Abstract:
:Serotonergic neurons are thought to play a role in depression and obsessive compulsive disorder. However, their functional transmitter repertoire is incompletely known. To investigate this repertoire, intracellular recordings were obtained from 132 cytochemically identified rat mesopontine serotonergic neurons that had re-established synapses in microcultures. Approximately 60% of the neurons evoked excitatory glutamatergic potentials in themselves or in target neurons. Glutamatergic transmission was frequently observed in microcultures containing a solitary serotonergic neuron. Evidence for co-release of serotonin and glutamate from single raphe neurons was also obtained. However, evidence for gamma-aminobutyric acid release by serotonergic neurons was observed in only two cases. These findings indicate that many cultured serotonergic neurons form glutamatergic synapses and may explain several observations in slices and in vivo.
journal_name
Neuronjournal_title
Neuronauthors
Johnson MDdoi
10.1016/0896-6273(94)90283-6subject
Has Abstractpub_date
1994-02-01 00:00:00pages
433-42issue
2eissn
0896-6273issn
1097-4199pii
0896-6273(94)90283-6journal_volume
12pub_type
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