Identification in vitro of an endothelial cell surface cofactor for antithrombin III. Parallel studies with isolated perfused rat hearts and microcarrier cultures of bovine endothelium.

Identification in vitro of an endothelial cell surface cofactor for antithrombin III. Parallel studies with isolated perfused rat hearts and microcarrier cultures of bovine endothelium.
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抗凝血酶 III 内皮细胞表面辅助因子的体外鉴定。

DOI:
10.1172/jci110502
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发表时间:
1982
期刊:
The Journal of clinical investigation
影响因子:
--
通讯作者:
Owen,WG
Owen,WG
中科院分区:
--
文献类型:
--
作者:
Busch,C;Owen,WG

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两个体外系统用于鉴定抗凝血酶III辅因子对血管内皮的活性。Langendorff大鼠心脏制剂或微载体珠培养的内皮细胞填充柱灌注纯化的凝血酶和抗凝血酶III的混合物。对于每种制剂,抗凝血酶III对凝血酶的加速抑制发生在通过内皮的过程中。血小板因子4、硫酸鱼精蛋白和二异丙基磷酰凝血酶(肝素的抗凝血酶III辅因子活性的所有拮抗剂)显著降低了制剂抑制凝血酶的能力。由此得出结论,具有抗凝血酶III固定相辅因子功能特性的物质存在于微血管内皮上,并在那里催化循环游离凝血酶的失活。图片
Two in vitro systems were used to identify an antithrombin III cofactor activity on vascular endothelium. Langendorff rat heart preparations or columns packed with endothelium cultured on microcarrier beads were perfused with mixtures of purified thrombin and antithrombin III. With each preparation, accelerated inhibition of thrombin by antithrombin III occurred during passage over endothelium. Platelet factor 4, protamine sulfate and diisopropylphosphoryl thrombin, all antagonists of the antithrombin III cofactor activity of heparin, significantly reduced the capacity of the preparation to inhibit thrombin. It is concluded that a substance with the functional properties of a stationary phase cofactor for antithrombin III is present on the microvascular endothelium and there catalyzes the inactivation of circulating free thrombin.Images
DOI: --
发表时间: 1951
期刊: The Lancet
影响因子: --
作者:
S. van CREVOLD;M. Paulssen
通讯作者: M. Paulssen
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