8-Bromo-cAMP blocks opioid activation of a voltage-gated potassium current in isolated hippocampal neurons.

Abstract:

:We have previously shown that mu-selective opioid agonists activate both an inward rectifying and a voltage-gated potassium conductance in acutely dissociated non-pyramidal neurons from rat hippocampus. We now report that the opioid-activated voltage-gated potassium conductance was blocked by the membrane permeable cAMP analogue 8-bromo-cAMP. In contrast, 8-bromo-cGMP failed to inhibit opioid activation of the voltage-gated potassium current. These results suggest that the opioid-activated potassium channel is regulated by cAMP-dependent phosphorylation.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Wimpey TL,Chavkin C

doi

10.1016/0304-3940(92)90316-y

keywords:

subject

Has Abstract

pub_date

1992-03-16 00:00:00

pages

137-40

issue

1

eissn

0304-3940

issn

1872-7972

pii

0304-3940(92)90316-Y

journal_volume

137

pub_type

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