南方医科大学学报2026，Vol.46Issue(3)：489-496,8.DOI:10.12122/j.issn.1673-4254.2026.03.02
艾司氯胺酮通过激活小鼠mPFC区谷氨酸能神经元发挥抗抑郁样作用
Esketamine alleviates depression-like behaviors in mice with chronic restraint stress by activating glutamatergic neurons in the medial prefrontal cortex
摘要
Abstract
Objective To investigate the regulatory role of glutamatergic neurons in the medial prefrontal cortex(mPFC)in the antidepressant effects of esketamine.Methods A total of 150 male C57BL/6J mice were randomly divided into 15 groups(n=10).The mice subjected to the chronic restraint stress(CRS),and those exhibiting depressive-like behaviors following CRS received either esketamine or saline treatment,and subsequent behavioral changes were evaluated.Depressive-like behaviors were assessed using tail suspension test(TST),forced swim test(FST),and sucrose preference test(SPT).The changes in neuronal activity within the mPFC were examined using c-Fos immunofluorescence staining.To explore the underlying mechanism,chemogenetic approaches were employed to specifically modulate the activity of mPFC glutamatergic neurons and examine how these manipulations influenced the effect of esketamine on behaviors of the mice.Results Compared with saline-treated CRS mice,the mice with esketamine treatment showed significantly reduced immobility time in TST and FST and increased sucrose preference rate.Immunofluorescence staining revealed significantly increased expression of c-Fos in glutamatergic neurons in esketamine-treated mice.Chemogenetic activation of mPFC glutamatergic neurons(hM3Dq group)significantly decreased immobility time of the mice in the TST and FST and increased their sucrose preference as compared with the mice in mCherry group(P<0.01),while inhibition of the mPFC glutamatergic neurons(hM4Di group)produced no significant effect.Among the mice treated with esketamine,those in hM4Di group exhibited significantly increased immobility time in TST and FST and decreased sucrose preference compared with those in mCherry group,while the mice in hM3Dq group showed no such changes.Conclusion Esketamine produces antidepressant effects in mice with CRS by activating glutamatergic neurons in the mPFC.关键词
艾司氯胺酮/抑郁/内侧前额叶皮层/谷氨酸能神经元Key words
esketamine/depression/medial prefrontal cortex/glutamatergic neurons引用本文复制引用
张倬宁,郝新宇,曹福羊,郭永馨,郭舒婷,蔡辰,米卫东,仝黎..艾司氯胺酮通过激活小鼠mPFC区谷氨酸能神经元发挥抗抑郁样作用[J].南方医科大学学报,2026,46(3):489-496,8.基金项目
国家自然科学基金(82171180) （82171180）
中华医学会麻醉学分会青年麻醉医师科研基金(Z-2017-24-2421)Supported by National Natural Science Foundation of China(82171180). （Z-2017-24-2421）
