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2019 Fiscal Year Annual Research Report

Visualization of epileptogenesis by PET multi-tracer methods

Research Project

Project/Area Number 17K10886
Research InstitutionTokyo Medical and Dental University

Principal Investigator

稲次 基希  東京医科歯科大学, 医学部附属病院, 講師 (00422486)

Project Period (FY) 2017-04-01 – 2020-03-31
Keywordsてんかん / PET
Outline of Annual Research Achievements

内側側頭葉てんかん患者16名に対する検討において、MPDXPETをは神経焦点での結合は上昇せず、焦点診断に適当なトレーサーではないことが明らかとなった。一方でSPM統計解析では両側前頭葉皮質、両側帯状回において有意な結合能の上昇を認めた。ROI解析においてもSPM統計解析で認めた結合能上昇部位において、有意な上昇が確認された。このことは焦点周囲におけるてんかん抑制機能及びや神経保護機能を示すと思われた。結合能の上昇は、罹患期間が長い症例で強く、また重積のない患者でより強かった。このことからもアデノシン結合能が、てんかん波の拡散を止める機能を示していると思われる。これらの結果は外傷における臨床研究の結果、動物実験での虚血実験の結果とおおむね一致しており、アデノシンA1受容体機能の解明につながるとともに、アデノシンが神経疾患の治療ターゲットとして可能性があることを示しているものと考えられる。
グリアイメージングでは、キンドリングモデルラットにおいて著明な上昇を認め、比較的長期間持続することが確認された。しかしながら臨床においては、3つのトレーサーにて評価したが、明らかな焦点描出における上昇は認められなかった。このことは、てんかん焦点におけるグリア細胞の活性上昇は病理所見にて認めるが、慢性疾患であるてんかんにおいては、その程度が軽度であり、動物モデルのような変化はないものと推察された。今後てんかんの中でも比較的変化が強いと思われる皮質形成異常などでの検討が望ましいと考える。

  • Research Products

    (17 results)

All 2020 2019

All Journal Article (9 results) Presentation (8 results) (of which Int'l Joint Research: 8 results)

  • [Journal Article] Detection of hemodynamic impairment on 15O gas PET using visual assessment of arterial spin-labeling MR imaging in patients with moyamoya disease2020

    • Author(s)
      Hara Shoko、Tanaka Yoji、Ueda Yasuhiro、Abe Daisu、Hayashi Shihori、Inaji Motoki、Maehara Taketoshi、Ishii Kenji、Nariai Tadashi
    • Journal Title

      Journal of Clinical Neuroscience

      Volume: 72 Pages: 258~263

    • DOI

      10.1016/j.jocn.2019.11.026

  • [Journal Article] Regression of White Matter Hyperintensity after Indirect Bypass Surgery in a Patient with Moyamoya Disease2019

    • Author(s)
      Hara Shoko、Hori Masaaki、Inaji Motoki、Maehara Taketoshi、Aoki Shigeki、Nariai Tadashi
    • Journal Title

      Magnetic Resonance in Medical Sciences

      Volume: 18 Pages: 247~248

    • DOI

      10.2463/mrms.ci.2018-0088

  • [Journal Article] Unraveling Specific Brain Microstructural Damage in Moyamoya Disease Using Diffusion Magnetic Resonance Imaging and Positron Emission Tomography2019

    • Author(s)
      Hara Shoko、Hori Masaaki、Ueda Ryo、Hayashi Shihori、Inaji Motoki、Tanaka Yoji、Maehara Taketoshi、Ishii Kenji、Aoki Shigeki、Nariai Tadashi
    • Journal Title

      Journal of Stroke and Cerebrovascular Diseases

      Volume: 28 Pages: 1113~1125

    • DOI

      10.1016/j.jstrokecerebrovasdis.2018.12.038

  • [Journal Article] テクニカル・ノート 遠位部前大脳動脈瘤の部位,親動脈を同定するためのカラードップラーエコーの有用性2019

    • Author(s)
      澤栁 文菜、前原 健寿、壽美田 一貴、田中 洋次、唐鎌 淳、工藤 琢巳、田村 郁、菅原 貴志、稲次 基希、成相 直
    • Journal Title

      Neurological Surgery 脳神経外科

      Volume: 47 Pages: 321~327

    • DOI

      10.11477/mf.1436203937

  • [Journal Article] Usefulness of [<sup>11</sup>C] Methionine PET in the Differentiation of Tumefactive Multiple Sclerosis from High Grade Astrocytoma2019

    • Author(s)
      HASHIMOTO Satoka、INAJI Motoki、NARIAI Tadashi、KOBAYASHI Daisuke、SANJO Nobuo、YOKOTA Takanori、ISHII Kenji、TAKETOSHI Maehara
    • Journal Title

      Neurologia medico-chirurgica

      Volume: 59 Pages: 176~183

    • DOI

      10.2176/nmc.oa.2018-0287

  • [Journal Article] Intravoxel incoherent motion perfusion in patients with Moyamoya disease: comparison with 15O-gas positron emission tomography2019

    • Author(s)
      Hara Shoko、Hori Masaaki、Ueda Ryo、Hagiwara Akifumi、Hayashi Shihori、Inaji Motoki、Tanaka Yoji、Maehara Taketoshi、Ishii Kenji、Aoki Shigeki、Nariai Tadashi
    • Journal Title

      Acta Radiologica Open

      Volume: 8 Pages: 1-1

    • DOI

      10.1177/2058460119846587

  • [Journal Article] Effect of a collaborative transdisciplinary team approach on oral health status in acute stroke patients2019

    • Author(s)
      Obana Michiyo、Furuya Junichi、Matsubara Chiaki、Tohara Haruka、Inaji Motoki、Miki Kazunori、Numasawa Yoshiyuki、Minakuchi Shunsuke、Maehara Taketoshi
    • Journal Title

      Journal of Oral Rehabilitation

      Volume: 46 Pages: 1170~1176

    • DOI

      10.1111/joor.12855

  • [Journal Article] Bayesian Estimation of CBF Measured by DSC-MRI in Patients with Moyamoya Disease: Comparison with 15O-Gas PET and Singular Value Decomposition2019

    • Author(s)
      Hara S.、Tanaka Y.、Hayashi S.、Inaji M.、Maehara T.、Hori M.、Aoki S.、Ishii K.、Nariai T.
    • Journal Title

      American Journal of Neuroradiology

      Volume: 40 Pages: 1894-1900

    • DOI

      10.3174/ajnr.A6248

  • [Journal Article] Effectiveness of perampanel as a first add-on antiepileptic drug for the treatment of partial epilepsy2019

    • Author(s)
      Takahashi Satoru、Shimizu Kazuhide、Inaji Motoki、Hashimoto Satoka、Yamamoto Shinji、Maehara Taketoshi
    • Journal Title

      Epilepsy & Behavior

      Volume: 100 Pages: 106492~106492

    • DOI

      10.1016/j.yebeh.2019.106492

  • [Presentation] Astrocyte dysfunction induced by abnormal tryptophan metabolism in the pathology of epilepsy.2019

    • Author(s)
      Hashimoto S , Maeda J , Takuwa H , Takado Y , Shimojo M , Takahashi M , Urushihata T , Sampei K , Minamihisamatsu T , Inaji M , Kumata K , Ming-Rong Z , Suhara T , Maehara T
    • Organizer
      the 33rd International Epilepsy Congress
    • Int'l Joint Research
  • [Presentation] Perampanel administration as an add-on therapy in patients with partial seizures2019

    • Author(s)
      Thamamongood I, Takahashi S, Hashimoto S, Inaji M, Yamamoto S, Maehara T.
    • Organizer
      the 33rd International Epilepsy Congress
    • Int'l Joint Research
  • [Presentation] [11C] MPDX PET imaging of adenosine A1 receptors in mesial temporal lobe epilepsy patients2019

    • Author(s)
      Inaji M, Hayashi S, Nariai T, Sakata M, Ishii K, Maehara T.
    • Organizer
      the 33rd International Epilepsy Congress
    • Int'l Joint Research
  • [Presentation] Changes in cerebral blood flow during pregnancy detected by arterial spin labeling MRI in healthy subjects and in the patients with moyamoya disease.2019

    • Author(s)
      Tanaka Y, Miyasaka N, Hara S, Inaji M, Maehara T, Nariai T.
    • Organizer
      BRAIN and BRAIN PET 2019
    • Int'l Joint Research
  • [Presentation] Insights into the improvement of neurocognitive dysfunction after indirect bypass surgery in adult Moyamoya disease; 15O-gas positron emission tomography study.2019

    • Author(s)
      Hara S, Kudo T, Hayashi S, Inaji M, Maehara T, Ishii K, Nariai T.
    • Organizer
      BRAIN and BRAIN PET 2019
    • Int'l Joint Research
  • [Presentation] Postoperative anti-epileptic drugs of patients treated by hippocampal transection.2019

    • Author(s)
      Taketoshi Maehara, Motoki Inaji, Satoka Hashimoto, Asumi Orihara
    • Organizer
      The 13th Asian Epilepsy Surgery Congress (AESC2019)
    • Int'l Joint Research
  • [Presentation] The difference of metabolism and neuroinflammation between epileptic animal models.2019

    • Author(s)
      S.Hashimoto, J.Maeda, M.Inaji, K.Kumata, M.Chang, T.Maehara, M.Higuchi.
    • Organizer
      AES2019
    • Int'l Joint Research
  • [Presentation] Views of patients with epilepsy on wearable seizure prediction system; Impact of two different type of devices on sleep quality.2019

    • Author(s)
      Miyajima M, Yamakawa T, Fujiwara K, Seki T, Ohno T, IimoriM, Inaji M, Osoegawa H, Kano M, Maehara T.
    • Organizer
      World sleep 2019
    • Int'l Joint Research

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Published: 2021-01-27  

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