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Updated: May 30, 2026
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Transverse Aortic Constriction in Mice
Published on: April 21, 2010
Mice lacking functional TRPV1 are protected from pressure overload cardiac hypertrophy
Cadie L Buckley1, Alexander J Stokes
1Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, USA.
Channels (Austin, Tex.)
|August 5, 2011
Summary
Transient receptor potential vanilloid 1 (TRPV1) channels play a role in cardiac hypertrophy. Blocking TRPV1 improved heart function and reduced cardiac remodeling in a pressure overload model.
Area of Science:
- Cardiovascular Science
- Molecular Biology
- Physiology
Background:
- Transient receptor potential vanilloid 1 (TRPV1) is known as a pain receptor in sensory neurons.
- TRPV1 is also expressed in the cardiovascular system, including the heart.
- TRPV1 expression increases in the hypertrophic heart, suggesting a potential role in cardiac remodeling.
Purpose of the Study:
- To investigate the role of TRPV1 in regulating cardiac hypertrophy.
- To determine if TRPV1 contributes to the progression of cardiac hypertrophy and heart failure.
Main Methods:
- Utilized a mouse model of pressure overload-induced cardiac hypertrophy via transverse aortic constriction.
- Compared cardiac function, fibrosis, and apoptosis in wild-type mice versus TRPV1 knockout mice.
Main Results:
- Mice lacking functional TRPV1 exhibited improved heart function compared to wild-type controls.
- TRPV1 knockout mice showed reduced markers of cardiac hypertrophy, fibrosis, and apoptosis.
- These findings indicate TRPV1 signaling exacerbates cardiac remodeling under pressure overload.
Conclusions:
- TRPV1 plays a significant role in the development and progression of cardiac hypertrophy.
- Targeting TRPV1 may offer a novel therapeutic strategy for treating cardiac hypertrophy and heart failure.
