Abstract
The selective vulnerability of discrete brain regions after short episodes of cerebral ischemia is a phenomenon still unexplained. In the hippocampus in particular, nerve cell loss may become prominent after only 5 min of ischemia. Neurons appear intact during the initial 1–2 days of reperfusion, after which they succumb. In order to investigate the mechanisms involved in this “delayed neuronal death,” and postischemic nerve cell damage in general, in a previous study we demonstrated that preischemic physical activity may protect experimental animals from damage in the gerbil forebrain ischemia model (in preparation; Weber et al. 1989). With 15 min of ischemia there was a dramatic enhancement of survival from 44% in controls to 85% in animals which had access to a “running wheel” before experiencing ischemia. Although the phenomenon is of much scientific interest in itself, it may serve as a tool to study the significance of pathophysiological parameters for outcome from an ischemic episode: With animals from conventional cages and those from cages with access to a running wheel, two groups of gerbils with a known and significantly different prognosis are available. Hence, it is possible to use these animals for short-term experiments where the final outcome of individual experiments cannot be assessed. The present investigation served to compare postischemic regional blood flow for the two groups.
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References
Crain BJ, Westerkam WD, Harrison AH, Nadler JV (1988) Selective neuronal death after transient forebrain ischemia in the Mongolian gerbil: a silver impregnation study. Neuroscience 27:387–402
Hallenbeck JM, Dutka AJ, Tanishima T, Kochanek PM, Kumaroo KK, Thompson C, Obrenovitch TP, Contreras TJ (1986) Polymorphonuclear leukocyte accumulation in brain regions with low blood flow during the early postischemic period. Stroke 17:246–253
Hossmann K-A, Grosse Ophoff B (1986) Recovery of monkey brain after prolonged ischemia. I. Electrophysiology and brain elektrolytes. J Cereb Blood Flow Metab 6:15–21
Hossmann K-A, Zimmermann V (1974) Resuscitation of the monkey rain after 1 h complete ischemia. I. Physiological and morphological observations. Brain Res 81:59–74
Hossmann V, Hossmann K-A, Takagi S (1980) Effect of intravascular platelet aggregation on blood recirculation following prolonged ischemia of the cat brain. J Neurol 222:159–170
Turcani P, Gotoh F, Ishihara N, Tanaka K, Gomi S, Takashima S, Mihara B (1988) Are blood platelets involved in the pathogenesis of ischemic brain edema in gerbils? Stroke 19:486–689
Weber K, Baethmann A, Kempski O (1988) Determinants of survival after forebrain ischemia in Mongolian gerbils. Metab Brain Dis 3:247–255
Weber K, Tranmer B, Schürer L, Baethmann A, Kempski O (1989) Physical activity determines survival of Mongolian gerbils from forebrain ischemia. In: Hartmann A, Kuschinsky W (eds) Cerebral ischemia and calcium. Springer, Berlin Heidelberg New York, pp 79–82
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© 1992 Springer-Verlag, Berlin Heidelberg
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Kempski, O., Stummer, W., Bauer, C., Schürer, L., Baethmann, A. (1992). Postischemic Hyperperfusion and Outcome: An Experimental Study. In: Schmiedek, P., Einhäupl, K., Kirsch, CM. (eds) Stimulated Cerebral Blood Flow. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-77102-6_6
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DOI: https://doi.org/10.1007/978-3-642-77102-6_6
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