中国寄生虫学与寄生虫病杂志

• 论著 • 上一篇    下一篇

晚期血吸虫病患者外周血Vα24自然杀伤T细胞的变化及其与肝纤维化程度的关系

孙婷1,2,李刚1,2,陈茂剑1,2,聂浩1,2,廖国祥3,龚权1,2 *   

  1. 1 长江大学医学院病原生物学部,荆州 434023;2 长江大学临床分子免疫研究中心,荆州 434023;3 荆州市第三人民医院血吸虫病内科,荆州 434000
  • 出版日期:2014-10-30 发布日期:2015-01-06

Change of the Vα24 NKT Cells in Peripheral Blood of the Patients with Advanced Schistosomiasis and its Relation to the Degree of Hepatic Fibrosis

SUN Ting1,2,LI Gang1,2,CHEN Mao-jian1,2,NIE Hao1,2,LIAO Guo-xiang3,GONG Quan1,2 *   

  1. 1 Department of Pathogen Biology,Medical School of Yangtze University,Jingzhou 434023,China;
    2 Research Center for Clinical and Molecular Immunology,Yangtze University,Jingzhou 434023,China;
    3 Department of Schistosomiasis,the Third People’s Hospital of Jingzhou,Jingzhou 434000,China
  • Online:2014-10-30 Published:2015-01-06

摘要:

目的  探讨晚期血吸虫病患者外周血Vα24自然杀伤T细胞(NKT)数量变化及其与肝纤维化程度的关系。  方法  采集32例晚期血吸虫病患者和23位健康体检者(对照组)静脉血各3 ml,采用流式细胞术检测外周血Vα24 NKT细胞的比例,采用酶循环法检测肝功能相关指标,同时行腹部B超检查。分析Vα24 NKT细胞比例与肝功能指标和肝纤维化程度的相关性。  结果  流式细胞术检测结果显示,晚期血吸虫病患者外周血Vα24 NKT细胞比例为(0.23±0.09)%,较健康对照组[(1.44±0.62)%]明显降低(P<0.01)。肝功能检测结果显示,晚期血吸虫病患者丙氨酸转氨酶(ALT)、谷酰转肽酶(γ-GT)和总胆红素(Tbil)分别为(44.78±33.42)U/L、(68.75±57.95)U/L和(20.16±11.20)μmol/L,较健康对照组[(18.77±14.19)U/L、(20.20±13.82)U/L和(11.65±5.09)μmol/L]明显增高(P<0.01,P<0.01,P<0.05);相关性分析结果显示,晚期血吸虫病患者NKT细胞比例与γ-GT呈正相关(r=0.365,P<0.05),而与ALT、天冬氨酸转氨酶(AST)、直接胆红素、碱性磷酸酶、白蛋白和白球比值等无明显相关性(P>0.05)。B超结果显示,肝纤维化Ⅰ级、Ⅱ级和Ⅲ级的晚期血吸虫病患者分别有5、11和16例,各级的Vα24 NKT细胞比例分别为(0.37±0.02)%、(0.28±0.04)%和(0.15±0.03)%,且各级间差异均有统计学意义(P<0.01);相关性分析结果显示,NKT细胞比例与肝纤维化程度呈负相关性(r=-0.91,P<0.01)。  结论  晚期血吸虫病患者外周血Vα24 NKT细胞数量明显降低,并随肝纤维化程度加重而减少。

关键词: 自然杀伤T细胞, 晚期血吸虫病, 流式细胞术, 肝纤维化

Abstract:

Objective  To investigate the change of Vα24 NKT cells number in peripheral blood and its correlation with the degree of hepatic fibrosis in patients with advanced schistosomiasis.  Methods  Thirty-two advanced schistosomiasis patients and 23 healthy persons were included in the study. The percentage of peripheral blood Vα24 NKT cells was determined by flow cytometry. The relevant indicators of liver function were detected by enzyme cycling method. Type-B ultrasound was used to examine the degree of hepatic fibrosis.  Results  Flow cytometry showed that the percentage of Vα24 NKT cells in advanced schistosomiasis patients[(0.23±0.09)%] was significantly lower than that of healthy persons [(1.44±0.62)%](P<0.01). Liver function test showed that the alanine aminotransferase(ALT) [(44.78±33.42) U/L], γ-glutamyl transpeptidase(γ-GT) [(68.75±57.95) U/L] and total bilirubin (Tbil)[(20.16±11.20) μmol/L] in the patients were significantly higher than those of healthy persons[(18.77±14.19) U/L, (20.20±13.82) U/L, and (11.65±5.09) μmol/L], respectively (P<0.01, P<0.01, P<0.05). The percentage of Vα24 NKT cells was positively correlated with γ-GT (r=0.365, P<0.05), but not significantly correlated with ALT, aspartate transaminase, direct bilirubin, alkaline phosphatase, albumin, albumin-globulin ratio (P>0.05). The percentage of Vα24 NKT cells in patients with gradesⅠ(5 cases), Ⅱ(11 cases), and Ⅲ(16 cases) fibrosis was (0.37±0.02)%, (0.28±0.04)%, (0.15±0.03)%, respectively (P<0.01). The percentage of Vα24 NKT cells showed a significant negative correlation with the degree of liver fibrosis(r=-0.91, P<0.01).  Conclusion  The percentage of Vα24 NKT cells in peripheral blood decreases with the aggravation of hepatic fibrosis in patients with advanced schistosomiasis.

Key words: Natural killer T cell, Advanced schistosomiasis, Flow cytometry, Hepatic fibrosis