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Regeneration of injured axons with oligodendrocytic signal-processing systems as a marker

Research Project

Project/Area Number 17390406
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Cerebral neurosurgery
Research InstitutionNagoya City University

Principal Investigator

YAMADA Kazuo  Nagoya City University, Neurosurgery, Professor (90150341)

Co-Investigator(Kenkyū-buntansha) KATANO Hiroyuki  Nagoya City university, Neurosurgery, Associate Professor (30295612)
AIHARA Noritaka  Nagoya City university, Neurosurgery, Assistant Professor (00264739)
MASE Mitsuhito  Nagoya City university, Neurosurgery, Associate Professor (60238920)
ASAI Kiyofumi  Nagoya City university, Molecular biology, Professor (70212462)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥15,500,000 (Direct Cost: ¥15,500,000)
Fiscal Year 2006: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2005: ¥10,400,000 (Direct Cost: ¥10,400,000)
Keywordsmyelencephalon specific protease / serine protease / oligodendrocyte / ischemic brain injury / cold injury / regeneration after brain injury / brain edema / neuronal network / 神経再生 / 軸索損傷 / エミリン
Research Abstract

We have studied mRNA and protein expression of myelencephalon-specific protease (MSP) in the brain ischemia and brain injury model in rats, because MSP is oligodendrocyte-specific serine protease and MSP expression is relating to axonal regeneration. As a result, we have detected MSP mRNA and protein expression in the oligodendrocytes locating at peri-ischemic area 3 to 7 days after cerebral ischemia. Question then arises whether MSP expression is caused by direct ischemic injury to the peri-ischemic oligodendrocytes or indirect effect of edema fluid formation on oligodendrocytes. To answer this question, we developed cold injury model in which edema developed around lesion but ischemic injury to the oligodendrocyte was not occurring. We detected in the cold injury model that MSP expression occurred on the 5^<th> day after cold injury. With this result we concluded that edema fluid extending to the surrounding lesion might activate oligodendrocytes and express MSP mRNA and protein expression. We did double immunostaining of MSP and oligodendrocyte-specific marker CNPase, and identified that both markers were co-localizing in the same oligodendrocyte. The results suggest that edema fluid activates oligodendrocytes and act for regeneration of axons. We also did Western blotting of the MSP and identified that MSP proteins has bands at 19kDa (authentic MSP protein) and 37, 40 and 50kDa's. The 37kDa bands increased its volume at 6 hours and 5-7days after cold injury. Those two peaks of reactive production suggested two mechanism of oligodendrocytes activation, initial direct stimulation through neuronal network and secondary indirect stimulation through edema fluid extension. That similar result was also identified in the subarachnoid hemorrhage model and intracerebral hemorrhage model.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (15 results)

All 2008 2007 2006 2005

All Journal Article (14 results) Book (1 results)

  • [Journal Article] Cellular localization of P2X7 receptor mRNA in the rat brain2008

    • Author(s)
      Yu Y, Ugawa S, Ueda T, Ishida Y, Inoue K, Nyunt AK, Umemura A, Mase M, Yamada K, Shimada S
    • Journal Title

      Brain Res 1194

      Pages: 45-55

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Pharmakokinetics of recombinant human lipocarin-type prostaglandin D synthase/beta-trace in canine2008

    • Author(s)
      Li W, Mase M, Inui T, Shimoda M, Isomura K, Oda H, Yamada K, Urade Y
    • Journal Title

      Neurosci Res 61

      Pages: 289-293

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Pharmakokinetics of recombinant human lipocarin-type prostaglandin Dsynthase/beta-trace in canine2008

    • Author(s)
      Li W, Mase M, Inui T, Shimoda M, Isomura K, Oda H, Yamada K, Urade Y
    • Journal Title

      Neurosci Res 61

      Pages: 289-293

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Oral adminisrtration of metal chelator ameliorates motor dysfunction after a small hemorrhage near the Internal capsule In rat2007

    • Author(s)
      Masuda T, Hida H, Kanda Y, Aihara N, Ohta K, Yamada K, Nishino H
    • Journal Title

      J Neurosci Res 85

      Pages: 213-222

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Tailor-made orbitocranioplasty for a sphenoorbital encephalocele presenting asa pulsatile exophthalmus2007

    • Author(s)
      Katano H, Aihara H, Takeuchi Y, Nozaki M, Yamada K
    • Journal Title

      J Neurosurg 106

      Pages: 126-130

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Tissue plasminogen activator In chronic subdural hematomas as a predictive Indicator of recurrence2006

    • Author(s)
      Katano H, Kamiya K, Mase M, Tanikawa M, Yamada K
    • Journal Title

      J Neurosurg 104

      Pages: 79-84

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Gene expression profiling during c6 astrocytoma cell Invasion2006

    • Author(s)
      Sakata T, Tanikawa M, Katano H, Yamada K
    • Journal Title

      Nagoya Med J 47

      Pages: 267-278

    • NAID

      110006979688

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] 「研究成果報告書概要(和文)」より2006

    • Author(s)
      片野広之、山田和雄
    • Journal Title

      脳神経外科学大系(河瀬編集)神経科学「脳虚血の病態と遺伝子発現」(中山書店(東京))

      Pages: 163-175

    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] グリア細胞-その機能と脳浮腫への関与-2006

    • Author(s)
      藤田正隆, 間瀬光人, 浅井清文, 山田和雄
    • Journal Title

      分子脳血管病 5

      Pages: 227-232

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 血液脳関門の分子機構(水チャンネルと脳浮腫への関与)2006

    • Author(s)
      藤田正隆, 間瀬光人, 浅井清文, 山田和雄
    • Journal Title

      脳と循環 11

      Pages: 239-243

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Tissue plasminogen activator in chronic subdural hematoma as a predictor of recurrence2006

    • Author(s)
      Katano H, Kamiya K, Mase M, Yamada K, et al.
    • Journal Title

      J Neurosurg 104

      Pages: 79-84

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Expression of Myelencephalon-Specific Protease after Cryogenic Lesioning of the Rat Parietal Cortex2005

    • Author(s)
      Oka Y, Uchida A, Asai K, Yamada K, et al.
    • Journal Title

      J Neurotrauma 22

      Pages: 501-510

    • Related Report
      2005 Annual Research Report
  • [Journal Article] :Non-invasive measurement of intracranial compliance using cine MRI in normal pressure hydrocephalus.2005

    • Author(s)
      Mase M Miyachi T, Yamada K, et al.
    • Journal Title

      Acta Neurochir 95

      Pages: 303-306

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 血液脳関門・脳浮腫とアクアポリン2005

    • Author(s)
      山田和雄
    • Journal Title

      Jpn J Neuropsychopharmacol 25

      Pages: 235-238

    • NAID

      10016851876

    • Related Report
      2005 Annual Research Report
  • [Book] 脳神経外科学大系(河瀬編集) 神経科学 「脳虚血の病態と遺伝子発現」2006

    • Author(s)
      片野広之, 山田和雄
    • Publisher
      中山書店(東京)
    • Related Report
      2006 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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