CHC患者外周血T细胞免疫功能与丙型肝炎病毒表达的关系

目的 探讨慢性丙型肝炎(CHC)患者外周血T细胞免疫功能与丙型肝炎病毒(HCV)复制及核心抗原(HCV-cAg)表达的关系.方法 采用流式细胞术、荧光定量PCR和ELISA对63例健康体检者(对照组)和85例CHC患者(CHC组)的外周血T淋巴细胞亚群、血清HCV-RNA和HCV-cAg进行测定.结果 CHC组总T细胞、T4细胞、T8细胞、双阴性细胞(DNT )、双阳性细胞(DPT )水平依次为(67 .37 ± 10 .43)% 、(37 .11 ± 10 .28)% 、(21 .63 ± 8 .87)% 、(7 .80 ± 4 .57)% 、(0 .20 ± 0 .29)% ,T4/T8比值为(2 .18 ± 1 .26 )% ,绝对水平依次为(0 .70 ± 0 .44 ) × 109/L、(0 .37 ± 0 .22 ) × 109/L、(0 .22 ± 0 .17 ) × 109/L、(0 .08 ± 0 .06 ) × 109/L和(0 .19 ± 0 .68)× 107/L ;CHC患者T8细胞水平显著减少(P＜0 .01) ,致使T4/T8比值升高(P＜0 .05);CHC患者总T细胞、T4细胞、T8细胞和DNT的绝对值均显著减少(P＜0 .05);HCV-RNA和 HCV-cAg阳性时 ,T4细胞和DNT 水平显著升高(P＜0 .05).结论 CHC患者 HCV复制表达时 ,患者 T细胞亚群存在明显异常 ,T细胞免疫功能低下或免疫耐受是CHC迁延难愈的重要原因.

Relationship between immune function of T cells in peripheral blood and expression of hepatitis C virus in patients with chronic hepatitis C

Objective To explore the relationship between the immune function of cellin peripheral blood with the virureplication and hepatitiviru(HCV)-cAg expression in the patientwith chronihepatiti(CHC) .MethodPeripheral blood lymphocytesubpopulation ,HCV-Rnand HCV core antigen (HCV-cAg) in 63 healthy people undergoing the physical exami-nation (control group) and 85 caseof CHC(Chgroup) were analyzed by the flow cytometry ,real-time Pcand ELIS,respec-tively .ResultThe percentageof total cell,T4 cell,T8 cell,double negative cell(DN) and double positive cell(DP) in the Chgroup were (67 .37 ± 10 .43)% ,(37 .11 ± 10 .28)% ,(21 .63 ± 8 .87)% ,(7 .80 ± 4 .57)% and (0 .20 ± 0 .29)% , respectively ,the absolute contentwere in turn (0 .70 ± 0 .44) × 109/L ,(0 .37 ± 0 .22) × 109/L ,(0 .22 ± 0 .17) × 109/L ,(0 .08 ± 0.06)×109/Land(0.19±0.68)×107/L,respectively.TheratioofT4/T8was(2.18±1.26)% .Theresultsindicatedthatthe percentage of T8 cellin the Chpatientwadecreased obviously (P＜0 .01) ,which resulted in the ratio of T4/T8 raising(P＜0 .05);meanwhile ,the absolute contentof the total cell,T4 cell,T8 celland Dnwere all decreased obviously (P＜0 .05);moreove,the percentage of T4 celland Dnin the patientwith HCV-Rnpositive and HCV-cAg positive wasignificantly in-creased (P＜0 .05) .Conclusion When HCV replicating in the patientwith CHC,the T lymphocyte subpopulation haobviouab-normity .The low immune function or immune tolerance of T cells may be the important cause of recurrence and uncurability of CHC.