支气管哮喘患者血清胸腺活化调节趋化因子水平测定及意义

Measurement and significance of TARC in serum of patients with bronchial asthma

目的 探讨胸腺活化调节趋化因子(TARC)在哮喘发病中的作用及意义.方法 选择同期收治的40例哮喘患者(哮喘组、急性发作期及慢性持续期各20例)及20例健康体检者(对照组),采用酶联免疫吸附试验(ELISA)法检测血清TARC、白细胞介素-4(IL-4)水平,血细胞分析仪计数外周血嗜酸性粒细胞(EOS).结果 哮喘组血清TARC、IL-4水平及EOS计数均显著高于对照组,且急性期患者显著高于慢性期患者(P<0.05),三种指标间均呈正相关(P<0.05)血清TARC水平升高可能在哮喘发生和发展中起重要作用,可能机制为趋化CCR4阳性Th2细胞,使其释放大量IL-4、EOS等炎症因子.

Objective To investigate the change and significance of thymus and activation regulated chemokine (TARC) level in serum of patients with bronchial asthma.Methods Forty patients with bronchial asthma were divided into two groups according to clinical manifestation, in which the serum level of TARC and IL-4 and 20 healthy individuals were measured respectively by ELISA. The serum EOS were counted by hemocyte analyzer.Results The levels of TARC,IL-4 and the numbers of EOS in serum of acute asthma group were all significantly higher than those of chronic and control group. The levels of TARC,IL-4 and the numbers of EOS in serum of chronic asthma group were all higher than that in controls group(P<0.05). Positive correlations were found between TARC,IL-4 and absolute numbers of EOS in serum.Conclusions TARC plays an important role in pathogenesis of asthma. The level of serum TARC may be related to the clinical manifestation of asthma. Selective recruitment positive CCR4 cells is the possible mechanism.