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在人类血小板中,不依赖钙离子的分泌依赖于细胞质中的三磷酸腺苷(ATP)。

Ca2+-independent secretion is dependent on cytoplasmic ATP in human platelets.

作者信息

Sanchez A

出版信息

FEBS Lett. 1985 Oct 28;191(2):283-6. doi: 10.1016/0014-5793(85)80025-9.

DOI:10.1016/0014-5793(85)80025-9
PMID:4054312
Abstract

The secretion evoked in human platelets by physiological agonists is an energy-requiring process that depends on the metabolic ATP pool. Diacylglycerol, phorbol ester and collagen evoke a secretory response, which is not associated with an increase of cell Ca2+ levels, and is attributed to activation of protein kinase C [(1983) Nature 305, 317-319]. The secretion evoked by these agonists decreased along with cytoplasmic ATP depletion in the same way that the thrombin-induced secretion did. The secretory response was restored by raising again the cytoplasmic ATP levels. These results support the idea that the secretory response takes place by the physiological ATP-dependent mechanisms rather than by membrane perturbations in these instances.

摘要

生理激动剂在人血小板中引发的分泌是一个需要能量的过程,该过程依赖于代谢ATP池。二酰基甘油、佛波酯和胶原蛋白引发分泌反应,此反应与细胞Ca2+水平的升高无关,并且归因于蛋白激酶C的激活[(1983年)《自然》305卷,317 - 319页]。这些激动剂引发的分泌与凝血酶诱导的分泌一样,随着细胞质ATP的消耗而减少。通过再次提高细胞质ATP水平,分泌反应得以恢复。这些结果支持了这样一种观点,即在这些情况下,分泌反应是通过生理上依赖ATP的机制发生的,而不是通过膜扰动发生的。

相似文献

1
Ca2+-independent secretion is dependent on cytoplasmic ATP in human platelets.在人类血小板中,不依赖钙离子的分泌依赖于细胞质中的三磷酸腺苷(ATP)。
FEBS Lett. 1985 Oct 28;191(2):283-6. doi: 10.1016/0014-5793(85)80025-9.
2
Effects of prostaglandin I2 and forskolin on the secretion from platelets evoked at basal concentrations of cytoplasmic free calcium by thrombin, collagen, phorbol ester and exogenous diacylglycerol.前列腺素I2和福斯高林对凝血酶、胶原蛋白、佛波酯和外源性二酰基甘油在细胞质游离钙基础浓度下诱发的血小板分泌的影响。
Biochem J. 1984 Sep 15;222(3):833-6. doi: 10.1042/bj2220833.
3
Diacylglycerol and phorbol ester stimulate secretion without raising cytoplasmic free calcium in human platelets.二酰基甘油和佛波酯可刺激人血小板分泌,而不升高细胞质游离钙。
Nature. 1983;305(5932):317-9. doi: 10.1038/305317a0.
4
Differential effects of the diacylglycerol kinase inhibitor R59022 on thrombin versus collagen-induced human platelet secretion.二酰基甘油激酶抑制剂R59022对凝血酶与胶原诱导的人血小板分泌的不同作用。
Biochim Biophys Acta. 1988 Apr 2;969(1):9-17. doi: 10.1016/0167-4889(88)90082-1.
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Energy requirements for stimulus-response coupling.刺激-反应偶联的能量需求。
Adv Exp Med Biol. 1985;192:215-33. doi: 10.1007/978-1-4615-9442-0_16.
6
Response of aequorin-loaded platelets to activators of protein kinase C.水母发光蛋白负载的血小板对蛋白激酶C激活剂的反应。
Am J Physiol. 1989 Jan;256(1 Pt 1):C35-43. doi: 10.1152/ajpcell.1989.256.1.C35.
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Platelet aggregation induced by alpha 2-adrenoceptor and protein kinase C activation. A novel synergism.α2肾上腺素能受体和蛋白激酶C激活诱导的血小板聚集。一种新的协同作用。
Biochem J. 1989 Oct 15;263(2):377-85. doi: 10.1042/bj2630377.
8
Effects of the calmodulin antagonists fendiline and calmidazolium on aggregation, secretion of ATP, and internal calcium in washed human platelets.
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9
Ethanol inhibits thrombin-induced secretion by human platelets at a site distinct from phospholipase C or protein kinase C.乙醇在一个不同于磷脂酶C或蛋白激酶C的位点抑制凝血酶诱导的人血小板分泌。
Biochem J. 1990 Jul 15;269(2):489-97. doi: 10.1042/bj2690489.
10
Trifluoperazine and chlorpromazine block secretion from human platelets evoked at basal cytoplasmic free calcium by activators of C-kinase.三氟拉嗪和氯丙嗪可阻断蛋白激酶C激活剂在基础细胞质游离钙水平下诱发的人血小板分泌。
FEBS Lett. 1983 Nov 28;164(1):43-6. doi: 10.1016/0014-5793(83)80015-5.

引用本文的文献

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Cell proliferation depends on mitochondrial Ca2+ uptake: inhibition by salicylate.细胞增殖依赖于线粒体对钙离子的摄取:水杨酸盐的抑制作用。
J Physiol. 2006 Feb 15;571(Pt 1):57-73. doi: 10.1113/jphysiol.2005.100586. Epub 2005 Dec 8.
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ATP keeps exocytosis sites in a primed state but is not required for membrane fusion: an analysis with Paramecium cells in vivo and in vitro.ATP使胞吐位点处于启动状态,但膜融合并不需要ATP:对草履虫细胞进行的体内和体外分析
J Cell Biol. 1986 Oct;103(4):1279-88. doi: 10.1083/jcb.103.4.1279.
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Arachidonic acid-induced calcium influx in human platelets. Comparison with the effect of thrombin.
花生四烯酸诱导人血小板中的钙内流。与凝血酶作用的比较。
Biochem J. 1990 Dec 1;272(2):435-43. doi: 10.1042/bj2720435.