Key result
4-Methylumbelliferone attenuated circulating and cardiac leukocyte numbers, reduced myocardial fibrosis, and decreased left ventricular hypertrophy in mice after transverse aortic constriction.
Why the study?
Hyaluronic acid modulates profibrotic signals in response to cardiac wall stress, but whether inhibiting its synthesis with 4-methylumbelliferone attenuates inflammation and extracellular matrix remodeling in pressure-overloaded myocardium was unknown.
Does 4-methylumbelliferone attenuate inflammation and extracellular matrix remodeling in a mouse model of pressure-overloaded myocardium?
Population
C57BL/6J male mice subjected to TAC surgery
Comparison
4-MU-treated vs untreated mice
Design
Animal experimental study
Follow-up
7 weeks
Authors
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Hypothesis-generating for hyaluronan inhibition in pressure-overload remodeling; leaves open translation to human therapies.
Does 4-methylumbelliferone attenuate inflammation and extracellular matrix remodeling in a mouse model of pressure-overloaded myocardium?
In a mouse model of pressure overload, inhibition of hyaluronic acid synthesis with 4-methylumbelliferone reduced macrophage-driven inflammation, myocardial fibrosis, and left ventricular hypertrophy while improving cardiac output.
Hackert et al. (2021) studied Pressure-overloaded myocardium. 4-methylumbelliferone (4-MU) vs. Untreated mice was evaluated on Inflammation and extracellular matrix remodeling. 4-Methylumbelliferone attenuated circulating and cardiac leukocyte numbers, reduced myocardial fibrosis, and decreased left ventricular hypertrophy in mice after transverse aortic constriction.
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