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2020 Fiscal Year Final Research Report

New hypothermia therapy by the glial microenvironment for the neonatal hypoxic ischemic encephalopathy

Research Project

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Project/Area Number 18K07832
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionAichi Medical University

Principal Investigator

Hiroki Kakita  愛知医科大学, 医学部, 講師 (40528949)

Co-Investigator(Kenkyū-buntansha) 山田 恭聖  愛知医科大学, 医学部, 教授 (60405165)
青山 峰芳  名古屋市立大学, 医薬学総合研究院(薬学), 教授 (70363918)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords新生児低酸素性虚血性脳症 / グリア / アストロサイト / ミクログリア / 低体温療法
Outline of Final Research Achievements

Hypoxic-ischemic encephalopathy (HIE) has a high morbidity rate and involves severe neurologic deficits, including cerebral palsy. Therapeutic hypothermia (TH) has been shown to decrease the mortality rate and provide neuroprotection in infants with HIE. We demonstrated that hypothermia after oxygen/glucose deprivation stabilized HIF-EPO signaling in astrocytes, and upregulated EPO expression could suppress neuronal apoptosis. In addition, we demonstrated that, under hypothermic conditions, expression of pro-inflammatory cytokines and inducible nitric oxide synthase (iNOS) was suppressed. In addition, phagocytosis of latex beads was significantly suppressed in BV-2 cells under hypothermic conditions.Investigating the neuroprotective effect of EPO from astrocytes and microglia function under hypothermic conditions may contribute to the development of novel neuroprotection-based therapies for HIE

Free Research Field

新生児学

Academic Significance and Societal Importance of the Research Achievements

新生児の後遺症なき生存を阻む大きな壁は脳障害である。近年、低体温療法が新生児低酸素性虚血脳症における治療法として確立している。しかし、その効果は限定的である。今回の検討で低体温療法の脳保護メカニズムの一部をグリアの機能制御という観点で明らかにできた。本研究はグリアに注目した基礎研究で、低体温療法の脳保護メカニズムのさらなる解明、新規補完治療法の開発につながると期待できる。さらにグリアの機能を制御することで低体温療法が施行困難な早産児の脳室周囲白質軟化症も含めた包括的な新生児脳障害の治療成績を向上させることにもつながると考えられる

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Published: 2022-01-27  

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