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Enzymatic lipid oxidation by eosinophils propagates coagulation, hemostasis, and thrombotic disease

2017; Rockefeller University Press; Volume: 214; Issue: 7 Linguagem: Inglês

10.1084/jem.20161070

1540-9538

Stefan Uderhardt, Jochen A. Ackermann, Tobias Fillep, Victoria J. Hammond, Johann Willeit, Peter Santer, Manuel Mayr, Markus Biburger, Meike Miller, Katie R. Zellner, Konstantin Stark, Alexander Zarbock, Jan Rossaint, Irene Schubert, Dirk Mielenz, Barbara Dietel, Dorette Raaz‐Schrauder, Cihan Ay, Thomas Gremmel, J. Thaler, Christian Heim, Martin Herrmann, Peter W. Collins, Gernot Schabbauer, Nigel Mackman, David Voehringer, Jerry L. Nadler, James J. Lee, Steffen Maßberg, Manfred Rauh, Stefan Kiechl, Georg Schett, Valerie B. O’Donnell, Gerhard Krönke,

Mosquito-borne diseases and control

Blood coagulation is essential for physiological hemostasis but simultaneously contributes to thrombotic disease. However, molecular and cellular events controlling initiation and propagation of coagulation are still incompletely understood. In this study, we demonstrate an unexpected role of eosinophils during plasmatic coagulation, hemostasis, and thrombosis. Using a large-scale epidemiological approach, we identified eosinophil cationic protein as an independent and predictive risk factor for thrombotic events in humans. Concurrent experiments showed that eosinophils contributed to intravascular thrombosis by exhibiting a strong endogenous thrombin-generation capacity that relied on the enzymatic generation and active provision of a procoagulant phospholipid surface enriched in 12/15-lipoxygenase-derived hydroxyeicosatetraenoic acid-phosphatidylethanolamines. Our findings reveal a previously unrecognized role of eosinophils and enzymatic lipid oxidation as regulatory elements that facilitate both hemostasis and thrombosis in response to vascular injury, thus identifying promising new targets for the treatment of thrombotic disease.