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However, treatments with GABA, DSIP-CBBBP, and DSIP all resulted in increased struggle times compared to the model group, with CBBBP alone not showing a similar effect, indicating a differential impact on depressive-like behaviors and highlighting the potential therapeutic value of these treatments in addressing depressive symptoms associated with insomnia (Riemann et al., 2020

Since 90% of the bodys serotonin originates in the gut, modulating enteric serotonin production could influence central serotonergic tone through vagal afferents that relay gut signals to brain serotonin-producing raphe nuclei

Thrombospondins are astrocyte-secreted proteins that promote CNS synaptogenesis

PLoS ONE 2 , e657 (2007)