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Evaluation of focal cerebral ischemia by NMR and histochemistry.

Research Project

Project/Area Number 09470327
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Anesthesiology/Resuscitation studies
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

ARAI Toshiyuki  Kyoto University, Medicine, Associated Professor, 医学研究科, 助教授 (80175950)

Co-Investigator(Kenkyū-buntansha) INUBUSHI Toshiro  Shiga University of Medical Science, Professor, 分子神経生物学研究センター, 教授 (20213142)
森 健次郎  京都大学, 医学研究科, 教授 (20025620)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥13,000,000 (Direct Cost: ¥13,000,000)
Fiscal Year 1998: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1997: ¥9,600,000 (Direct Cost: ¥9,600,000)
Keywordsfocal cerebral ischemia / rat / global brain ischemia / gerbil / nuclear magnetic resonance / lactate / immunohistochemistry / interleukin-1 receptor antagonist / 脳エネルギー代謝 / 砂ネズミ全脳虚血 / 虚血再潅流障害 / 組織化学染色 / 遅発性神経細胞死
Research Abstract

Effects of neroprotective drugs on cerebral ischemia were evaluated in animals using nuclear magnetic resonance (NMR) and immunohistochemical analyses.
1) Focal cerebral ischemia was introduced in spontaneously hypertensive rats (STIR) using a method of intraluminal vascular occlusion. Then, lactate produced in the damaged area was detected by ^1H NMR.spectroscopy. The increase in lactate was larger in transient ischemia than that in permanent one. The increase in lactate in transient ischemia was attenuated by alpha-phenyl-N-tert- butyl nitrone (PBN), a superoxide scavenger.
2) Expression of interleukin-1 receptor antagonist (IL- lra) was investigated in rat brain following transient focal cerebral ischemia induced by 30 min of middle cerebral artery occlusion. The expression of IL-lra was observed on the margin of the neuronal damage 1 day after operation, which was enhanced 4 days after operation and withdrawn 7 days after operation.
3) Neuroprotective effects of PBN and oxypurinol, a xanthine oxidase inhibitor, were examined in gerbil global brain .ischemia. Ischemic neuronal damage were evaluated one week after a 3.5 mm bilateral carotid artery occlusion by a histochemical analysis (cresyl violet staining). PBN administered 30 min after ischemia partially attenuated the neuronal damage, while oxypurinol did not.
These results indicated that the drug effects on focal cerebral ischemia were precisely evaluated using NMR and immunohistochemical analyses.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Arai T, Nakao S, et al.: "Measurement of local cerebral blood flow by magnetic resonance imaging : In vivo autoradiographic strategy using 17O-labeled water." Brain Res Bull. 45. 451-456 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Arai T, Mori H, et al.: "Auto-oxideation of 5, 6, 7, 8-tetrahydroneopterin." Pteridines. 9. 26-28 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mori H, Arai T, et al.: "Neuroprotective effects of pterin-6-aldehyde in gerbil global brain ischemia : comparison with those of α-phenyl-N-tert-butyl nitrone" Neurosci Lett. 241. 99-102 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishii H, Arai T, et al.: "Evaluation of focal cerebral ischemia in rats by magnetic resonance imaging and immunohistochemical analyses." J Cereh Blood Flow Metah. 18. 931-934 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Arai T, Mori H, et al.: "Oxypurinol, a xanthine oxidase inhibitor and a superoxide scavenger, did tno attenuate ischemic neuronal damage in gerbil" Life Sei. 63. PL107-112 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Arai T,Nakao S,Morikawa S,Inubushi T,Yokoi T,Shimizu K,Mori K: "Measurement of local cerebral blood flow by magnetic resonance imaging : In vivo autoradiographic strategy using ^<17>O-labeled water" Brain Res Bull. 45. 451-456 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Arai T,Mori H,Ishii H,Suzuki T,Kojima S,Mori K: "Auto-oxidation of 5,6,7,8-tetrahydroneopterin" Pteridines. 9. 26-28 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mori H,Arai T,Ishii H,Adachi T,Endo N,Makino K,Mori K: "Neuroprotective effects of pterin-6-aldehyde in gerbil global brain ischemia : comparison with those of alpha-phenyl-N-tert butyl nitrone" Neurosci Lett. 241. 99-102 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishii H,Arai T,Morikawa S,Inubushi T,Tooyama I,Kimira H,Mori K: "Evaluation of focal cerebral ischemia in rats by magnetic resonance imaging and immunohistochemical analyses." J Cereb Blood Flow Metab. 18. 931-934 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Arai T,Mori H,Ishii H,Adachi T,Endo N,Makino K,Mori K: "Oxypurinol, a xanthine oxidase inhibitor and a superoxide scavenger, did not attenuate ischemic neuronal damage in gerbils." Life Sci. 63. PL107-112 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Arai T,Nakao S,et al.: "Measurement of local cerebral blood flow by magnetic resonance imaging: In vivo autoradiographic strategy using 170labeled water" Brain Res Bull. 45. 451-456 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Arai T,Mori H^*,et al.: "Auto-oxidation of 5,6,7,8-tetrahydroneopterin." Pteridines. 9. 26-28 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Mori H^*,Arai T,et al.: "Neuroprotective effects of pterin-6-aldehyde in gerbil global brain ischemia: comparison with thous of a-phenyl 1-Nter butyl nitron" Neurosci Lett. 241. 99-102 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ishii H,Arai T^*,et al.: "Evaluation of focal cerebral ischemia in rats by magnetic resonance imaging and immunohistochemical analyses." J Cereb Blood Flow Metab. 18. 931-934 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Arai T,Mori H,et al.: "Oxypurinol,a xanthine oxidase inhibitor and a superoxide scavenger,did not attenuate ischemic neuronal damage in gerbils" Life Sci. 63. PL107-112 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Mori H, Arai T^*, et al.: "Neuroprotective effects of pterin-6-aldehyde in gerbil global brain ischemia : comparison with those of a-phenyl-N-tert-butyl nitrone." Neurosci Lrtt. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Ishii H, Arai T^*, et al.: "Evaluation of focal cerebral ischemia in rats magnetic resonance imaging and immunohistochemical analyses." J Cereb Blood Flow Metab. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Arai T^*, Mori H, et al.: "Oxypurinol, a xanthine oxidase inhibitor and a superoxide scavenger, did not attenuate ischemic neuronal damage in gerbils." Life Sci. (in press). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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