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2024 08 v.59 1398-1404
麻黄碱调控TGF-β1/Smads通路对支气管哮喘小鼠气道重塑的影响
基金项目(Foundation): 河南省中医药科学研究专项(编号:20-21ZY2057)
邮箱(Email): xiaoxiannv800@163.com;
DOI: 10.19405/j.cnki.issn1000-1492.2024.08.016
中文作者单位:

河南省中医院(河南中医药大学第二附属医院)儿科;河南中医药大学儿科医学院;

摘要(Abstract):

目的 探究麻黄碱对支气管哮喘小鼠气道重塑的影响及对转化生长因子β1(TGF-β1)/Smads通路的调控作用。方法 将所有小鼠随机分为对照组、模型组、地塞米松组、麻黄碱低剂量组、麻黄碱高剂量组、麻黄碱高+TGF-β1激活剂组,每组12只。除对照组,其余组小鼠腹腔注射含有40μg卵清蛋白(OVA)和2 mg 10%氢氧化铝的致敏液诱导哮喘模型。8周后,检测各组小鼠气道高反应性;对支气管肺泡灌洗液(BALF)中嗜酸性粒细胞进行计数;ELISA检测BALF中白细胞介素(IL)-4、IL-5和IL-13的水平;苏木精-伊红(HE)染色和Masson染色观察小鼠肺组织的病理学变化及胶原纤维面积;免疫组织化学检测小鼠肺组织中α-平滑肌肌动蛋白(α-SMA)表达;Western blot检测小鼠肺组织中TGF-β1/Smads通路相关蛋白的表达。结果 与对照组相比,模型组小鼠不同乙酰甲胆碱剂量下的气道高反应性、气道壁的总面积(Wat)/基底膜的周长(Pbm)比值、胶原纤维面积、嗜酸性粒细胞及IL-4、IL-5、IL-13含量、α-SMA、TGF-β1表达及p-Smad2/Smad2、p-Smad3/Smad3比值均升高(P<0.05),Smad7表达降低(P<0.05);与模型组相比,地塞米松组和麻黄碱低、高剂量组小鼠不同乙酰甲胆碱剂量下的气道高反应性、Wat/Pbm比值、胶原纤维面积、嗜酸性粒细胞及IL-4、IL-5、IL-13含量、α-SMA、TGF-β1表达及p-Smad2/Smad2、p-Smad3/Smad3比值均降低(P<0.05),Smad7表达升高(P<0.05);与麻黄碱高剂量组相比,麻黄碱高+TGF-β1激活剂组小鼠不同乙酰甲胆碱剂量下的气道高反应性、Wat/Pbm比值、胶原纤维面积、嗜酸性粒细胞及IL-4、IL-5、IL-13含量、α-SMA、TGF-β1表达及p-Smad2/Smad2、pSmad3/Smad3比值均升高(P<0.05),Smad7表达降低(P<0.05)。结论 麻黄碱可以改善支气管哮喘小鼠的气道重塑,其机制与调控TGF-β1/Smads信号通路有关。

关键词(KeyWords): 麻黄碱;;支气管哮喘;;转化生长因子β1;;Smad蛋白;;气道重塑
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基本信息:

DOI:10.19405/j.cnki.issn1000-1492.2024.08.016

中图分类号:R285.5

引用信息:

[1]范慧慧,任玉梅,田新磊等.麻黄碱调控TGF-β1/Smads通路对支气管哮喘小鼠气道重塑的影响[J].安徽医科大学学报,2024,59(08):1398-1404.DOI:10.19405/j.cnki.issn1000-1492.2024.08.016.

基金信息:

河南省中医药科学研究专项(编号:20-21ZY2057)

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