Brain natriuretic peptide appears to act locally as an antifibrotic factor in the heart.

Abstract excerpt

In addition to cardiac myocyte hypertrophy, proliferation and increased extracellular matrix production of cardiac fibroblasts occur in response to cardiac overload. This remodeling of the cardiac interstitium is a major determinant of pathologic hypertrophy leading to ventricular dysfunction and heart failure. Atrial and brain natriuretic peptides (ANP and BNP) are cardiac hormones produced primarily by the...

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