Multiple effects of opiates on intracellular calcium level and on calcium uptake in three neuronal cell lines

Multiple effects of opiates on intracellular calcium level and on calcium uptake in three neuronal cell lines
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阿片类药物对三种神经元细胞系细胞内钙水平和钙摄取的多重影响

DOI:
10.1016/0006-8993(95)00475-6
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发表时间:
1995
期刊:
影响因子:
2.9
通讯作者:
Y. Sarne
Y. Sarne
中科院分区:
医学3区
文献类型:
--
作者:
A. Fields;M. Gafni;Y. Oron;Y. Sarne

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本研究采用Fura-2显像和~(45)Ca ~(2+)摄取技术,在三种神经细胞系中检测阿片类药物对细胞内钙水平和钙内流的调节作用。我们发现,阿片类药物(10−7−10− 5 M吗啡和10−9−10− 7 M埃托啡)对KCl诱导的SK-N-SH、NG 108 -15和NMB细胞系细胞内钙水平升高既有抑制作用,也有兴奋作用。此外,阿片类药物提高基础(非氯化钾刺激)在所有三个细胞培养的细胞内钙水平。45 Ca 2+的摄取增加阿片类药物在SK-N-SH细胞,这种刺激作用是不会被百日咳毒素阻断。在NMB细胞中,阿片类药物对基础钙的额外抑制作用发生:阿片类药物降低细胞内钙水平(通过Fura-2测定),并减少钙内流(通过45 Ca 2+摄取测定)。阿片类调节钙的异质性不能归因于阿片类药物的类型,既不是它的浓度,也不是实验条件,因为在同一文化中的相邻细胞的反应不同。
The present study examines the modulation by opiates of intracellular calcium levels and calcium entry, using fura-2 imaging and45Ca2+uptake, in three neuronal cell lines. We show that opiates (10−7−10−5M morphine and 10−9−10−7M etorphine) exert both inhibitory and excitatory effects on KCl-induced elevation in intracellular calcium level in SK-N-SH, NG108-15 and NMB cell lines. In addition, opiates elevate basal (non KCl-stimulated) intracellular calcium level in all three cell cultures.45Ca2+uptake is augmented by opiates in SK-N-SH cells and this stimulatory effect is not blocked by pertussis toxin. In NMB cells, an additional inhibitory effect of opiates on basal calcium takes place: opiates reduce intracellular calcium level as measured by fura-2, and decrease calcium influx as detected by45Ca2+uptake. The heterogeneity in the opioid regulation of calcium could not be attributed to the type of opioid drug, neither to its concentration nor to the experimental conditions, since neighboring cells within the same culture responded differently.
DOI: --
发表时间: 1986-01
期刊: The Journal of biological chemistry
影响因子: --
作者:
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发表时间: 1992
期刊: Brain research
影响因子: 2.9
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