Document Detail


Conjugated linoleic acid supplementation in humans: effects on fatty acid and glycerol kinetics.
MedLine Citation:
PMID:  11592726     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Recent studies with mouse adipocytes have shown that dietary conjugated linoleic acid (CLA) may reduce body fat by increasing lipolysis. The present study examined the effect of CLA supplementation on fatty acid and glycerol kinetics in six healthy, adult women who were participating in a controlled metabolic ward study. These women were fed six CLA capsules per day (3.9 g/d) for 64 d following a baseline period of 30 d. The subjects were confined to a metabolic suite for the entire 94-d study, where diet and activity were controlled and held constant. The rate of appearance (Ra) of glycerol, which indicates lipolytic rates, was similar at baseline and after 4 wk of CLA supplementation at rest (1.87 +/- 0.21 and 2.00 +/- 0.39 micromol/kg/min, respectively) and during exercise (7.12 +/- 0.74 and 6.40 +/- 0.99 micromol/kg/min, respectively). Likewise, the Ra of free fatty acids (FFA) was not significantly different after 4 wk of dietary CLA at rest (2.72 +/- 0.06 and 2.74 +/- 0.12 micromol/kg/min, respectively) or during exercise (6.99 +/- 0.40 and 5.88 +/- 0.29 micromol/kg/min, respectively). CLA supplementation also had no effect on the percentage of FFA released from lipolysis that were re-esterified. The apparent rate of FFA re-esterification was 65.2 +/- 4.2% at rest and 32.1 +/- 3.44% during exercise. Four weeks of CLA supplementation had no significant effect on fatty acid or glycerol metabolism in healthy, weight-stable, adult women.
Authors:
K L Zambell; W F Horn; N L Keim
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Lipids     Volume:  36     ISSN:  0024-4201     ISO Abbreviation:  Lipids     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-10-10     Completed Date:  2002-03-21     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0060450     Medline TA:  Lipids     Country:  United States    
Other Details:
Languages:  eng     Pagination:  767-72     Citation Subset:  IM    
Affiliation:
USDA/Western Human Nutrition Research Center, Department of Exercise Science, University of California, Davis 95616, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Dietary Supplements
Exercise
Fatty Acids / blood*
Female
Glycerol / blood*
Humans
Kinetics
Linoleic Acid / pharmacology*
Triglycerides / blood
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Triglycerides; 2197-37-7/Linoleic Acid; 56-81-5/Glycerol

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


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