Abstract
Interleukin-8 is a strong mediator of inflammation and has been implicated in the biochemical pathways involved in a wide range of inflammatory diseases including atherosclerosis. We investigated the potential influence of two common functional polymorphisms of the interleukin (IL)-8 gene: −251A/T and 781C/T on susceptibility to in stent restenosis (ISR) following percutaneous coronary intervention (PCI). The hypothesis was tested by screening for the prevalence of the above polymorphisms in 201 coronary artery disease (CAD) patients subjected to PCI and presenting with symptoms or signs of recurrent ischemia. Patients were angiographically re-evaluated and formed the ISR group (n = 73) and the non-ISR group (n = 128) based on the presence or absence of ISR. One hundred and forty-seven subjects without angiographic evidence of CAD formed a reference control group (non-CAD group). A borderline statistically significant higher frequency of the TT251TT781 combined genotype was observed in patients with ISR on re-evaluation compared with patients with normal follow-up angiography. The predominance of TT251TT781 was independent of conventional risk factors for cardiovascular disease. Consequently, T251T781 haplotype was significantly more common in the ISR group. The above observations indicate that the genetic diversity of the IL-8 gene influences patient susceptibility to ISR and suggests the implication of IL-8-mediated pathways in the process of ISR. However, the rarity of T251T781 haplotype makes any clinical application of the above observations unfeasible.
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Vogiatzi, K., Apostolakis, S., Voudris, V. et al. Interleukin 8 gene polymorphisms and susceptibility to restenosis after percutaneous coronary intervention. J Thromb Thrombolysis 29, 134–140 (2010). https://doi.org/10.1007/s11239-009-0338-y
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DOI: https://doi.org/10.1007/s11239-009-0338-y