Activation of coagulation FXI promotes endothelial inflammation and amplifies platelet activation in a nonhuman primate model of hyperlipidemia.
atherosclerosis
hyperlipidemia
inflammation
platelets
thrombin
Journal
Research and practice in thrombosis and haemostasis
ISSN: 2475-0379
Titre abrégé: Res Pract Thromb Haemost
Pays: United States
ID NLM: 101703775
Informations de publication
Date de publication:
Jan 2024
Jan 2024
Historique:
received:
16
03
2023
revised:
16
09
2023
accepted:
19
09
2023
medline:
16
1
2024
pubmed:
16
1
2024
entrez:
16
1
2024
Statut:
epublish
Résumé
Hyperlipidemia is associated with chronic inflammation and thromboinflammation. This is an underlying cause of several cardiovascular diseases, including atherosclerosis. In diseased blood vessels, rampant thrombin generation results in the initiation of the coagulation cascade, activation of platelets, and endothelial cell dysfunction. Coagulation factor (F) XI represents a promising therapeutic target to reduce thromboinflammation, as it is uniquely positioned at an intersection between inflammation and thrombin generation. This study aimed to investigate the role of FXI in promoting platelet and endothelial cell activation in a model of hyperlipidemia. Nonhuman primates (NHPs) were fed a standard chow diet (lean, Obese NHPs demonstrated increased sensitivity for platelet P-selectin expression and phosphatidylserine exposure in response to platelet GPVI or PAR agonists compared with lean NHPs. Obese NHPs exhibited elevated levels of C-reactive protein, cathepsin D, and myeloperoxidase compared with lean NHPs. Following pharmacological inhibition of FIX activation by FXIa, platelet priming for activation by GPVI or PAR agonists, C-reactive protein levels, and endothelial VCAM-1 levels were reduced in obese NHPs. FXI activation promotes the proinflammatory phenotype of hyperlipidemia by priming platelet activation and inciting endothelial cell dysfunction.
Sections du résumé
Background
UNASSIGNED
Hyperlipidemia is associated with chronic inflammation and thromboinflammation. This is an underlying cause of several cardiovascular diseases, including atherosclerosis. In diseased blood vessels, rampant thrombin generation results in the initiation of the coagulation cascade, activation of platelets, and endothelial cell dysfunction. Coagulation factor (F) XI represents a promising therapeutic target to reduce thromboinflammation, as it is uniquely positioned at an intersection between inflammation and thrombin generation.
Objectives
UNASSIGNED
This study aimed to investigate the role of FXI in promoting platelet and endothelial cell activation in a model of hyperlipidemia.
Methods
UNASSIGNED
Nonhuman primates (NHPs) were fed a standard chow diet (lean,
Results
UNASSIGNED
Obese NHPs demonstrated increased sensitivity for platelet P-selectin expression and phosphatidylserine exposure in response to platelet GPVI or PAR agonists compared with lean NHPs. Obese NHPs exhibited elevated levels of C-reactive protein, cathepsin D, and myeloperoxidase compared with lean NHPs. Following pharmacological inhibition of FIX activation by FXIa, platelet priming for activation by GPVI or PAR agonists, C-reactive protein levels, and endothelial VCAM-1 levels were reduced in obese NHPs.
Conclusion
UNASSIGNED
FXI activation promotes the proinflammatory phenotype of hyperlipidemia by priming platelet activation and inciting endothelial cell dysfunction.
Identifiants
pubmed: 38226339
doi: 10.1016/j.rpth.2023.102276
pii: S2475-0379(23)05704-7
pmc: PMC10788631
doi:
Types de publication
Journal Article
Langues
eng
Pagination
102276Informations de copyright
© 2023 The Authors.