Canagliflozin Ameliorates Myocardial Fibrosis and Cardiac Function in Chronic Heart Failure: A Dose-Independent

Haomiao Yu1,2, Zhenzhong Han1,2, Wanpeng Chang3

  • 1Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China.

Insights

Canagliflozin effectively reduces cardiac fibrosis and improves heart function in chronic heart failure rats. The drug

Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Myocardial fibrosis drives chronic heart failure progression.
  • Understanding canagliflozin's mechanism against cardiac fibrosis is crucial.

Purpose of the Study:

  • Investigate canagliflozin's effect on cardiac fibrosis in chronic heart failure rats.
  • Determine the dose-dependent efficacy of canagliflozin.

Main Methods:

  • Established chronic heart failure in rats using isoproterenol.
  • Administered canagliflozin (low/high dose) or enalapril for 4 weeks.
  • Assessed cardiac function, fibrosis markers, gene expression (RNA sequencing, qRT-PCR).

Main Results:

  • Canagliflozin improved cardiac function and reduced N-terminal pro-B-type natriuretic peptide.
  • Histological analysis showed reduced collagen deposition and myocardial fibrosis.
  • Canagliflozin inhibited expression of Collagen I, Collagen III, and fibronectin 1.
  • RNA sequencing revealed enrichment in ECM-receptor interaction pathway.
  • Gene expression analysis confirmed reduced levels of fibrosis-related genes.
  • No significant dose-dependent efficacy difference observed between low and high doses.

Conclusions:

  • Canagliflozin directly improves myocardial fibrosis, aiding chronic heart failure management.
  • Canagliflozin's efficacy in this model appears not to be dose-dependent.

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