Ir-CPI, a coagulation contact phase inhibitor from the tick Ixodes ricinus, inhibits thrombus formation without impairing hemostasis.
Ir-CPI, a coagulation contact phase inhibitor from the tick Ixodes ricinus, inhibits thrombus formation without impairing hemostasis.
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Ir-CPI 是一种来自蓖麻蜱的凝血接触相抑制剂,可抑制血栓形成而不损害止血。
DOI:
10.1084/jem.20091007
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发表时间:
2009-10-26
期刊:
影响因子:
--
通讯作者:
Godfroid E
中科院分区:
文献类型:
--
作者:
Decrem Y;Rath G;Blasioli V;Cauchie P;Robert S;Beaufays J;Frère JM;Feron O;Dogné JM;Dessy C;Vanhamme L;Godfroid E
Blood coagulation starts immediately after damage to the vascular endothelium. This system is essential for minimizing blood loss from an injured blood vessel but also contributes to vascular thrombosis. Although it has long been thought that the intrinsic coagulation pathway is not important for clotting in vivo, recent data obtained with genetically altered mice indicate that contact phase proteins seem to be essential for thrombus formation. We show that recombinant Ixodes ricinus contact phase inhibitor (Ir-CPI), a Kunitz-type protein expressed by the salivary glands of the tick Ixodes ricinus, specifically interacts with activated human contact phase factors (FXIIa, FXIa, and kallikrein) and prolongs the activated partial thromboplastin time (aPTT) in vitro. The effects of Ir-CPI were also examined in vivo using both venous and arterial thrombosis models. Intravenous administration of Ir-CPI in rats and mice caused a dose-dependent reduction in venous thrombus formation and revealed a defect in the formation of arterial occlusive thrombi. Moreover, mice injected with Ir-CPI are protected against collagen- and epinephrine-induced thromboembolism. Remarkably, the effective antithrombotic dose of Ir-CPI did not promote bleeding or impair blood coagulation parameters. To conclude, our results show that a contact phase inhibitor is an effective and safe antithrombotic agent in vivo.
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DOI:
10.1084/jem.20052458
发表时间:
2006-03-20
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Kleinschnitz C;Stoll G;Bendszus M;Schuh K;Pauer HU;Burfeind P;Renné C;Gailani D;Nieswandt B;Renné T
通讯作者:
Renné T
影响因子:
2.9
作者:
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通讯作者:
DAVIE, EW
影响因子:
56.9
作者:
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通讯作者:
BROZE, GJ
DOI:
10.1111/j.1600-0463.2008.01148.x
发表时间:
2008-07
期刊:
APMIS : acta pathologica, microbiologica, et immunologica Scandinavica
影响因子:
--
作者:
Fukumura D;Jain RK
通讯作者:
Jain RK
影响因子:
15.9
作者:
COLMAN, RW
通讯作者:
COLMAN, RW