Pathogenetic significance of polymorphic variants in the TREM-1 gene in the multiple organ failure risk after cardiac surgery

Introduction. Searching of highly specific, sensitive and easy-to-use markers of multiple organ failure (MOF) that will help to the early prognosis of this unfavorable condition, prevent complications and reduce mortality in the early postoperative period is very urgent for the modern medicine.Aim: To study the pathogenetic significance of the TREM-1 gene polymorphism in MOF in patients with coronary artery disease (CAD) in the early postoperative period.Material and methods. 592 CAD patients (564 patients with uncomplicated postoperative period and 28 MOF patients) were selected for the presented study. Genotyping polymorphic variants rs1817537, rs3804277, rs6910730, rs7768162, rs2234246, rs4711668, rs9471535 and rs2234237 in the TREM-1 gene was carried out by polymerase chain reaction.Results. It was found that the allele T (rs2234246), the allele G (rs1817537) and the allele T (rs3804277) in the TREM-1 gene were associated with an increased MOF risk after elective surgery according to the dominant inheritance model. TREM-1 polymorphic loci rs7768162 and rs4711668 were associated with a decreased MOF risk according to the additive inheritance model. We found no significant associations between polymorphic variants rs2234237, rs6910730, rs9471535, as well as inherited haplotype and MOF risk. Using the MDR analysis, three most significant models of gene-gene interactions of TREM-1 polymorphic loci associated with MOF risk in patients after cardiac surgery were identified.Conclusion. The obtained results demonstrate a significant contribution of polymorphic variants in the TREM-1 gene to the development of MOF in patients undergoing cardiac surgery.