The effects and measures of inhalational anesthesia exposure on the developing rat brain

2014 Fiscal Year Final Research Report

• Project/Area Number: 24592291
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Anesthesiology/Resuscitation studies
• Research Institution: Akita University
• Principal Investigator: GOYAGI TORU 秋田大学, 医学部, 講師 (30302277)
• Co-Investigator(Kenkyū-buntansha): KIMURA Tetsu 秋田大学, 医学系研究科, 講師 (00312702) ; NISHIKAWA Toshiaki 秋田大学, 医学系研究科, 教授 (50156048)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: anesthetic toxicity / developing brain / neonatal brain / neural apoptosis / neural degeneration / sevoflurane / dexmedetomidine / erythropoietin

Outline of Final Research Achievements

Ii is well known that anesthetic exposure induces neural apoptosis and degeneration in neonatal immature brain, resulted in behavioral disorder and decline of learning ability after growth. We examined whether sevoflurane anesthesia with or without additional oxygen induce neuronal apoptosis and long-term cognitive dysfunction in neonatal rats. 3% sevoflurane exposure for long hours with low oxygen increased caspase positive cells in cortex and hippocampus and impaired the long-term cognitive function in neonatal rats. Moreover, the administration of dexmedetomidine or erythropoietin improved the spatial memory, and increased the normal cells in the brain 6 weeks after anesthesia exposure. In addition, sevoflurane exposure attenuated the long-term potentiation of CA1 cells in 6 weeks aged rats.

Free Research Field

麻酔科学、神経科学