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On the Mechanism Underlying Spasmogenic Actions of Oxy-Hemoglobin on the Cerebral Artery, Analyzed from the Inhibitory Effects of Nicardipine, Procaine and Indomethacin Mamoru DOI 1,2 1Department of Neurosurgery, Iwate Medical University, School of Medicine 2Department of 1st Physiology, Iwate Medical University, School of Medicine Keyword: Vasospasm , Oxy-hemoglobin , Nicardipine , Procaine , Prostaglandins pp.123-130
Published Date 1988/2/10
DOI https://doi.org/10.11477/mf.1436202539
  • Abstract
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The present study was to analyze the basic mechan-ism underlying spasmogenic actions of Oxy-hemoglobin (Oxy-Hb) on the bovine cerebral arteries. Using helical strips of the middle cerebral arteries (M2), the changes in muscular tension during an isometric contraction in-duced by either Oxy-Hb, hydrogen peroxide (H2O2), high potassium-ion-Tyrode (30 mM K+), prostaglandin F (PGF2α ), or carbocyclic thromboxane A2 (cTXA2 were recorded on the polygraph. Blocking effects of nicardipine, procaine indomethacin were compared on the contractions produced by each reagent described above.


Copyright © 1988, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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