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Development of in vivo simultaneous drug monitoring system

Research Project

Project/Area Number 20K16005
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47040:Pharmacology-related
Research InstitutionOsaka University (2021-2022)
Niigata University (2020)

Principal Investigator

Seishiro Sawamura  大阪大学, 大学院医学系研究科, 招へい教員 (10781974)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords抗てんかん薬 / 電気化学 / 生体計測 / リアルタイム計測 / リアルタイム定量 / in vivo計測 / 薬物相互作用 / センサ
Outline of Research at the Start

抗てんかん薬は、臨床上のメリットから2~3種類の薬剤を併用することが多い。しかしながら、その組み合わせや効果に関する理解は不十分で、望ましい効果が得られない場合もしばしばある。この課題を解決するために、最近、申請者らが開発した「針状ダイヤモンド薬物センサ」を用いて、複数薬物を同時に定量する新たな計測系を立ち上げる。この計測法により、てんかんモデル動物に複数の抗てんかん薬を投与した際の、薬物濃度変化と付随する薬効の変化をリアルタイムに捉える。得られるデータを解析することで、抗てんかん薬併用における理論的な投与方法のデザインに役立つ知見を見出す。

Outline of Final Research Achievements

For the treatment of refractory epilepsy, multiple antiepileptic drugs would be administered. However, by conventional analytical methods, it is difficult to quantitatively evaluate pharmacokinetics and cellular functions. Therefore, limited knowledge regarding the combined effects of these drugs is available. In this study, we developed a drug monitoring system using a "needle-like diamond sensor" and created a measurement method to quantitatively and simultaneously monitor multiple antiepileptic drugs in vivo with high sensitivity and real-time capability. This technique is expected to contribute to the quantitative understanding of drug-drug interactions in polytherapy.

Academic Significance and Societal Importance of the Research Achievements

てんかん症例の約3割は単一薬治療に抵抗性の難治性てんかんだとされる。これに対して多剤併用治療が標準的に実施されるが、効果的な組み合わせの予測は難しく、治療効果が少ないことや副作用の発現に苦しむ患者も多い。本研究で創出した、抗てんかん薬の新規計測法は、in vivoリアルタイムでの感度および分解能の高い薬物濃度計測を可能にする。これによって得られる知見は、従来法では難しい、複数薬の相互作用の定量的理解を進めることに貢献する。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (5 results)

  • [Journal Article] A rapid and simple electrochemical detection of the free drug concentration in human serum using boron-doped diamond electrodes2022

    • Author(s)
      Moriyama Hideto、Ogata Genki、Nashimoto Haruma、Sawamura Seishiro、Furukawa Yoshiaki、Hibino Hiroshi、Kusuhara Hiroyuki、Einaga Yasuaki
    • Journal Title

      The Analyst

      Volume: 147 Issue: 20 Pages: 4442-4449

    • DOI

      10.1039/d2an01037b

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of Pharmacokinetics in the Cochlea of the Inner Ear2021

    • Author(s)
      Sawamura Seishiro、Ogata Genki、Asai Kai、Razvina Olga、Ota Takeru、Zhang Qi、Madhurantakam Sasya、Akiyama Koei、Ino Daisuke、Kanzaki Sho、Saiki Takuro、Matsumoto Yoshifumi、Moriyama Masato、Saijo Yasuo、Horii Arata、Einaga Yasuaki、Hibino Hiroshi
    • Journal Title

      Frontiers in Pharmacology

      Volume: 12 Pages: 1-11

    • DOI

      10.3389/fphar.2021.633505

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characterisation of the static offset in the travelling wave in the cochlear basal turn2020

    • Author(s)
      T. Ota, F. Nin, S. Choi, S. Muramatsu, S. Sawamura, G. Ogata, M. P. Sato, Kat. Doi, K. Doi, T. Tsuji, S. Kawano, T. Reichenbach, and H. Hibino
    • Journal Title

      Pflugers Archiv - European Journal of Physiology

      Volume: 472 Issue: 5 Pages: 1-11

    • DOI

      10.1007/s00424-020-02373-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In Vivo Real-Time Simultaneous Examination of Drug Kinetics at Two Separate Locations Using Boron-Doped Diamond Microelectrodes2020

    • Author(s)
      Hanawa Ai、Ogata Genki、Sawamura Seishiro、Asai Kai、Kanzaki Sho、Hibino Hiroshi、Einaga Yasuaki
    • Journal Title

      Analytical Chemistry

      Volume: 92 Issue: 20 Pages: 13742-13749

    • DOI

      10.1021/acs.analchem.0c01707

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 電気化学マイクロセンサを用いたin vivo脳内薬物モニタリング2022

    • Author(s)
      澤村晴志朗
    • Organizer
      AMED精神・神経マルチセンシング連携推進ワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] A micro sensing system for in vivo real-time monitoring of drug kinetics2022

    • Author(s)
      Seishiro Sawamura, Genki Ogata, Koli Akiyama, Yasuaki Einaga, Hiroshi Hibino
    • Organizer
      生理研・霊長研・脳研合同シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] A micro sensing system for in vivo real-time monitoring of drug kinetics in brain.2022

    • Author(s)
      Seishiro Sawamura, Ogata Genki, Koei Akiyama, Einaga Yasuaki, Hiroshi Hibino.
    • Organizer
      The 11th NIPS-PRI-BRINU Joint Symposium
    • Related Report
      2021 Research-status Report
  • [Presentation] ダイヤモンド電極を用いた皮膚刺入型薬物センサの開発2022

    • Author(s)
      澤村 晴志朗, Norzahirah Binti Ahmad, 緒方 元気, 秋山 洸英, 石井 あゆみ, 栄長 泰明, 日比野 浩
    • Organizer
      細胞の局所コミュニティ研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] 針状ダイヤモンド電極を用いた複数薬物のリアルタイム定量法2020

    • Author(s)
      澤村 晴志朗、緒方 元気、桑原 沙耶香、加藤 理都、浅井 開、ラズビナ オリガ、栄長 泰明、日比野 浩
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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