The aim and objective of this study is to determine the association between the rs1800871, rs1800872, and rs1800896 polymorphisms of the gene IL-10 and the serum levels of IL-10 in patients with pituitary adenoma.
Methods: Data from 106 patients with pituitary adenoma and 192 control patients were used for the study. DNA was isolated from peripheral blood using the salt precipitation method. The samples were genotyped in real-time using the polymerase chain reaction method. IL-10 serum levels were evaluated using an ELISA kit. The data obtained were systematized using the computer program IBM SPSS Statistics.
Results: The AG genotype of IL-10 rs1800871 was statistically significantly lower in the inactive PA group than in the control group (22.7% vs. 40.6%, p = 0.027). The TG genotype of IL-10 rs1800872 was also statistically significantly lower in the inactive PA group than in the control group (22.7% vs. 40.6%, p = 0.027). A binary logistic regression analysis of the polymorphisms in the IL-10 gene in PA and control groups based on the pituitary adenoma activity showed that the AG genotype of IL-10 rs1800871 increased the chance of inactive PA by 2.2-fold in codominant (OR: 2.272, CI: 1.048-4.925, p = 0.038) and overdominant (OR: 2.326, CI: 1.086-4.982, p = 0.030) models. Moreover, the TG genotype of IL-10 rs1800872 increased the probability of inactive PA by 2.2-fold in codominant (OR: 2.272, CI: 1.048-4.925, p = 0.038) and overdominant (OR: 2.326, CI: 1.086-4.982, p = 0.030) models. The association of the IL-10 polymorphisms with PA invasiveness and recurrence in PA and control groups did not yield statistically significant results.
Conclusions: IL-10 rs1800871 and IL-10 rs1800872 may be associated with the development of inactive PA.
Keywords: IL-10 gene polymorphisms; IL-10 serum levels; pituitary adenoma.