Low Levels of High-Density Lipoprotein Cholesterol Are Linked to Impaired Clopidogrel-Mediated Platelet Inhibition

Angiology. 2018 Oct;69(9):786-794. doi: 10.1177/0003319718760074. Epub 2018 Feb 26.

Abstract

Low high-density lipoprotein cholesterol (HDL-C) levels are an independent predictor of ischemic events in patients with atherosclerotic cardiovascular disease. This may in part be due to decreased clopidogrel-mediated platelet inhibition in patients with low HDL-C. We investigated the association of HDL-C with on-treatment platelet reactivity to adenosine diphosphate (ADP) in 314 patients on dual antiplatelet therapy with clopidogrel and aspirin undergoing angioplasty and stenting. Platelet P-selectin expression was assessed by flow cytometry, and platelet aggregation was determined by the VerifyNow P2Y12 assay and the Impact-R. High-density lipoprotein cholesterol levels were inversely associated with P-selectin expression and the VerifyNow P2Y12 assay (both P ≤ .01). Moreover, we found a positive correlation of HDL-C with surface coverage by the Impact-R ( P = .003). Patients with low HDL-C (≤35 mg/dL) exhibited a significantly higher P-selectin expression in response to ADP and higher platelet aggregation by the VerifyNow P2Y12 assay and the Impact-R than patients with normal HDL-C (>35 mg/dL; all P < .05). High on-treatment residual platelet reactivity by the VerifyNow P2Y12 assay occurred significantly more frequently in patients with low HDL-C levels than in those with normal HDL-C (47.4% vs 30.1%, P = .01). In conclusion, low HDL-C is linked to impaired clopidogrel-mediated platelet inhibition after angioplasty and stenting.

Keywords: angioplasty; clopidogrel; dual antiplatelet therapy; high on-treatment residual platelet reactivity; high-density lipoprotein cholesterol; stenting.

MeSH terms

  • Adenosine Diphosphate
  • Aged
  • Angioplasty
  • Aspirin / therapeutic use
  • Atherosclerosis / blood*
  • Atherosclerosis / therapy*
  • Cholesterol, HDL / blood*
  • Clopidogrel / therapeutic use*
  • Drug Therapy, Combination
  • Female
  • Humans
  • Male
  • Middle Aged
  • Platelet Aggregation / drug effects*
  • Platelet Aggregation Inhibitors / therapeutic use*
  • Stents

Substances

  • Cholesterol, HDL
  • Platelet Aggregation Inhibitors
  • Adenosine Diphosphate
  • Clopidogrel
  • Aspirin