alexa Activation of inwardly rectifying potassium channels (GIRK1) by co-expressed rat brain cannabinoid receptors in Xenopus oocytes.


Journal of Addiction Research & Therapy

Author(s): Henry DJ, Chavkin C

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Abstract The neuronal cannabinoid receptor clone was expressed of saturable [3H]WIN 55,212-2 binding sites. Co-expression of the cannabinoid receptor with cRNA coding for the G-protein-gated inwardly rectifying K+ channel (GIRK1) resulted in oocytes exhibiting large inward K+ currents in response to the cannabinoid agonist WIN 55,212-2. The activation of the potassium current by WIN 55,212-2 was dose-dependent with an EC50 of 630 nM. These results suggest that activation of inwardly rectifying K+ channels may be an additional effector mechanism for brain cannabinoid receptors.
This article was published in Neurosci Lett and referenced in Journal of Addiction Research & Therapy

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