Document Detail

Meal frequency influences circulating hormone levels but not lipogenesis rates in humans.
MedLine Citation:
PMID:  7869919     Owner:  NLM     Status:  MEDLINE    
To determine whether human lipogenesis is influenced by the frequency of meal consumption, 12 subjects were divided into two groups and fed isocaloric nutritionally adequate liquid diets over 3 days, either as three larger diurnal (n = 6) or as six small, evenly spaced (n = 6) meals per day. On day 2 (08:00 h) of each diet period, 0.7 g deuterium (D) oxide/kg body water was administered and blood was collected every 4 hours over 48 hours for measurement of plasma insulin and glucose-dependent insulinotropic polypeptide (GIP) levels. At each time point, the incorporation of D into plasma triglyceride fatty acid (TG-FA) was also determined by isotope ratio mass spectrometry after TG-FA extraction and combustion/reduction. Insulin and GIP levels were elevated over daytime periods in subjects fed three versus six meals per day. Contribution of de novo synthesis to total TG-FA production was not significantly different for days 2 and 3 in subjects consuming three (6.56% +/- 1.32% and 6.64% +/- 2.08%, respectively) and six (7.67% +/- 2.29% and 7.88% +/- 1.46%, respectively) meals per day. Net TG-FA synthesis rates over days 2 and 3 were 1.47 +/- 0.33 and 1.55 +/- 0.53 g/d, respectively, for subjects fed three meals per day, and 1.64 +/- 0.47 and 1.69 +/- 0.30 g/d for subjects fed six meals per day. These findings suggest that consuming fewer but larger daily meals is not accompanied by increases in TG-FA synthesis, despite the observation of hormonal peaks.
P J Jones; G L Namchuk; R A Pederson
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Metabolism: clinical and experimental     Volume:  44     ISSN:  0026-0495     ISO Abbreviation:  Metab. Clin. Exp.     Publication Date:  1995 Feb 
Date Detail:
Created Date:  1995-03-28     Completed Date:  1995-03-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375267     Medline TA:  Metabolism     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  218-23     Citation Subset:  IM    
Division of Human Nutrition, University of British Columbia, Vancouver, Canada.
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MeSH Terms
Deuterium Oxide
Energy Intake
Gastric Inhibitory Polypeptide / blood*
Insulin / blood*
Triglycerides / blood*
Reg. No./Substance:
0/Triglycerides; 11061-68-0/Insulin; 59392-49-3/Gastric Inhibitory Polypeptide; 7789-20-0/Deuterium Oxide

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

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