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Selective mobilisation of fatty acids from human adipose tissue.
MedLine Citation:
PMID:  11297913     Owner:  NLM     Status:  Publisher    
Background: Adipose tissue is a storage organ for dietary fat. During fasting, fatty acids are released into serum as free fatty acids (FFA). Experimental studies indicate that fatty acids are selectively mobilised from adipose tissue into serum. The aim of this study was to investigate whether the composition of the serum FFA fraction reflects selective mobilisation in the fasting state in humans. Methods: The fatty acid composition of fasting serum FFA and adipose tissue were analysed from 112 patients with myocardial infarction and 107 healthy control subjects using gas-liquid chromatography. The subjects' habitual diet was analysed using a food-frequency questionnaire. Results: Significant correlations were found between serum FFA and adipose tissue, particularly for the percentage content of linoleic acid (r=0.73), eicosapentaenoic acid (r=0.68), alpha-linolenic acid (r=0.67) and palmitoleic acid (r=0.60). Percentage contents of palmitic, stearic, linoleic, alpha-linolenic, eicosapentaenoic and docosahexaenoic acid were higher in serum FFA than in adipose tissue, whereas oleic and palmitoleic acid were relatively more abundant in adipose tissue. This may indicate that the former group of fatty acids is preferentially mobilised from adipose tissue into serum. High correlations for polyunsaturated fatty acids were observed between percentage contents of dietary and adipose tissue fatty acids. The correlation of fatty acids between diet and serum FFA was weak, but a tendency towards higher correlations for polyunsaturated fatty acids was observed. Conclusions: Our findings are compatible with the hypothesis that, in the fasting state, fatty acids are selectively mobilised from adipose tissue into serum FFA.
P Yli-Jama; T S. Haugen; H M. Rebnord; J Ringstad; J I. Pedersen
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Publication Detail:
Journal Detail:
Title:  European journal of internal medicine     Volume:  12     ISSN:  1879-0828     ISO Abbreviation:  Eur. J. Intern. Med.     Publication Date:  2001 Apr 
Date Detail:
Created Date:  2001-Apr-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9003220     Medline TA:  Eur J Intern Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  107-115     Citation Subset:  -    
Institute for Nutrition Research, Medical Faculty, University of Oslo, P.O. Box 1046 Blindern, 0316, Oslo, Norway
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