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Animal model of cerebral ischemia. Akira TAMURA 1 1Department of Neurosurgery, Teikyo University School of Medicine pp.73-82
Published Date 1991/2/10
DOI https://doi.org/10.11477/mf.1431900112
  • Abstract
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Cerebral ischemia is a complex and multifactorial process. Animal models of cerebral ischemia have been widely used to make clear the pathophysiology of the ischemic brain injury and to test the therapies against cerebral ischemia. Many animal ischemia models have been developed in numerous species and in various forms of cerebral ischemia, namely global and focal, complete and incomplete, and permanent and trasient. In global cerebral ischemia, selective cell vulnerability to ischemia is a most important factor. Neurons appear to be more susceptable to hypoxia and ischemia as compared with other components, such as glial cells and vessels. In global cerebral ischemia models, I reviewed ① the Hossmann's global cerebro-circulatory arrest model by occluding the inominate, the left subclavian and both mammary arteries, ② the bilateral carotid occlusion with systemic hypotension model in rats by Smith et al., ③ the 4 vessel occlusion model in rats by Pulsinelli and Brierly, and ④ the bilateral carotid occlusion model in Mongolian gerbils. On the other hand, the main issue in the focal cerebral ischemia is a concept of ischemic thresholds of cerebral blood flow. The so-calld “zone of ischemic penumbra” is of particular interest as a zone of nonfunctioning but still viable tissue that may recover its function if blood flow can be restored. As the forcal cerebral ischemia model, the middle cerebral artery occlusion model in cats and rats and the embolic stroke model were discussed in this paper.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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