Document Detail


Influence of the renin-angiotensin system and atrial natriuretic peptide on renal functional reserve.
MedLine Citation:
PMID:  8107949     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We studied the renin-angiotensin system (RAS) and atrial natriuretic peptide (ANP) after amino acid loading in order to elucidate whether or not glomerular hyperfiltration is mediated by these hormones. Eight healthy controls without kidney disease (group 1), 8 renal graft recipients (group 2) and 8 patients after nephrectomy (group 3) were studied. Furthermore, we investigated the influence of amino acid loading on RAS and ANP and glomerular filtration during acute application of captopril in healthy controls. Clearances in insulin (CIn) and para-aminohippuric acid (CPAH) were determined during an infusion of 0.9% saline and during amino acid loading. CIn increased in healthy controls from 96.5 +/- 3.3 to 111.9 +/- 4.4 ml/min (p < 0.01), CPAH rose from 577 +/- 28.7 to 618.9 +/- 38 ml/min (p = NS). During the combined application of amino acid infusion and 25 mg captopril, CIN increased to 125.0 +/- 16.4 ml/min/1.73 m2 (p < 0.01) and there was no significant increase in CPAH which was 595 +/- 77 ml/min/1.73 m2. There was no significant change in renal vascular resistance, but filtration fraction increased from 17 +/- 1 to 19 +/- 1% under amino acid infusion and increased further under the application of captopril to 21 +/- 2% (p < 0.05). In renal graft recipients, CIn had a tendency to increase during amino acid infusion from 78.4 +/- 5.8 to 84.7 +/- 6.5 ml/min (p = NS). In patients after nephrectomy, CIn did not increase (84.5 +/- 6 ml/min) but CPAH did from 345.7 +/- 26.3 to 409 +/- 24.1 ml/min (p < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
P Heering; D Wyes; J Plum; B Grabensee
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Nephron     Volume:  66     ISSN:  0028-2766     ISO Abbreviation:  Nephron     Publication Date:  1994  
Date Detail:
Created Date:  1994-03-18     Completed Date:  1994-03-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0331777     Medline TA:  Nephron     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  14-20     Citation Subset:  IM    
Affiliation:
Department of Nephrology, Heinrich Heine University, Düsseldorf, FRG.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aldosterone / physiology
Amino Acids / administration & dosage
Atrial Natriuretic Factor / physiology*
Captopril / pharmacology
Female
Glomerular Filtration Rate / drug effects,  physiology
Humans
Infusions, Intravenous
Kidney / drug effects,  physiology*
Kidney Transplantation / physiology
Male
Middle Aged
Nephrectomy
Renal Circulation / drug effects,  physiology
Renin-Angiotensin System / drug effects,  physiology*
Chemical
Reg. No./Substance:
0/Amino Acids; 52-39-1/Aldosterone; 62571-86-2/Captopril; 85637-73-6/Atrial Natriuretic Factor

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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