Current pharmacotherapies for post-traumatic stress disorder (PTSD) are limited by delayed onset and side effects. Despite ketamine exhibiting rapid relief of the core symptoms of PTSD, its clinical efficacy varies considerably depending on the timing of drug delivery. However, the underlying mechanism remains unclear. In this study, the therapeutic effects of early (day 1) and late (day 7)...
-methyl-d-aspartate receptor (NMDAR) blockade is crucial for the rapid antidepressant effects of ketamine, the involvement of other mechanisms remains contentious, particularly regarding the role of serotonin, a key neurotransmitter in the target of traditional antidepressants. Here, we demonstrate that ketamine elevates serotonin levels by inhibiting the serotonin transporter (SERT). A...
Orexin can induce arousal from general anaesthesia; however, the underlying mechanisms are not fully understood. Nucleus accumbens (NAc), a downstream target of orexinergic neurones, plays a role in regulating consciousness. We aimed to clarify whether and how the NAc mediates the arousal effects of orexin. Fibre photometry was used to track changes of orexinergic afferent activity during...