Cited by 170Lipid metabolism and disordersDiabetes, Cardiovascular Risks, and LipoproteinsLipoproteins and Cardiovascular Health

Rate of production of plasma and very-low-density lipoprotein (VLDL) apolipoprotein C-III is strongly related to the concentration and level of production of VLDL triglyceride in male subjects with different body weights and levels of insulin sensitivity.

Cohn, Jeffrey S., Patterson, Bruce W., Uffelman, Kris D., Davignon, Jean, Steiner, George·2004·The Journal of Clinical Endocrinology & Metabolism

Abstract

Overweight individuals with reduced insulin sensitivity often have mild to moderate hypertriglyceridemia. To investigate the role of apolipoprotein (apo)C-III metabolism in the etiology of hypertriglyceridemia in these individuals, we investigated 10 male subjects with different body weights (body mass index, 24-34 kg/m(2)) and insulin sensitivity (homeostasis model assessment, 4.7-35.0). Total plasma and very-low-density lipoprotein (VLDL) apoC-III kinetics, as well as VLDL triglyceride (TG) and VLDL apoB kinetics, were measured with iv injected stable isotopes. The apoC-III, TG, and apoB levels in VLDL ranged from 2.9-18.2 mg/dl, 0.49-2.89 mmol/liter, and 6.7-29.3 mg/dl, respectively. Mean production rates (PRs) were: VLDL apoC-III, 20.2 +/- 4.1 micromol/d (range, 8.0-44.8); VLDL TG, 26.9 +/- 4.6 mmol/d (range, 10.2-51.1); and VLDL apoB, 4.4 +/- 0.8 micromol/d (range, 1.5-9.1). VLDL apoC-III PRs were significantly correlated with body mass index, homeostasis model assessment, and plasma TG (r = 0.66, P < 0.05; r = 0.80, P < 0.01; r = 0.95, P < 0.001, respectively). Similar correlations were found for plasma apoC-III PRs (r = 0.70, P < 0.05; r = 0.67, P < 0.05; r = 0.80, P < 0.01, respectively). Fractional catabolic rates (FCRs) were not significantly related to metabolic variables. VLDL TG levels were strongly related to VLDL apoC-III levels (r = 0.99, P < 0.001) and VLDL apoC-III PRs (r = 0.94, P < 0.001). VLDL apoC-III levels were more strongly correlated with VLDL TG PRs (r = 0.81, P < 0.01) than with VLDL TG FCRs or VLDL apoB FCRs (r = -0.53, P = 0.12; r = -0.37, P = 0.29). These results suggest that increased hepatic production of VLDL apoC-III is characteristic of subjects with higher body weights and lower levels of insulin sensitivity and is strongly related to the plasma concentration and level of production of VLDL TG.

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Crossref · 10.1210/jc.2003-032056

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  • The increase in triglyceride production may be due to excess free fatty acids returning to the liver, particularly in visceral obesity and insulin resistance, and increased de novo triglyceride production due to hyperinsulinemia.

    “The increase in triglyceride production may be due to excess free fatty acids returning to the liver, particularly in the setting of visceral obesity and insulin resistance, and increased de novo triglyceride production due to hyperinsulinemia (24,62,63).”
  • Defective clearance of triglyceride-rich VLDL by LpL can contribute to moderate hypertriglyceridemia, and many patients have overproduction of VLDL triglyceride in the liver with increased secretion.

    “Defective clearance of triglyceride-rich VLDL by LpL can contribute to this condition, and many patients have overproduction of VLDL triglyceride in the liver with an increased secretion (24,62,63).”

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Authors
Cohn, J. S., Patterson, B. W., Uffelman, K. D., Davignon, J., & Steiner, G.
Affiliations
  • Montreal Clinical Research Institute (CA)
  • Washington University in St. Louis (US)
  • Toronto General Hospital (CA)
Corresponding author
Cohn, Jeffrey S.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2004-08
Volume
89
Issue
8
Pages
3949-3955
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W1994130325
Cited by
170
References
58
Citations by year
2026: 4 · 2025: 3 · 2024: 5 · 2023: 3 · 2022: 2 · 2021: 5 · 2020: 12 · 2019: 10 · 2018: 5 · 2017: 7 · 2016: 9 · 2015: 10 · 2014: 8 · 2013: 15 · 2012: 9
FWCI
5.01
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
Keywords
apolipoprotein C-III, VLDL triglycerides, hypertriglyceridemia, insulin sensitivity, overweight, body mass index, fractional catabolic rate
MeSH terms
Adult, Apolipoproteins C, Body Weight, Humans, Insulin, Insulin Resistance, Kinetics, Lipoproteins, VLDL, Male, Middle Aged, Osmolar Concentration, Triglycerides, Apolipoprotein C-III

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