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Original Article
Interaction between vitamin E intake and a COMT gene variant on colorectal cancer risk among Korean adults: a case-control study
Shinyoung Jun, Madhawa Gunathilake, Jeonghee Lee, Jae Hwan Oh, Hee Jin Chang, Dae Kyung Sohn, Aesun Shin, Jeongseon Kim
Epidemiol Health. 2023;45:e2023100.   Published online November 14, 2023
DOI: https://doi.org/10.4178/epih.e2023100
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Previous human trials have not supported the anticarcinogenic effect of vitamin E despite biological plausibility and considerable epidemiological evidence. A possible explanation for this inconsistency is the interactive effect of the catechol-O-methyltransferase (COMT) gene and supplemental vitamin E on cancer. We examined whether a COMT gene variant modulates the effect of dietary vitamin E intake on colorectal cancer (CRC) risk.
METHODS
In this case-control study of Korean adults (975 cases and 975 age- and sex-matched controls), dietary vitamin E density (mg/1,000 kcal) was measured using a semiquantitative food frequency questionnaire, COMT single nucleotide polymorphism (SNP) rs740603 (A>G) was genotyped, and CRC was verified histologically. We estimated odds ratios (ORs) and 95% confidence intervals (CIs) using unconditional logistic regression models with adjustments for potential confounders.
RESULTS
Higher vitamin E density was associated with a lower risk of CRC (highest vs. lowest quartiles: OR, 0.72; 95% CI, 0.55 to 0.96; p-for-trend=0.002). When stratified by COMT SNP rs740603 genotype, the inverse association between vitamin E density and CRC risk was confined to those with at least 1 A allele (≥median vs. <median: OR, 0.63; 95% CI, 0.51 to 0.78). The interaction between rs740603 and vitamin E density was significant (p-for-interaction=0.020). No direct association was observed between COMT SNP rs740603 and CRC risk (OR, 1.08; 95% CI, 0.83 to 1.41).
CONCLUSIONS
Our findings support a role for a genetic polymorphism in COMT in modifying the association between dietary vitamin E intake and CRC.
Summary
Korean summary
본 연구는 국립암센터에서 수집한 대장암 환자-대조군 자료를 활용하여, catechol-O-methyltransferase (COMT) 유전자의 단일염기다형성(SNP)에 따라 비타민 E 섭취와 대장암 위험 간의 연관성이 달라지는지 파악하고자 하였다. 분석 결과, COMT SNP rs740603의 유전자형에 따라 식이를 통한 비타민 E 섭취 밀도와 대장암 위험 간의 연관성이 다르게 나타나 COMT 유전자와 비타민 E 섭취 간의 상호작용이 대장암 발생 위험에 영향을 미칠 가능성이 있음을 제시하였다.
Key Message
In this case-control study of Korean adults, we examined whether a polymorphism in the catechol-O-methyltransferase (COMT) gene modulates the effect of dietary vitamin E intake on colorectal cancer risk. Our results suggest that the inverse association between vitamin E density and colorectal cancer risk is confined to carriers of the COMT rs740603 A allele. The findings of our study support the interactive effect of the COMT gene and vitamin E intake on colorectal cancer risk.
Methods
Meta-analysis for genome-wide association studies using case-control design: application and practice
Sungryul Shim, Jiyoung Kim, Wonguen Jung, In-Soo Shin, Jong-Myon Bae
Epidemiol Health. 2016;38:e2016058.   Published online December 18, 2016
DOI: https://doi.org/10.4178/epih.e2016058
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  • 4 Web of Science
  • 3 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
This review aimed to arrange the process of a systematic review of genome-wide association studies in order to practice and apply a genome-wide meta-analysis (GWMA). The process has a series of five steps: searching and selection, extraction of related information, evaluation of validity, meta-analysis by type of genetic model, and evaluation of heterogeneity. In contrast to intervention meta-analyses, GWMA has to evaluate the Hardy–Weinberg equilibrium (HWE) in the third step and conduct meta-analyses by five potential genetic models, including dominant, recessive, homozygote contrast, heterozygote contrast, and allelic contrast in the fourth step. The ‘genhwcci’ and ‘metan’ commands of STATA software evaluate the HWE and calculate a summary effect size, respectively. A meta-regression using the ‘metareg’ command of STATA should be conducted to evaluate related factors of heterogeneities.
Summary
Korean summary
오늘날 활발히 수행되고 있는 유전체역학연구는 재현성의 문제, 대상자 크기의 한계 등으로 유전체 메타분석 연구가 요구되고 있다. 유전체 메타분석의 전반적인 수행 단계는 약물, 수술 등의 중개연구의 메타분석처럼 5 단계를 밟아 수행된다. 그러나, 유전체 메타분석은 3번째 과정에서 Hardy–Weinberg equilibrium (HWE) 검정과 4번째 과정에서 5가지 가능한 유전형 모델에 따라 메타분석이 이루어진다는 점에서 중개연구의 메타분석과 차이가 있다.

Citations

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  • Recommendations for Statistical Reporting in Cardiovascular Medicine: A Special Report From the American Heart Association
    Andrew D. Althouse, Jennifer E. Below, Brian L. Claggett, Nancy J. Cox, James A. de Lemos, Rahul C. Deo, Sue Duval, Rory Hachamovitch, Sanjay Kaul, Scott W. Keith, Eric Secemsky, Armando Teixeira-Pinto, Veronique L. Roger
    Circulation.2021;[Epub]     CrossRef
  • Effects of Arsenic (+3 Oxidation State) Methyltransferase Gene Polymorphisms and Expression on Bladder Cancer: Evidence from a Systematic Review, Meta-analysis and TCGA Dataset
    Yuxuan Song, Donghui Jin, Jingyi Chen, Wanfeng Liang, Xiaoqiang Liu
    Toxicological Sciences.2020; 177(1): 27.     CrossRef
  • Associations between TLR4 Polymorphisms and Open Angle Glaucoma: A Meta-Analysis
    Zhongjing Lin, Shouyue Huang, Jun Sun, Bing Xie, Yisheng Zhong
    BioMed Research International.2019; 2019: 1.     CrossRef
Original Articles
Impaired fasting glucose, single-nucleotide polymorphisms, and risk for colorectal cancer in Koreans
Keum Ji Jung, Miyong To Kim, Sun Ha Jee
Epidemiol Health. 2016;38:e2016002.   Published online January 6, 2016
DOI: https://doi.org/10.4178/epih.e2016002
  • 16,091 View
  • 152 Download
  • 9 Web of Science
  • 8 Crossref
AbstractAbstract AbstractSummary PDF
Abstract
OBJECTIVES
Numerous studies have demonstrated that fasting serum glucose (FSG) levels and certain single-nucleotide polymorphisms (SNPs) are related to an increased risk of colorectal cancer (CRC); however, their combined effects are still unclear.
METHODS
Of a total of 144,527 men and women free of cancer at baseline, 317 developed CRC during 5.3 years of follow-up. A case-cohort study (n=1,691) was used, consisting of participants with a DNA sample available. Three well-known SNPs (rs3802842, rs6983267, rs10795668) were genotyped. Hazard ratios (HR) and 95% confidence intervals (CI) of CRC, colon and rectal cancer were calculated, with the Cox proportional hazard models.
RESULTS
The crude incidence rates per 100,000 person-years were 41.1 overall, 48.4 for men, and 29.3 for women. Among participants with dysglycemia, SNPs rs3802842 and rs6983267 were both associated with an increased risk of CRC (HR, 3.2; 95% CI, 1.9 to 5.5 and HR, 1.8; 95% CI, 1.1 to 3.1, respectively) and rectal cancer (HR, 3.4; 95% CI, 1.8 to 6.6 and HR, 3.3; 95% CI, 1.6 to 7.1, respectively). The interaction effect of dysglycemia and SNPs was positive, that is, resulted in an elevated risk of CRC, but was not statistically significant.
CONCLUSIONS
This study demonstrates that both high FSG and certain SNPs are major risk factors for CRC and rectal cancer but that they did not interact synergistically. The difference in effect size of the SNPs according to CRC subtype (i.e., colon or rectal cancer) and presence of dysglycemia merits further research.
Summary
Korean summary
본 연구에서는 공복혈당농도와 대장암과 관련된 단일염기다형성(SNP)과의 관련성을 살펴 보았다. 높은 공복혈당농도와 단일염기다형성(SNP_rs3802842, rs6983267)은 대장암의 주요한 위험요인이었으나, 두 가지 요인의 상호작용으로 인한 시너지 효과는 없는 것으로 나타났다. 대장암의 아형에 따른 다른 효과 크기와 이상혈당증 유무에 따른 향후 연구가 더 필요할 것으로 생각된다.

Citations

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  • Glycemic traits and colorectal cancer survival in a cohort of South Korean patients: A Mendelian randomization analysis
    So Yon Jun, Sooyoung Cho, Min Jung Kim, Ji Won Park, Seung‐Bum Ryoo, Seung Yong Jeong, Kyu Joo Park, Aesun Shin
    Cancer Medicine.2024;[Epub]     CrossRef
  • The effect of pain-education nursing based on a mind map on postoperative pain score and quality of life in patients with colorectal cancer
    Shan Li, Xiaohong Zhu, Lihua Zhang, Cui Huang, Dan Li
    Medicine.2023; 102(19): e33562.     CrossRef
  • The lncRNA CCAT2 Rs6983267 G Variant Contributes to Increased Sepsis Susceptibility in a Southern Chinese Population
    Zhiyuan Wu, Yufeng Liang, Yunlong Zuo, Yufen Xu, Hanran Mai, Lei Pi, Di Che, Xiaoqiong Gu
    Infection and Drug Resistance.2021; Volume 14: 2969.     CrossRef
  • Distinct Patterns of Interleukin-12/23 and Tumor Necrosis Factor α Synthesis by Activated Macrophages are Modulated by Glucose and Colon Cancer Metabolites
    Ching-Ying Huang, Linda Chia-Hui Yu
    Chinese Journal of Physiology.2020; 63(1): 7.     CrossRef
  • Glucose Metabolites Exert Opposing Roles in Tumor Chemoresistance
    Chung-Yen Huang, Ching-Ying Huang, Yu-Chen Pai, Been-Ren Lin, Tsung-Chun Lee, Pi-Hui Liang, Linda Chia-Hui Yu
    Frontiers in Oncology.2019;[Epub]     CrossRef
  • Association among genetic variants in the vitamin D pathway and circulating 25-hydroxyvitamin D levels in Korean adults: results from the Korea National Health and Nutrition Examination Survey 2011–2012
    So-Young Kwak, Clara Yongjoo Park, Garam Jo, Oh Yoen Kim, Min-Jeong Shin
    Endocrine Journal.2018; 65(9): 881.     CrossRef
  • Body mass index and incidence of thyroid cancer in Korea: the Korean Cancer Prevention Study-II
    Hyun-Young Shin, Yong Ho Jee, Eo Rin Cho
    Journal of Cancer Research and Clinical Oncology.2017; 143(1): 143.     CrossRef
  • Heart Rate Recovery and Cancer Risk: Prospective Cohort Study
    Yong Hyun Byun, Sang Yeun Kim, Yejin Mok, Youngwon Kim, Sun Ha Jee
    Asia Pacific Journal of Public Health.2017; : 101053951774563.     CrossRef
ADIPOQ Gene Variants Associated with Susceptibility to Obesity and Low Serum Adiponectin Levels in Healthy Koreans
Ji Wan Park, Jungyong Park, Sun Ha Jee
Epidemiol Health. 2011;33:e2011003.   Published online April 25, 2011
DOI: https://doi.org/10.4178/epih/e2011003
  • 17,389 View
  • 123 Download
  • 17 Crossref
AbstractAbstract PDF
Abstract
<sec><title>OBJECTIVES</title><p>This study aimed to measure the association between the adiponectin, C1Q and collagen domain-containing (<italic>ADIPOQ</italic>) gene variants and obesity in Koreans.</p></sec><sec><title>METHODS</title><p>Three single nucleotide polymorphisms located in the <italic>ADIPOQ</italic> gene were genotyped in a population-based cross-sectional study of 986 healthy Koreans. Three different case-control groups (i.e. G1, G2, and G3) were defined according to body mass index (BMI) and serum adiponectin levels. Allelic and genotypic associations of this gene with obesity were measured using multivariate logistic regression analyses in each group.</p></sec><sec><title>RESULTS</title><p>The G allele of -11377C>G, a polymorphism located in the promoter region of the <italic>ADIPOQ</italic> gene (odds ratio (OR), 1.48; 95% confidence interval, 1.13-1.94) and most haplotypes including this allele significantly increased the risk for obesity. However, the OR decreased from 3.98 (G1 group) to 2.90 (G2 group) and 2.30 (G3 group) when a less strict definition of obesity was used. Most haplotypes, including this allele, significantly increased the risk of obesity. The statistical evidence from the GG genotype of -11377C>G (OR, 3.98) and the GT/GT diplotype composed of -11377G>C and +45T>G (OR, 5.20) confirmed the contribution of the G allele toward a predisposition for obesity.</p></sec><sec><title>CONCLUSION</title><p>These results suggest the contribution of the <italic>ADIPOQ</italic> gene toward susceptibility to obesity in healthy Koreans. The high-risk genotypes and haplotypes identified here may provide more information for identifying individuals who are at risk of obesity.</p></sec>
Summary

Citations

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  • Risk variants of obesity associated genes demonstrate BMI raising effect in a large cohort
    Muhammad Saqlain, Madiha Khalid, Muhammad Fiaz, Sadia Saeed, Asad Mehmood Raja, Muhammad Mobeen Zafar, Tahzeeb Fatima, João Bosco Pesquero, Cristina Maglio, Hadi Valadi, Muhammad Nawaz, Ghazala Kaukab Raja, Nidaa Ababneh
    PLOS ONE.2022; 17(9): e0274904.     CrossRef
  • Association of the ADIPOQ-AS LncRNA polymorphism rs2241766 with obesity: A Meta-analysis
    M.N. Ammar, L. Lipovich, R.M. Ali, M.A. Amelina, T.P. Shkurat
    Human Gene.2022; 34: 201114.     CrossRef
  • Common Variants in Lipid Metabolism–Related Genes Associate with Fat Mass Changes in Response to Dietary Monounsaturated Fatty Acids in Adults with Abdominal Obesity
    Shatha S Hammad, Peter Eck, Jyoti Sihag, Xiang Chen, Philip W Connelly, Benoît Lamarche, Patrick Couture, Valérie Guay, Julie Maltais-Giguère, Sheila G West, Penny M Kris-Etherton, Kate J Bowen, David J A Jenkins, Carla G Taylor, Danielle Perera, Angela W
    The Journal of Nutrition.2019; 149(10): 1749.     CrossRef
  • Associations between polymorphisms of the ADIPOQ gene and hypertension risk: a systematic and meta-analysis
    Weina Fan, Xiaowei Qu, Jing Li, Xingning Wang, Yanping Bai, Qingmei Cao, Liqun Ma, Xiaoyao Zhou, Wei Zhu, Wei Liu, Qiang Ma
    Scientific Reports.2017;[Epub]     CrossRef
  • An Updated Systematic Review and Meta-analysis of Association Between Adiponectin Gene Polymorphisms and Coronary Artery Disease
    Haifeng Hou, Siqi Ge, Linlin Zhao, Chenglin Wang, Wei Wang, Xuezhen Zhao, Zheng Sun
    OMICS: A Journal of Integrative Biology.2017; 21(6): 340.     CrossRef
  • Change in Weight and Body Mass Index Associated With All-Cause Mortality in Korea: A Nationwide Longitudinal Study
    Yang-Hyun Kim, Seon Mee Kim, Kyung-do Han, Jang-Won Son, Seong-Su Lee, Sang Woo Oh, Won-Young Lee, Soon Jib Yoo
    The Journal of Clinical Endocrinology & Metabolism.2017; 102(11): 4041.     CrossRef
  • A Validation Study of Adiponectin rs266729 Gene Variant with Type 2 Diabetes, Obesity, and Metabolic Phenotypes in a Taiwanese Population
    Tun-Jen Hsiao, Eugene Lin
    Biochemical Genetics.2016; 54(6): 830.     CrossRef
  • ADIPOQ and IL6 variants are associated with a pro-inflammatory status in obeses with cardiometabolic dysfunction
    Raquel de Oliveira, Tamiris Invencioni Moraes, Alvaro Cerda, Mario Hiroyuki Hirata, Cristina Moreno Fajardo, Marcela Correia Sousa, Egidio Lima Dorea, Márcia Martins Silveira Bernik, Rosario Dominguez Crespo Hirata
    Diabetology & Metabolic Syndrome.2015;[Epub]     CrossRef
  • Metabolic abnormalities in young Egyptian women with polycystic ovary syndrome and their relation to ADIPOQ gene variants and body fat phenotype
    Moushira Zaki, Shams Kholoussi, Somaia Ismail, Haiam Abdel Raouf, Iman Helwa, Naglaa Hassan, Eman Youness, Nadia A. Mohamed, Sanaa Kamal, Walaa Yousef, Mohamed Shaker, Wafaa Ezzat, Yasser A. Elhosary, Omnia M. Saleh, Mona El Gammal, HalaT. El-Bassyouni, S
    Egyptian Journal of Medical Human Genetics.2015; 16(4): 367.     CrossRef
  • Gender-specific associations between ADIPOQ gene polymorphisms and adiponectin levels and obesity in the Jackson Heart Study cohort
    Pia Riestra, Samson Y. Gebreab, Ruihua Xu, Rumana J. Khan, Aurelian Bidulescu, Adolfo Correa, Fasil Tekola-Ayele, Sharon K. Davis
    BMC Medical Genetics.2015;[Epub]     CrossRef
  • Association of ADIPOQ polymorphisms with obesity risk: A meta-analysis
    Jie-fu Lu, You Zhou, Gui-hua Huang, Hai-xing Jiang, Bang-li Hu, Shan-yu Qin
    Human Immunology.2014; 75(10): 1062.     CrossRef
  • Polymorphisms of the adiponectin gene in gestational hypertension and pre-eclampsia
    J S R Machado, A C T Palei, L M Amaral, A C Bueno, S R Antonini, G Duarte, J E Tanus-Santos, V C Sandrim, R C Cavalli
    Journal of Human Hypertension.2014; 28(2): 128.     CrossRef
  • Effect of the ADIPOQ Gene -11391G/A Polymorphism Is Modulated by Lifestyle Factors in Mexican Subjects
    Maritza Roxana Garcia-Garcia, María Antonieta Morales-Lanuza, Wendy Yareny Campos-Perez, Bertha Ruiz-Madrigal, Monserrat Maldonado-Gonzalez, Barbara Vizmanos, Ivan Hernandez-Cañaveral, Irinea Yañez-Sanchez, Sonia Roman, Arturo Panduro, Erika Martinez-Lope
    Lifestyle Genomics.2014; 7(4-6): 212.     CrossRef
  • Adiponectin gene polymorphisms may not be associated with idiopathic premature ovarian failure
    Yuqin Ye, Danhua Pu, Jiayin Liu, Fanghong Li, Yugui Cui, Jie Wu
    Gene.2013; 518(2): 262.     CrossRef
  • Adiponectin Level and Gene Variability Are Obesity and Metabolic Syndrome Markers in a Young Population
    Ivana Karmelić, Jasna Lovrić, Tamara Božina, Hana Ljubić, Željka Vogrinc, Nada Božina, Jadranka Sertić
    Archives of Medical Research.2012; 43(2): 145.     CrossRef
  • Single-nucleotide polymorphisms and haplotypes in the adiponectin gene contribute to the genetic risk for type 2 diabetes in Tunisian Arabs
    Nabil Mtiraoui, Intissar Ezzidi, Amira Turki, Arbi Chaieb, Touhami Mahjoub, Wassim Y. Almawi
    Diabetes Research and Clinical Practice.2012; 97(2): 290.     CrossRef
  • Associations of adiponectin gene polymorphisms with polycystic ovary syndrome: a meta-analysis
    Hongxia Jia, Lili Yu, Xuxiao Guo, Wei Gao, Zhaoshun Jiang
    Endocrine.2012; 42(2): 299.     CrossRef
No Association Between Functional Polymorphisms in COMT and MTHFR and Schizophrenia Risk in Korean Population
Ho Jin Kang, Byeong Moo Choe, Seong Hwan Kim, Seung-Rak Son, Kyoung-Mu Lee, Byoung Gwon Kim, Young-Seoub Hong
Epidemiol Health. 2010;32:e2010011.   Published online December 24, 2010
DOI: https://doi.org/10.4178/epih/e2010011
  • 18,147 View
  • 130 Download
  • 13 Crossref
AbstractAbstract PDF
Abstract
<sec><title>OBJECTIVES</title><p>Common genetic SNPs in two genes, encoding catechol-O-methyltransferase (COMT) and methylenetetrahydrofolate reductase (MTHFR), which are interconnected with COMT gene regulation, have been reported to contribute to schizophrenia risk. In this study, we evaluated the association between functional polymorphisms in COMT and MTHFR and schizophrenia risk with a case-control study in a Korean population.</p></sec><sec><title>METHODS</title><p>We performed a case-control study by genotyping analysis using 360 cases and 348 controls in Korean subjects to determine the association between functional polymorphisms in COMT and MTHFR and schizophrenia risk.</p></sec><sec><title>RESULTS</title><p>Four functional SNPs in COMT (Val158Met and rs165599) and MTHFR (C677T and A1298C) were genotyped by primer extension assay. None of the genotype distributions for the four SNPs was significantly different between cases and controls. Stratified analysis did not show any significant gender difference for any polymorphism. In addition, we found no evidence of a gene-gene interaction in the analysis of combined genotypes.</p></sec><sec><title>CONCLUSION</title><p>Our results suggest no significant association between the selected functional polymorphisms of COMT or MTHFR in Korean schizophrenia subjects. However, further studies are required to confirm our findings in a larger number of subjects.</p></sec>
Summary

Citations

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  • Molecular Mechanisms Provide a Landscape for Biomarker Selection for Schizophrenia and Schizoaffective Psychosis
    Stephanie Fryar-Williams, Jörg Strobel, Peter Clements
    International Journal of Molecular Sciences.2023; 24(20): 15296.     CrossRef
  • Association between MTHFR (677C>T and 1298A>C) polymorphisms and psychiatric disorder: A meta-analysis
    Xinyao Meng, Ji-long Zheng, Mao-ling Sun, Hai-yun Lai, Bao-jie Wang, Jun Yao, Hongbo Wang, Zezhi Li
    PLOS ONE.2022; 17(7): e0271170.     CrossRef
  • Association between variants of MTHFR genes and psychiatric disorders: A meta-analysis
    Yu-Xin Zhang, Lu-Ping Yang, Cong Gai, Cui-Cui Cheng, Zhen-yu Guo, Hong-Mei Sun, Die Hu
    Frontiers in Psychiatry.2022;[Epub]     CrossRef
  • MTHFR Ala222Val polymorphism and clinical characteristics confer susceptibility to suicide attempt in chronic patients with schizophrenia
    Jia Hong Liu, Cheng Zhu, Ke Zheng, Wei Tang, Li Li Gao, Tammy H. Trihn, Hanjing Emily Wu, Da Chun Chen, Mei Hong Xiu, Xiang Yang Zhang
    Scientific Reports.2020;[Epub]     CrossRef
  • Effort-related decision making in humanized COMT mice: Effects of Val158Met polymorphisms and possible implications for negative symptoms in humans
    Jen-Hau Yang, Rose E. Presby, Suzanne Cayer, Renee A. Rotolo, Peter A. Perrino, R. Holly Fitch, Merce Correa, Elissa J. Chesler, John D. Salamone
    Pharmacology Biochemistry and Behavior.2020; 196: 172975.     CrossRef
  • Association of functional polymorphisms in 3′-untranslated regions of COMT, DISC1, and DTNBP1 with schizophrenia
    Zahra I. Mohamed, Shiau F. Tee, Pek Y. Tang
    Psychiatric Genetics.2018; 28(6): 110.     CrossRef
  • Role of MTHFR C677T gene polymorphism in the susceptibility of schizophrenia: An updated meta-analysis
    Upendra Yadav, Pradeep Kumar, Sanjay Gupta, Vandana Rai
    Asian Journal of Psychiatry.2016; 20: 41.     CrossRef
  • The Role of a Catechol-O-Methyltransferase (COMT) Val158Met Genetic Polymorphism in Schizophrenia: A Systematic Review and Updated Meta-analysis on 32,816 Subjects
    Thelma Beatriz González-Castro, Yazmin Hernández-Díaz, Isela Esther Juárez-Rojop, María Lilia López-Narváez, Carlos Alfonso Tovilla-Zárate, Ana Fresan
    NeuroMolecular Medicine.2016; 18(2): 216.     CrossRef
  • Evaluation of an association between plasma total homocysteine and schizophrenia by a Mendelian randomization analysis
    Shusuke Numata, Makoto Kinoshita, Atsushi Tajima, Akira Nishi, Issei Imoto, Tetsuro Ohmori
    BMC Medical Genetics.2015;[Epub]     CrossRef
  • Catechol-O-methyltransferase gene polymorphisms in Saudi cases with schizophrenia
    Ashraf Tantawy, Abduhamid Al-Yahia, Yasser Raya, Abdurrahman Al-Mohaimeed, Ahmad Settin
    Egyptian Journal of Psychiatry.2015; 36(3): 118.     CrossRef
  • Association of MTHFR C677T polymorphism with schizophrenia and its effect on episodic memory and gray matter density in patients
    Yanling Zhang, Hao Yan, Lin Tian, Fang Wang, Tianlan Lu, Lifang Wang, Jun Yan, Qi Liu, Lan Kang, Yanyan Ruan, Dai Zhang, Weihua Yue
    Behavioural Brain Research.2013; 243: 146.     CrossRef
  • Genetic Variation Throughout the Folate Metabolic Pathway Influences Negative Symptom Severity in Schizophrenia
    J. L. Roffman, D. G. Brohawn, A. Z. Nitenson, E. A. Macklin, J. W. Smoller, D. C. Goff
    Schizophrenia Bulletin.2013; 39(2): 330.     CrossRef
  • No Association of Functional Polymorphisms in Methlylenetetrahydrofolate Reductase and the Risk and Minor Physical Anomalies of Schizophrenia in Korean Population
    Su-Gyeong Kim, Joo Yun Song, Eun-Jeong Joo, Seong Hoon Jeong, Se Hyun Kim, Kyu Young Lee, Nam Young Lee, Yong Min Ahn, Yong Sik Kim, Myoung-Sun Roh
    Journal of Korean Medical Science.2011; 26(10): 1356.     CrossRef
The Role of Genetic Polymorphism of Cytochrome P450 2E1 in Bladder Cancer in Korea.
Jiyeob Choi, Seungjoon Lee, Kyoungmu Lee, Inmi Choi, Youngju Lee, Hyungjune Im, Sang Yun Lee, Kijung Yoon, Sooung Kim, Moonsoo Park, Hanyong Choi, Whang Choi, Keunyoung Yoo, Soohun Cho, Daehee Kang
Korean J Epidemiol. 2000;22(1):59-67.
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AbstractAbstract PDF
Abstract
Although the association of genetic polymorphisms in glutathione S-transferase(GST) and N-acetyltransferase(NAT) with bladder cancer has been reported, limited numbers of studies have been indicated the association of CYP2E1 with bladder cancer, particularly in Asian population. A hospital based case-control study was conducted in South Korean, consisting of 232 histologically confirmed prevalent bladder cancer cases and 165 controls to evaluate the association between genetic polymorphisms of CYP2E1(RsaI) and development of bladder cancer. The frequency of CYP2E1(RsaI) c1/c1 genotype in bladder cancer cases was higher than in controls; 114 of 201(56.7%) vs. 62 of 146(42.5%). Men with CYP2E1(RsaI) c1/c1 genotype had increased risk of development of bladder cancer compared to men with at least one c2 allele(OR=1.7, 95% CI=1.1-2.7). The bladder cancer risk increased as the number of c1 allele increased(p for trend=0.005). The risk increased as the amount of smoking increased(p for trend=0.009). When data were analyzed for the interaction between smoking and CYP2E1 genetic polymorphisms, smokers with c1/c1 genotype have 2.5 greater risk in development of bladder cancer(95% CI=1.0-6.2) compared to nonsmokers with c2 allele(p for interaction=0.008). Our findings suggest that the interaction between genetic polymorphisms of CYP 2E1 (RsaI, c1/c1) and smoking may play an important role for development of bladder cancer among Koreans.
Summary
Glutathione S-transferase(GST) M1 and T1 Genetic Polymorphism in Benign Breast Disorders of Korean Women.
Sue Kyung Park, Mina Ha, Sook Un Kim, Daehee Kang, Keun Young Yoo
Korean J Epidemiol. 2000;22(1):52-58.
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AbstractAbstract PDF
Abstract
PURPOSE
A hospital-based case-control study was conducted to evaluate the role of glutathione-S-transferase(GST)M1 and GSTT1 genetic polymorphism for developing benign breast disorders(fibrocystic diseases and fibroadenoma) in Korea. MATERIALS AND METHODS: Histologically confirmed incident cases of benign breast disorder(n=56) were selected from inpatients at the Department of General Surgery, Seoul National University Hospital since 1994. Women with free of self-reporting past history of any malignancies were regarded as controls who were selected from the inpatients at the same department at three hospitals during 1994 to 1998(n=180). Information on life-styles including reproductive factors were obtained by direct interview using questionnaire. Age and menopausal status were matched and 51 cases and 102 controls were finally selected. Odds ratio and 95% confidence interval were estimated by multiple logistic regression after adjusting for age, education, body mass index, smoking history, drinking history, menstrual regularity, age at menarch, age at first pregnancy, frequency of fullterm pregnancy, breast feeding history, duration of breast feeding, and family history of breast cancer.
RESULTS
GSTM1-null type showed no significance related to the risk of benign breast disorder(adjusted OR=0.8, 95% CI=0.38-1.83) and GSTT1-null type was also not significant(adjusted OR=1.4, 95% CI=0.63-3.29). Increasing tendency of disease risk by the number of GSTs null type was not observed (ptrend>0.1) after adjusting for all other variables.
DISCUSSIONS
Further investigation with larger sample size should be needed to provide more concrete information on the role of GST genetic polymorphism in benign breast cancer and a lots of studies relation in normal level of GST genetic polymorphism in general population should be performed.
Summary

Epidemiol Health : Epidemiology and Health