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  • Title: IL-10 gene polymorphism c.-592C>A increases HPV infection susceptibility and influences IL-10 levels in HPV infected women.
    Author: Berti FCB, Pereira APL, Trugilo KP, Cebinelli GCM, Silva LFDRS, Lozovoy MAB, Simão ANC, Watanabe MAE, de Oliveira KB.
    Journal: Infect Genet Evol; 2017 Sep; 53():128-134. PubMed ID: 28552689.
    Abstract:
    Interleukin-10 (IL-10) influences HPV infection and viral persistence, favoring cervical immunosuppression and cervical carcinogenesis. IL-10 levels may be influenced by HPV itself and by IL-10 polymorphisms, including rs1800872 (c.-592C>A). Therefore, we evaluated the influence of IL-10 c.-592C>A polymorphism in HPV infection and in IL-10 plasmatic/cervical levels in HPV infected and non-infected women. The study included 174 infected and 186 non-infected patients. Cervical epithelial scrapings were obtained to determine HPV DNA presence PCR. Peripheral blood samples were obtained to determine IL-10 polymorphism by PCR-RFLP, while IL-10 levels were assessed by ELISA. HPV was more prevalent among allele A carriers (p<0.001), with IL-10 c.-592C>A polymorphism being associated with HPV infection. As demonstrated by binary logistic regression analysis, heterozygotes [ORadj=2.081 95% CI (1.222-3.544), p=0.007] and homozygotes [ORadj=3.745 95% CI (1.695-8.271), p=0.001] showed approximately 2 and 4 time's greater odds, respectively, of presenting HPV when compared to CC patients. Moreover, HPV infected patients carrying polymorphic allele A showed higher IL-10 cervical levels (p=0.039). Binary logistic regression analysis demonstrated that IL-10 cervical levels were not independently associated to CA+AA genotypes (p=0.162), neither to HPV's presence (p=0.061), thus IL-10 cervical levels are possibly increased because of both HPV and allele A presence. Taken together, these findings suggest that IL-10 c.-592C>A polymorphism is independently associated with HPV infection susceptibility exerting influence on IL-10 cervical levels in HPV infected women, thus contributing to cervical carcinogenesis.
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