Cited by 109Lipid metabolism and disordersFatty Acid Research and HealthLipid metabolism and biosynthesis

Dynamics of fat absorption and effect of sham feeding on postprandial lipema

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Chavez–Jauregui, Rosa N., Mattes, Richard D., Parks, Elizabeth J.·2010·Gastroenterology

Abstract

Background & aims Given the importance of postprandial hyperlipidemia to increase risk for atherosclerosis, in the present study, stable isotope-labeled meals were fed to healthy subjects (7 males and 3 females) to investigate the kinetics chylomicron synthesis and the effect of sensory exposure to lipid on metabolism.Methods Subjects performed two, 24-hour inpatient studies that entailed consumption of a liquid formula evening meal containing 30 g of oil (+ (13)C(2) triolein) on day 1. Breakfast (day 2) consisted of triacylglycerols (TAGs) fed as capsules (30 g oil + (13)C(7) triolein) to avoid activation of mouth taste receptors. Next, modified sham feeding of cream cheese occurred over 2 hours. In the 2 trials, the stimulus was either higher fat (HF) or lower fat (LF) cream cheese. A liquid meal was consumed at lunch. Blood sampling occurred intermittently, and chylomicron particles S(f) >400 TAGs were analyzed by gas chromatography-mass spectrometry.Results (13)C(2)-Label was found in fasting-state lipoproteins, and persons with higher body fat percentages showed greater dilution of meal TAGs from endogenous sources. For both trials, 13% ± 4% of lipoprotein TAGs oleic acid was derived from the previous evening meal. Incremental area under the curve for TAGs during HF was ∼2.5 times higher than after LF exposure (46 ± 15 vs 17 ± 5 μmol/L/h; P = .04). The greater HF morning lipemia occurred with elevated glucose, insulin, and nonesterified fatty acids peak after lunch.Conclusions These data support a connection between enteral lipid metabolism and oral fat exposure, resulting in elevated postprandial lipemia. The results suggest that the intestine may participate in a mechanism coordinating oral fat signaling with control of subsequent macronutrient disposal in the body.

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Crossref · 10.1053/j.gastro.2010.05.002

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  • Tracer studies showed that dietary lipids remain in the circulation for up to 18 h after a high-fat meal but not after a low-fat meal.

    “Tracer studies showed that dietary lipids remain in the circulation for up to 18 h after a high-fat meal but not after a low-fat meal,50”

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Authors
Chavez–Jauregui, R. N., Mattes, R. D., & Parks, E. J.
Affiliations
  • Purdue University West Lafayette (US)
  • The University of Texas Southwestern Medical Center (US)
Corresponding author
Parks, Elizabeth J.
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2010-11
Volume
139
Issue
5
Pages
1538-1548
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2051747725
Cited by
109
References
59
Citations by year
2026: 5 · 2025: 5 · 2024: 4 · 2023: 3 · 2022: 12 · 2021: 8 · 2020: 7 · 2019: 9 · 2018: 9 · 2017: 3 · 2016: 13 · 2015: 5 · 2014: 9 · 2013: 3 · 2012: 8
FWCI
3.73
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Diabetes Association
  • National Institute of Diabetes and Digestive and Kidney Diseases (PL1DK081183, R01DK079913, R01DK063185, 5R01 DK04520414)
  • National Institute of Dental and Craniofacial Research (UL1DE019584)
  • National Center for Research Resources (M01RR000633, UL1RR024982, M01 RR00633)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
postprandial lipemia, fat absorption, sham feeding, triolein, stable isotope tracers, body fat percentage, free fatty acids
MeSH terms
Adipose Tissue, Adult, Dietary Fats, Female, Follow-Up Studies, Humans, Hyperlipidemias, Intestinal Absorption, Lipids, Male, Gas Chromatography-Mass Spectrometry, Prognosis, Risk Factors, Postprandial Period, Enterocytes, Atherosclerosis

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