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2022 Fiscal Year Final Research Report

Elucidation of pathophysiology of pseudoprogression for brain tumors

Research Project

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Project/Area Number 20K09336
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionOsaka Medical and Pharmaceutical University

Principal Investigator

Furuse Motomasa  大阪医科薬科大学, 医学部, 准教授 (70340560)

Co-Investigator(Kenkyū-buntansha) 川端 信司  大阪医科薬科大学, 医学部, 准教授 (20340549)
池田 直廉  大阪医科薬科大学, 医学部, 非常勤講師 (50434775)
野々口 直助  大阪医科薬科大学, 医学部, 講師 (70388263)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords脳腫瘍 / Pseudoprogression / 放射線壊死
Outline of Final Research Achievements

Institute for integrated radiation and nuclear science, Kyoto University changed the institutional regulations for the safe transport of radioactive materials. Then rats irradiated neutron beam could not be transferred to CT scan during the whole period of this research. Therefore, we could not perform an experiment about pseudoprogression model using boron neutron capture therapy. About clinical research, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio (PLR), and monocyte-to-lymphocyte ratio were investigated as potential biomarkers for radiation necrosis. The PLR was higher in tumor than that in radiation necrosis, and might have the possibility of biomarkers for radiation necrosis. Further investigation was required to be elucidate the ability of PLR for differentiation between tumor and radiation necrosis.

Free Research Field

脳神経外科学

Academic Significance and Societal Importance of the Research Achievements

脳腫瘍を含むがんの治療においてはその治療効果の判定は今後の治療方針を決定する上で重要である。現在固形癌では画像によって治療反応を評価することが主流であるが、Pseudoprogression(偽増悪)や放射線壊死では、画像上増大を示すため、誤った治療評価を導く恐れがある。本研究では、その病態を解明することと新規の診断確立を目標としたが、病態解明の動物モデルの作成は出来なかった。新たな血液マーカーに鑑別の鍵がある可能性を見出した。さらなる研究によってその可能性を検証する必要があると考えている。

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Published: 2024-01-30  

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