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Pediatr Infect Dis J. 2014 May;33(5):518-21. doi: 10.1097/INF.0000000000000229.

Polymorphisms in IL-6, IL-10, TNF-α, IFN-γ and TGF-β1 genes and susceptibility to acute otitis media in early infancy.

Author information

1
From the *Department of Pediatrics, †Laboratory of Molecular Medicine and Human Genetics, and ‡Department of Internal Medicine, University of Crete, Heraklion, Greece.

Abstract

BACKGROUND:

Genetic susceptibility has a major role in the pathogenesis of acute otitis media (AOM). In the present study, we investigated the variability of 5 cytokine genotypes as related to susceptibility and outcome of AOM in early infancy.

METHODS:

Single nucleotide polymorphisms in IL-6 (-174 G→C), IL-10 (-592 C→A, -819 C→T and -1082 G→A), TNF-α (-308 G→A), IFN-γ (+874 A→T) and TGF-β1 (codon 10 C→T; codon 25 G→C) genes were investigated and related to clinical course and outcome in 96 infants younger than 9 months with AOM.

RESULTS:

Compared with wild genotypes, IL-10 (-592, -819 and -1082) and TGF-β1 (codon 10) genotypes carrying the alternative allele were related to more AOM episodes (P < 0.0001, P < 0.0001, P < 0.0001 and P = 0.002, respectively) and the need for tympanostomy tubes. Furthermore, IL-10 (-1082) and TGF-β1 (codon 10) genotypes carrying the alternative allele were related to later onset of first AOM episode than wild-type genotypes (P = 0.007 and P = 0.039, respectively). No relationship was found about AOM complications.

CONCLUSIONS:

Our findings suggest that IL-10 and TGF-β1 genotypes are related to the age of AOM onset, multiple AOM episodes and insertion of tympanostomy tubes, pointing to the involvement of anti-inflammatory cytokines in AOM during infancy.

PMID:
24463810
DOI:
10.1097/INF.0000000000000229
[Indexed for MEDLINE]

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