Cited by 339Lipid metabolism and disordersCholesterol and Lipid MetabolismLipoproteins and Cardiovascular Health

Mechanism of plasma cholesteryl ester transfer in hypertriglyceridemia.

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Mann, C J, Yen, F T, Grant, A M, Bihain, B E·1991·Journal of Clinical Investigation

Abstract

Plasma net cholesteryl ester (CE) transfer and optimum cho- lesteryl ester transfer protein (CETP) activity were determined in primary hypertriglyceridemic (a = 11) and normolipidemic (a = 15) individuals.The hypertriglyceridemic group demon- strated threefold greater net CE transfer leading to enhanced accumulation of CE in VLDL.This increased net transfer was not accompanied by a change in CETP activity.In normolipide- mia, but not in hypertriglyceridemia, net CE transfer correlated with VLDL triglyceride (r = 0.92, P < 0.001).In contrast, net CE transfer in hypertriglyceridemia, but not in normolipide- mia, correlated with CETP activity (r = 0.73, P < 0.01).Correc- tion of hypertriglyceridemia with bezafibrate reduced net CE transfer towards normal and restored the correlation with VLDL triglyceride (r = 0.90, P < 0.005) while suppressing the correlation with CETP activity.That net CE transfer depends on VLDL concentration was confirmed by an increase ofnet CE transfer in normolipidemic plasma supplemented with purified VLDL.Supplementation of purified CETP to normolipidemic plasma did not stimulate net CE transfer.In contrast, net CE transfer was enhanced by addition of CETP to both plasma supplemented with VLDL and hypertriglyceridemic plasma.Thus, in normal subjects, VLDL concentration determines the rate of net CE transfer.CETP becomes rate limiting as VLDL concentration increases, i.e, in hypertriglyceridemia. (J.Clin.Invest.1991.88:2059-2066.)Key words: cholesteryl ester transfer protein * very low density lipoprotein -high density lipoprotein -cardiovascular disease * reverse cholesterol trans- port MO.Bezafibrate (2-[4-[2-[(4-chlorobenzoyl)amino]-ethyl]phenoxy]-2methylpropanoic acid) was obtained from Boehringer Mannheim (for- merly MCP Pharmaceuticals), Livingstone, Scotland. Cholesteryl Ester Transfer in Hypertriglyceridemia 2059

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  • Hepatic lipase and cholesterol ester transfer protein contribute to remodeling of LDL and HDL particles, and which has the predominant effect depends on the triglyceride content of VLDL.

    “Hepatic lipase and cholesterol ester transfer protein contribute to the remodeling processes; whether hepatic lipase or cholesterol ester transfer protein has the predominant effect on the size and density of LDL and HDL particles depends on the triglyceride content of very low-density lipoproteins (VLDL) (27,28).”

    From Evaluation and Treatment of Hypertriglyceridemia: An Endocrine Society Clinical Practice Guideline (2012) · cites this paper as [27]

    The Discussion reports that CETP-mediated cholesteryl ester transfer changes with VLDL concentration and may help explain differences in HDL cholesteryl ester concentration. It does not compare CETP with hepatic lipase or establish that VLDL triglyceride content determines which has the predominant effect on LDL and HDL particle size and density. (LLM, conf=0.87)

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Authors
Mann, C. J., Yen, F. T., Grant, A. M., & Bihain, B. E.
Affiliations
Louisiana State University (US)
Venue
Journal of Clinical Investigation
Published
1991-12-01
Volume
88
Issue
6
Pages
2059-2066
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2114689977
Cited by
339
References
30
Citations by year
2024: 5 · 2023: 3 · 2022: 5 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 2 · 2014: 10 · 2013: 1 · 2012: 2
FWCI
17.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p01hl025596-15)
  • National Heart, Lung, and Blood Institute (HL255-96)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
Keywords
cholesteryl ester transfer, cholesteryl ester transfer protein, hypertriglyceridemia, VLDL, VLDL triglycerides, reverse cholesterol transport, CETP activity, bezafibrate, lipoprotein metabolism, rate-determining step
MeSH terms
Adult, Bezafibrate, Biological Transport, Carrier Proteins, Cholesterol Esters, Glycoproteins, Humans, Lipoproteins, HDL, Lipoproteins, LDL, Lipoproteins, VLDL, Triglycerides, Hypertriglyceridemia, Cholesterol Ester Transfer Proteins

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