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2017 ; 214
(7
): 2121-2138
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Enzymatic lipid oxidation by eosinophils propagates coagulation, hemostasis, and
thrombotic disease
#MMPMID28566277
Uderhardt S
; Ackermann JA
; Fillep T
; Hammond VJ
; Willeit J
; Santer P
; Mayr M
; Biburger M
; Miller M
; Zellner KR
; Stark K
; Zarbock A
; Rossaint J
; Schubert I
; Mielenz D
; Dietel B
; Raaz-Schrauder D
; Ay C
; Gremmel T
; Thaler J
; Heim C
; Herrmann M
; Collins PW
; Schabbauer G
; Mackman N
; Voehringer D
; Nadler JL
; Lee JJ
; Massberg S
; Rauh M
; Kiechl S
; Schett G
; O'Donnell VB
; Krönke G
J Exp Med
2017[Jul]; 214
(7
): 2121-2138
PMID28566277
show ga
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.