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Updated: Aug 3, 2026
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Gene Transfer for Ischemic Heart Failure in a Preclinical Model
Published on: May 15, 2011
Ventricular BNP gene expression in acute cardiac overload
Roberto Roncon-Albuquerque1, Tiago Henriques-Coelho, Carla Santos-Araújo
1Serviço de Fisiologia da Faculdade de Medicina da Universidade do Porto, Porto, Portugal.
Summary
B-type natriuretic peptide (BNP) gene expression increases in ventricles during acute cardiac overload. This suggests BNP plays a role in early ventricular remodeling in heart failure.
Area of Science:
- Cardiovascular Physiology
- Molecular Cardiology
- Biochemistry
Background:
- B-type natriuretic peptide (BNP) is crucial for diagnosing and prognosing heart failure (HF).
- BNP exhibits antiproliferative and antifibrotic effects on the cardiovascular system.
- Ventricular BNP expression is debated, with atria being the primary source under normal conditions.
Purpose of the Study:
- To investigate ventricular BNP gene expression in a rat model.
- To assess BNP expression at baseline and under acute cardiac pressure and volume overload.
Main Methods:
- Rats underwent acute pressure overload (pulmonary trunk banding) or volume overload (Dextran 40 perfusion) for 6 hours.
- Sham-operated rats served as controls.
- Right ventricular free wall samples were analyzed for BNP mRNA using RT-quantitative real-time PCR.
Main Results:
- Basal BNP mRNA expression was detected in the ventricles of sham-operated rats.
- Both pressure overload and volume overload significantly increased ventricular BNP mRNA levels by over 120% and 170%, respectively.
Conclusions:
- Acute pressure and volume overload stimulate ventricular BNP gene expression.
- These findings indicate BNP's potential involvement in early ventricular remodeling processes.
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