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- W2618294567 abstract "The developing brains of pediatric patients are highly vulnerable to anesthetic regimen (e.g., lidocaine), potentially causing neurological impairment. Recently, dexmedetomidine (DEX) has been used as an adjunct for sedation, and was shown to exert dose-dependent neuroprotective effects during brain injury. However, the maximum safe dose of DEX is unclear, and its protective effects against lidocaine-related neurotoxicity need to be confirmed. In this study, PC12 and NG108-15 cells were used to estimate safe, non-cytotoxic doses of DEX. We found that 100 and 60 μM are the maximum safe dose of DEX for PC12 and NG108-15 cells, respectively, with no significant cytotoxicity. Lidocaine was found to remarkably inhibit cell vitality, but could be reversed by different doses of DEX, especially its maximum safe dose. Furthermore, the apoptosis induced by lidocaine was also assessed, and 100 and 60 μM DEX showed optimal protective effects in PC12 and NG108-15 cells, respectively. Mechanistically, DEX activated the mitogen-activated protein kinase (MAPK) pathway, impaired caspase-3 expression, and enhanced anti-apoptotic factor Bcl-2 to resist lidocaine-induced apoptosis, indicating that the optimal dose of DEX alleviates lidocaine-induced cytotoxicity and should be considered in clinical application." @default.
- W2618294567 created "2017-06-05" @default.
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- W2618294567 date "2017-07-01" @default.
- W2618294567 modified "2023-09-25" @default.
- W2618294567 title "Dexmedetomidine inhibits activation of the MAPK pathway and protects PC12 and NG108-15 cells from lidocaine-induced cytotoxicity at its maximum safe dose" @default.
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- W2618294567 doi "https://doi.org/10.1016/j.biopha.2017.04.084" @default.
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