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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.
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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“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).”
From Evaluation and Treatment of Hypertriglyceridemia: An Endocrine Society Clinical Practice Guideline (2012) · cites this paper as [63]
In the citing paper
“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).”
From Evaluation and Treatment of Hypertriglyceridemia: An Endocrine Society Clinical Practice Guideline (2012) · cites this paper as [63]
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Evaluation and Treatment of Hypertriglyceridemia: An Endocrine Society Clinical Practice Guideline
Berglund, L., Brunzell, J. D., Goldberg, A. C., Goldberg, I. J., Sacks, F., Murad, M. H., & Stalenhoef, A. F. H. (2012) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2011-3213 · Cited by 887
“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).”
Regulation of Plasma Triglycerides in Insulin Resistance and Diabetes
Ginsberg, H. N., Zhang, Y.-L., & Hernandez-Ono, A. (2005) · Archives of Medical Research · doi:10.1016/j.arcmed.2005.01.005 · Cited by 531
Fruchart, J.-C., Sacks, F., Hermans, M. P., Assmann, G., Brown, W. V., Ceska, R., Chapman, M. J., Dodson, P. M., Fioretto, P., Ginsberg, H. N., et al. (2008) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2008.10.002 · Cited by 463
Increased very low density lipoprotein (VLDL) secretion, hepatic steatosis, and insulin resistance
Choi, S. H., & Ginsberg, H. N. (2011) · Trends in Endocrinology & Metabolism · doi:10.1016/j.tem.2011.04.007 · Cited by 418
Fat Depots, Free Fatty Acids, and Dyslipidemia
Ebbert, J. O., & Jensen, M. D. (2013) · Nutrients · doi:10.3390/nu5020498 · Cited by 355
Metadata
- 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
- Publisher
- The Endocrine Society
- 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 › Cardiology and Cardiovascular Medicine › 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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