Statin Treatment Is Associated with Alterations in the Platelet Lipidome

Abstract

Background Platelets are key players in the pathophysiology of coronary artery disease (CAD) and platelet hyperreactivity leads to increased risk of developing adverse cardiovascular events. Further, significant changes in the platelet lipidome occur in patients with acute coronary syndrome (ACS) and critically regulated lipids lead to platelet hyperresponsiveness. Statin treatment is crucial in the treatment and prevention of patients with CAD by remodeling lipid metabolism.

Objective In this study, we investigate the platelet lipidome of CAD patients by untargeted lipidomics, highlighting significant changes between statin-treated and naïve patients.

Methods We characterized the platelet lipidome in a CAD cohort (n = 105) by an untargeted lipidomics approach using liquid chromatography coupled to mass spectrometry.

Results Among the annotated lipids, 41 lipids were significantly upregulated in statin-treated patients, whereas 6 lipids were downregulated compared to naïve patients. The most prominent upregulated lipids in statin-treated patients belong to the class of triglycerides, cholesteryl esters, palmitic acid, and oxidized phospholipids, whereas mainly glycerophospholipids were downregulated compared to untreated patients. A more pronounced effect of statin treatment on the platelet lipidome was observed in ACS patients. We further highlight a dose-dependent influence on the platelet lipidome.

Conclusion Our results reveal that the platelet lipidome is altered in CAD patients with statin treatment and upregulated lipids embody mainly characteristic triglycerides, whereas downregulated lipids mostly compromise glycerophospholipids, which may play a role in the pathophysiology of CAD. Results of this study may contribute to the understanding of statin treatment softening the lipid phenotype.

Keywords

platelets - lipidome - statins - coronary artery disease

• References

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