Abstract
Prostate cancer is the second cause of cancer death in Brazilian men. One of the relevant phenomena to the inherited susceptibility is the presence of allelic variants in genes involved with the DNA repair pathway. The aim of this study was to analyze the frequencies of prevalent, heterozygous and rare genotypes of the base excision repair genes APEX1 and XRCC1 in a case–control study and relate the genotypes with tumoral aggressiveness. DNA from peripheral blood of 172 patients and 172 controls were analyzed by RFLP-PCR method. The polymorphisms were also evaluated in relation to clinical and pathological parameters. The OR (Odds Ratio) and confidence interval (CI = 95%) were used in the association study and the Chi-square and ANOVA tests for the evaluation of histopathological parameters. The rare genotypes frequencies of the gene APEX1 increased the risk for the development of prostate cancer (OR = 1.68 95% CI 1.10–2.58). No association was found for the gene XRCC1 (OR = 0.82 95% CI 0.53–1.27). The combined analysis for both genes did not show association with this neoplasia (OR = 1.27 95% CI 0.79–20.5). The relationship of XRCC1 and APEX1 genotypes with cancer aggressiveness through the correlation with histopathological parameters, did not find any association. Our results suggest that the polymorphism in the gene APEX1 may be indicated as a potential marker for prostate cancer risk.
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Acknowledgments
This work was supported by Fundação Araucária. The authors would like to thank the CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) for supporting fellowships of Kuasne H. and Rodrigues IS, CNPq/PQ (Conselho Nacional de Desenvolvimento Científico e Tecnológico) for awarding a grant to Cólus IMS and to the Hospital do Câncer de Londrina (HCL), Irmandade Santa Casa de Londrina and CISMEPAR for the samples from patients and controls.
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All the authors of this article declare have no conflict of interest.
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Kuasne, H., Rodrigues, I.S., Losi-Guembarovski, R. et al. Base excision repair genes XRCC1 and APEX1 and the risk for prostate cancer. Mol Biol Rep 38, 1585–1591 (2011). https://doi.org/10.1007/s11033-010-0267-z
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DOI: https://doi.org/10.1007/s11033-010-0267-z