Exploring the Mechanism of Qingwen Baidu Drink on Lung Injury in Septic Mice Based on the Caspase11-GSDMD-GD-MD-N Pathway
10.14148/j.issn.1672-0482.2025.0333
- VernacularTitle:基于Caspase11-GSDMD-GSDMD-N通路探讨清瘟败毒饮对脓毒症小鼠肺损伤作用机制
- Author:
Yupei ZHAO
1
;
Yu BAI
;
Binchan HE
;
Wei PANG
;
Mengyun LIU
;
Yimin ZHU
Author Information
1. 南京中医药大学第二附属医院,江苏 南京 210017
- Publication Type:Journal Article
- Keywords:
sepsis;
lung injury,F3;
Caspase11;
GSDMD;
GSDMD-N;
Qingwen Baidu Drink
- From:
Journal of Nanjing University of Traditional Chinese Medicine
2025;41(3):333-340
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To explore the mechanism of Qingwen Baidu Drink in treating sepsis-induced lung injury.METHODS One hundred C57BL/6 mice were randomly divided into blank group,model group,Qingwen Baidu Drink low-dose group,Qingwen Baidu Drink medium-dose group,and Qingwen Baidu Drink high-dose group,with 20 mice in each group.HE staining was used to examine the pathological changes of lung tissues.ELISA was used to detect the expression levels of serum interleukin-1β(IL-1β),tumor necrosis factor-α(TNF-α),chemokine ligand 10(CXCL10)and plasma coagulation factor Ⅲ(F3).qPCR was used to detect the mRNA expression levels of monocyte chemoattractant protein-1(MCP-1),cyclooxygenase-2(COX-2)and interferon-γ(IFN-γ)in lung tissues.The number of platelets(PLT)in plasma was analyzed by routine blood analysis instrument.Immunofluorescence a-nalysis was used to detect vascular endothelial cadherin(VE-cadherin),endothelial adhesion junction marker occludin 5(CLDN5)and pericyte marker neuronal collagen antigen 2(NG2)in alveolar capillary endothelial cells.Western blot was used to detect the pro-tein expression levels of cysteine-containing aspartate proteinase 11(Caspase11),GSDMD and GSDMD-N in mouse lung tissues.RESULTS Compared with the blank group,the lung tissue of the mice in the model group showed obvious pathological dam-age.The levels of serum IL-1β,TNF-α,and CXCL10 and the mRNA expression levels of MCP-1,COX-2,and IFN-γ in lung tis-sue were significantly increased(P<0.01),and the number of PLT and the content of F3 in plasma were significantly decreased(P<0.01).The fluorescence expression of VE-cadherin,CLDN5,and NG2 proteins in lung tissue was significantly enhanced(P<0.01),while the expression of Caspase11 and GSDMD-N proteins was increased(P<0.01).Compared with the model group,the pathological damage of the lung tissue of the mice in all doses of Qingwen Baidu Drink groups was alleviated,the levels of serum IL-1β,TNF-α,and CXCL10 and the mRNA expression levels of MCP-1,COX-2,and IFN-γ in lung tissue were significantly decreased(P<0.05,P<0.01),and the number of PLT and the content of F3 in plasma were increased(P<0.05,P<0.01);the fluorescence expression of VE-cadherin,CLDN5,and NG2 proteins in lung tissues was weakened(P<0.05,P<0.01),and the expression of Caspase11 and GSDMD-N/GSDMD proteins was reduced(P<0.05,P<0.01).CONCLUSION Qingwen Baidu Drink can inhibit the activation of GSDMD-N and Caspase11,reduce the release of inflammatory factors,decrease blood loss and damage to vascular barrier function,and thus improve the lung injury caused by sepsis.
