Phosphatidylinositol 4,5-bisphosphate may represent the site of release of plasma membrane-bound calcium upon stimulation of human platelets.

Phosphatidylinositol 4,5-bisphosphate may represent the site of release of plasma membrane-bound calcium upon stimulation of human platelets.
复制标题

磷脂酰肌醇 4,5-二磷酸可能代表刺激人血小板后质膜结合钙的释放位点。

DOI:
10.1016/0006-291x(84)91437-2
复制
发表时间:
1984
影响因子:
3.1
通讯作者:
Broekman,MJ
Broekman,MJ
中科院分区:
生物学4区
文献类型:
--
作者:
Broekman,MJ

文献摘要

参考文献

被引文献

相似文献

人血小板的凝血酶刺激引起内源性磷脂酰肌醇4,5-二磷酸(PI-P2)的广泛(高达4,5%)和快速(5-10 s)下降。凝血酶启动了同样迅速的损失膜结合钙,所示的减少荧光金霉素(CTC)加载血小板。在使用其他血小板刺激物时,PI-P2分解也与CTC荧光降低相关:花生四烯酸导致PI-P2和CTC荧光中度和缓慢降低,而离子载体仅诱导最小的变化。凝血酶诱导的PI-P2含量的降低可以解释释放足够的膜结合Ca,使胞浆游离[Ca 2 +]升高至1-2 μ M,支持PI-P2代表参与受体-配体相互作用引起的刺激依赖性胞浆Ca 2+增加的Ca结合位点的假设。
Thrombin stimulation of human blood platelets caused an extensive (up to 45 %) and rapid (5–10 s) decline in endogenous phosphatidylinositol 4,5-bisphosphate (PI-P2). Thrombin initiated an equally rapid loss of membrane-bound Ca, as indicated by the decrease in fluorescence of chlortetracycline (CTC)-loaded platelets. PI-P2breakdown also correlated with decreased CTC fluorescence upon use of other platelet stimuli: Arachidonate caused moderate and slow decreases in both PI-P2and CTC fluorescence, while ionophore only induced minimal changes. Thrombin-induced decreases in PI-P2content could account for release of sufficient membrane-bound Ca to raise cytoplasmic free [Ca2+] to 1–2 uM, supporting the hypothesis that PI-P2represents the Ca-binding site involved in the stimulus-dependent increase in cytoplasmic Ca2+evoked by receptor-ligand interactions.
红细胞增多症大鼠的大脑、心脏和骨骼肌的血管供应增加。
DOI: 10.1152/ajplegacy.1970.219.3.702
发表时间: 1970
期刊: The American journal of physiology
影响因子: --
作者:
A. T. Miller;D. M. Hale
通讯作者: D. M. Hale
由单克隆抗体定义的鹌鹑造血细胞和内皮细胞谱系的表面标记。
影响因子: 11.1
作者:
B. Péault;J. Thiery;N. L. Le Douarin
通讯作者: N. L. Le Douarin
DOI: 10.1002/ar.1090030903
发表时间: 1909-09-01
期刊: ANATOMICAL RECORD
影响因子: --
作者:
Evans, HM
通讯作者: Evans, HM
DOI: 10.1073/pnas.83.7.2114
发表时间: 1986-04-01
影响因子: 11.1
作者:
DAVIES, PF;REMUZZI, A;GIMBRONE, MA
通讯作者: GIMBRONE, MA
哺乳动物视网膜血管增殖活性的证明。
DOI: 10.1083/jcb.84.2.298
发表时间: 1980-02
影响因子: 7.8
作者:
Glaser, B M;D'Amore, P A;Michels, R G;Patz, A;Fenselau, A
通讯作者: Fenselau, A