Physiological Bases for the Superiority of Apolipoprotein B Over Low‐Density Lipoprotein Cholesterol and Non–High‐Density Lipoprotein Cholesterol as a Marker of Cardiovascular Risk

Tamara Glavinovic1, George Thanassoulis2, Jacqueline de Graaf3, Patrick Couture4, Robert A. Hegele5, Allan D. Sniderman6
1Division of Nephrology, Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada
2George Thanassoulis https://orcid.org/0000-0002-9930-7189 , Mike and Valeria Centre for Cardiovascular Prevention, Department of Medicine, , McGill University Health Centre, , Montreal, , Quebec, , Canada,
3Jacqueline de Graaf , University of Nijmegen Radboud University Medical Center, , Department of General Internal Medicine, , Nijmegen, , the Netherlands,
4Université Laval Centre Hospitalier Universitaire de Québec Quebec Canada
5Robert A. Hegele https://orcid.org/0000-0003-2861-5325 , Robarts Research Institute and Department of Medicine, Schulich School of Medicine and Dentistry, , Western University, , London, , Ontario, , Canada,
6Allan D. Sniderman https://orcid.org/0000-0002-3540-3956 , Mike and Valeria Centre for Cardiovascular Prevention, Department of Medicine, , McGill University Health Centre, , Montreal, , Quebec, , Canada,

Tóm tắt

In 2019, the European Society of Cardiology/European Atherosclerosis Society stated that apolipoprotein B (apoB) was a more accurate marker of cardiovascular risk than low‐density lipoprotein cholesterol (LDL‐C) and non–high‐density lipoprotein cholesterol. Since then, the evidence has continued to mount in favor of apoB. This review explicates the physiological mechanisms responsible for the superiority of apoB as a marker of the cardiovascular risk attributable to the atherogenic apoB lipoprotein particles chylomicron remnants, very low‐density lipoprotein, and low‐density lipoprotein particles. First, the nature and relative numbers of these different apoB particles will be outlined. This will make clear why low‐density lipoprotein particles are almost always the major determinants of cardiovascular risk and why the concentrations of triglycerides and LDL‐C may obscure this relation. Next, the mechanisms that govern the number of very low‐density lipoprotein and low‐density lipoprotein particles will be outlined because, except for dysbetalipoproteinemia, the total number of apoB particles determines cardiovascular risk, Then, the mechanisms that govern the cholesterol mass within very low‐density lipoprotein and low‐density lipoprotein particles will be reviewed because these are responsible for the discordance between the mass of cholesterol within apoB particles, measured either as LDL‐C or non–high‐density lipoprotein cholesterol, and the number of apoB particles measured as apoB, which creates the superior predictive power of apoB over LDL‐C and non–high‐density lipoprotein cholesterol. Finally, the major apoB dyslipoproteinemias will be briefly outlined. Our objective is to provide a physiological framework for health care givers to understand why apoB is a more accurate marker of cardiovascular risk than LDL‐C or non–high‐density lipoprotein cholesterol.

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