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Updated: Aug 31, 2026

Isolation and Analysis of Plasma Lipoproteins by Ultracentrifugation
Published on: January 28, 2021
Triacylglycerol-rich lipoproteins and atherosclerosis--where is the link?
1Institut für Arterioskleroseforschung, Domagkstrasse 3, D-48149 Muenster, Germany. cullen@uni-muenster.de
Insights
Raised triacylglycerol-rich lipoproteins (TRLs) may be as atherogenic as LDL cholesterol. This review examines epidemiological data, arterial wall pathology, and the benefits of lowering TRLs to prevent atherosclerosis.
Area of Science:
- Cardiovascular Science
- Lipid Metabolism
- Atherosclerosis Research
Background:
- The link between high LDL cholesterol and atherosclerosis is well-established.
- The role of triacylglycerol-rich lipoproteins (TRLs) in atherosclerosis is less clear but increasingly recognized.
- Emerging evidence suggests TRLs can be as atherogenic as LDL.
Purpose of the Study:
- To review the epidemiological evidence linking elevated TRL levels to atherosclerosis.
- To explore the pathophysiological mechanisms by which TRLs contribute to atherogenesis.
- To evaluate the rationale for targeting TRLs for atherosclerosis prevention.
Main Methods:
- Review of epidemiological studies, focusing on the PROCAM study.
- Analysis of pathophysiological data concerning TRLs and the arterial wall.
- Synthesis of evidence supporting therapeutic TRL reduction.
Main Results:
- Epidemiological data, including PROCAM study results, indicate a significant association between raised TRL levels and atherosclerosis.
- TRLs may contribute to atherogenesis through various mechanisms within the arterial wall.
- Substantial evidence supports the atherogenic potential of TRLs, comparable to LDL.
Conclusions:
- Raised TRL levels are strongly linked to atherosclerosis.
- TRLs play a significant role in the development of atherosclerosis.
- Targeting TRL reduction is a potential strategy for preventing atherosclerosis.
Abstract:
The link between raised levels of LDL (low-density lipoprotein) cholesterol in the blood and atherosclerosis is incontrovertible. The situation with regard to TRLs (triacylglycerol-rich lipoproteins) is not as clear. Nevertheless, there is substantial evidence that TRLs may in some cases be just as atherogenic as triacylglycerol-poor LDL. This review focuses on three aspects of the link between TRLs and atherosclerosis: (i) the epidemiological evidence for an association between raised levels of TRLs and atherosclerosis, with particular reference to the results of the PROCAM study; (ii) the possible pathophysiological contribution of TRL to atherogenesis at the level of the arterial wall; and (iii) the case for specific lowering of triacylglycerol levels to prevent atherosclerosis.
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