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None. Daisy Lin: This author helped in the design of the work, the acquisition, analysis and interpretation of the data, and drafting and revising the manuscript. Jinyang Liu: This author helped in the acquisition, analysis and interpretation of the data, and revising the manuscript. Alizna Florveus: This author helped in the acquisition and analysis of the data. Vanathi Ganesan: This author helped in the design of the work, the acquisition and analysis of the data. James Cottrell: This author helped in the design of the work, the interpretation of the data, and revising the manuscript. 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"/api/journal/3373", "label" : "NEUROSCIENCE 0306-4522 1873-7544", "pIssn" : "0306-4522", "eIssn" : "1873-7544", "reviewType" : "REVIEWED", "noIF" : false, "sciIndexed" : true, "scopusIndexed" : true, "lang" : "FOREIGN", "hungarian" : false, "published" : true, "oldId" : 3373, "snippet" : true }, "volume" : "472", "firstPage" : "116", "lastPage" : "127", "firstPageOrInternalIdForSort" : "116", "pageLength" : 12, "publishedYear" : 2021, "abstractText" : "Understanding the different mechanisms associated with different anesthetic targeted receptors is critical towards identifying accurate long-term outcome measures as a result of early-life anesthetic exposure. We examined changes in GABAA receptor mediated neurotransmission by a predominately GABAA receptor targeted anesthetic, sevoflurane or a predominately NMDA receptor targeted anesthetic, ketamine. Postnatal day 7 male mice were exposed to sevoflurane or ketamine and examined as adults for changes in inhibitory neurotransmission and its associated change in induced seizure activity. Paired pulse stimulation experiment showed that early life sevoflurane treated mice had significantly less hippocampal CA1 inhibition later in life. There was significantly increased CA1 excitatory output in the sevoflurane treated group compared to the no sevoflurane treated group after the GABA agonist muscimol. Similar to our previously established data for early-life sevoflurane, here we established early-life ketamine administration resulted in neurodevelopmental behavioral changes later in life. However, muscimol did not produce a significant difference on the excitatory CA1 output between early-life ketamine group and saline group. While sevoflurane treated mice showed significantly higher induced seizure intensities and shorter latency periods to reach seizure intensity stage 5 (Racine score) compared with no sevoflurane treated mice, this phenomenon was not observed in the ketamine vs. saline treated groups. Early-life sevoflurane, but not ketamine, exposure reduced GABAergic inhibition and enhanced seizure activity later in life. The results indicate that early-life exposure to different anesthetics lead to distinct long-term effects and their unique pathways require mechanistic studies to understand induced long-lasting changes in the brain. (C) 2021 IBRO. Published by Elsevier Ltd. 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