title: Acute cardiac volume load-related changes in plasma atrial natriuretic peptide and N-terminal pro-B-type natriuretic peptide concentrations in healthy dogs.
abstract: Plasma atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) have been used for the diagnosis of heart disease. The aim of the study was to investigate differences in secretory responses of plasma ANP and N-terminal proBNP (NT-proBNP) concentrations related to acute changes in preload. Six dogs were anaesthetised and infused intravenously with Ringer's solution (90-100mL/kg/h) for 60 min. Thereafter, furosemide was administered and dogs were monitored for 60 min. Plasma ANP and NT-proBNP concentrations were determined by chemiluminescence enzyme immunoassay and enzyme immunoassay, respectively. Volume overload significantly increased plasma ANP and NT-proBNP concentrations (P<0.001); however, preload reduction significantly reduced plasma ANP concentrations (P<0.05) without concurrent changes in plasma NT-proBNP. Mean pulmonary capillary wedge pressures were strongly correlated with plasma ANP concentrations (r=0.53, P<0.001), but not plasma NT-proBNP. Thus, plasma ANP is a useful, non-invasive parameter for measuring rapid haemodynamic changes.
authors.affiliation: Department of Small Animal Internal Medicine, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan. hori@vmas.kitasato-u.ac.jp
authors.forename: Yasutomo
authors.initials: Y
authors.lastname: Hori
authors.forename: Naoya
authors.initials: N
authors.lastname: Sano
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Kanai
authors.forename: Fumio
authors.initials: F
authors.lastname: Hoshi
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Itoh
authors.forename: Sei-Ichi
authors.initials: S
authors.lastname: Higuchi
mesh_terms: D000818:Animals; D009320:Atrial Natriuretic Factor / Q000097:blood*; D015415:Biomarkers / Q000097:blood; D002306:Cardiac Volume / Q000502:physiology*; D004285:Dogs / Q000097:blood / Q000502:physiology*; D005260:Female; D006304:Health Status; D006439:Hemodynamics; D007262:Infusions, Intravenous / Q000662:veterinary; D008297:Male; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D011669:Pulmonary Wedge Pressure
chemical_list: D015415:Biomarkers; D010446:Peptide Fragments; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain; D009320:Atrial Natriuretic Factor