YU Yaxin,SHEN Yan,CAO Yu,et al.Effect of Modified Yiwei Shengyang Decoction on myocardial fibrosis in heart failure with preserved ejection fraction mice[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(6):22-27.
YU Yaxin,SHEN Yan,CAO Yu,et al.Effect of Modified Yiwei Shengyang Decoction on myocardial fibrosis in heart failure with preserved ejection fraction mice[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(6):22-27. DOI: 10.16305/j.1007-1334.2025.z20241015002.
Effect of Modified Yiwei Shengyang Decoction on myocardial fibrosis in heart failure with preserved ejection fraction mice
To investigate the efficacy of Modified Yiwei Shengyang Decoction (MYSD) on heart failure with preserved ejection fraction (HFpEF) and its ability to improve myocardial fibrosis.
Methods
2
C57BL/6 mice were used to establish an HFpEF model by administering a high-fat diet (HFD) combined with
N
-nitro-
L
-arginine methyl ester (
L
-NAME). The mice were randomly assigned into five groups: blank control group (BC), model group (MC), sacubitril/valsartan treatment group (AC), MYSD treatment group (YSD), and double-dose MYSD treatment group (YSD-H). Echocardiographic assessments were performed to investigate the impact of MYSD on both structural and functional parameters in the hearts of HFpEF mice. A swimming endurance test was conducted to evaluate exercise tolerance in the mice. Masson's trichrome (Masson) staining and wheat germ agglutinin (WGA) staining were employed to analyze pathological alterations in cardiac tissues. Brain natriuretic peptide (BNP), matrix metalloproteinase-9 (MMP-9), and tissue inhibitor of metalloproteinase-1 (TIMP-1) were detected using enzyme-linked immunosorbent assay (ELISA) to evaluate cardiac function and fibrosis. Immunohistochemical staining and Western blot were used to detect the expression levels of cyclic GMP-AMP synthase (cGAS) and proteins involved in the stimulator of interferon genes (STING) pathway.
Results
2
After intervention with MYSD compared with MC mice: The myocardial diastolic function of the mice was restored (
P
<
0.05); Swimming time increased (
P
<
0.05); Masson staining showed decreased relative collagen area (
P
<
0.05); WGA staining revealed a reduced relative cross-sectional area of myocardial cells (
P
<
0.05); Expression of BNP, TIMP-1, and MMP-9 decreased (
P
<
0.05); cGAS and STING protein expression was downregulated (
P
<
0.05).
Conclusion
2
MYSD significantly mitigates cardiac fibrosis and myocardial hypertrophy while enhancing heart function in HFpEF mouse models; it also suppresses cGAS and STING expression, indicating its therapeutic effect on HFpEF.
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