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Removal of atrial natriuretic peptide by perfused rabbit lungs in situ

Journal Article · · Biochem. Biophys. Res. Commun.; (United States)

Removal of iodinated 28-amino acid atrial natriuretic peptide ((/sup 125/I)ANP) by rabbit lungs was measured by indicator-dilution methods. After bolus injection of 6.5 pmoles of (/sup 125/I)ANP, 66.9 +/- 2.9% was removed in a single pass through the lungs. Removal was unaltered by a kininase II inhibitor but was reversibly decreased by unlabelled ANP. Thus the lungs can remove ANP from the pulmonary circulation by a mechanism that does not involve hydrolysis by kininase II. Lungs therefore may be involved in regulating systemic concentrations and hence renal and other actions of ANP.

Research Organization:
Yale Univ. School of Medicine, New Haven, CT
OSTI ID:
6915104
Journal Information:
Biochem. Biophys. Res. Commun.; (United States), Journal Name: Biochem. Biophys. Res. Commun.; (United States) Vol. 3; ISSN BBRCA
Country of Publication:
United States
Language:
English