Determination of platelet adhesion to collagen and the associated formation of phosphatidic acid and calcium mobilization.

Determination of platelet adhesion to collagen and the associated formation of phosphatidic acid and calcium mobilization.
复制标题

测定血小板与胶原蛋白的粘附以及相关的磷脂酸形成和钙动员。

DOI:
10.1016/0003-2697(90)90437-e
复制
发表时间:
1990
影响因子:
2.9
通讯作者:
Dangelmaier,C
Dangelmaier,C
中科院分区:
生物学4区
文献类型:
--
作者:
Smith,JB;Dangelmaier,C

文献摘要

参考文献

被引文献

相似文献

开发了一种方法来研究血小板在 37°C 下无聚集情况下与纤维状胶原的粘附。人血小板用 [3H]-油酸标记,凝胶过滤,并在血栓素 A2 受体拮抗剂、5-羟色胺和血小板活化因子以及纤维蛋白原/纤连蛋白抑制剂和 ADP 去除系统存在下与胶原一起孵育。通过 10 μm 尼龙网过滤,将粘附胶原的血小板与未粘附胶原的血小板分开,并通过测定网保留的放射性来定量血小板粘附的程度。血小板粘附的程度与添加至100μg/ml的胶原蛋白的量成正比,并在1分钟内基本完成。至少 80-90% 的血小板能够粘附胶原蛋白。细胞外 Mg2+ 的存在增强了粘附力,而细胞外 Ca2+ 则抑制了这种增强作用。粘附在胶原蛋白上的血小板中的磷脂酸显着增加,这与胞质游离 Ca2+ 水平的增加有关,可以使用荧光 Ca2+ 指示剂 fura-2 检测到胞质游离 Ca2+ 水平的增加。
A method was developed to study the adhesion of platelets to fibrillar collagen at 37°C in the absence of aggregation. Human platelets were labeled with [3H]-oleic acid, gel-filtered, and incubated with collagen in the presence of receptor antagonists to thromboxane A2, 5-hydroxytryptamine, and platelet-activating factor, as well as a fibrinogen/fibronectin inhibitor and an ADP-removing system. Those platelets that adhered to collagen were separated from those that did not by filtration through a 10-μm nylon mesh and the extent of platelet adhesion was quantitated by determination of the radioactivity retained by the mesh. The extent of platelet adhesion was proportional to the amount of collagen added up to 100 μg/ml and was essentially complete by 1 min. At least 80–90% of the platelets were capable of adhering to collagen. Adhesion was potentiated by the presence of extracellular Mg2+and this potentiation was inhibited by extracellular Ca2+. Phosphatidic acid increased markedly in those platelets that adhered to collagen and this was associated with increases in cytosolic free Ca2+levels that could be detected using the fluorescent Ca2+indicator fura-2.
DOI: --
发表时间: 1985-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
G. Grynkiewicz;M. Poenie;Roger Y. TsienB
通讯作者: G. Grynkiewicz;M. Poenie;Roger Y. TsienB
DOI: --
发表时间: 1983
影响因子: 4.8
作者:
Kimihiko Sane;Y. Takai;J. Yamanishi;Y. Nishizuka
通讯作者: Y. Nishizuka
通过支持成纤维细胞粘附的蛋白水解片段和合成肽抑制纤连蛋白与血小板的结合。
DOI: --
发表时间: 1985
期刊: The Journal of biological chemistry
影响因子: --
作者:
Ginsberg,M;Pierschbacher,MD;Ruoslahti,E;Marguerie,G;Plow,E
通讯作者: Plow,E
响应凝血酶,从人血小板的磷脂中选择性释放阿奇多糖酸。
DOI: --
发表时间: 1977
影响因子: 15.9
作者:
T. Bills;J. Smith;M. Silver
通讯作者: M. Silver
离子霉素和胶原蛋白刺激的装载 fura-2 的人血小板中 [3H] 花生四烯酸的释放和胞质游离钙的变化。
DOI: 10.1042/bj2350869
发表时间: 1986
期刊: The Biochemical journal
影响因子: --
作者:
W. K. Pollock;T. Rink;R. Irvine
通讯作者: R. Irvine