中国寄生虫学与寄生虫病杂志

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Toll样受体mRNA和相关细胞因子在肝多房棘球蚴病患者体内的变化

阿卜杜萨拉木·艾尼1,吐尔洪江·吐逊2,马海长3,张恒2,张皓1,阿卜杜凯尤木·麦麦提4,李玉鹏2,沙地克·阿帕尔2,林仁勇5,邵英梅1,温浩5*   

  1. 新疆医科大学第一附属医院 1肝胆包虫外科,2肝(移植)腹腔镜外科,4急救中心外科,5包虫病研究所,乌鲁木齐830054;3山东大学齐鲁医院普外科,济南250011
  • 出版日期:2016-12-30 发布日期:2017-01-10
  • 基金资助:

    国家自然科学基金(No. 81560329,U1303222);新疆维吾尔自治区重点科学研究项目(No. 201430123-2)

Changes of Toll-like Receptor mRNA and Related Cytokines in Patients with Hepatic Alveolar Echinococcosis

ABUDUSALAMU Aini1, TUERHONGJIANG Tuxun2, MA Hai-zhang3, ZHANG Heng2, ZHANG Hao1, ABUDUKAIYOUMU Maimaiti4, LI Yu-peng2, SHADIKE Apaer2, LIN Ren-yong5, SHAO Ying-mei1, WEN Hao5*   

  1. 1 Department of Hepatobiallary and Hydatid Disease;2 Department of Liver Transplantation and Laparoscopic Surgery;4 Surgical Department of Emergency Center;5 Institute of Hydatid Disease, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China;3 Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250011, China
  • Online:2016-12-30 Published:2017-01-10
  • Supported by:

    Supported by the National Natural Science Foundation of China(No. 81560329, U1303222)and the Xinjiang Uyghur Autonomous Region Key Scientific Research Program(No. 201430123-2)

摘要:

目的 探讨Toll样受体2(Toll-like receptor 2,TLR2)和TLR4 mRNA在肝多房棘球蚴病(HAE)患者外周血单核细胞(PBMC)和肝组织中的表达情况及其与血浆相关细胞因子水平之间的相关性。 方法 收集2012年1月至2015年6月在新疆医科大学第一附属医院住院治疗的肝多房棘球蚴病患者(HAE组)28例,以体检健康的志愿者(HC组,n=28例)作为对照,用ELISA检测血浆中γ干扰素(IFN-γ)、白细胞介素5(IL-5)、IL-23、IL-10水平,用qRT-PCR法检测PBMCs以及HAE患者肝组织中TLR2和TLR4 mRNA的表达水平,用血细胞分析仪检测外周血嗜酸粒细胞百分比(Eo%)。Spearman秩相关分析PBMCs中TLR2和TLR4 mRNA水平与血浆中细胞因子水平和外周血Eo%的相关性。 结果 ELISA检测结果显示,HAE组血浆中IFN-γ、IL-5、IL-23、IL-10水平分别为(301.100±47.290)、(43.420±11.380)、(86.580±31.990)、(8.766±7.568)pg/ml,均高于HC组的(301.100±67.790)、(40.970±6.310)、(46.770±15.490)、(6.272±10.360)pg/ml,其中两组的IL-23水平差异有统计学意义(P<0.01)。qRT-PCR检测结果显示,HAE组PBMCs中TLR2 mRNA相对表达量为0.100±0.084,高于HC组的0.055±0.040(P<0.05);HAE组和HC组的TLR4 mRNA相对表达量分别为0.004±0.003和0.003±0.002,两者间差异无统计学意义(P>0.05)。HAE患者肝病灶组织中TLR2和TLR4 mRNA相对表达量分别为29.680±25.650和21.340±16.640,均高于病灶旁的2.308±4.140和5.541±9.233以及正常组织的1.112±1.431和1.100±1.734(P<0.01)。HAE组和HC组外周血Eo%分别为0.448±0.240和0.110±0.100,两者差异有统计学意义(P<0.01)。Spearman秩相关分析结果显示,PBMCs中TLR2 mRNA水平与血浆中IL-23水平和外周血Eo%之间均存在正相关关系(r=0.368,r=0.382)。 结论 肝多房棘球蚴病患者PBMCs、肝病灶中的TLR2和TLR4 mRNA表达水平升高,PBMCs中TLR2 mRNA水平与血浆中IL-23水平和外周血Eo%之间均存在正相关关系。

关键词: 肝多房棘球蚴病, Toll样受体, 细胞因子, 免疫调节, 免疫耐受

Abstract:

Objective To investigate the expression of Toll-like receptor 2(TLR2) and TLR4 mRNA in peripheral blood mononuclear cells (PBMC) and in the liver of patients with hepatic alveolar echinococcosis (HAE), and their correlations with related cytokines in plasma. Methods Twenty-eight HAE patients hospitalized in the First Affiliated Hospital of Xinjiang Medical University during January 2012 and June 2015 and 28 healthy volunteers as a control were enrolled in this study. Plasma levels of interferon-γ (IFN-γ), interleukin-5 (IL-5), IL-23, and IL-10 were measured by ELISA. qRT-PCR was performed to detect TLR2 and TLR4 mRNA levels in PBMCs and hepatic tissues. The percentage of peripheral blood eosinophil (Eo%) was determined by a hematology analyzer. The correlations of TLR2 and TLR4 mRNA levels in PBMCs with levels of related cytokines and Eo% were analyzed with the Spearman Correlation method. Results ELISA results showed that the plasma levels of IFN-γ, IL-5, IL-23, and IL-10 in the HAE group were (301.100±47.290), (43.420±11.380), (86.580±31.990) and (8.766±7.568) pg/ml respectively, which were higher than those in the control[(301.100±67.790), (40.970±6.310), (46.770±15.490) and (6.272±10.360) pg/ml] with a statistical significance for IL-23 (P<0.01). Results of qRT-PCR showed that the expression level of TLR2 in the HAE group (0.100±0.084) was significantly higher than that in the control (0.055±0.040) (P<0.05), while the expression level of TLR4 in the HAE group (0.004±0.003) was comparable to that in the control(0.003±0.002)(P>0.05). The expression of TLR2 and TLR4 mRNA in HAE lesions in the HAE group(29.680±25.650 and 21.340±16.640, respectively) were both significantly higher than that in para-lesion regions(2.308±4.140 and 5.541±9.233) and that in tissues of the control (1.112±1.431 and 1.100±1.734)(P<0.01). There was also a significant difference in Eo% between the HAE(0.448±0.240) and the control(0.110±0.100) groups. Spearman correlation coefficients revealed a positive correlation of TLR2 mRNA in PBMCs with plasma IL-23 level and peripheral blood Eo% in HAE subjects(r=0.368, r=0.382, respectively). Conclusion There are increases in TLR2 and TLR4 mNRA expression in PBMCs and in HAE lesions in HAE patients. The TLR2 mNRA expression in PBMCs positively correlates with plasma IL-23 level and peripheral Eo%.

Key words: Hepatic alveolar echinococcosis, Toll-like receptor, Cytokines, Immune modulation, Immune tolerance