PMID: 9525543Apr 3, 1998Paper

Expression of atrial and brain natriuretic peptides and their genes in hearts of patients with cardiac amyloidosis

Journal of the American College of Cardiology
G TakemuraH Fujiwara

Abstract

We investigated the expression of atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) and their genes in the hearts of patients with cardiac amyloidosis and those with isolated atrial amyloidosis. The expression of ANP and BNP is augmented in the ventricles of failing or hypertrophied hearts, or both. The expression of ANP and BNP in the ventricles of hearts with cardiac amyloidosis, which is hemodynamically similar to restrictive cardiomyopathy, is not yet known. ANP is the precursor protein of isolated atrial amyloid. We analyzed the immunohistocytochemical localizations of ANP and BNP as well as the expression of their mRNAs by in situ hybridization in the myocardium and measured the plasma levels of ANP and BNP in patients with cardiac amyloidosis. Four of the five right and all six left ventricular endomyocardial biopsy specimens obtained from six patients with cardiac amyloidosis were immunohistochemically positive for both ANP and BNP; none of the biopsy specimens from eight normal subjects were positive for ANP or BNP. All four of the right atria obtained at operation showed positive immunoreactions for both peptides. Electron microscopy identified specific secretory granules in ventricular myocytes of ...Continue Reading

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Citations

Mar 9, 2007·Heart Failure Reviews·Michael A Burke, William G Cotts
Dec 15, 2005·Heart, Lung & Circulation·David R SullivanRichmond Jeremy
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