支炎合剂对肺炎支原体感染小鼠M1巨噬细胞活化及Th2型免疫应答的影响分析  

Effects of Zhiyan mixture on M1 macrophage activation and Th2 immune response in mice with mycoplasma pneumoniae infection

作　　者：陈玲 董善武 陈咏丽 陶双 何春枝[1] 陈静 田琳 CHEN Ling;DONG Shanwu;CHEN Yongli;TAO Shuang;HE Chunzhi;CHEN Jing;TIAN Lin(Department of Pediatrics,Wuhan Fourth Hospital,Wuhan 430033,China)

机构地区：[1]武汉市第四医院儿科,武汉430033

出　　处：《中国免疫学杂志》2024年第9期1914-1918,共5页Chinese Journal of Immunology

摘　　要：目的:探讨支炎合剂对肺炎支原体(MP)感染小鼠经典激活的巨噬细胞(M1)活化及辅助性T细胞2(Th2)型免疫应答的影响。方法:将C57BL/6J小鼠分为对照组、MP组、支炎合剂组和阿奇霉素组,除对照组外其他各组小鼠通过鼻滴MP菌液(1×10^(7)CFUs/ml)制成MP感染模型,支炎合剂组给予支炎合剂灌胃治疗,阿奇霉素组给予阿奇霉素灌胃治疗,对照组、MP组小鼠灌胃等体积生理盐水;HE染色观察小鼠肺组织病理损伤并进行病理评分,固体培养法检测小鼠肺组织MP载量变化,流式细胞法检测小鼠肺组织M1巨噬细胞水平,PCR检测肺组织诱导型一氧化氮合酶(iNOS)、TNF-α、CXC趋化因子1(CX-CL1)mRNA水平,ELISA检测小鼠肺组织IL-4、IL-5、IL-10、IL-13水平,Western blot检测小鼠肺组织NF-κB通路相关蛋白表达。结果:MP组、支炎合剂组和阿奇霉素组小鼠肺组织病理评分、MP载量、F4/80^(+)细胞水平、CD86^(+)/F4/80^(+)、MHCⅡ^(+)/F4/80^(+)和iNOS、TNF-α、CXCL1 mRNA水平高于对照组(P<0.05),肺组织IL-4、IL-5、IL-10、IL-13水平和p-p65/p65、p-IKK/IKK蛋白表达均高于对照组(P<0.05)。支炎合剂组和阿奇霉素组小鼠肺组织病理评分、MP载量、F4/80^(+)细胞水平、CD86^(+)/F4/80^(+)、MHCⅡ^(+)/F4/80^(+)和iNOS、TNF-α、CXCL1 mRNA水平均低于MP组(P<0.05),肺组织IL-4、IL-5、IL-10、IL-13水平均高于MP组(P<0.05),肺组织pp65/p65、p-IKK/IKK蛋白表达低于MP组(P<0.05)。结论:支炎合剂可改善MP感染小鼠肺损伤,可能与降低M1巨噬细胞活性、增加Th2免疫应答、抑制NF-κB通路有关。Objective:To explore the effects of Zhiyan mixture on the activation of classically activated macrophages(M1)and T helper cells 2(Th2)immune responses in mice with mycoplasma pneumoniae(MP)infection.Methods:C57BL/6J mice were divided into control group,MP group,Zhiyan mixture group and azithromycin group.Except control group,models of MP infection were prepared by nasal drip of MP bacterial solution(1×10^(7)CFUs/ml)in the other groups.Zhiyan mixture group was given intragastric administration of Zhiyan mixture,azithromycin group was given intragastric administration of azithromycin,control group and MP group were given the same volume of normal saline.The pathological damage of lung tissues were observed by HE staining,and pathological scoring was conducted.The changes of MP load in lung tissues were detected by solid culture method.M1 level was detected by flow cytometry.The mRNA levels of inducible nitric oxide synthase(iNOS),TNF-αand CXC chemokine 1(CXCL1)in lung tissues were detected by PCR.The levels of IL-4,IL-5,IL-10 and IL-13 in lung tissues were detected by ELISA.The expressions of NF-κB pathway-related proteins in lung tissues were detected by Western blot.Results:The pathological scores of lung tissues,MP load,F4/80^(+)cell level,ratios of CD86^(+)/F4/80^(+)and MHCⅡ^(+)/F4/80^(+),and mRNA levels of iNOS,TNF-αand CXCL1 in MP group,Zhiyan mixture group and azithromycin group were higher than those in control group(P<0.05),levels of IL-4,IL-5,IL-10 and IL-13,and expressions of p-p65/p65 and p-IKK/IKK in lung tissues were all higher than those in control group(P<0.05).The pathological scores of lung tissues,MP load,F4/80^(+)level,ratios of CD86^(+)/F4/80^(+)and MHCⅡ^(+)/F4/80^(+),and mRNA levels of iNOS,TNF-αand CXCL1 in Zhiyan mixture group and azithromycin group were lower than those in MP group(P<0.05),levels of IL-4,IL-5,IL-10 and IL-13 were higher than those in MP group(P<0.05),and protein expressions of p-p65/p65 and p-IKK/IKK in lung tissues were lower than those in MP group(P<0.05).Conclus

关 键 词：肺炎支原体感染 支炎合剂 经典激活巨噬细胞 Th2型免疫应答 

分 类 号：R375.2[医药卫生—病原生物学]