TNF-α, IL-6, and IL-8 Cytokines and Their Association with TNF-α-308 G/A Polymorphism and Postoperative Sepsis
文摘
Introduction Early prediction of postoperative sepsis remains an enormous clinical challenge. Association of TNF-α-308 G/A polymorphism with sepsis remains controversial. We, therefore, investigated this polymorphism with serum levels of cytokines TNF-α, IL-6, and IL-8 in relation to development of sepsis following major gastrointestinal surgery. Methods Two hundred and thirty-nine patients undergoing major gastrointestinal surgery were enrolled. Polymorphism was studied through the analysis of restriction fragments of Nco1-digested DNA with the polymerase chain reaction. All patients were followed for 1?month following surgery for evidence of sepsis. Levels of serum cytokines TNF-α, IL-6, and IL-8 were measured preoperatively and postoperatively by enzyme-linked immunosorbent assay (ELISA). Results Forty-seven (19.66?%) patients developed postoperative sepsis. Patients with postoperative sepsis were significantly (p--.002) more likely to possess AA homozygous genotype with higher capacity to produce cytokines TNF-α (p--.0001), IL-6 (p--.0001), and IL-8 (p--.0001) as compared to other genotypes. When compared with patients carrying at least one G allele, the AA genotype was associated with a significantly higher probability (odds ratio (OR)--.17; p--.003; 95?% confidence interval (CI)--.5-1.48) of developing sepsis. Compared with the GG genotype, AA was associated with a significantly higher probability (OR--.18; p--.0008; 95?% CI--.82-4.76) of sepsis development. Conclusion TNF-α-308 G/A polymorphism is significantly associated with the development of postoperative sepsis and with increased expression of cytokines TNF-α, IL-6, and IL-8.