Characterization of the interactions of N-acetyl-aspartyl-glutamate with [3H]L-glutamate receptors.

Characterization of the interactions of N-acetyl-aspartyl-glutamate with [3H]L-glutamate receptors.
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N-乙酰基-天冬氨酰-谷氨酸与[3H]L-谷氨酸受体相互作用的表征。

DOI:
10.1016/0014-2999(84)90590-9
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发表时间:
1984
影响因子:
5
通讯作者:
Coyle,JT
Coyle,JT
中科院分区:
医学2区
文献类型:
--
作者:
Koller,KJ;Coyle,JT

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[3H] l-谷氨酸的特异性结合及其被脑内源性肽n -乙酰-天冬氨酸谷氨酸取代,已经在中枢神经系统的九个区域进行了研究。n -乙酰-天冬氨酸-谷氨酸仅引起[3H] l-谷氨酸特异性结合的部分移位,最大抑制的区域分布不均匀,从丘脑的61%到大脑皮层和海马的40%不等。n -乙酰-天冬氨酸-谷氨酸对特异性结合[3H] l-谷氨酸的最大位移不受含氯缓冲液中添加钙的显著影响;然而,在没有氯或钙的情况下,n -乙酰-天冬氨酸-谷氨酸没有明显取代[3H] l-谷氨酸。在所有被检测的肽类似物中,n -乙酰-天冬氨酸-谷氨酸对[3H] l-谷氨酸标记的氯依赖位点的亲和力最高。这些结果提示n -乙酰-天冬氨酸-谷氨酸可能在哺乳动物中枢神经系统中发挥内源性兴奋肽的作用,并提出了富含酸性氨基酸的内源性脑肽是否可能作为兴奋递质的问题。
The specific binding of [3H]L-glutamate and its displacement by N-acetyl-aspartyl glutamate, a peptide endogenous to brain, has been examined in nine regions of the central nervous system. N-acetyl-aspartyl-glutamate caused only a partial displacement of [3H]L-glutamate specific binding with an uneven regional distribution of maximal inhibition, ranging from 61% in the thalamus to 40% in the cerebral cortex and the hippocampus. The maximal displacement of specifically bound [3H]L-glutamate by N-acetyl-aspartyl-glutamate was not significantly affected by calcium added to chloride containing buffer; however, in the absence of chloride or calcium, no significant displacement of [3H]L-glutamate by N-acetyl-aspartyl-glutamate was observed. N-Acetyl-aspartyl-glutamate displayed the highest affinity for the chloride-dependent sites labeled by [3H]L-glutamate among all peptide analogues examined. These results suggest that N-acetyl-aspartyl-glutamate may play a role as an endogenous excitatory peptide in the mammalian central nervous system and raise the question whether endogenous brain peptides enriched in acidic amino acids may serve as excitatory transmitters.
DOI: 10.1016/0304-3940(81)90335-9
发表时间: 1981
影响因子: 2.5
作者:
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N-乙酰天冬氨酸和一些 N-乙酰天冬氨酰肽的离子交换液相色谱法
DOI: 10.1080/01483918108059980
发表时间: 1981
影响因子: 1.3
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兴奋性氨基酸类似物:神经毒性和癫痫发作
DOI: --
发表时间: 1982
期刊: Neuropharmacology
影响因子: 4.7
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DOI: --
发表时间: 1978
影响因子: 4.7
作者:
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N-乙酰天冬氨酰谷氨酸:一种与大脑“谷氨酸”受体具有高亲和力的内源性肽。
DOI: 10.1073/pnas.80.4.1116
发表时间: 1983
影响因子: 11.1
作者:
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通讯作者: Joseph T. Coyle