Abstract:
:Conventional antidepressant drugs elevate the availability of monoamine neurotransmitters. However, these pharmacological therapies have limited efficacy and a slow onset of action as main limitations. New glutamatergic drugs such as ketamine have shown promise as a rapid-acting antidepressant drugs although with adverse effects. The mechanism of action of ketamine is hypothesized to involve a dis-inhibition of cortical pyramidal neurons produced by an stimulation of AMPA receptors by glutamate. In this context, low-impact positive allosteric modulators of the AMPA receptors (a.k.a. ampakines) have been regarded as potential antidepressant drugs. Here, we have examined the behavioral, biochemical, and molecular effects of a low-impact ampakine, CX717. Our results show that CX717 has a rapid (30 min) but short-lasting (up to 24 h) antidepressant-like effect in the forced swim test. Intra-cortical infusion of CX717 increases the efflux of noradrenaline, dopamine, and serotonin, but not glutamate. However, systemic CX717 does not alter these neurotransmitters. CX717 also produced a rapid (up to 1 h) increase of brain-derived neurotrophic factor (BDNF) and a more sustained (up to 6 h) increase of p11. Overall, CX717 appears to possess a rapid but not sustained antidepressant action possibly caused by rapid increases of BDNF and p11.
journal_name
Mol Neurobioljournal_title
Molecular neurobiologyauthors
Gordillo-Salas M,Pascual-Antón R,Ren J,Greer J,Adell Adoi
10.1007/s12035-020-01954-xsubject
Has Abstractpub_date
2020-08-01 00:00:00pages
3498-3507issue
8eissn
0893-7648issn
1559-1182pii
10.1007/s12035-020-01954-xjournal_volume
57pub_type
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