Abstract:
:The effect of synthetic spider toxin analogs containing aza-crown in combination with zinc and copper was studied on the lobster neuromuscular synapse. The suppressive action of N4-type spider toxin analog (N4) on excitatory postsynaptic potentials (EPSPs) was markedly enhanced in the presence of 10(-5)-10(-4) M Zn2+. Cu2+ (10(-4) M) also had a potentiating effect on the suppression of EPSPs by N4 but to a lesser degree than Zn2+. While N6-type spider toxin analog (N6) suppressed EPSPs more effectively than N4, additional suppression was not pronounced in the presence of Zn2+ or Cu2+. The results suggest that chelatable divalent metal ions play an important role in the blocking mechanism of glutamate receptor by the spider toxin.
journal_name
Neurosci Resjournal_title
Neuroscience researchauthors
Kawai N,Miwa A,Hashimoto Y,Shudo K,Asami T,Nakajima Tdoi
10.1016/0168-0102(89)90028-xsubject
Has Abstractpub_date
1989-04-01 00:00:00pages
358-62issue
4eissn
0168-0102issn
1872-8111pii
0168-0102(89)90028-Xjournal_volume
6pub_type
杂志文章abstract::We have generated a transgenic mouse model in which astrocytes express an enhanced green fluorescent protein (EGFP) under the control of the mouse glial fibrillary acidic protein (GFAP) promoter. EGFP, which is characteristically found throughout the cell, was expressed in these animals even in astrocytic fine process...
journal_title:Neuroscience research
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journal_title:Neuroscience research
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