title: Coding variants of TLR2 and TLR4 genes do not substantially contribute to prosthetic joint infection.
abstract: OBJECTIVE
  Prosthetic joint infection (PJI) is a severe complication of total joint arthroplasty (TJA). We conducted a genetic association study that investigated whether selected coding variants of the genes for Toll-like receptors (TLR)2 and TLR4 may contribute to genetic susceptibility for PJI.
  
  
  METHODS
  In total, 350 patients with TJA (98 with PJI/252 without PJI), and 189 unrelated healthy Czech individuals without TJA were enrolled in our study. Three missense polymorphisms of the genes encoding for TLR2 (TLR2 R753Q, rs5743708) and TLR4 (TLR4 D299G, rs4986790 and T399I, rs4986791) were genotyped by "TaqMan" assay.
  
  
  RESULTS
  The frequencies of less common variants for the investigated TLR2/TLR4 polymorphisms in healthy individuals were similar to those observed in other Caucasian populations. Importantly, the distribution of TLR2/TLR4 genotype alleles did not differ between the patients with PJI and the control groups of patients with nonseptic prostheses/healthy individuals.
  
  
  CONCLUSIONS
  Our data suggest that structural genetic variants of the receptors TLR2 and TLR4 do not substantially affect the risk of prosthetic joint infection.
authors: Laboratory of Immunogenomics and Immunoproteomics, Department of Immunology, Faculty of Medicine and Dentistry, Palacky University, I. P. Pavlova str. 6, 775 20, Olomouc, Czech Republic. mrazekf@fnol.cz
authors: Frantisek
authors: F
authors: Mrazek
authors: Jiri
authors: J
authors: Gallo
authors: Anna
authors: A
authors: Stahelova
authors: Martin
authors: M
authors: Petrek
mesh_terms: D000368:Aged; D001178:Arthroplasty; D005260:Female; D006801:Humans; D007239:Infections; D007596:Joints / Q000601:surgery; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D019736:Prostheses and Implants / Q000009:adverse effects*; D016459:Prosthesis-Related Infections / Q000235:genetics*; D013203:Staphylococcal Infections / Q000235:genetics; D013210:Staphylococcus; D051195:Toll-Like Receptor 2 / Q000235:genetics*; D051197:Toll-Like Receptor 4 / Q000235:genetics*
chemical_list: C495342:TLR2 protein, human; C495345:TLR4 protein, human; D051195:Toll-Like Receptor 2; D051197:Toll-Like Receptor 4