4.0 Article

Mechanisms of thrombosis in pancreatic ductal adenocarcinoma

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ELSEVIER SCI LTD
DOI: 10.1016/j.beha.2022.101346

Keywords

Cancer -associated thrombosis; Hypercoagulability; Venous thrombosis; Tissue factor; Extracellular vesicles

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This review summarizes the epidemiology and pathogenesis of thrombotic complications in patients with pancreatic cancer, and introduces novel mechanisms of hypercoagulability such as neutrophil extracellular traps and extracellular vesicles. The article also discusses the important role of these mechanisms in platelet and coagulation activation.
Patients with pancreatic cancer have a very high risk of both venous and arterial thrombosis compared with other cancers, caused by a tumour-driven hypercoagulable state. Better under-standing of pancreatic cancer-associated prothrombotic and proinflammatory mechanisms opens the door to controlling prothrombotic states, ideally, without affecting the overall haemostasis. This narrative review brings together currently available evidence on epidemiology and patho-genesis of thrombotic complications in pancreatic adenocarcinoma. We describe risk factors for thrombosis and established and novel mechanisms of hypercoagulability. Among novel pathways of hypercoagulability, the release of neutrophils extracellular traps (NETs) by activated neutro-phils and the crucial role of extracellular vesicles (EV) in participating in platelet and coagulation activation were described. We also reported recent evidence on EV role in thrombin generation amplification through the activation of the intrinsic pathway, discussing potential molecules implicated in this process.

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