2023 Fiscal Year Final Research Report
Investigation of the descending pain inhibitory system in the chronic pain using brain network analysis
Project/Area Number |
18K07730
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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 52040:Radiological sciences-related
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Research Institution | Juntendo University |
Principal Investigator |
Wada Akihiko 順天堂大学, 医学部, 准教授 (90379686)
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Co-Investigator(Kenkyū-buntansha) |
堀 正明 順天堂大学, 医学部, 客員准教授 (40334867)
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Project Period (FY) |
2018-04-01 – 2024-03-31
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Keywords | 慢性疼痛 / 舌痛症 / 脳ネットワーク / MRI / グラフ理論解析 / 機械学習 / 疼痛抑制系 |
Outline of Final Research Achievements |
In this study, brain networks were visualized by diffusion tensor analysis of brain MRI in chronic pain patients and healthy subjects and compared. Graph theory brain network analysis revealed differences in network indices in some pain-related regions in the cerebral hemispheres between the two groups. However, changes in the descending pain suppression system were not clearly detected, and the study did not achieve its initial goal. On the other hand, in an investigation of the different disease types, a decrease in network metrics was observed in some pain-related regions, such as the cingulate gyrus, amygdala, and parietal lobe, in the group of patients with glossodynia, which was different from that in the other disease types. This finding may provide clues to elucidate the pathophysiology of tongue pain, especially in chronic pain.
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Free Research Field |
画像診断
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Academic Significance and Societal Importance of the Research Achievements |
慢性疼痛の病態解明に脳内の疼痛制御ネットワークの探求と理解が進められている。本研究の学術的意義は拡散テンソルMR画像と機械学習を応用した新しいアプローチで検討を行った点にある。本手法のような客観的な評価指標を臨床医療にフィードバックしていくことが、疼痛制御メカニズム解明に貢献できると期待される。 今回の検討内では当初期待した明確な結果は得られなかったものの、舌痛症などの一部疾患で見出されたネットワーク変化は、慢性疼痛の病態解明の手がかりとなりうる。本研究での知見を活かし、慢性疼痛の診断や治療法選択を支援するツール開発につなげることで、罹患患者の苦痛の客観的理解、よりよい治療への寄与が期待できる。
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