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Study on Blood-flow in Spinal Cord and Nerve Root

Research Project

Project/Area Number 63570712
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Orthopaedic surgery
Research InstitutionFujita Health University

Principal Investigator

YOSHIZAWA Hidezo  Fujita Health University, Depatrment of Medicine, Professor, 医学部, 教授 (60084555)

Co-Investigator(Kenkyū-buntansha) MIYACHI Masaya  Fujita Health University, Department of Medicine, Assistant, 医学部, 助手
SHIBAYAMA Toru  Fujita Health University, Department of Medicine, Assistant, 医学部, 助手
HACHIYA Yudo  Fujuta Health University, Department of Medicine, Assistant, 医学部, 助手
KOBAYASHI Shigeru  Fujita Health University, Department of Medicine, Assistant, 医学部, 助手
NAKAI Sadaaki  Fujita Health University, Department of Medicine, Assistant, 医学部, 助手
西沢 活史  藤田学園保健衛生大学, 医学部, 助手
黒瀬 純一  藤田学園保健衛生大学, 医学部, 研究員
Project Period (FY) 1988 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1989: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1988: ¥700,000 (Direct Cost: ¥700,000)
KeywordsNerve Root / Spinal cord / Anatomical structure / Blood flow / Oxygen partial pressure / Cerebro spinal fluid flow / Compression disturbance / 塩酸エペリゾン / 後根神経節 / 脊髄誘発電位 / 解部学的構造
Research Abstract

The fine structure, circulatory dynamics and the role of cerebrospinal fluid in the spinal cord and nerve roots of adult dogs have been studied to clarify the pathophysiology of the spinal cord and nerve roots disturbance, using scanning electron micro-scope, transmission electron microscope, motor, driven high speed camera, micro-blood flow meter (electro chemically generated hydrogen washout method), partial oxygen pressure meter and electromygraphy (DANTEC-N2000).
Results
1. Redicular arteriesand veins nourishing nerve roots are loosely connected with the nerve root sheath and flooring in the cerebrospinal fluid.
2. The endoneurial space is communicating with the subarachnoid space through the nerve root sheath which is very thin and permeable for the cerebrospinal fluid.
3. The blood flow in the nerve root decreases by 20 percent due to interception or exclusion of the cerebrospinal fluid.
4. Intraradicular capillaries are all continuous type and so the bloodnerve barrier is strong, but … More vasogenic edema occurs due to breakage of the barrier when the nerve root is compressed by more than 30 Grs.
5. Intravenous injection of proper amount of Eperisone hydrochloride (4-Ethy-2-methy-3-piperidinopropiopheone) increases the blood flow in the nerve root.
6. The blood flow in the lumbosacral spinal cord is reduced severely by interception of thoracic aorta. Evoked spinal cord action potentials are also decreased severely and the latency is prolonged.
7. When the clamp is released 30 minutes after interception of thoracic aorta, evoked spinal cord action potentials recover quickly, but the blood flow in the lumbosacral spinal cord specially in the gray matter stays in the reduced level for longer time.
8. The spinal cord is also soaked in the cerebrospinal fluid, because the pia mater is permeable for the cerebrospinal fluid and Virchow-Robin perivascular space reaches endarteries and endveins in all over the spinal cord.
9. The blood flow in the spinal cord decreases by about 15 percent due to interception or exclusion of the cerebrospinal fluid.
10. The partial oxygen pressure of the normal cerebrospinal fluid is considerably higher than the pressure in the spinal cord and the latter decreases by about 15 percent due to interception or exclusion of the cerebrospinal fluid.
11. These results indicate that the spinal cord and nerve roots are closely concerned with the cerebrospinal fluid, and changes in the condition of the cerebrospinal fluid flow exert serious influence upon the spinal cord and nerve roots. Less

Report

(4 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • 1988 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] 小林 茂,他6名: "髄液流に関する実験的研究ー神経根部における形態学的観察ー" 日本パラプレジア医学会雑誌. 2. 118-119 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 蜂谷 裕道,他5名: "腰仙部後根神経節血流障害に関する実験的研究" 日本パラプレジア医学会雑誌. 2. 114-115 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 蜂谷 裕道,他4名: "腰仙部後根神経節の血流に対する髄液の影響" 中部日本整形外科災害外科学会雑誌. 33. 45-47 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 柴山 通,他5名: "髄液流に関する実験的研究ー脊髄における形態学的観察ー" 日本パラプレジア医学会雑誌. 3. 208-209 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 柴山 通,他4名: "脊髄の血流に対する髄液の影響" 中部日本整形外科災害外科学会雑誌. 33. 43-45 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 吉沢 英造,他2名: "神経根周囲の関題ー栄養と癒着ー" 脊椎脊髄ジャ-ナル. 3. 833-839 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 柴山 通他4名: "脊髄の血流に対する髄液の影響" 中部日本整形外科災害外科学会雑誌. 33. 43-45 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 柴山 通他5名: "髄液流に関する実験的研究ー脊髄における形態学的観察ー" 日本パラプレジア医学会雑誌. 3. 208-209 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中井 定明他4名: "頸椎症性脊髄症に対する前方除圧固定手術の成績" 中部日本整形外科災害外科学会雑誌. 33. 1008-1009 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 蜂谷 裕道他4名: "腰仙部後根神経節の血流に対する髄液の影響" 中部日本整形外科災害外科学会雑誌. 33. 45-47 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉沢 英造他2名: "特集Failed Back Syndromeー椎間板ヘルニアを主としてー神経根周囲の問題:栄養と療養" 脊椎・脊髄ジャ-ナル. 3. 833-839 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 黒瀬 純一他7名: "神経根血流障害に関する実験的研究ー塩酸エペリゾン投与の影響ー" 藤田学園医学会誌. 14. 123-125 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉沢英造: "脊椎・脊髄の血行-争点・疑問点を中心に" 日本整形外科学会雑誌. 63. 395-402 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 蜂谷裕未知: "腰仙部後根神経節血流障害に関する実験的研究" 日本パラプレジア医学会雑誌. 2. 114-115 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hidezo Yoshizawa: "Effects of compression on intraradicular blood flow in dog" Spine. 14. 1220-1225 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 柴山通: "脊髄の血流に対する髄液の影響" 中部日本整形外科災害外科学会雑誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] 宮地雅也: "脊髄虚血に関する実験的研究-脊髄誘発電位の変化" 藤田学園医学会誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] 黒瀬純一: "神経根血流障害に関する実験的研究-塩酸エペリゾン投与の影響"

    • Related Report
      1989 Annual Research Report
  • [Publications] 小林茂: 中部日本整形外科災害外科学会雑誌. 32. 133-135 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林茂: 中部日本整形外科災害外科学会雑誌. 32. 135-138 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hidezo Yoshizawa.: Spine.14. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林茂: 藤田学園医学会誌. 13. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林茂: 藤田学園医学会誌. 13. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林茂: 日本パラプレジア医学会誌. 2. (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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