Th17/Treg值在慢性乙型肝炎肝纤维化进展中的意义
2020-06-12付海洋时维平付广明张蓓史海磊李雪健
付海洋 时维平 付广明 张蓓 史海磊 李雪健



[摘要] 目的 测定慢性乙型肝炎(CHB)患者肝纤维化进展过程中外周血中Th17细胞和Treg细胞的频率及相关细胞因子的变化,以及肝组织中Th17细胞和Treg细胞数目的变化,探讨Th17/Treg平衡在纤维化进展中的作用。方法 方便选取2017年6—12月青岛大学附属医院慢性乙型肝炎住院患者51例,其中F1期CHB患者(F1)5例,F2期CHB患者(F2)10例,F3期CHB患者(F3)15例,F4期CHB患者(F4)21例,同时选取10位健康体检者作为对照(HC),流式细胞术检测外周血中Th17和Treg的频数,双抗体夹心ELISA检测血清中IL-17和IL-10的表达水平,免疫组化检测CHB患者肝组织中Th17和Treg数量。 结果 在外周血中, Th17/Treg细胞频率比值在F2组(0.76±0.37)和F4组(2.23±0.67)中与HC组(1.33±0.67)相比,差异有统计学意义[P(HCvsF2)=0.022,P(HCvsF4)<0.001],IL-17/IL-10比值在F2组(0.11±0.19)、F3组(0.12±0.32)和F4组(0.12±0.32)中与HC组(0.72±0.22)相比,差异有统计学意义[P(HCvsF2)=0.008,P(HCvsF3)=0.001,P(HCvsF4)<0.001],肝组织中,Th17/Treg比值在F3组(1.07±0.86)和F4組(0.79±0.28)中与F1组(2.08±1.06)相比,差异有统计学意义[P(F1vsF3)=0.008, P(F1vsF4)=0.001],F2组(1.51±0.77)和F4组(0.79±0.28)相比,Th17/Treg值变化差异有统计学意义[P(F2vsF4)=0.011]。 结论 Th17/Treg的失衡是造成慢性乙型肝炎肝纤维化进程演变的重要因素,检测Th17/Treg变化对预测肝纤维化发展有一定价值。
[关键词] 慢性乙型肝炎;Th17细胞;调节性T细胞;IL-17;IL-10;肝纤维化
[Abstract] Objective To determine the frequency of Th17 cells and Treg cells in peripheral blood and the changes of related cytokines and the number of Th17 cells and Treg cells in liver tissue during the progression of liver fibrosis in patients with chronic hepatitis B (CHB). Role of Th17 / Treg balance in fibrosis progression was explored. Methods A total of 51 hospitalized patients with chronic hepatitis B from the affiliated hospital of Qingdao University from June 2017 to December 2017 were convenient selected, including 5 patients with stage F1 CHB (F1), 10 patients with stage F2 (F2), and 15 patients with stage F3 (F3); 21 cases of F4 stage CHB patients (F4), 10 healthy subjects were selected as controls (HC), the frequency of Th17 and Treg in peripheral blood was detected by flow cytometry, and the serum IL was detected by double antibody sandwich ELISA expression levels of IL-17 and IL-10 were detected by immunohistochemistry in the amount of Th17 and Treg in liver tissue of patients with CHB. Results In peripheral blood, the ratio of Th17 / Treg cell frequency in the F2 group (0.76±0.37) and the F4 group (2.23±0.67) was significantly different from that in the HC group (1.33±0.67)[P(HCvsF2) = 0.022, P(HCvsF4)<0.001], the ratio of IL-17/IL-10 in the F2 group (0.11±0.19), F3 group (0.12±0.32) and F4 group (0.12±0.32) compared with the HC group (0.72±0.22), the difference was statistically significant[P(HCvsF2) = 0.008, P(HCvsF3) = 0.001, P(HCvsF4)<0.001], Th17 / Treg ratio in liver tissues was in F3 group (1.07±0.86) and F4 group (0.79±0.28), compared with the F1 group (2.08±1.06), the difference is statistically significant[P(F1vsF3) = 0.008, P (F1vsF4) = 0.001], compared with the F2 group (1.51±0.77) and the F4 group (0.79±0.28). The difference in Th17 / Treg values was statistically significant[P (F2vsF4)=0.011]. Conclusion The imbalance of Th17 / Treg is an important factor in the evolution of liver fibrosis in chronic hepatitis B. Detection of changes in Th17 / Treg is of certain value in predicting the development of liver fibrosis.
[Key words] Chronic hepatitis B; Th17 cells; Regulatory T cells; IL-17; IL-10; Liver fibrosis
慢性乙型肝炎(chronic hepatitis B,CHB)是由乙型肝炎病毒感染引起的复杂的肝脏免疫性疾病。我国作为乙型肝炎高发国家,CHB患者约有2 300万,病毒携带者数量高达1.3亿,每年约有50万以上死于乙肝引起的肝硬化、肝癌。HBV病毒在体内导致的肝纤维化是多种慢性肝病的病变基础,随着纤维化的进展易发展成肝硬化,具有很高的病死率,严重威胁患者的生命健康,因此早期诊断及治疗具有重要意义[1]。乙肝病毒在体内难以清除,关键在于免疫应答不利,近年来研究发现,辅助性T细胞17(T helper cells 17,Th17)与调节性T细胞(regulatory T cells,Treg)同属CD4+T细胞的两组新亚群,它们在维持机体免疫平衡及自身耐受中具有重要的作用[2]。为此,该研究以CHB患者为研究对象,方便选取2017年6—12月青岛大学附属医院慢性乙型肝……
