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- W2912891832 endingPage "e22094" @default.
- W2912891832 startingPage "e22094" @default.
- W2912891832 abstract "The insular cortex plays essential roles in nicotine addiction. However, much is still unknown about its cellular and synaptic mechanisms responsible for nicotine addiction. We have previously shown that in layer 5 pyramidal neurons of the mouse insular cortex, activation of the nicotinic acetylcholine receptors (nAChRs) suppresses synaptic potentiation through enhancing GABAergic synaptic transmission, although it enhances both glutamatergic and GABAergic synaptic transmission. In the present study, we examined whether dopamine receptors might contribute to the nicotine-induced inhibition of synaptic potentiation. The nicotine-induced inhibition of synaptic potentiation was decreased in the presence of a D1 dopamine receptor antagonist SCH23390 irrespective of the presence of a D2 dopamine receptor antagonist sulpiride, suggesting that D1 dopamine receptors are involved in nicotine-induced inhibition. We also investigated how dopamine receptors might contribute to the nAChR-induced enhancement of glutamatergic and GABAergic synaptic transmission. The nAChR-induced enhancement of GABAergic synaptic transmission was decreased in the presence of SCH23390 irrespective of the presence of sulpiride, whereas that of glutamatergic synaptic transmission was not altered in the presence of SCH23390 and sulpiride. These results suggest that D1 dopamine receptors are involved in the nAChR-induced enhancement of GABAergic synaptic transmission while dopamine receptors are not involved in that of glutamatergic synaptic transmission. These observations indicate that the interaction between nAChRs and D1 dopamine receptors plays critical roles in synaptic activities in layer 5 pyramidal neurons of the mouse insular cortex. These insular synaptic changes might be associated with nicotine addiction." @default.
- W2912891832 created "2019-02-21" @default.
- W2912891832 creator A5000891804 @default.
- W2912891832 date "2019-02-18" @default.
- W2912891832 modified "2023-09-24" @default.
- W2912891832 title "Interaction of nicotinic acetylcholine receptors with dopamine receptors in synaptic plasticity of the mouse insular cortex" @default.
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- W2912891832 doi "https://doi.org/10.1002/syn.22094" @default.
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