Selective serotonin reuptake inhibitors suppress sharp wave ripples in the ventral hippocampus

Autor: Hiromi Shiozaki, Nahoko Kuga, Tasuku Kayama, Yuji Ikegaya, Takuya Sasaki
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Journal of Pharmacological Sciences, Vol 152, Iss 2, Pp 136-143 (2023)
Druh dokumentu: article
ISSN: 1347-8613
DOI: 10.1016/j.jphs.2023.04.003
Popis: Biased memory processing contributes to the development and exacerbation of depression, and thus could represent a potential therapeutic target for stress-induced mental disorders. Synchronized spikes in hippocampal neurons, corresponding to sharp wave ripples (SWRs), may play a crucial role in memory reactivation. In this study, we showed that the frequency of SWRs increased in the ventral hippocampus, but not in the dorsal hippocampus, after stress exposure. Administration of the selective serotonin reuptake inhibitors (SSRIs) fluoxetine and fluvoxamine inhibited the generation of ventral hippocampal SWRs and reduced locomotor activity and local field potential power in the gamma bands. These results suggest that the antidepressant effects of SSRIs may be mediated by the suppression of ventral hippocampal SWRs.
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