2023 Fiscal Year Final Research Report
Lysophosphatidic acid molecular mechanisms mediated by microglia in a fibromyalgia model
Project/Area Number |
20K16511
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 51030:Pathophysiologic neuroscience-related
|
Research Institution | Kyoto University (2023) Institute of Physical and Chemical Research (2020-2022) |
Principal Investigator |
|
Project Period (FY) |
2020-04-01 – 2024-03-31
|
Keywords | 線維筋痛症 / リゾホスファチジン酸 / ミクログリア |
Outline of Final Research Achievements |
In this study, Positron emission tomography (PET) with [18F]FGD, [18F]DPA-714 was performed. In a Fibromyalgia (FM) model, significant FDG accumulation was found in brain regions closely involved in pain modulation, such as the medial thalamus (MT). These accumulations were abolished in LPA1 receptor knockout mice. We then examined the regions responsible for pain by microglia activation. Significant accumulation of [18F]DPA-714 was found in MT in an FM-like model, suggesting that abnormal neural activity mediated by microglia and LPA in MT is responsible for pain.
|
Free Research Field |
神経科学
|
Academic Significance and Societal Importance of the Research Achievements |
線維筋痛症は原因不明の難治性疼痛疾患である。病態特異的な身体的変化を伴わないため診断も難しい疾患である。そのため、適切なバイオマーカーや病態メカニズムに沿った治療薬の開発が望まれている。本研究の成果は、LPA1受容体およびミクログリアが痛みの情動に関わる内側系関連領域で同時にもしくは相互に作用し、疼痛病態を形成していることを示唆しており、線維筋痛症の病態メカニズムの解明および線維筋痛症におけるバイオマーカー・治療薬ターゲットの創出につながると考えられる。
|