An independent haemostatic mechanism: shear induced platelet aggregation.

An independent haemostatic mechanism: shear induced platelet aggregation.
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独立的止血机制:剪切诱导血小板聚集。

DOI:
10.1007/978-1-4615-3806-6_30
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发表时间:
1990
影响因子:
--
通讯作者:
G. Salmon
G. Salmon
中科院分区:
医学4区
文献类型:
--
作者:
J. O'brien;G. Salmon

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我们已经发表了 (1) 证据表明,单独对血小板施加高剪切力会暴露并激活血小板表面糖蛋白 IIb/IIIa (GPIIb/IIIa) 上的独特结构域。在血管性血友病因子 (vWf) 和二价阳离子存在的情况下,血小板会聚集。本文回顾了有关高剪切效应的大量文献。它描述了一种装置,其中通过迫使肝素化的全血通过复杂的过滤器而产生高剪切力,通常会导致血小板活化;血小板聚集,然后堵塞过滤器。该系统受到 GPIIb/IIIa 和 vWf 抗体的抑制:纤维蛋白原显然不参与其中。 GPIIb/IIIa 和 vWf 的相同抗体可预防动物模型体内发生高剪切诱导的血栓形成。过滤器堵塞不受阿司匹林、肝素和噻氯匹定的影响,因此涉及与人体内临床血栓形成预防中涉及的阿司匹林敏感机制不同的机制。虽然在这项全球测试中存在许多无法解释的现象,但该过滤模型是研究最近认识的途径的一种简单方法,该途径几乎肯定与人类血栓形成有关。
We have published (1) evidence indicating that high shearing forces alone applied to platelets expose and activate a unique domain on glycoprotein IIb/IIIa (GPIIb/IIIa) at the platelet surface. In the presence of von Willebrand's factor (vWf) and divalent cations the platelets will aggregate. This paper reviews the extensive literature on high shear effects. It describes a device in which high shear produced by forcing heparinised whole blood through a complex filter normally results in platelet activation; the platelets aggregate and then block the filter. This system is inhibited by antibodies to GPIIb/IIIa and to vWf: fibrinogen is apparently not involved. The same antibodies to GPIIb/IIIa and vWf prevent high shear induced thrombosis occurring in vivo in animal models. The filter blockage is not influenced by aspirin, heparin and ticlopidine and so involves a different mechanism from the aspirin sensitive mechanisms involved in clinical thrombosis prevention in vivo in man. While there are a number of unexplained phenomena in this global test nevertheless this filter model is a simple way of studying a recently recognised pathway which is almost certainly involved in thrombogenesis in man.
DOI: 10.1073/pnas.82.23.8057
发表时间: 1985-01-01
影响因子: 11.1
作者:
PLOW, EF;PIERSCHBACHER, MD;GINSBERG, MH
通讯作者: GINSBERG, MH
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DOI: --
发表时间: 1986
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影响因子: 20.3
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发表时间: 1989
期刊: The Journal of clinical investigation
影响因子: --
作者:
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DOI: --
发表时间: 1988
期刊: Blood
影响因子: 20.3
作者:
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通讯作者: Mannucci,PM
高剪切速率下糖蛋白 IIb-IIIa 复合物介导的不依赖纤维蛋白原的血小板粘附和内皮下血栓形成。
DOI: 10.1172/jci113871
发表时间: 1989
期刊: The Journal of clinical investigation
影响因子: --
作者:
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通讯作者: Hoffmann,T