Ethanol stimulates shape change in human platelets by activation of phosphoinositide-specific phospholipase C.
Ethanol stimulates shape change in human platelets by activation of phosphoinositide-specific phospholipase C.
复制标题
乙醇通过激活磷酸肌醇特异性磷脂酶 C 来刺激人血小板的形状变化。
DOI:
10.1016/0003-9861(88)90472-9
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发表时间:
1988
影响因子:
3.9
通讯作者:
Hoek,JB
中科院分区:
文献类型:
--
作者:
Rubin,R;Ponnappa,BC;Thomas,AP;Hoek,JB
Administration of ethanol to human platelets resulted in a rapid shape change which was maximal within 30 s. Ethanol did not cause aggregation or secretion of ATP at any time and inhibited aggregation induced by collagen. In platelets that were loaded with the intracellular calcium indicator fura2, ethanol induced a rapid mobilization of calcium from internal, thrombin-sensitive pools. Cytosolic calcium increased to a maximum within 5 s and decreased slowly over the ensuing 5 min to near basal levels. The mobilization of calcium by ethanol coincided with the rapid formation of phosphatidic acid and a decrease in the level of phosphatidylinositol 4,5-bisphosphate, as measured in32P-labeled platelets. In platelets labeled withmyo-[2-3H]inositol, ethanol caused a 20–30% increase in the levels of inositol (1,4,5)-trisphosphate and inositol bisphosphate within 10 s. Ethanol also induced the transient phosphorylation of myosin light chain (20 kDa) and a 40 kDa protein, a known substrate for protein kinase C. The results indicate that ethanol activates phosphoinositide-specific phospholipase C in human platelets. The subsequent mobilization of intracellular calcium and activation of protein kinase C can account for the shape change induced by ethanol.
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DOI:
10.1042/bj2220103
发表时间:
1984
期刊:
The Biochemical journal
影响因子:
--
作者:
S. Rittenhouse
通讯作者:
S. Rittenhouse
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
J. Hoek;R. Rubin;A. Thomas
通讯作者:
A. Thomas
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:
1985
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
作者:
L. Vicentini;F. Di Virgilio;A. Ambrosini;T. Pozzan;J. Meldolesi
通讯作者:
J. Meldolesi
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
T. Rink;T. Hallam
通讯作者:
T. Hallam