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- W4224911253 abstract "Neurotransmitters (NTs) and their metabolites play crucial roles in the regulation of the sleep-wake cycle. Thus, a comprehensive quantitative analysis of NTs would be useful in elucidating the potential mechanisms involved in sedative-hypnotic activities. In this study, we developed a high-throughput quantitative method based on a two-dimensional chromatography-mass spectrometry technique to simultaneously analyze 63 NTs and their metabolites in rat plasma, brain homogenate, and microdialysis samples from five different sleep-associated regions of the brain. Moreover, this method was used to study the neurochemical mechanism of an adenosine analog sedative-hypnotic candidate YZG-331. Most of the correlations between NTs were lost after the administration of the sedative, particularly in the caudate putamen (CPu) and dorsal raphe nucleus (DRN), indicating that the sleep-wake balance was affected. Administration of the adenosine analog YZG-331 could act similar as accumulation of adenosine, inducing adenosine and its metabolite adenine were decreased significantly in the CPu, accompanying with GABA, aspartate, and glutamate changed slightly by the communications between different neurons to further promote sleep. In addition, YZG-331 affected the metabolism of tryptophan and serotonin (5-HT) in the DRN and orbital frontal cortex (OFC). Melatonin and 5-hydroxyindole-3-acetic acid (a metabolite of 5-HT) were significantly increased in the OFC, and the levels of glutamate/glutamine, asparagine, and adrenaline were altered. Sleep homeostasis is a balance between the duration of sleep and wakefulness and is coordinated by all NTs. The high-throughput quantitative method introduced in this study may aid in revealing the temporal cohesion among NTs, evaluating sleep homeostasis, and determining the effects of sedative-hypnotic drugs." @default.
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- W4224911253 date "2022-08-01" @default.
- W4224911253 modified "2023-09-27" @default.
- W4224911253 title "Comprehensive quantitative method for neurotransmitters to study the activity of a sedative-hypnotic candidate using microdialysis and LC×LC-MS/MS" @default.
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- W4224911253 doi "https://doi.org/10.1016/j.talanta.2022.123418" @default.
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