Association of single nucleotide polymorphisms in pro-inflammatory cytokine and toll-like receptor genes with pediatric hematogenous osteomyelitis

Genet Mol Res. 2016 May 23;15(2). doi: 10.4238/gmr.15027718.

Abstract

Hematogenous osteomyelitis (HO) is a bone infection wherein bacteria penetrate to the bone through the blood stream. Several single nucleotide polymorphisms (SNPs) have been associated with susceptibility to infectious diseases. In this study, we investigated the contribution of SNPs in interleukin (IL)-1B1 (rs16944), IL1A (rs1800587), IL1B (rs1143634), toll-like receptor (TLR)-2 (rs3804099), TLR4 (rs4986790), TLR4 (rs4986791), IL1R (rs2234650), tumor necrosis factor (TNF)-α (rs1800629), TNF (rs361525), and IL1RN (rs315952) towards the development of HO in Saudi patients and compared to healthy controls. Fifty-two patients diagnosed with HO and 103 healthy individuals were genotyped. The frequencies of genotypes GG (rs16944) and AA (rs16944) were lower and higher in patients [odds ratio (OR) = 0.34, Pc = 0.05] and controls (OR = 1.33, Pc = 0.05), respectively, suggesting that SNPs at this locus could alter HO susceptibility. In addition, the patients and controls exhibited lower and higher frequencies of the alleles G (rs16944) (OR = 0.43, Pc = 0.007) and A (rs16944) (OR = 2.32, Pc = 0.007), respectively. The expression of alleles C (rs3804099) and T (rs3804099) were higher in patients (OR = 2.05, Pc = 0.04) and controls (OR = 0.49, Pc = 0.04), respectively. In conclusion, SNPs at rs16944 and rs3804099 were found to be associated with HO in the Saudi population.

MeSH terms

  • Alleles
  • Female
  • Gene Frequency
  • Genetic Predisposition to Disease*
  • Genotype
  • Haplotypes
  • Humans
  • Interleukin 1 Receptor Antagonist Protein / genetics
  • Interleukin-1alpha / genetics
  • Interleukin-1beta / genetics*
  • Male
  • Osteomyelitis / genetics*
  • Osteomyelitis / pathology
  • Receptors, Interleukin-1 Type I / genetics
  • Saudi Arabia
  • Toll-Like Receptor 2 / genetics*
  • Toll-Like Receptor 4 / genetics
  • Tumor Necrosis Factor-alpha / genetics

Substances

  • IL1A protein, human
  • IL1R1 protein, human
  • IL1RN protein, human
  • Interleukin 1 Receptor Antagonist Protein
  • Interleukin-1alpha
  • Interleukin-1beta
  • Receptors, Interleukin-1 Type I
  • TLR4 protein, human
  • Toll-Like Receptor 2
  • Toll-Like Receptor 4
  • Tumor Necrosis Factor-alpha