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1.成都中医药大学,成都 611137
2.中国人民解放军总医院 第五医学中心,北京 100039
3.南方医科大学,广州 510000
杨菊,在读硕士,从事中药药理学研究及中药新药研发研究,E-mail:1814263442@qq.com
赵艳玲,博士,教授,博士生导师,从事中药药理学研究及中药新药研发研究,E-mail:zhaoyl2855@126.com
收稿日期:2023-04-10,
网络出版日期:2023-05-31,
纸质出版日期:2023-08-05
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杨菊,张照,王加伟等.清瘟败毒饮对脂多糖诱导急性肺损伤的改善作用及机制[J].中国实验方剂学杂志,2023,29(15):1-13.
YANG Ju,ZHANG Zhao,WANG Jiawei,et al.Ameliorative Effect and Mechanism of Qingwen Baiduyin on Lipopolysaccharide-induced Acute Lung Injury[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(15):1-13.
杨菊,张照,王加伟等.清瘟败毒饮对脂多糖诱导急性肺损伤的改善作用及机制[J].中国实验方剂学杂志,2023,29(15):1-13. DOI: 10.13422/j.cnki.syfjx.20231104.
YANG Ju,ZHANG Zhao,WANG Jiawei,et al.Ameliorative Effect and Mechanism of Qingwen Baiduyin on Lipopolysaccharide-induced Acute Lung Injury[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(15):1-13. DOI: 10.13422/j.cnki.syfjx.20231104.
目的
2
考察清瘟败毒饮对急性肺损伤小鼠的改善作用及其机制。
方法
2
将144只C57BL/6小鼠随机分为正常组、模型组[脂多糖(LPS),5 mg·kg
-1
]、地塞米松组(5 mg·kg
-1
)、清瘟败毒饮低、中、高剂量组(14.105、28.21、56.42 g·kg
-1
),每天给药1次,连续给药5 d。末次给药1 h后,气管内滴注LPS建立急性肺损伤模型,分别于造模后6 h和24 h取材。分析小鼠肺动脉血气指数;检测支气管肺泡灌洗液(BALF)的总蛋白含量、总细胞数、伊文思蓝(EBD)含量和肺组织湿重/干重(W/D);苏木素-伊红(HE)染色观察小鼠肺组织病理变化;蛋白免疫印迹法(Western blot)检测肺组织酪氨酸激酶-1/信号转导与转录激活因子1/干扰素调节因子1(JAK1/STAT1/IRF1)信号通路的关键蛋白表达水平。
结果
2
与正常组比较,模型组小鼠的动脉氧分压(pO
2
)、血氧饱和度(SO
2
)及肺组织W/D明显减少(
P
<
0.05,
P
<
0.01),而二氧化碳分压(pCO
2
)、BALF总蛋白含量、总细胞数、EBD含量、
γ
干扰素(IFN-
γ
)、肿瘤坏死因子-
α
(TNF-
α
)、白细胞介素-1
β
(IL-1
β
)、趋化因子CXC配体1(CXCL1)、趋化因子CXC配体2(CXCL2)、趋化因子CXC配体9(CXCL9)和趋化因子CXC配体10(CXCL10)的含量明显增加(
P
<
0.05,
P
<
0.01);肺组织出现肺泡壁增厚、肺泡腔融合和炎性细胞浸润;M1型巨噬细胞极化比例和肺细胞凋亡明显增多(
P
<
0.05);JAK1、磷酸化酪氨酸激酶-1(p-JAK1)、诱导型一氧化氮合酶(iNOS)、STAT1、磷酸化信号转导与转录激活因子1(p-STAT1)、IRF1、Gasdermin蛋白D(GSDMD)和混合谱系激酶结构域样蛋白(MLKL)的蛋白表达水平明显升高(
P
<
0.05,
P
<
0.01)。与模型组比较,清瘟败毒饮明显增加pO
2
、SO
2
及肺组织W/D(
P
<
0.05,
P
<
0.01);显著改善肺组织病理变化;明显降低pCO2、总蛋白含量、总细胞数、EBD含量、IFN-
γ
、TNF-
α
、IL-1
β
、CXCL1、CXCL2、CXCL9和CXCL10的含量、M1型巨噬细胞极化比例及JAK1、p-JAK1、iNOS、STAT1、p-STAT1、IRF1、GSDMD和MLKL的蛋白表达水平(
P
<
0.05,
P
<
0.01)。
结论
2
清瘟败毒饮可通过抑制JAK1/STAT1/IRF1信号通路,改善急性肺损伤小鼠的肺部炎症反应,减少肺细胞凋亡,从而发挥肺保护作用。
To investigate the therapeutic effect and mechanism of Qingwen Baiduyin on acute lung injury (ALI) in mice induced by lipopolysaccharide (LPS).
Method
2
A total of 144 C57BL/6 mice were randomly divided into the following groups: a normal group, a model group (LPS, 5 mg·kg
-1
), a dexamethasone group (5 mg·kg
-1
), and low-, medium-, and high-dose Qingwen Baiduyin groups (14.105, 28.21, 56.42 g·kg
-1
). The mice were treated once daily for 5 days. One hour after the final administration, the ALI model was established by intratracheal instillation of LPS, and samples were collected at 6 h and 24 h after modeling. The arterial blood gas index of mice was analyzed. The total protein content, total cell count, Evans blue dye (EBD) content, and lung tissue wet-to-dry weight ratio (W/D) of bronchoalveolar lavage fluid (BALF) were measured. Hematoxylin-eosin (HE) staining was performed to assess the pathological changes in mouse lung tissue. Western blot was used to detect the expression levels of key proteins in the Janus kinase 1/signal transducer and activator of transcription 1/interferon regulatory factor 1 (JAK1/STAT1/IRF1) signaling pathway in lung tissue.
Result
2
Compared with the normal group, the model group showed reduced arterial oxygen pressure (pO
2
), oxygen saturation (SO
2
), and lung tissue W/D (
P
<
0.05,
P
<
0.01), increased carbon dioxide pressure (pCO
2
), total protein content, total cell count, EBD content, interferon-
γ
(IFN-
γ
), tumor necrosis factor-
α
(TNF-
α
), interleukin-1
β
(IL-1
β
), chemokine CXC ligand 1 (CXCL1), chemokine CXC ligand 2 (CXCL2), chemokine CXC ligand 9 (CXCL9), and chemokine CXC ligand 10 (CXCL10) content (
P
<
0.05,
P
<
0.01), thickening of the alveolar walls, fusion of alveolar cavities, and infiltration of inflammatory cells in lung tissue, increased proportion of M1 macrophage polarization and lung cell apoptosis (
P
<
0.05), and increased protein expression levels of JAK1, phosphorylated JAK1 (p-JAK1), inducible nitric oxide synthase (iNOS), STAT1, phosphorylated STAT1 (p-STAT1), IRF1, gasdermin D (GSDMD), and mixed lineage kinase domain-like protein (MLKL) (
P
<
0.05,
P
<
0.01). Compared with the model group, Qingwen Baiduyin significantly increased pO
2
, SO
2
, and lung tissue W/D (
P
<
0.05,
P
<
0.01), improved the pathological changes in lung tissue, and reduced pCO
2
, total protein content, total cell count, EBD content, IFN-
γ
, TNF-
α
, IL-1
β
, CXCL1, CXCL2, CXCL9, and CXCL10 content, proportion of M1 macrophage polarization, and protein expression levels of JAK1, p-JAK1, iNOS, STAT1, p-STAT1, IRF1, GSDMD, and MLKL (
P
<
0.05,
P
<
0.01).
Conclusion
2
Qingwen Baiduyin can improve the lung inflammatory response and reduce lung cell apoptosis in mice with ALI by inhibiting the JAK1/STAT1/IRF1 signaling pathway, thereby exerting a lung-protective effect.
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