Endothelial cell activation enhances thromboinflammation in vaccine-induced immune thrombotic thrombocytopenia.

ABSTRACT:

Abstract

Vaccine-induced immune thrombotic thrombocytopenia (VITT) is a rare but serious complication of the ChAdOx1 nCOV-19 vaccine. In Australia, the diagnosis of VITT required the detection of antibodies against platelet factor 4 (PF4) in plasma using a PF4/polyanion enzyme-linked immunosorbent assay (ELISA). Half of the patients who fulfilled the clinical criteria for VITT tested positive when using this ELISA and another third tested positive when using platelet activation assays, highlighting limitations in the assays used for VITT. Using a microfluidic device coated with endothelial cells, the Endo-chip, we measured the effects of serum and immunoglobulin G (IgG) from patients with clinical VITT on endothelial thromboinflammation. Our cohort comprised 40 patients (21 ELISA-p

SUBMITTER: Dupuy A 

PROVIDER: S-EPMC12181003 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature