Variation in the IL1B, TNF and IL6 genes and individual susceptibility to prosthetic joint infection

Abstract

BackgroundProsthetic joint infection (PJI) is an important failure mechanism of total joint arthroplasty (TJA). Here we examine whether the particular genetic variants can lead to increased susceptibility to PJI development.ResultsWe conducted a genetic-association study to determine whether PJI could be associated with functional cytokine gene polymorphisms (CGP) influencing on innate immunity response. A case–control design was utilized and previously published criteria for PJI were included to distinguish between cases and control subjects with/without TJA. Six single nucleotide polymorphisms (SNPs) located in the genes for interleukin-1beta (SNP: IL1B-511, +3962), tumour necrosis factor alpha (TNF-308, -238) and interleukin-6 (IL6-174, nt565) were genotyped in 303 Caucasian (Czech) patients with TJA (89 with PJI / 214 without PJI), and 168 unrelated healthy Czech individuals without TJA. The results showed that carriers of the less common IL1B−511*T allele were overrepresented in the group of TJA patients with PJI (69%) in comparison with those that did not develop PJI (51%, p = 0.006, pcorr = 0.037) and with healthy controls (55%, p = 0.04, pcorr = N.S.). There was no significant difference in the distribution of the remaining five investigated CGPs and their haplotypes between groups.ConclusionA functional variant of the gene encoding for IL-1beta was preliminarily nominated as a genetic factor contributing to the susceptibility to PJI. Our results should be independently replicated; studies on the functional relevance of IL1B gene variants in PJI are also needed.

Antibacterial Surface Treatment for Orthopaedic Implants

“…A validated tool for screening patients for increased risk of PJI does not currently exist. Despite attempts to identify and stratify patients at risk of PJI [ 12 , 42 , 64 , 65 , 66 ] specific clinical algorithms are not routinely used. In addition, we have no data relevant for determining the potential costs associated with wide range usage of such a screening strategy.…”

Association of six CpG-SNPs in the inflammation-related genes with coronary heart disease

“…Many inflammation-related genes are found to be associated with risk of CHD [ 9 , 10 ]. Interleukin 1, beta gene ( IL1B ) encodes the cytokine which exerts a wide range of inflammatory activities [ 11 ]. Genetic association between IL1B and CHD has been previously found [ 12 ].…”

Prosthetic Joint Infection

“…In contrast, the effect of smoking on tissue blood flow and oxygenation at the time of surgery is biologically plausible. A recently demonstrated association between a polymorphism in the gene encoding interleukin-1␤ and a higher risk of PJI suggests an interesting new area of research in the era of individualized medicine (49).…”