Coordination of hormone-induced calcium signals in isolated rat hepatocyte couplets: demonstration with confocal microscopy.

Coordination of hormone-induced calcium signals in isolated rat hepatocyte couplets: demonstration with confocal microscopy.
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离体大鼠肝细胞对中激素诱导的钙信号的协调:共聚焦显微镜演示。

DOI:
10.1091/mbc.3.1.113
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发表时间:
1992
影响因子:
3.3
通讯作者:
Burgstahler,AD
Burgstahler,AD
中科院分区:
生物学3区
文献类型:
--
作者:
Nathanson,MH;Burgstahler,AD

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可兴奋细胞通常表现出对葡萄糖诱导的细胞内钙信号的快速协调。开始于单个上皮细胞的钙离子升高也可能扩散到相邻细胞,但上皮细胞间钙离子诱导信号的协调尚未得到描述。我们报告使用共聚焦显微镜,以确定在离体大鼠肝细胞偶联,一个孤立的上皮细胞系统,其中功能极性保持胞内和胞内分布的胞质钙。加压素和苯肾上腺素诱发连续协调钙信号的对联,即使在胞质钙振荡。通过用辛醇处理关闭细胞间间隙连接通道来消除偶联。这些观察结果表明,肝细胞之间的协调,并建议间隙连接通道介导的组织反应性的细胞间整合的细胞内钙信号。
Excitable cells often display rapid coordination of hormone-induced intracellular calcium signals. Calcium elevations that begin in a single epithelial cell also may spread to adjacent cells, but coordination of hormone-induced signals among epithelial cells has not been described. We report the use of confocal microscopy to determine the inter- and intracellular distribution of cytosolic calcium in isolated rat hepatocyte couplets, an isolated epithelial cell system in which functional polarity is maintained. Both vasopressin and phenylephrine evoked sequential coordinated calcium signals in the couplets, even during cytosolic calcium oscillations. The coupling was abolished by closure of intercellular gap junction channels by treatment with octanol. These observations demonstrate that hormone-induced intracellular calcium signals are coordinated among hepatocytes and suggest that gap junction channels mediate this intercellular integration of tissue responsiveness.
肝细胞中的钙通道。
DOI: 10.1016/s0168-8278(88)80492-6
发表时间: 1988
影响因子: 25.7
作者:
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DOI: 10.1016/s0021-9258(18)83166-0
发表时间: 1989-05
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发表时间: 1989-08
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影响因子: --
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心脏间隙连接通道的结构-活动关系。
DOI: 10.1152/ajpcell.1990.258.2.c195
发表时间: 1990
期刊: The American journal of physiology
影响因子: --
作者:
Spray,DC;Burt,JM
通讯作者: Burt,JM