Abstract:
:Tonic GABA type A (GABAA) conductance is a key factor regulating neuronal excitability and computation in neuronal networks. The magnitude of the tonic GABAA conductance depends on the concentration of ambient GABA originating from vesicular and non-vesicular sources and is tightly regulated by GABA uptake. Here we show that the transport system regulating ambient GABA responsible for tonic GABAA conductances in hippocampal CA1 interneurons depends on its source. In mice, GABA from vesicular sources is regulated by mouse GABA transporter 1 (mGAT1), while that from non-vesicular sources by mouse GABA transporters 3/4 (mGAT3/4). This finding suggests that the two transporter systems do not just provide backup for each other, but regulate distinct signaling pathways. This allows individual tuning of the two signaling systems and indicates that drugs designed to act at specific transporters will have distinct therapeutic actions.
journal_name
Front Cell Neuroscijournal_title
Frontiers in cellular neuroscienceauthors
Song I,Volynski K,Brenner T,Ushkaryov Y,Walker M,Semyanov Adoi
10.3389/fncel.2013.00023subject
Has Abstractpub_date
2013-03-13 00:00:00pages
23issn
1662-5102journal_volume
7pub_type
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journal_title:Frontiers in cellular neuroscience
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pub_type: 杂志文章,评审
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00365
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pub_type: 杂志文章
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
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journal_title:Frontiers in cellular neuroscience
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pub_type: 杂志文章
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2012.00034
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00272
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00128
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00086
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doi:10.3389/fncel.2020.00228
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journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2013.00039
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journal_title:Frontiers in cellular neuroscience
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doi:10.3389/fncel.2018.00347
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journal_title:Frontiers in cellular neuroscience
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