肺间质纤维化急性加重期小鼠模型的建立与评价  

Establishment and evaluation of a mouse model of acute exacerbation of interstitial pulmonary fibrosis

作　　者：武文静 朱思源 桑星洁 张琴 赵鹏 张海龙[1,2] 白云苹[1,2] WU Wenjing;ZHU Siyuan;SANG Xingjie;ZHANG Qin;ZHAO Peng;ZHANG Hailong;BAI Yunping(Collaborative Innovation Center for Prevention and Treatment of Traditional Chinese Medicine,Henan University of Chinese Medicine,Key Laboratory of Prevention and Treatment of Respiratory Diseases in Henan Province,Zhengzhou 450046,China;Respiratory Department,First Affiliated Hospital of Henan University of Chinese Medicine,Zhengzhou 450003,China)

机构地区：[1]河南中医药大学呼吸疾病中医药防治省部共建协同创新中心,河南省中医药防治呼吸病重点实验室,河南郑州450046 [2]河南中医药大学第一附属医院呼吸科,河南郑州450003

出　　处：《中国病理生理杂志》2025年第4期816-824,共9页Chinese Journal of Pathophysiology

基　　金：国家自然科学基金资助项目(No.81904170);河南省科技研发计划联合基金(优势学科培育类)资助项目(No.232301420091)。

摘　　要：目的:建立肺间质纤维化(IPF)急性加重期小鼠模型。方法:120只雄性C57BL/6小鼠,随机分为阴性对照(control)组、肺间质纤维化稳定期(IPF)组和肺间质纤维化急性加重期(AE-IPF)组,每组40只。IPF组小鼠分别于第0、14和28天经气管滴注低剂量博来霉素(3 mg/kg);AE-IPF组在IPF组基础上,于第56天气管滴注高剂量博来霉素(5 mg/kg);control组于不同时点分别滴注等量生理盐水。实验于首次造模后第57、59、63和70天取材,观察小鼠一般情况、CT影像学变化、HE与Masson染色观察肺组织肺泡炎及纤维化程度,检测小鼠肺功能、肺组织羟脯氨酸含量、支气管肺泡灌洗液中白细胞介素6(IL-6)含量。结果:AE-IPF组小鼠出现明显喘息气促,呼吸困难,体重下降;CT影像学显示,IPF组显示斑片状、胸膜下网状模糊影,伴小叶间隔不规则增厚和小叶内线状影,牵拉性支气管扩张,AE-IPF组在IPF基础上,有新出现的磨玻璃阴影和实变影;AE-IPF组小鼠肺功能通气量显著下降(P<0.05),肺指数显著升高(P<0.05),出现急性肺水肿;AE-IPF组小鼠HE、Manson染色改变符合AE-IPF病理表现;AE-IPF组肺组织羟脯氨酸含量、支气管肺泡灌洗液中细胞总数与IL-6质量浓度较对照组显著升高(P<0.05)。结论:采用不同剂量多次气管滴注博来霉素能够成功建立AE-IPF小鼠动物模型,可为研究AE-IPF的发病机制和药物治疗效果提供有效手段。AIM:A mouse model of acute exacerbation of idiopathic pulmonary fibrosis(AE-IPF)was established.METHODS:One hundred and twenty male C57BL/6 mice were randomly divided into a negative control group,an IPF group,and an acute exacerbation of interstitial fibrosis(AE-IPF)group.The IPF group received a low dose(3 mg/kg)of bleomycin(BLM)by endotracheal drip on days 0,14,and 28.The AE-IPF group received a high dose(5 mg/kg)of BLM by endotracheal drip on day 56.The control group received an equal volume of saline at different time points.The AE-IPF group was injected with a high dose(5 mg/kg)of BLM via tracheal drip on day 56 on top of the initial IPF induction,while the control group received equal amounts of saline at different time points.Experiments were conducted on the 57th,59th,63rd,and 70th days after the initial modeling.Mice were observed for general conditions,CT imaging changes,HE,and Masson staining to assess the degree of alveolitis and fibrosis in lung tissues.Lung function,hydroxyproline(HYP)content in lung tissues,and interleukin-6(IL-6)content in bronchoalveolar lavage fluid(BALF)were also measured.RESULTS:Mice in the AE-IPF group exhibited wheezing,shortness of breath,dyspnea,and weight loss.CT imaging revealed that IPF group mice showed patchy,subpleural reticular fuzzy shadows with irregular thickening of interlobular septa and intralobular linear shadows,along with tractional bronchiectasis.In the AE-IPF group,new ground-glass shadows and solid shadows appeared in addition to the IPF features.AE-IPF group mice demonstrated decreased lung function,elevated lung index,and acute pulmonary edema.HE and Masson staining of AE-IPF group mice showed consistent pathological manifestations of AE-IPF.HYP content in lung tissues,total cell count in BALF,and IL-6 concentration were significantly higher in the AE-IPF group compared to the control group(P<0.05).CONCLUSION:The use of multiple tracheal drip administrations of bleomycin successfully established an AE-IPF animal model in mice.The 63rd day of the exper

关 键 词：肺间质纤维化 急性加重期 博来霉素 动物模型 

分 类 号：R363.2[医药卫生—病理学] R563[医药卫生—基础医学] R-33