Author:
Araujo Warlen Miiller Rocha,Ayo Christiane Maria,Previato Mariana,de Faria Geraldo Magela,Frederico Fábio Batista,Siqueira Rubens Camargo,de Almeida Gildásio Castello,Pereira-Chioccola Vera Lúcia,de Mattos Luiz Carlos,Brandão Cinara Cássia
Abstract
IntroductionOcular toxoplasmosis (OT) is an intraocular inflammation caused by Toxoplasma gondii infection that affects the retina and choroid, giving rise to posterior uveitis. Genetic polymorphisms in cytokine genes may exert influence in the expression of these molecules and play a significant role in inflammatory responses and susceptibility to OT. The aim of this study was to evaluate the role of polymorphisms rs16944 (–511 C > T) of the interleukin (IL) 1β gene and rs1800896 (–1082 G > A) of the IL10 gene on OT in Brazilian individuals with a serologic diagnosis of T. gondii and after conducting fundoscopic exams.MethodsParticipants with a positive serology were classified into two distinct groups according to the presence (G1; n = 110) or absence (G2; n = 104) of OT. The control group (G3) consisted of individuals without the infection (n = 108).ResultsIt was observed that the C/C genotype of the IL1β gene polymorphism was a protective factor for OT (p = 0.02, OR = 0.28, 95% CI 0.08–0.78 for G1 vs. G2; p = 0.03; OR = 0.29, 95% CI 0.09–0.82 for G1 vs. G3), according to the recessive inheritance model.ConclusionsThe -511C.T polymorphisms of the IL1β gene seems to play an important role in the pathogenesis of OT in Brazilian individuals.
Funder
Fundação de Amparo à Pesquisa do Estado de São Paulo
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior