Polymorphisms of the Toll-Like Receptor-3 Gene in Autoimmune Adrenal Failure and Type 1 Diabetes in Polish Patients

Archivum Immunologiae Et Therapiae Experimentalis
M FichnaJ Nowak

Abstract

Infectious agents are plausible environmental triggers for autoimmunity in genetically susceptible individuals. Polymorphic variants of genes implicated in innate immunity may affect immune responses and hence promote auto-aggressive reactions. Genes such as Toll-like receptor-3 (TLR3), which participate in recognizing conserved foreign molecules and mounting the first line of defence against viral infections, are promising functional candidates in autoimmune conditions. We investigated the association of the TLR3 variants, rs13126816 and rs3775291, with the autoimmune endocrine disorders, Addison's disease (AD) and type 1 diabetes (T1D) in the Polish population. The study comprised 168 AD patients, 524 individuals with T1D and 592 healthy controls. Genotyping was performed by real-time PCR. Distribution of the TLR3 genotypes and alleles did not reveal significant differences between patients and controls (p > 0.05). No effect on age at disease onset was found in affected cohorts. This analysis does not support an association between TLR3 variants and the risk for autoimmune destruction of the adrenal cortex and beta cells. However, innate immunity merits further studies in autoimmune endocrine conditions.

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Methods Mentioned

BETA
PCR
genotyping

Software Mentioned

PS Power and Sample Size calculator
Sds2
SPSS
Haploview

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