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Transverse Aortic Constriction in Mice
08:25

Transverse Aortic Constriction in Mice

Published on: April 21, 2010

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SS31 therapy effectively protects the heart against transverse aortic constriction-induced hypertrophic

Hung-I Lu1, Fan-Yen Lee1, Christopher Glenn Wallace2

  • 1Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of MedicineKaohsiung 83301, Taiwan.

American Journal of Translational Research
|January 10, 2018
PubMed

Insights

SS31 therapy effectively protected the heart from transverse aortic constriction-induced hypertrophic cardiomyopathy. This peptide treatment reduced cardiac damage, inflammation, and oxidative stress, preserving heart function in mice.

Area of Science:

  • Cardiovascular Biology
  • Pharmacology
  • Mitochondrial Medicine

Background:

  • Hypertrophic cardiomyopathy (HCM) is a significant cardiovascular disease.
  • Transverse aortic constriction (TAC) is a common model for inducing cardiac hypertrophy and dysfunction.
  • Mitochondrial dysfunction and oxidative stress play key roles in the pathogenesis of HCM.

Purpose of the Study:

  • To investigate the protective effects of SS31 therapy against TAC-induced cardiac damage.
  • To evaluate the impact of SS31 on cardiac function, cellular damage, and molecular pathways in a mouse model of HCM.

Main Methods:

  • Adult male mice underwent TAC or sham surgery.
  • Mice received SS31 treatment (2.0 mg/kg/day) starting 28 days post-TAC.
  • Cardiac function, histology, and protein expression of inflammatory, apoptotic, fibrotic, and oxidative stress markers were assessed at 60 days.

Main Results:

  • SS31 treatment significantly improved left ventricular ejection fraction and reduced cardiac hypertrophy compared to TAC alone.
  • SS31 suppressed TAC-induced increases in apoptotic nuclei, inflammatory cell infiltration, oxidative stress biomarkers, and fibrosis.
  • SS31 modulated key signaling pathways involved in inflammation, apoptosis, fibrosis, and mitochondrial damage.

Conclusions:

  • SS31 therapy demonstrates significant cardioprotective effects against TAC-induced hypertrophic cardiomyopathy.
  • SS31 mitigates cardiac damage by reducing inflammation, oxidative stress, apoptosis, and fibrosis.
  • SS31 represents a promising therapeutic agent for managing HCM and related cardiovascular conditions.

Keywords:
SS31 therapyTransverse aortic constrictionhypertrophic cardiomyopathy

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