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    题名: N, N-dimethylglycine Protects Behavioral Disturbances and Synaptic Deficits Induced by Repeated Ketamine Exposure in Mice
    作者: 詹銘煥
    Chan, Ming-Huan
    Hsieh, Chung-Pin;Chen, Shao-Tsu;Lee, Mei-Yi;Huang, Chieh-Min;Chen, Hwei-Hsien
    贡献者: 神科所
    关键词: head twitch;ketamine;long-term potentiation;recognition;social interaction
    日期: 2021-09
    上传时间: 2023-02-06 14:12:01 (UTC+8)
    摘要: Ketamine, an N-methyl-d-aspartate receptor (NMDAR) blocker, is gaining ground as a treatment option for depression. The occurrence of persistent psychosis and cognitive impairment after repeated use of ketamine remains a concern. N, N-dimethylglycine (DMG) is a nutrient supplement and acts as an NMDAR glycine site partial agonist. The objective of this study was to assess whether DMG could potentially prevent the behavioral and synaptic deficits in mice after repeated ketamine exposure. Male ICR mice received ketamine (20 mg/kg) from postnatal day (PN) 33-46, twice daily, for 14 days. The locomotor activity, novel location recognition test (NLRT), novel object recognition test (NORT), social interaction test, head twitch response induced by serotonergic hallucinogen, and the basal synaptic transmission and long-term potentiation (LTP) in the hippocampal slices were monitored after repeated ketamine treatment. Furthermore, the protective effects of repeated combined administration of DMG (30 and 100 mg/kg) with ketamine on behavioral abnormalities and synaptic dysfunction were assessed. The results showed that mice exhibited memory impairments, social withdrawal, increased head twitch response, reduced excitatory synaptic transmission, and lower LTP after repeated ketamine exposure. The ketamine-induced behavioral and synaptic deficits were prevented by co-treatment with DMG. In conclusion, these findings may pave a new path forward to developing a combination formula with ketamine and DMG for the treatment of depression and other mood disorders.
    關聯: Neuroscience, Vol.472, pp.128-137
    数据类型: article
    DOI 連結: https://doi.org/10.1016/j.neuroscience.2021.08.004
    DOI: 10.1016/j.neuroscience.2021.08.004
    显示于类别:[神經科學研究所] 期刊論文

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