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2017 Fiscal Year Annual Research Report

Clinical use of functional regulation of aquaporin for brain edema decrease using knockdown technique

Research Project

Project/Area Number 15K10526
Research InstitutionAichi Medical University

Principal Investigator

藤田 義人  愛知医科大学, 医学部, 教授 (90238593)

Co-Investigator(Kenkyū-buntansha) 浅井 清文  名古屋市立大学, 大学院医学研究科, 教授 (70212462)
Project Period (FY) 2015-04-01 – 2018-03-31
Keywordsアストロサイト / 脳低温 / 脳浮腫 / ノックダウン
Outline of Annual Research Achievements

神経系の細胞のRNAiはinvitrogen社製のLentiviral RNAi systemを利用した。293FTセルラインでレンチウイルスを発現させるため、作成したpLenti4/BLOCK-IT/Expression Constructに加え、レンチウイルスの作成能力を高めるpLP1、pLP2、pLP/VSVG、pENTER-gusのプラスミドをcotransfectさせた。以上により目的となるAQP Knockdown のshRNAiを発現するレンチウイルスの作成を完了した。アストロサイトのAQP4発現量を、RT-PCRで確認した。以前のKnockdownの発現率に比較して、強くKnockdownしていることが確認できた。
hAPQ4-M23に関しては、permanent cell line を、蛍光顕微鏡の蛋白発現と、ウエスタンブロッティングでの蛋白発現の確認を終え、完成させた。Wild-typeのアストロサイトに導入し、overexpressionできることを確認した。
低酸素負荷によりAQP knockdownと、overexpression 細胞株のphenotypeの形態学変化、培養液の変化を観察した。細胞傷害がネクローシスかアポトーシスによるものかをフローサイトメトリーで検討している。
再酸素化を行う際の至適酸素濃度の決定のため、高濃度の酸素の影響を調べた。50%と80%の条件での培養で細胞傷害を確認した。アストロサイトだけでなく、神経細胞であるSH-SY5Yの培養系でも同様の傷害を確認した。高濃度の酸素傷害を低温が軽減できるかを検討している。またエリスロポエチンが、脳での免疫を司るマイクログリアのLPSで誘導される炎症性サイトカインの誘導を抑制することを見出した。今後さらに脳低温療法の効果の向上に寄与する方策を検討したい。

  • Research Products

    (11 results)

All 2018 2017

All Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (5 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Effect of maternal low-glucose during Cesarean section neonatal hypoglycemia2018

    • Author(s)
      1.Saya Yoshizawa, Yoshihito Fujita, Maiko Hoshika, Nobuyoshi Kusama, Kazuya Sobue
    • Journal Title

      J Anesthesiol Cli Sci.

      Volume: 7 Pages: 2

    • DOI

      http://dx.doi.org/10.7243/2049-9752-7-2

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of 2- or 4-hour oral intake restriction on intraoperative intravascular volume optimization using stroke volume variation analysis: A single-blinded randomized control trial.2018

    • Author(s)
      2.Maiko Hoshika, Yoshihito Fujita, Saya Yoshizawa, Megumi Harima, Kazuya Sobue.
    • Journal Title

      Korean J Anesthesiol

      Volume: 71 Pages: 印刷中

    • DOI

      https://doi.org/10.4097/kja.d.17.00012

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Early Enteral Nutrition is Acceptable in Cyanotic Patients with Systemic-Pulmonary Shunt after Cardiovascular Surgery2017

    • Author(s)
      3.MinHye So, Shinichiro Yoshimura, Yoshihito Fujita, Takeshi Sugiura, Nobuyoshi Kusama, Kazuya Sobue.
    • Journal Title

      J Regl Anesth Intensive Care.

      Volume: 1 Pages: 1-4

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of different surgery procedures on the accuracy of prediction of the plasma concentration of fentanyl: compareson between mastectomy and laparoscopic prostatectomy2017

    • Author(s)
      4.Yoshihito Fujita, Saya Yoshizawa, Maiko Hoshika, Koichi Inoue, Shoko Mastusshita, Hisao Oka, Kazuya Sobue
    • Journal Title

      JA Clinical Reports

      Volume: 3 Pages: 30

    • DOI

      10.1186/s40981-017-0097-2

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cardiac arrest caused by rapidly increasing ascites in a patient with TAFRO syndrome: a case report2017

    • Author(s)
      5.Masatoshi Okumura, Atsushi Ujiro, Yasunori Otsuka, Hiroshi Yamamoto, Sho Wada, Hirofumi Iwata, Toshiaki Kan, Seiji Miyauchi, Atsushi Hashimoto, Yuko Sato, Yoshihito Fujita, Yoshihiro Fujiwara, Hideki Shimaoka
    • Journal Title

      Acute Medicine & Surgery

      Volume: 4 Pages: 344-348

    • DOI

      0.1002/ams2.278

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correlations between dosage and plasma dexmedetomidine concentrations in critically ill infants: a prospective, observational cohort study2017

    • Author(s)
      6.Yoshihito Fujita, Koichi Inoue, Tasuku Sakamoto, Saya Yoshizawa, Maiko Tomita, Toshimasa Toyo’oka, Kazuya Sobue.
    • Journal Title

      Korean J Anesthesiol

      Volume: 70 Pages: 426-433

    • DOI

      https://doi.org/10.4097/kjae.2017.70.4.426

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] rogrammed intermittent bolus infusion reduces phrenic paralysis associated with interscalene block2017

    • Author(s)
      Takayanagi H, Tanaka K, Sato Y, Fujita Y, Fujiwara Y
    • Organizer
      Annual Meeting of American Society Anesthesiologist
    • Int'l Joint Research
  • [Presentation] Continuous rectus sheath block provides effective analgesia after breast reconstruction with free abdominal flap2017

    • Author(s)
      Hashimoto A, Takayanagi H, Kanamori H, Sato Y, Fujita Y, Fujiwara Y
    • Organizer
      Annual Meeting of American Society Anesthesiologist
    • Int'l Joint Research
  • [Presentation] Inhibition of T-type Ca2+ channel induces human neuroblastoma cell death and enhances neurotoxicity of bupibacaine2017

    • Author(s)
      Tanaka K., Sakakibara K., Hashimoto A. Feng G.G., Fujita Y., Fujiwara Y
    • Organizer
      Annual Meeting of the European Anesthesiology
    • Int'l Joint Research
  • [Presentation] Programmed intermittent bolus infusion for interscalene block reduces the incidence of phrenic paralysis on the first postoperative day in patients having shoulder surgery2017

    • Author(s)
      Tanaka K., Shikata Y., Fujita Y., Hashimoto A., Sato Y., Fujiwara Y
    • Organizer
      Annual Meeting of the European Anesthesiology
    • Int'l Joint Research
  • [Presentation] The long-term efficacy and safety of rocuronium and sugammadex in patients undergoing renal transplantation.2017

    • Author(s)
      Ono Y., Fujita Y., Hashimoto A., Sato Y., Fujiwara Y.
    • Organizer
      Annual Meeting of the European Anesthesiology
    • Int'l Joint Research

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Published: 2018-12-17  

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