目的 探讨异甘草素对中性粒细胞性哮喘小鼠气道炎症的影响及其可能的作用机制.方法 用卵清蛋白建立中性粒细胞性哮喘小鼠模型.将Balb/c小鼠随机分为对照组(给予等量的0.9％NaCl处理)、模型组(卵清蛋白建模)、地塞米松组(腹腔注射4 mg·kg-1的地塞米松)、低剂量实验组(腹腔注射100 mg·kg-1的异甘草素)、高剂量实验组(腹腔注射200 mg·kg-1的异甘草素),每组11只.在最后1次雾化激发后的24 h内,检测各组小鼠气道阻力后处死小鼠取支气管肺泡灌洗液及肺组织.用细胞计数板进行总细胞计数;用瑞氏-吉姆萨染色法进行细胞分类计数;用酶联免疫吸附测定(ELISA)法检测支气管肺泡灌洗液炎性因子水平;用蛋白质印迹法检测肺组织蛋白表达水平.结果 对照组、模型组、地塞米松组、低剂量实验组、高剂量实验组的气道阻力值分别为(0.84±0.08)、(3.34±0.34)、(1.23±0.15)、(2.47±0.19)和(1.54±0.18)cmH2O·s-1,白细胞总数分别为(15.03±0.11)、(331.20±26.64)、(38.73±3.28)、(180.35±16.89)和(82.74±10.51)× 104·mL-1,白细胞介素17(IL-17)水平分别为(4.79±0.58)、(19.21±2.39)、(6.35±0.81)、(15.96±1.10)和(9.04±0.65)pg·mL-1,含V型集和免疫球蛋白结构域4(VSIG4)蛋白表达水平分别为0.67±0.04、0.24±0.04、0.59±0.06、0.37±0.04和0.53±0.05,NOD样受体家族热蛋白结构域相关蛋白3(NLRP3)蛋白表达水平分别为 0.24±0.02、0.74±0.07、0.35±0.04、0.65±0.08 和 0.44±0.03.模型组的上述指标与对照组比较,地塞米松组、低剂量实验组、高剂量实验组的上述指标与模型组比较,在统计学上差异均有统计学意义(均P＜0.05).结论 异甘草素可能通过调节VSIG4/NLRP3复合炎性通路,降低气道阻力、抑制炎性介质的释放改善中性粒细胞哮喘小鼠气道炎性.
Objective To investigate the effect of isoliquiritigenin on airway inflammation mice with neutrophil asthma and its possible mechanism.Methods Neutrophil asthma mouse model were established using ovalbumin.Balb/c mice were randomly divided into control group(equal amounts of 0.9％NaCl were given),model group(ovalbumin modeling),DXM group(intraperitoneal injection of 4 mg·kg-1 dexamethasone),experimental-L,-H groups(intraperitoneal injection of 100,200 mg·kg-1 isoliquiritigenin),with 11 mice in each group.Airway resistance of each group of mice was detected within 24 h after the last atomization excitation,and lung tissue and bronchoalveolar lavage fluid were taken;the total cell count was performed by cell counting plate;the cell classification count was performed by Richs-giemsa staining;the levels of inflammatory factors in bronchoalveolar lavage fluid were detected by enzyme-linked immunosorbent assay;Weatern blot assay was used to detect protein expression in lung tissue.Results The airway resistance values of control group,model group,DXM group,experimental-L group and experimental-H group were(0.84±0.08),(3.34±0.34),(1.23±0.15),(2.47±0.19)and(1.54±0.18)cmH2 O·s-1;the total number of white blood cells were(15.03±0.11),(331.20±26.64),(38.73±3.28),(180.35±16.89)and(82.74±10.51)x 104·mL-1;interleukin 17(IL-17)levels were(4.79±0.58),(19.21±2.39),(6.35±0.81),(15.96±1.10)and(9.04±0.65)pg·mL-1;V-set and immunoglobulin domain-containing 4(VSIG4)protein expression levels were 0.67±0.04,0.24±0.04,0.59±0.06,0.37±0.04 and 0.53±0.05;Nod-like receptor family heat protein domain associated protein 3(NLRP3)protein expression levels were 0.24±0.02,0.74±0.07,0.35±0.04,0.65±0.08 and 0.44±0.03,respectively.The above indexes were compared between the model group and the control group,and the above indexes of DXM,experimental-L and experimental-H groups were compared with model group,and the differences were statistically significant(all P＜0.05).Conclusion Isoliquiritigenin may regulate the VSIG4/NLRP3 complex inflammatory pathway,reduce airway resistance,inhibit the release of inflammatory mediators and improve airway inflammation in mice with neutrophil asthma.
胡清宇;吕宗立;刘文娟
山西药科职业学院 药学系,山西太原 030031山西省汾阳市人民医院呼吸内科,山西汾阳 032200
中医学
异甘草素;中性粒细胞性哮喘;气道炎症;气道阻力;含V型集和免疫球蛋白结构域4/NOD样受体家族热蛋白结构域相关蛋白3信号通路
isoliquiritigenin;neutrophil asthma;airway inflammation;airway resistance;V-set and immunoglobulin domain-containing 4/NOD-like receptor family heat protein domain associated protein 3 signaling pathway
《中国临床药理学杂志》 2024 (006)
869-873 / 5
10.13699/j.cnki.1001-6821.2024.06.018
评论