Aspirin-Dependent Platelet Inflammatory Inhibition in Healthy Subjects Decreases NLRP-1 Inflammasome

Ann Vasc Surg . 2019 Aug;59:244-247. doi: 10.1016/j.avsg.2019.02.008. Epub 2019 Apr 19.

Fecha de la publicación: 19/04/2019

Autor: Joaquin De Haro (1), Silvia Bleda (2), Ilsem Veronica Laime (1), Blanca Carballido (1), Jhenifer Uyaguari (1), Francisco Acin (1)



1Angiology and Vascular Surgery Department, Hospital Universitario de Getafe, Madrid, Spain.

2Angiology and Vascular Surgery Department, Hospital Universitario de Getafe, Madrid, Spain. Electronic address:


Background: Inflammation and endothelial dysfunction are implicated in the onset of atherosclerosis. Inflammasome activation takes part in the pathogenesis of the atherosclerotic disease. This study investigated the influence of platelet inflammatory inhibition on the transcription of intracitosolic nucleotide-binding oligomerization domain-like receptor protein 1 (NLRP-1) inflammasome in endothelial cells.

Methods: This experimental study enrolled 10 healthy volunteers with no cardiovascular risk factors and normal results on vascular examination. They received low doses of aspirin (100 mg/day) for seven days. A venous blood sample was collected in all subjects before aspirin intake and after the experimental week. Human aortic endothelial cell (HAEC) cultures were exposed to baseline plasma and plasma from subjects after aspirin intake. NLRP-1 gene expression was analyzed in these cultures.

Results: HAEC cultures that were exposed to plasma from subjects at baseline showed higher expression of NLRP-1 than HAECs exposed to plasma of healthy volunteers after one week on salicilate intake (relative quantification, 1.077 ± 0.05 vs. 1.002 ± 0.06; odds ratio, 1.8; 95 confidence interval, 1.1-2.9; P < 0.01).

Conclusions: Data observed in the our study indicate that in HAECs, the intracytosolic NLRP-1 expression is attenuated by the auto/paracrine platelet inhibition by aspirin, without direct platelet-endothelial cell interaction.