抗体芯片分析炎性细胞因子在严重脓毒症中的表达

目的应用抗体芯片分析严重脓毒症患者血清中炎性细胞因子的表达。方法12例符合严重脓毒症诊断标准的患者和10例年龄、性别匹配的对照组患者入选。用生物素标记从两组患者血清中提取的总蛋白,然后与预先点有40个主要炎症相关细胞因子的特异抗体的抗体芯片膜反应,目标蛋白与辣根过氧化物酶(HRP)标记的抗链霉生物素抗体结合并曝光显示反应信号,最后用激光扫描仪将其转化为图像文件进行分析。结果与对照组相比,脓毒症患者组血清中多种炎性细胞因子包括促炎因子、抗炎因子、趋化因子、某些细胞因子受体等的表达水平大幅度提高,但抗炎因子白介素(IL)-2、-4、-13、-15表达明显下降。结论严重脓毒症病程中存在炎症反应过度、抗炎因子与促炎因子失衡。

Role of antibody chin in analysis of inflammatory cytokine expression in severe sepsis

Objective To investigate the expression of inflammatory cytokines in patients with severe sepsis by using an antibody chip.Methods Twelve patients with severe sepsis and other 10 patients whose age and gender were matehed were enrolled in this study.Proteins from patients were labeled with biotin.The biotin-labeled proteins reaeted with antibody chips,on which there were antibodies of 40 major inflammatory cytokines.The target proteins were conjugated with streptomycin antibody labeled by horseradish peroxidase(HRP),and signals were imaged by laser scanner.Results In comparison with control group,the serum levels of inflammatory eytokines ineluding pro-and anti-inflammatory cytokines,ehemokines and certain eytokines receptors were notably increased,while expression of anti-inflammatory interleukin(IL)-2,-4,-13,-15 was remarkably decreased in sepsis group.Conclusions Excess inflammatory response and imbalance of pro-and anti-inflammatory eytokines were presented in the eourse of severe sepsis.