祛风解痉方对哮喘模型小鼠γδT淋巴细胞表达的影响
2021-07-08樊长征苗青洪巧瑜崔云何沂张琼张文江
樊长征 苗青 洪巧瑜 崔云 何沂 张琼 张文江



摘要 目的:探討祛风解痉方对哮喘模型小鼠γδT淋巴细胞表达的影响。方法:以卵清蛋白滴鼻的方法建立哮喘Balb/c小鼠模型。动物分组:将30只小鼠随机分为正常组、模型组、醋酸泼尼松片组(0.27 mg/d)及3个祛风解痉方组(0.59、1.18、2.36 g/d),分别进行干预,给药14 d,1次/d。结果:与哮喘模型组比较,祛风解痉方低剂量组的γδT细胞的细胞活性差异无统计学意义(P>0.05),而祛风解痉方中剂量组、祛风解痉方高剂量组及阳性药物组的γδT细胞的细胞活性显著降低(P<0.05)。与模型对照组比较,祛风解痉方低剂量组的IL-5、IL-13、TGF-β、IL-10、IFN-γ水平差异无统计学意义,而祛风解痉方中剂量组、高剂量组以及醋酸泼尼松片组在治疗后IL-5、IL-13、TGF-β的表达均显著降低(P<0.05),IL-10、IFN-γ的表达均显著升高(P<0.05)。结论:祛风解痉方通过抑制γδT细胞的细胞活性,降低γδT细胞分泌的细胞因子IL-5、IL-13、TGF-β表达,调高IL-10、IFN-γ的表达抑制气道炎性反应,改善哮喘小鼠的气道高反应性。
关键词 祛风解痉方药;哮喘;γδT淋巴细胞;细胞因子;细胞活性;气道高反应性;气道炎性反应;中医药治疗
Effects of Qufeng Jiejing Formula on the Expression of γδt Lymphocyte in Asthmatic Model Mice
FAN Changzheng1,MAO Qing1,HONG Qiaoyu2,CUI Yun1,HE Yi1,ZHANG Qiong1,ZHANG Wenjing1
(1 Department of Respiration,Xiyuan Hospital of China Academy of Chinese Medical Science,Beijing 100091,China;
2 Department of Traditional Chinese Medicine,Beijing Health Vocational College,Beijing 101101,China)
Abstract Objective:To investigate the effects of Qufeng Jiejing Formula on the expression of γδT lymphocyte in asthmatic model mice.Methods:The asthmatic Balb/c mice model was established by ovalbumin nasal drops.Animal grouping:a total of 30 experimental mice were randomly divided into a normal group,a model group,a prednisone acetate tablet group(0.27 mg/d)and a 3 Qufeng Jiejing Formula groups(0.59,1.18,2.36 g/d).The mice were given intervention for 14 days,once a day.Results:Compared with the asthma model group,there was no significant difference in the cell activity of γδT cells in the low-dose Qufeng Jiejing Decoction group(P>0.05),while the middle-dose Qufeng Jiejing Decoction group and the high-dose Qufeng Jiejing Decoction group and the cell viability of γδT cells in the positive drug group was significantly reduced(P<0.05).Compared with the model control group,the levels of IL-5,IL-13,TGF-β,IL-10 and IFN-γ in the low-dose group of Qufeng Jiejing Formula had no significant difference,while the levels of IL-5,IL-13 and TGF-β in the middle-dose group,the high-dose group and the prednisone acetate tablet group decreased significantly after treatment(P<0.05),while the levels of IL-10 and IFN-γ increased significantly(P<0.05).Conclusion:Qufeng Jiejing Formula can by inhibiting the cell activity of γδ T cells,reduce the expression of cytokines IL-5,IL-13,and TGF-β secreted by γδ T cells,increase the expression of IL-10 and IFN-γ,inhibit airway inflammation,and improve asthmatic mice
Keywords Qufeng Jiejing Formula; Asthma; γδT lymphocyte; Cytokines;Cytoactive; Airway hyperresponsiveness; Airway inflammation; TCM treatment
中图分类号:R285.5文献标识码:Adoi:10.3969/j.issn.1673-7202.2021.02.012
支气管哮喘(以下称哮喘)主要特点表现为慢性气道炎性反应及气道高反应性,其发生发展的关键为Th1/Th2失衡,众多细胞和因子影响着Th1/Th2平衡,其中γδT细胞表达变化影响着Th1/Th2应答平衡,与哮喘发生发展密切相关,因此研究γδT细胞表达变化受到越来越多重视[1-3]。
根据受体不同,T细胞分为αβT细胞和γδT细胞,αβT细胞在外周血中约>90%,γδT细胞主要存在黏膜上皮及表皮组织中,约10%~50%[4],γδT细胞在黏膜上皮及表皮中大量表达,表明其在黏膜免疫调节及防御中发挥着重要作用[5],γδT细胞功能的参与和执行者主要为Th1型IL-2、IFN-γ、TNF-α及Th2型IL-6、IL-4等细胞因子[6-7]。根据δ链的不同,人γδT细胞分为δ1和δ2 2个亚群,根据γ链不同,分为Vγ1、Vγ4、Vγ5、Vγ6亚群。前期研究表明卵清蛋白(OVA)致敏的小鼠哮喘模型中,Vγ1+γδT细胞亚群增强了哮喘小鼠气道高反应性[8],同时Vγ1+γδT细胞可降低IL-10和TGF-β的表达减轻哮喘小鼠气道炎性反应[9],研究也表明Vγ4+γδT细胞下调Th2型应答,降低哮喘小鼠气道高反应性[10-11],因此,哮喘发生发展的主要细胞群为Vγ1γδT和Vγ4γδT细胞。……p>
