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Elucidation of the mechanism of poststroke recovery from hemiparesis and aphasia and the determination of critical perios : a functional MRI study

Research Project

Project/Area Number 16500352
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Rehabilitation science/Welfare engineering
Research InstitutionInternational University of Health and Welfare

Principal Investigator

KATO Hiroyuki  International University of Health and Welfare, Department of Health, Professor, 保健学部, 教授 (60224531)

Co-Investigator(Kenkyū-buntansha) HASHIMOTO Ritsuo  International University of Health and Welfare, Department of Health, Professor, 保健学部, 教授 (50254917)
HIWATARI Masao  International University of Health and Welfare, Graduate School, Professor, 大学院, 教授 (20189898)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2005: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsFunctional MRI / Stroke / Hemiparesis / Functional recovery / Reorganization
Research Abstract

The mechanism of motor functional recovery after stroke is still largely unknown. The purpose of this study was to reveal various patterns of brain activation induced by paretic hand movement during motor recovery after stroke using functional MRI. We selected 21 stroke patients who suffered from mild to moderate hemiparesis. Functional MRI was performed during a task of unilateral hand movement within 28 days of stroke onset and again at least one month later. Nine control subjects were also included. Normal hand movements activated predominantly contralateral primary sensorimotor cortex, supplementary motor areas, and ipsilateral cerebellum. At acute/subacute stages after stroke (15±9 days after onset), activations in these typical motor cortical areas were reduced, with or without activation in additional motor-related areas, such as ipsilateral primary motor cortex and contralateral parietal cortex. At chronic stages (46±16 days after onset), activities in the typical motor areas were restored in many patients. Activation in additional motor-related areas was decreased, persisted or appeared late. The findings suggest that motor functional recovery occurred primarily using the original motor system when damage to it was mild or reversible, recruiting related motor sites transiently or persistently, and that motor reorganization occurred when the damage was not small and irreversible. These restorative and reorganizing processes occurred predominantly within the first 1 to 2 months, and this period seemed critical to motor functional recovery.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (42 results)

All 2007 2006 2005 2004

All Journal Article (42 results)

  • [Journal Article] Near-infrared spectroscopy-計測原理と臨床応用2007

    • Author(s)
      武田湖太郎
    • Journal Title

      脳科学とリハ 7

      Pages: 5-14

    • 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] 脳機能再構築に関する脳機能画像診断の実際2007

    • Author(s)
      加藤宏之
    • Journal Title

      理学療法科学 22

      Pages: 7-12

    • NAID

      10018875217

    • 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] 慢性期脳卒中患者の麻痺手運動時における同側大脳半球の活性化-近赤外分光法による検討-2007

    • Author(s)
      武田湖太郎
    • Journal Title

      脳科学とリハ 7

      Pages: 15-20

    • 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] Microbleedsの臨床的意義とその対応2007

    • Author(s)
      加藤宏之
    • Journal Title

      Annual Review神経2007

      Pages: 133-140

    • 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] Immunohistochemical study on distribution of NF-kB and p53 in gerbil hippocampus after transient cerebral ischemia : effect of pitavastatin.2007

    • Author(s)
      Tounai H
    • Journal Title

      Metab Brain Dis 22

      Pages: 89-104

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Near-infrared spectroscopy. Measurement and clinical application (in Japanese).2007

    • Author(s)
      Takeda K, et al.
    • Journal Title

      Brain Science and Rehabilitation 7

      Pages: 5-14

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Cerebral functional reorganization and functional brain imaging (in Japanese).2007

    • Author(s)
      Kato H
    • Journal Title

      Physical Therapeutic Science 22

      Pages: 7-12

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Activation of ipsilateral brain during paretic hand movement in patients with chronic stroke, NIRS study (in Japanese).2007

    • Author(s)
      Takeda K, et al.
    • Journal Title

      Brain Science and Rehabilitation 7

      Pages: 15-20

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Clinical implication and treatment of cerebral microbleeds (in Japanese).2007

    • Author(s)
      Kato H
    • Journal Title

      Annual Review Shinkei 2007

      Pages: 133-140

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Immunohistochemical study on distribution of NF-kB and p53 in gerbil hippocampus after transient cerebral ischemia : effect of pitavastatin.2007

    • Author(s)
      Tounai H, et al.
    • Journal Title

      Metab Brain Dis 22

      Pages: 89-104

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] fMRIによる脳卒中後の運動・言語機能回復機序の解明と臨界期の同定2006

    • Author(s)
      加藤宏之
    • Journal Title

      INNERVISION 21

      Pages: 57-57

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 高脂血症治療による老年認知障害予防のエビデンス2006

    • Author(s)
      加藤宏之
    • Journal Title

      Mebio 23

      Pages: 6-13

    • 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] Hypertension downregulates the expression of brain-derived neurotrophic factor in the ischemia-vulnerable hippocampal CA1 and cortical areas after carotid artery occlusion.2006

    • Author(s)
      Lee T-H
    • Journal Title

      Brain Res 1116

      Pages: 31-38

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Elucidation of the mechanism of poststroke recovery from hemiparesis and aphasia and the determination of critical perios : a functional MRI study (in Japanese).2006

    • Author(s)
      Kato H
    • Journal Title

      Innervision 21

      Pages: 57-57

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evidence for prevention of dementia with statins (in Japanese).2006

    • Author(s)
      Kato H
    • Journal Title

      Mebio 23

      Pages: 6-13

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Hypertension downregulates the expression of brain-derived neurotrophic factor in the ischemia-vulnerable hippocampal CA1 and cortical areas after carotid artery occlusion.2006

    • Author(s)
      Lee T-H, et al.
    • Journal Title

      Brain Res 1116

      Pages: 31-38

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] MRIによる脳卒中後の運動・言語機能回復機序の解明と臨界期の同定2006

    • Author(s)
      加藤宏之
    • Journal Title

      INNERVISION 21

      Pages: 57-57

    • Related Report
      2006 Annual Research Report
  • [Journal Article] T2*強調MRIによる微小出血の検出2005

    • Author(s)
      加藤宏之
    • Journal Title

      Med Technol 33

      Pages: 122-122

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] 光トポグラフィーによる脳機能診断2005

    • Author(s)
      加藤宏之
    • Journal Title

      Mebio 22

      Pages: 82-87

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Effects of age on immunohistochemical changes in the mouse hippocampus.2005

    • Author(s)
      Himeda T
    • Journal Title

      Mech Ageing Dev 126

      Pages: 673-677

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of chronic administration of nilvadipine against immunohistochemical changes related to aging in the mouse hippocampus.2005

    • Author(s)
      Himeda T
    • Journal Title

      Metab Brain Dis 20

      Pages: 141-153

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Alteration of interneurons of the gerbil hippocampus after transient cerebral ischemia : effect of pitavaststin.2005

    • Author(s)
      Himeda T
    • Journal Title

      Neuropsychopharmacology 30

      Pages: 2014-2025

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Immunohistochemical detection of apoptosis-related proteins in gerbil hippocampus following transient cerebral ischemia : neuroprotective effect of pitavaststin.2005

    • Author(s)
      Himeda T
    • Journal Title

      Am J Biochem Biotechnol 1

      Pages: 220-223

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Detection of microbleeds with T2^*-weighted MRI (in Japanese).2005

    • Author(s)
      Kato H
    • Journal Title

      Ted Technol 33

      Pages: 122-122

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Diagnosis of cerebral function with optical topography (in Japanese).2005

    • Author(s)
      Kato H
    • Journal Title

      Mebio 22

      Pages: 82-87

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of age on immunohistochemical changes in the mouse hippocampus.2005

    • Author(s)
      Himeda T, et al.
    • Journal Title

      Mech Ageing Dev 126

      Pages: 673-677

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of chronic administration of nilvadipine against immunohistochemical changes related to aging in the mouse hippocampus.2005

    • Author(s)
      Himeda T, et al.
    • Journal Title

      Metab Brain Dis 20

      Pages: 141-153

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Alteration of interneurons of the gerbil hippocampus after transient cerebral ischemia : effect of pitavaststin.2005

    • Author(s)
      Himeda T, et al.
    • Journal Title

      Neuropsychopharmacology 30

      Pages: 2014-2025

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Immunohistochemical detection of apoptosis-related proteins in gerbil hippocampus following transient cerebral ischemia : neuroprotective effect of pitavaststin.2005

    • Author(s)
      Himeda T et al.
    • Journal Title

      Am J Biochem Biotechnol 1

      Pages: 220-223

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Alteration of interneurons of the gerbil hippocampus after transient cerebral ischemia : effect of pitavaststin2005

    • Author(s)
      Himeda T, et al.
    • Journal Title

      Neuropsychopharmacology 30

      Pages: 2014-2025

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 「脳の機能検査法マニュアル」、光トポグラフィー2004

    • Author(s)
      加藤宏之
    • Journal Title

      MB Medical Rehabilitation 40

      Pages: 81-86

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] fMRI.加齢と機能再生2004

    • Author(s)
      加藤宏之
    • Journal Title

      臨床画像 20

      Pages: 912-918

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Near Infraredによる脳代謝測定2004

    • Author(s)
      加藤宏之
    • Journal Title

      脳循環代謝 16

      Pages: 290-294

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Protective effect of pitavastatin, a hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor, on ischemia-induced neuronal damage.2004

    • Author(s)
      Kurosaki R
    • Journal Title

      Neurol Res 24

      Pages: 684-691

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of pitavastatin against expression of S100B protein in the gerbil hippocampus after transient cerebral ischemia.2004

    • Author(s)
      Muramatsu Y
    • Journal Title

      Acta Physiol Scand 182

      Pages: 95-107

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Pitavastatin, a 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor, reduces hippocampal damage after transient cerebral ischemia in gerbils.2004

    • Author(s)
      Kumagai R
    • Journal Title

      J Neural Transm 111

      Pages: 1003-1120

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Optical topography (in Japanese).2004

    • Author(s)
      Kato H
    • Journal Title

      MB Medical Rehabilitation 40

      Pages: 81-86

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] fMRI. Aging and functional regeneration (in Japanese).2004

    • Author(s)
      Kato H
    • Journal Title

      Rinsyo Gazo 20

      Pages: 913-918

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Measurements of cerebral metabolism with near-infrared (in Japanese).2004

    • Author(s)
      Kato H
    • Journal Title

      Cereb Blood Flow Metab 16

      Pages: 290-294

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Protective effect of pitavastatin, a hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor, on ischemia-induced neuronal damage.2004

    • Author(s)
      Kurosaki, R et al.
    • Journal Title

      Neurol Res 24

      Pages: 684-691

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of pitavastatin against expression of S100B protein in the gerbil hippocampus after transient cerebral ischemia.2004

    • Author(s)
      Muramatsu, Y et al.
    • Journal Title

      Acta Physiol Scand 182

      Pages: 95-107

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Pitavastatin, a 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor, reduces hippocampal damage after transient cerebral ischemia in gerbils.2004

    • Author(s)
      Kumagai R, et al.
    • Journal Title

      J Neural Transm 111

      Pages: 1003-1120

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary

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Published: 2004-04-01   Modified: 2016-04-21  

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