| Polymorphisms of DNA repair and xenobiotic genes predispose to CpG island methylation in non-neoplastic gastric mucosa. | |
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MedLine Citation:
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PMID: 21435086 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Background: Genetic factors, related to DNA repair or xenobiotic pathways might confer different degrees of susceptibility to gastric carcinogenesis. CpG island hyper methylation (CIHM) is a major event in gastric carcinogenesis. We evaluated the association between XRCC1, GSTP1, GSTT1 and GSTM1 polymorphisms with CIHM status in non-neoplastic gastric mucosa. Methods: XRCC1 Arg399Gln, and Arg194Trp, GSTP1 Ile104Val, and GSTT1, GSTM1 null polymorphisms were genotyped in 415 cancer free subjects, in relation to four candidate CpG (p14, p16, DAP-kinase and CDH1) loci, assessed by Methylation-Specific-Polymerase Chain Reaction (MSP). CIHM high was defined as two or more CpG islands methylated. Results: Significant association between XRCC1 codon 399 Gln/Gln genotype and reduced susceptibility to CIHM of DAP-kinase (adjusted OR = 0.30, 95%CI = 0.13-0.71, p = .0055) and CIHM high (OR = 0.42, 95%CI = 0.19-0.97, p = .04). XRCC1 codon 399 Gin/Gln genotype also presented lower number of CIHM when compared with both Arg/Gln, and Arg/Arg + Arg/Gln genotypes (p = .02, .046, respectively) When subjects were divided according to age (>50 and <50), an association was found between GSTM1 null genotype and increased susceptibility to CIHM high in the 50 years and older generations (OR = 1.63, 95%CI = 1.01-2.62, p = .045). Conclusion: XRCC1 codon 399 Gln/Gln genotype is associated with reduced susceptibility to CIHM especially DAP-kinase. GSTM1 null genotype may increase the susceptibility to CIHM especially in older patients. Genetic factors, related to DNA repair or xenobiotic pathways may have a role in CIHM-related gastric carcinogenesis. |
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Authors:
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Tomomitsu Tahara; Tomoyuki Shibata; Masakatsu Nakamura; Masaaki Okubo; Hiromi Yamashita; Daisuke Yoshioka; Joh Yonemura; Takamitsu Ishizuka; Ichiro Hirata; Tomiyasu Arisawa |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Helicobacter Volume: 16 ISSN: 1523-5378 ISO Abbreviation: Helicobacter Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9605411 Medline TA: Helicobacter Country: United States |
Other Details:
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Languages: eng Pagination: 99-106 Citation Subset: IM |
Copyright Information:
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© 2011 Blackwell Publishing Ltd. |
Affiliation:
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Department of Gastroenterology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan Department of Gastroenterology, Kanazawa Medical University, 1-1 Daigaku, Uchinadamachi, Ishikawa 920-0293, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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