2021 Fiscal Year Final Research Report
A Verification of the effects of ginsenoside Rb1 (gRb1) and dihydroginsenoside Rb1 (dgRb1) on the mild traumatic brain injury.
Project/Area Number |
19K09395
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 55060:Emergency medicine-related
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Research Institution | Ehime University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
朱 鵬翔 愛媛大学, 医学系研究科, 助教 (40380216)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 軽度外傷性脳損傷(mTBI) / ジンセノサイドRb1 / 高次脳機能障害 / 慢性外傷脳症(CTE) |
Outline of Final Research Achievements |
We have proved that the intravenous administration of ginsenoside Rb1 (gRb1) or dihydroginsenoside Rb1 (dgRb1) improves executive function disorders caused by mild traumatic brain injury (MTBI) in mice. Compared to mice treated with saline (vehicle), mice treated with gRb1/dgRb1 showed reduction of proinflammatory cytokine expressions and suppression of glial cell activation in the brain after MTBI. As a result, the administration of gRb1/dgRb1 to mice with MTBI alleviated hyperlocomotion and spatial cognition dysfunction when compared to vehicle infusion. A less Phospho-Tau expression in gRb1/dgRb1-treated mice at 6 months after MTBI as compared to vehicle-infused mice indicates that the onset of chronic traumatic encephalopathy (CTE) is postponed in gRb1/dgRb1 treated mice.
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Free Research Field |
神経損傷、救急医療
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Academic Significance and Societal Importance of the Research Achievements |
軽度外傷性脳損傷(MTBI)による高次脳機能障害と続発する慢性外傷性脳症(CTE)が大きな社会問題となっているが、その経過は未だに不明である。我々の研究では、gRb1/dgRb1の投与によりMTBIモデルマウスの高次脳機能障害症状が改善された。更に約6ケ月間の長期実験で、gRb1/dgRb1を投与されたMTBIモデルマウス脳内のタウタンパク質の蓄積量が対照群より減少した。これらの結果より、MTBIによる高次脳機能障害と続発する慢性外傷性脳症(CTE)に対するgRb1/dgRb1の治療効果が明らかになった。本研究成果は、今後新たな治療法開発につながると期待される。
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