Adiponectin-mediated modulation of hypertrophic signals in the heart
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View abstract on PubMed
Summary
This summary is machine-generated.Adiponectin deficiency exacerbates cardiac hypertrophy and mortality in mice. Supplementing adiponectin protects against cardiac hypertrophy by activating AMP-activated protein kinase (AMPK), suggesting therapeutic potential for obesity-linked heart disease.
Area Of Science
- Cardiovascular Biology
- Metabolic Disease Research
- Molecular Cardiology
Background
- Obesity-linked conditions, including diabetes, increase cardiovascular disease risk.
- Adiponectin, an adipocytokine, is reduced in obesity and related diseases.
- Cardiac hypertrophy is a significant risk factor for cardiovascular mortality.
Purpose Of The Study
- To investigate the role of adiponectin in pressure overload-induced cardiac hypertrophy.
- To elucidate the signaling pathways involved in adiponectin's effects on the heart.
- To assess the therapeutic potential of adiponectin in cardiac hypertrophy models.
Main Methods
- Utilized adiponectin-deficient mice subjected to pressure overload.
- Administered adenovirus-mediated adiponectin supplementation in various mouse models (adiponectin-deficient, wild-type, db/db).
- Performed in vitro studies using cardiac myocytes to examine adiponectin and AMP-activated protein kinase (AMPK) signaling.
Main Results
- Adiponectin deficiency worsened cardiac hypertrophy and mortality under pressure overload, linked to increased extracellular signal-regulated kinase (ERK) and decreased AMPK signaling.
- Adiponectin supplementation attenuated cardiac hypertrophy in multiple mouse models.
- In cardiac myocytes, adiponectin activated AMPK and inhibited hypertrophy and ERK activation, effects reversed by dominant-negative AMPK.
Conclusions
- Adiponectin protects against cardiac hypertrophy by activating AMPK signaling.
- Adiponectin may serve as a therapeutic agent for hypertrophic cardiomyopathy in diabetes and obesity-related diseases.
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