Cobalt blocks postsynaptic responses induced by neurotransmitters in the hippocampus in vitro.

Abstract:

:Divalent metals such as cobalt are frequently used by neurophysiologists to prevent synaptic transmission, because they are thought to selectively block presynaptic calcium conductance. Recording intracellularly from hippocampal CA3 pyramidal cells we show that Co2+ (2 mM) is not specific in this action but also diminishes postsynaptic responses mediated by agonists acting at ionotropic and metabotropic glutamatergic receptors, as well as GABAA, GABAB, adenosine, and cholinergic receptors. These findings indicate that a more selective substance should be employed for experiments where neurotransmitter release must be blocked.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Gerber U,Gähwiler BH

doi

10.1016/0304-3940(91)90507-p

subject

Has Abstract

pub_date

1991-12-16 00:00:00

pages

53-6

issue

1

eissn

0304-3940

issn

1872-7972

pii

0304-3940(91)90507-P

journal_volume

134

pub_type

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