Effects of Danzhi Jiangtang capsules on myocardial injury of db/db mice based on NLRP3 inflammasome-mediated pyroptosis
- VernacularTitle:基于NLRP3炎症小体介导的细胞焦亡探讨丹蛭降糖胶囊对db/db小鼠心肌损伤的影响
- Author:
Nuo-bing RUAN
1
;
Jin-ju LI
;
Qi XU
;
Jia-wen JING
;
Jia-rong GAO
;
Zhao-hui FANG
Author Information
- Publication Type:Journal Article
- Keywords: Danzhi Jiangtang capsules; diabetes car-diomyopathy; db/db mice; NLRP3 inflammasome; cel-lular pyroptosis; myocardial injury
- From: Chinese Pharmacological Bulletin 2025;41(4):786-792
- CountryChina
- Language:Chinese
- Abstract: Aim To investigate the possible mechanism of the myocardial protective effect of Danzhi Jiangtang capsules(DJC)on db/db mice based on NLRP3 in-flammasome-mediated pyroptosis.Methods The db/db mice were randomly divided into the model group,DJC low,medium,and high dose groups,and the met-formin group,and the db/m mice were taken as the blank group.The administration lasted for eightweeks.At the end of drug administration,blood glucose,blood lipids,cardiac enzymes and inflammatory factors were detected in each group of mice.HE and Masson stai-ning was performed to observe the morphology and fi-brosis of myocardial tissue.TUNEL staining was per-formed to detect apoptosis.RT-qPCR was performed to detect the mRNA expression of ANP,BNP and β-MHC,and Western blot was performed to detect the protein expression of NLRP3,ASC,caspase-1,cleaved-caspase-1,GSDMD and GSDMD-NT in myocardial tis-sue.Results DJC could alleviate myocardial patho-logical damage,reduce collagen deposition and apopto-sis,reduce the levels of blood glucose,blood lipid,myo-cardial enzyme and inflammatory factors in db/db mice.DJC could reduce the mRNA expressions of ANP,BNP and β-MHC,and the protein expressions of NLRP3,ASC,caspase-1,cleavedcaspase-1,GSDMD and GSDMD-NT in myocardial tissues.Conclusion DJC attenuates myocardial injury in db/db mice,prob-ably by inhibiting the activation of NLRP3 inflamma-somes,attenuating cardiomyocyte pyroptosis,and amel-iorating the inflammatory state.
