STING在原发性胆汁性肝硬化患者外周血单个核细胞中的表达及临床意义

目的 探讨刺激干扰素基因(STING)在原发性胆汁性肝硬化(PBC)中的表达及其潜在的临床意义。方法 纳入2014年1月～2015年10月期间在上海长海医院和长征医院就诊的PBC患者28例,平均年龄32.5±11.3岁,纳入同期体检的健康对照28例,平均年龄37.5±13.7岁。分离单个核细胞(PBMC),采用实时荧光定量PCR检测STING mRNA表达水平; 采用Spearman检验分析STING表达水平与PBC患者临床指标的相关性; 随访5例初诊的PBC患者,观察临床治疗前后STING表达水平的变化。结果 与健康对照组相比,STING mRNA在PBC患者PBMC中显著增高,在Ⅲ期和Ⅳ期中的表达显著高于I期和Ⅱ期,差异有统计学意义(U=0.00,P<0.05)。STING mRNA水平与患者Mayo评分、GGT正相关(R=0.45,R=0.42,P<0.05),与AST,ALT和ALP无相关性(R=0.33,0.21,0.27,P>0.05)。临床治疗有效后,STING mRNA的表达量显著降低,差异有统计学意义(U=0.00,P<0.05)。结论 STING可能参与了PBC的发病机制。

Expression of STING in Peripheral Blood in Patients with Primary Biliary Cirrhosis and Its Clinical Significance

Objective To explore the clinical significanceof STING in peripheral blood in patients with primary biliary cirrhosis.Methods Admitted 28 PBC patients hospitalized in Shanghai Changhai Hospital and Shanghai Changzheng Hospital from January 2014 to October 2015.Also enrolled 28 healthy controls.Baseline data and laboratory indicatorswere extracted,and STING mRNA expression was determined using q-PCR.The correlation between STING and clinical parameters were analyzed.The changes of STING mRNA in 5 followed-up patients with PBC were analyzed.Results Compared with healthy controls,STING mRNA was significantly increasedin PBC patients and was increased in patients with severer disease stages(U=0.00,P<0.05).STING was positively correlated with Mayo risk and GGT(R=0.45,R=0.42,P<0.05),and not AST,ALT or ALP(R=0.33,0.21,0.27,P>0.05).After therapy,STING mRNA were significantly reduced in 5 PBC patients(U=0.00,P<0.05).Conclusion STING may be involved in PBC pathogenesis.