated spermidine by NAT2 answers the long-standing question of the source of diacetylspermidine. We also identified selective acetylation of structurally diverse alkylamine-containing drugs by NAT2, which may contribute to variations in patient responses. The results demonstrate a previously unknown functionality and potential regulatory role for NAT2, and we suggest that this enzyme should be considered for re-classification.
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Affiliation(s)
- Louis P. Conway
- Department of Medicinal ChemistryScience for Life LaboratoryUppsala UniversityBox 57475123UppsalaSweden
| | - Veronica Rendo
- Department of Immunology, Genetics and PathologyScience for Life LaboratoryUppsala University75123UppsalaSweden
| | - Mário S. P. Correia
- Department of Medicinal ChemistryScience for Life LaboratoryUppsala UniversityBox 57475123UppsalaSweden
| | - Ingvar A. Bergdahl
- The Biobank Research Unit and Department of Public Health and Clinical MedicineSection of Sustainable HealthUmeå University90185UmeåSweden
| | - Tobias Sjöblom
- Department of Immunology, Genetics and PathologyScience for Life LaboratoryUppsala University75123UppsalaSweden
| | - Daniel Globisch
- Department of Medicinal ChemistryScience for Life LaboratoryUppsala UniversityBox 57475123UppsalaSweden
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Conway LP, Rendo V, Correia MSP, Bergdahl IA, Sjöblom T, Globisch D. Unexpected Acetylation of Endogenous Aliphatic Amines by Arylamine
N
‐Acetyltransferase NAT2. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Louis P. Conway
- Department of Medicinal Chemistry Science for Life Laboratory Uppsala University Box 574 75123 Uppsala Sweden
| | - Veronica Rendo
- Department of Immunology, Genetics and Pathology Science for Life Laboratory Uppsala University 75123 Uppsala Sweden
| | - Mário S. P. Correia
- Department of Medicinal Chemistry Science for Life Laboratory Uppsala University Box 574 75123 Uppsala Sweden
| | - Ingvar A. Bergdahl
- The Biobank Research Unit and Department of Public Health and Clinical Medicine Section of Sustainable Health Umeå University 90185 Umeå Sweden
| | - Tobias Sjöblom
- Department of Immunology, Genetics and Pathology Science for Life Laboratory Uppsala University 75123 Uppsala Sweden
| | - Daniel Globisch
- Department of Medicinal Chemistry Science for Life Laboratory Uppsala University Box 574 75123 Uppsala Sweden
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N-acetyltransferase 2 polymorphism is associated with bladder cancer risk: An updated meta-analysis based on 54 case-control studies. Gene 2020; 757:144924. [PMID: 32622992 DOI: 10.1016/j.gene.2020.144924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/08/2020] [Accepted: 06/27/2020] [Indexed: 12/24/2022]
Abstract
OBJECTIVE N-acetyltransferase 2 (NAT2) polymorphism could participate in the metabolism of carcinogens through regulating the activity of a series of critical enzymes. However, the effects of NAT2 polymorphism on bladder cancer (BCa) risk were still inconclusive. In order to illustrate whether NAT2 polymorphism may influence the susceptibility to BCa, we conducted this updated meta-analysis. MATERIALS AND METHODS Databases including PubMed, Medline, Embase, Web of Science, Cochrane Library, and China National Knowledge Infrastructure(CNKI) were systematically retrieved and we applied MetaGenyo to perform final meta-analysis. Odds ratios (ORs) as well as 95% confidence intervals (CIs) were calculated and Bonferroni method was applied to correct the P-value for multiple comparisons. The registration of this study protocol is at PROSPERO and ID is CRD42019133957. RESULTS Ultimately, 54 case-control studies were identified for final meta-analysis (13343 BCa cases and 18,586 controls). Overall analysis indicated that the slow genotype in NAT2 polymorphism was obviously associated with BCa risk (PBonferroni < 0.001). Subgroup analyses demonstrated that significant risk with the slow genotype was observed in Caucasians, Asians, smokers, non-exposed individuals, high grade bladder cancer (HGBC) patients and muscle-invasive bladder cancer (MIBC) patients. In addition, the intermediate NAT2 genotype was revealed to increase the BCa risk of Asians and transitional cell carcinoma (TCC) patients. However, no correlation was identified in Africans with the NAT2 polymorphism. CONCLUSIONS The slow NAT2 genotype was identified to be the risk genotype for BCa. The intermediate genotype could serve as the candidate risk genotype. The gene-smoking interaction with NAT2 polymorphism might accelerate the tumor progression.
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Kamel AM, Ebid GTA, Moussa HS. N-Acetyltransferase 2 (NAT2) polymorphism as a risk modifier of susceptibility to pediatric acute lymphoblastic leukemia. Tumour Biol 2015; 36:6341-8. [PMID: 25804798 DOI: 10.1007/s13277-015-3320-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 03/12/2015] [Indexed: 12/18/2022] Open
Abstract
N-Acetyltransferases (NAT) have been known to modify the risk to a variety of solid tumors. However, the role of NAT2 polymorphism in risk susceptibility to childhood acute lymphoblastic leukemia (ALL) is still not well known. We performed a case-control study to determine if the common NAT2 polymorphisms play a role in altering susceptibility to pediatric ALL. DNA of 92 pediatric ALL patients and 312 healthy controls was analyzed for the NAT2 polymorphisms using the PCR-RFLP method. The wild-type NAT2*4 was encountered in 8.6 % of patients versus 11.8 % of controls (P = 0.23). The rapid acetylators NAT2*12 803A>G, AG, GG, and AG/GG were overrepresented in controls (P = 0.0001; odds ratio (OR) 0.22, 0.19, and 0.21 respectively). NAT2*5D 341T>C and NAT2*11A 481C>T were of comparable frequencies. For their combination, NAT2*5A, a slow acetylator, both TCTT and CCCT were overrepresented in patients (P < 0.001; OR 15.8 and 17.9 respectively). NAT2*5B (803A>G, 341T>C, 481C>T) was overrepresented in controls (P < 0.001; OR 0.12). Apparently, 803A>G ameliorated the combined effect of 341T>C and 481C>T. A similar effect was obtained with NAT2*5C (341T>A, 803A>G) (P < 0.0001; OR 0.11). For slow acetylator NAT2*7A 857G>A, GA and GA/AA were overrepresented in patients (P = 0.009 and 0.01; OR 2.74 and 2.72 respectively). NAT2*13 282C>T, NAT2*6B 590G>A, and NAT2*14A 191G>A were of comparable frequencies. NAT2 282C>A in combination with NAT2 857G>A (NAT2*7B) showed a synergistic effect in patients versus controls (P < 0.0001; OR 3.51). In conclusion, NAT2 gene polymorphism(s) with slow acetylator phenotype is generally associated with the risk of development of ALL in children.
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Affiliation(s)
- Azza M Kamel
- Clinical Pathology Department, NCI, Cairo University, Fom El-Khalig square, Kasr El-Aini St, Cairo, 11796, Egypt,
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Glutathione S-transferase T1 null genotype and laryngeal cancer risk: a meta-analysis. Tumour Biol 2014; 35:8781-5. [DOI: 10.1007/s13277-014-2121-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Accepted: 07/26/2013] [Indexed: 10/25/2022] Open
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Yarosh SL, Kokhtenko EV, Churnosov MI, Ataman AV, Solodilova MA, Polonikov AV. Synergism between the N-acetyltransferase 2 gene and oxidant exposure increases the risk of idiopathic male infertility. Reprod Biomed Online 2014; 29:362-9. [PMID: 24928356 DOI: 10.1016/j.rbmo.2014.04.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/24/2014] [Accepted: 04/29/2014] [Indexed: 12/14/2022]
Abstract
N-acetyltransferase (NAT2) is a phase-II xenobiotic-metabolizing enzyme participating in the detoxification of toxic arylamines, aromatic amines and hydrazines. The present study was designed to investigate whether two common single-nucleotide polymorphisms (SNP) of the NAT2 gene (481C>T, rs1799929; 590G>A, rs1799930) are associated with susceptibility to idiopathic male infertility and to assess if the risk is modified by oxidant and antioxidant exposures. A total 430 DNA samples (203 infertile patients and 227 fertile men) were genotyped for the polymorphisms by PCR and restriction fragment length polymorphism. No association was found between the NAT2 polymorphisms and idiopathic male infertility. However, gene-environment interaction analysis revealed that a low-acetylation genotype, 590GA, was significantly associated with increased disease risk in men who had environmental risk factors such as cigarette smoking (OR 1.71, 95% CI 1.02-2.87, P = 0.042), alcohol abuse (OR 2.14, 95% CI 1.08-4.27, P = 0.029) and low fruit/vegetable intake (OR 1.68, 95% CI 1.01-2.79, P = 0.04). This pilot study found, as far as is known for the first time, that the polymorphism 590G>A of NAT2 is a novel genetic marker for susceptibility to idiopathic male infertility, but the risk is potentiated by exposure to various environmental oxidants.
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Affiliation(s)
- Sergey L Yarosh
- Department of Biology, Medical Genetics and Ecology, Kursk State Medical University, Kursk, Russian Federation; Family Planning and Reproductive Health Clinic, Regional Perinatal Center, Kursk, Russian Federation
| | - Elena V Kokhtenko
- Department of Zoology and Theory of Evolution, Kursk State University, Kursk, Russian Federation
| | - Mikhail I Churnosov
- Department of Medical Biological Disciplines, Belgorod State National Research University, Belgorod, Russian Federation
| | | | - Maria A Solodilova
- Department of Biology, Medical Genetics and Ecology, Kursk State Medical University, Kursk, Russian Federation
| | - Alexey V Polonikov
- Department of Biology, Medical Genetics and Ecology, Kursk State Medical University, Kursk, Russian Federation.
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Coskunpinar E, Oltulu Y, Orhan K, Tiryakioglu N, Kanliada D, Akbas F. Identification of a differential expression signature associated with tumorigenesis and metastasis of laryngeal carcinoma. Gene 2014; 534:183-8. [DOI: 10.1016/j.gene.2013.10.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 10/22/2013] [Accepted: 10/29/2013] [Indexed: 01/05/2023]
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Zhang L, Xiang Z, Hao R, Li R, Zhu Y. N-acetyltransferase 2 genetic variants confer the susceptibility to head and neck carcinoma: evidence from 23 case-control studies. Tumour Biol 2013; 35:3585-95. [PMID: 24338712 DOI: 10.1007/s13277-013-1473-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 11/26/2013] [Indexed: 02/04/2023] Open
Abstract
Previous evidence indicated that N-acetyltransferase 2 (NAT2) polymorphisms might be a risk factor for several cancers. A number of studies have been conducted on the association between NAT2 polymorphisms and head and neck cancer (HNC) risk. Nevertheless, the results were conflicting. Published meta-analysis on this issue has generated inconclusive results. Thus, we aimed to derive a more precise estimation of the relationship by conducting an updated meta-analysis. Published data prior to August 2013 have been searched and screened. Subgroup analysis on ethnicity, source of controls, sample size, and genotyping method were also performed. As a result, a total of 23 case-control studies including 4,028 cases and 4,872 controls were selected for analysis. Interestingly, the results showed that NAT2 polymorphisms might increase HNC risk for the overall data (OR 1.23, 95% CI 1.01-1.49). Moreover, in subgroup analyses according to ethnicity, data showed that slow acetylators might increase HNC susceptibility among Asians (OR 1.78, 95% CI 1.27-2.49), but not among Caucasians or mixed ethnicities. In conclusion, NAT2 polymorphism might be a low-penetrant risk factor for HNC among Asians.
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Affiliation(s)
- Liang Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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Igissinov N, Zatoskikh V, Moore MA, Igissinov S, Toulebaeyev R, Mustafina M, Valieva S, Aldiyarova G, Bukeyeva Z, Venglovskiy A. Epidemiological evaluation of laryngeal cancer incidence in Kazakhstan for the years 1999-2009. Asian Pac J Cancer Prev 2013; 14:3969-74. [PMID: 23886216 DOI: 10.7314/apjcp.2013.14.6.3969] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The purpose was to provide a descriptive epidemiological assessment of the incidence of cancer of the larynx in Kazakhstan and spatial evaluation with gender characteristics. This retrospective study covered all new cases of laryngeal cancer in 11 years (1999-2009). The total number was 4,967 cases, 4,535 (91.3%) in males and 432 (8.7%) in women, with a ratio of 10.5:1. The higher incidence in men compared to women was evident in all age groups, the differences being statistically significant (p<0.05). At the same time revealed a unimodal growth with age, peaking at 70 years and older both sexes. In the dynamics, incidence rates of laryngeal cancer demonstrated a tendency to decrease, in women (T=-6.7%) this being more pronounced than in men (T=-3.3%). Levels were determined to produce cartograms of cancer of the larynx for male and female populations, clear geographical variation being evidenced. The data are discussed with reference to possible risk factors.
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Zhuo W, Zhang L, Qiu Z, Cai L, Zhu B, Chen Z. Association of NAT2 polymorphisms with risk of colorectal adenomas: Evidence from 3,197 cases and 4,681 controls. Exp Ther Med 2012; 4:895-900. [PMID: 23226745 PMCID: PMC3493788 DOI: 10.3892/etm.2012.695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 08/29/2012] [Indexed: 12/14/2022] Open
Abstract
Previous studies have implicated NAT2 polymorphisms as risk factors for various types of cancer. Colorectal adenomas are recognized as a pre-neoplastic lesion. A growing body of research documenting the association of NAT2 polymorphisms with the risk of colorectal adenomas has yielded conflicting results. The aim of the present study was to derive a more precise estimation of this association. Meta-analyses assessing the association of NAT2 variants with colorectal adenomas were conducted and subgroup analyses on smoking status and the source of the controls were also performed. Eligible studies were identified for the period before March 2012. A total of seven case-control studies, including 3,197 cases and 4,681 controls, were selected following extensive searching and screening. In the overall data, no associations between NAT2 polymorphisms and colorectal adenomas were observed [odds ratio (OR), 1.04; 95% confidence interval (CI), 0.90-1.21]. However, in the subgroup analysis concerning smoking status, slow acetylator variants were revealed to be correlated with increased colorectal adenoma risk in individuals who have smoked (OR, 1.31; 95% CI, 1.04-1.64). In conclusion, the data of the present study suggested that NAT2 polymorphisms may be a risk factor for colorectal adenomas in individuals who have a history of smoking.
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Affiliation(s)
- Wenlei Zhuo
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University
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Zhuo XL, Ling JJ, Zhou Y, Zhao HY, Song YF, Tan YH. NAT2 polymorphisms with oral carcinoma susceptibility: a meta-analysis. Mol Biol Rep 2012; 39:8813-9. [PMID: 22722991 DOI: 10.1007/s11033-012-1744-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 06/07/2012] [Indexed: 12/18/2022]
Abstract
Published data have implicated NAT2 polymorphisms as risk factors for various cancers. A number of studies have focused on the association of NAT2 polymorphisms with susceptibility to oral carcinoma and have yielded inconclusive results. The aim of the present study was to derive a more precise estimation of the relationship. We first carried out a deliberate search in the databases without a language limitation, covering all papers published up to Dec 2011. A total of seven case-control studies including 1,379 cases and 1,868 controls were selected and the relevant data were extracted for systematic meta-analyses. No significant association was found for the overall data (OR: 1.04, 95 % CI: 0.79-1.39). In subgroup analyses according to ethnicity, slow acetylators might increase oral cancer risk among Asians (OR: 1.38, 95 % CI: 1.04-1.82) but not Caucasians or Mixed races. The data suggested that NAT2 polymorphisms might be a low-penetrant risk factor for oral carcinoma in Asians.
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Affiliation(s)
- Xian-Lu Zhuo
- Department of Stomatology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
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Zhang J, Xu F, Ouyang C. Joint effect of polymorphism in the N-acetyltransferase 2 gene and smoking on hepatocellular carcinoma. Tumour Biol 2012; 33:1059-63. [PMID: 22293947 DOI: 10.1007/s13277-012-0340-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 01/19/2012] [Indexed: 12/22/2022] Open
Abstract
The N-acetyltransferase 2 gene (NAT2) has been implicated in the development of hepatocellular carcinoma (HCC). However, the results have been inconsistent. In this study, the authors performed a meta-analysis to clarify the association between NAT2 polymorphism and HCC risk. Published literatures from PubMed, EMBASE, CNKI, and Wan Fang Data were retrieved. Pooled odds ratio (OR) with 95% confidence interval (CI) was calculated using fixed- or random-effects model. Eight studies including 1,084 HCC cases and 1,682 controls were identified for the data analysis. The overall result showed that there was no statistically significant association between NAT2 genotypes and HCC risk (slow acetylation vs. rapid/intermediate acetylation: OR01.03, 95% CI 0.86–1.24). In the stratified analyses, NAT2 genotypes were also not significantly associated with HCC risk among both Europeans (OR01.11, 95% CI 0.86–1.43) and East Asians (OR01.01, 95% CI 0.65–1.56). Further subgroup analyses based on the smoking status showed that the effect size was statistically significant among the smokers (OR02.09, 95% CI 1.07–4.09), but not among those who never smoked (OR01.26, 95% CI 0.88–1.82). The present meta-analysis indicated that NAT2 genotypes were not associated with increased risk of HCC among the overall population but increased the risk of HCC among the smokers.
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Affiliation(s)
- Jie Zhang
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
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