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Updated: Mar 7, 2026

Isolation and Analysis of Plasma Lipoproteins by Ultracentrifugation
Published on: January 28, 2021
Lipoprotein(a) and inhibitors of proprotein convertase subtilisin/kexin type 9
Kazuhiko Kotani1, Maciej Banach2
1Division of Community and Family Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan.
Insights
New PCSK9 inhibitors effectively lower lipoprotein(a) [Lp(a)] levels, a cardiovascular disease risk factor. The exact mechanism for this reduction remains under investigation, prompting further research into PCSK9 inhibitor utility.
Area of Science:
- Cardiovascular Medicine
- Biochemistry
- Pharmacology
Background:
- Lipoprotein(a) [Lp(a)] is a significant risk factor for cardiovascular disease.
- Elevated Lp(a) is observed in familial hypercholesterolemia and high LDL cholesterol.
- Limited effective therapies exist for modulating Lp(a) levels.
Purpose of the Study:
- To describe the effects of PCSK9 inhibitors on Lp(a) levels.
- To explore potential mechanisms underlying PCSK9 inhibitor-mediated Lp(a) reduction.
- To discuss future perspectives on this therapeutic approach.
Main Methods:
- Review of existing literature on PCSK9 inhibitors and Lp(a).
- Analysis of clinical data demonstrating Lp(a) reduction with PCSK9 inhibitors.
- Discussion of proposed biological pathways involved.
Main Results:
- Monoclonal antibody-based PCSK9 inhibitors significantly reduce both LDL cholesterol and Lp(a) levels.
- Observed reduction in Lp(a) by PCSK9 inhibitors has garnered significant research interest.
- The precise mechanism by which PCSK9 inhibition lowers Lp(a) is not yet fully elucidated.
Conclusions:
- PCSK9 inhibitors represent a promising therapeutic strategy for managing elevated Lp(a).
- Further research is crucial to elucidate the exact mechanism of Lp(a) reduction.
- Understanding these mechanisms could lead to optimized cardiovascular disease prevention strategies.
Abstract:
Lipoprotein(a) [Lp(a)] has been identified as a risk factor for cardiovascular disease. Lp(a) levels are also high under certain clinical conditions, including familial hypercholesterolemia and high blood low-density lipoprotein (LDL) cholesterol levels. Few effective generic therapies for modulating Lp(a) have been developed. However, new therapies involving inhibitors of proprotein convertase subtilisin/kexin type 9 (PCSK9) using monoclonal antibodies have markedly reduced the blood LDL levels-and the Lp(a) levels as well. Much attention has therefore been focused on this therapy and its utility. The mechanism by which PCSK9 inhibitors reduce the Lp(a) levels remains unclear. We here describe the effects of PCSK9 inhibitors on Lp(a) and discuss potential mechanisms and perspectives of this topic.
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