| Low dose atrial natriuretic factor in primary aldosteronism: renal, hemodynamic, and vascular effects. | |
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MedLine Citation:
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PMID: 2527199 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Whether atrial natriuretic factor (ANF) plays a physiological role in primary aldosteronism has yet to be determined. In the present study, the renal, hemodynamic, humoral, and vascular effects of a synthetic (WY-47663) human analogue were studied in five water-loaded (15 ml H2O/kg) patients with adenomatous primary aldosteronism, a salt-sensitive, low renin, volume-expanded syndrome. ANF was infused for 3 hours at a low rate (0.005 micrograms/kg/min), which approximately doubled circulating immunoreactive ANF. Glomerular filtration rate and renal blood flow (inulin and para-aminohippurate clearance) remained stable, but sodium excretion increased significantly suggesting a dissociation between renal hemodynamics and natriuresis as well as a direct inhibitory effect on tubular sodium reabsorption by ANF. Intra-arterial diastolic blood pressure, heart rate, forearm blood flow (plethysmographic method), and arterial plasma norepinephrine did not change, but systolic blood pressure declined and hematocrit rose suggesting plasma volume contraction by ANF. Plasma aldosterone levels were unchanged indicating a loss of ANF-mediated aldosterone inhibition, possibly related to qualitative or quantitative alterations of ANF receptors in tumoral adrenal tissue. Infusion of the analogue into the brachial artery was at a rate of 0.005 micrograms/dl forearm tissue/min x 30 minutes, which also doubled local immunoreactive venous ANF concentrations and vasodilated forearm arterioles. These data suggest a physiological role for ANF in modulating body fluid volume even in human primary aldosteronism. |
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Authors:
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R Pedrinelli; G Panarace; M Spessot; S Taddei; S Favilla; L Graziadei; A Lucarini; A Salvetti |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Hypertension Volume: 14 ISSN: 0194-911X ISO Abbreviation: Hypertension Publication Date: 1989 Aug |
Date Detail:
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Created Date: 1989-09-08 Completed Date: 1989-09-08 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7906255 Medline TA: Hypertension Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 156-63 Citation Subset: IM |
Affiliation:
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Hypertension Unit, I Clinica Medica, University of Pisa, Italy. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Atrial Natriuretic Factor / blood, pharmacology* Female Hematocrit Hemodynamics / drug effects* Humans Hyperaldosteronism / physiopathology* Kidney / drug effects* Male Middle Aged |
| Chemical | |
Reg. No./Substance:
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85637-73-6/Atrial Natriuretic Factor |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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