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          <dc:title>PTGS Polymorphisms and NSAIDs on Cancer Risk</dc:title>
          <dc:title>A Meta-Analysis of PTGS1 and PTGS2 Polymorphisms and NSAID Intake on the Risk of Developing Cancer</dc:title>
          <dc:creator>Nagao, Mai</dc:creator>
          <dc:creator>佐藤, 陽一</dc:creator>
          <dc:creator>1215</dc:creator>
          <dc:creator>サトウ, ヨウイチ</dc:creator>
          <dc:creator>73845/profile-ja.html</dc:creator>
          <dc:creator>Sato, Youichi</dc:creator>
          <dc:creator>10363160</dc:creator>
          <dc:creator>山内, あい子</dc:creator>
          <dc:creator>1147</dc:creator>
          <dc:creator>ヤマウチ, アイコ</dc:creator>
          <dc:creator>60647/profile-ja.html</dc:creator>
          <dc:creator>Yamauchi, Aiko</dc:creator>
          <dc:creator>30122253</dc:creator>
          <dc:description>Background: Several studies have investigated whether the polymorphisms in the prostaglandin endoperoxide synthase 1 (PTGS1) and PTGS2 genes and nonsteroidal anti-inflammatory drug (NSAID) use are associated with cancer risk; however, those studies have produced mixed results. Therefore, we performed a meta-analysis to evaluate the association between the PTGS1 and PTGS2 polymorphisms and the effect of NSAID use on the risk of developing cancer.
Methods: We conducted a comprehensive search in PubMed through March 2012. The odds ratios (ORs) with the corresponding 95% confidence intervals (CIs) were calculated using the fixed-effect model or the random-effect model.
Results: The database search generated 13 studies that met the inclusion criteria. For PTGS1 rs3842787, NSAID users homozygous for the major allele (CC) had a significantly decreased cancer risk compared with non-NSAID users (OR = 0.73, 95% CI = 0.59–0.89). For PTGS2 rs5275 and rs20417, there were no significant differences between the gene polymorphism and NSAID use on cancer risk among the 8 and 7 studies, respectively. However, in the stratified analysis by the type of cancer or ethnicity population, NSAID users homozygous for the major allele (TT) in rs5275 demonstrated significantly decreased cancer risk compared with non-NSAID users in cancer type not involving colorectal adenoma (OR = 0.70, 95% CI = 0.59–0.83) and among the USA population (OR = 0.67, 95% CI = 0.56–0.82). NSAID users homozygous for the major allele (GG) in rs20417 displayed a significantly decreased cancer risk than non-NSAID users among the US population (OR = 0.72, 95% CI = 0.58–0.88). For the PTGS2 rs689466 and rs2745557 SNPs, there were no significant differences.
Conclusion: This meta-analysis suggests that the associations between PTGS polymorphisms and NSAID use on cancer risk may differ with regard to the type of cancer and nationality.</dc:description>
          <dc:description>journal article</dc:description>
          <dc:publisher>PLOS</dc:publisher>
          <dc:date>2013-08-13</dc:date>
          <dc:type>VoR</dc:type>
          <dc:format>application/pdf</dc:format>
          <dc:identifier>PLOS ONE</dc:identifier>
          <dc:identifier>8</dc:identifier>
          <dc:identifier>8</dc:identifier>
          <dc:identifier>e71126</dc:identifier>
          <dc:identifier>19326203</dc:identifier>
          <dc:identifier>https://tokushima-u.repo.nii.ac.jp/record/2000108/files/pone_8_8_e71126.pdf</dc:identifier>
          <dc:identifier>https://tokushima-u.repo.nii.ac.jp/records/2000108</dc:identifier>
          <dc:language>eng</dc:language>
          <dc:rights>This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</dc:rights>
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