Document Detail


Albumin synthesis after intense intermittent exercise in human subjects.
MedLine Citation:
PMID:  9475869     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We measured hepatic albumin synthesis in five volunteers (4 men and 1 woman) at 3 and 6 h after recovery from intense exercise. A primed-constant infusion of a stable isotopic tracer of phenylalanine was used to determine hepatic fractional synthetic rate (FSR) and absolute synthetic rate (ASR) of albumin from the enrichment of phenylalanine in albumin. The infusion of the stable isotope tracer began 2 h after upright exercise or upright rest. Albumin FSR and ASR were 6.39 +/- 0.48%/day and 120 +/- 9 mg.kg body wt-1.day-1, respectively, 3-6 h after recovery from exercise; the FSR and ASR on the time control study day were 5.94 +/- 0.47%/day and 104 +/- 9 mg.kg body wt-1.day-1, respectively. The 6 and 16% increases (P < 0.05) in FSR and ASR after exercise were associated with an elevated plasma albumin content at 5 and 6 h of recovery (P < 0.05), an increased total protein content throughout recovery (P < 0.05), and a negative free water clearance (P < 0.05) at 2, 3, and 6.5 h of recovery compared with baseline values; these variables were unchanged from their baselines on the time control study day. Increased albumin content and reduced free water clearance contribute to a retention of fluid within the circulation after intense exercise. The measured increase in albumin synthesis could not account for the entire increase in albumin content at 6 h of recovery from exercise. However, we estimate that if the increased activity was maintained for the next 18 h, it could account for the expected increase in albumin content at 24 h of recovery.
Authors:
R C Yang; G W Mack; R R Wolfe; E R Nadel
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  84     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-03-24     Completed Date:  1998-03-24     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  584-92     Citation Subset:  IM; S    
Affiliation:
John B. Pierce Laboratory, Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut 06519, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Body Water / physiology
Body Weight / physiology
Exercise / physiology*
Female
Humans
Liver / metabolism
Male
Osmolar Concentration
Phenylalanine
Rest
Serum Albumin / biosynthesis*
Time Factors
Grant Support
ID/Acronym/Agency:
HL-20634/HL/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/Serum Albumin; 63-91-2/Phenylalanine

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


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