Low ectonucleotidase activity and increased neutrophil-platelet aggregates in patients with antiphospholipid syndrome

Blood. 2024 Mar 21;143(12):1193-1197. doi: 10.1182/blood.2023022097.

Abstract

Many patients with antiphospholipid syndrome had decreased ectonucleotidase activity on neutrophils and platelets, which enabled extracellular nucleotides to trigger neutrophil-platelet aggregates. This phenotype was replicated by treating healthy neutrophils and platelets with patient-derived antiphospholipid antibodies or ectonucleotidase inhibitors.

MeSH terms

  • Antibodies, Antiphospholipid
  • Antiphospholipid Syndrome*
  • Blood Platelets
  • Humans
  • Neutrophils

Substances

  • Antibodies, Antiphospholipid