Abstract
Animal models of brain ischemia can be divided into focal and global brain ischemia. Among global (often referred to as forebrain) ischemia animal models, the 2-vessel occlusion (2VO) and 4-vessel occlusion (4VO) models in rats are most frequently employed in the studies of molecular mechanisms of neuronal damage after brain ischemia followed by reperfusion. This chapter mainly discusses the rat 2VO model. In this model, reversible forebrain ischemia is produced by bilateral common carotid artery (CCA) occlusion combined with systemic hypotension (50 mmHg) sufficient to induce brain ischemia. This ischemia and reperfusion model affects widespread areas of the forebrain brain. There are two chief histopathological changes in this 2VO ischemia model: (1) selective neuronal vulnerability; typically CA1 pyramidal neurons of the hippocampus are most vulnerable, followed by dorsoventral striatal small- and medium-sized neurons, and pyramidal neurons in the layers 3–4 of the neocortex; and (2) delayed neuronal death, i.e., neuronal death does not occur immediately after transient ischemic episode, but takes place after 2–3 days of reperfusion. This model during the surgical procedure requires artificially maintenance of: (1) rectal and brain temperatures at 37 °C; (2) the mean arterial pressure (MABP); and (3) blood gases. This 2VO ischemia model has the advantage of a one-step surgical procedure that produces high-grade forebrain ischemia. The reproducibility of the ischemic histopathological damage of this model is more than 90%. This animal model is also suitable for molecular, biochemical and physiological studies, as well as for evaluation of neuroprotective procedures and agents.
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References
Dietrich WD, Busto R, Alonso O, Globus MY, Ginsberg MD. Intraischemic but not postischemic brain hypothermia protects chronically following global forebrain ischemia in rats. J Cereb Blood Flow Metab. 1993;13:541–9.
Hu BR, Martone ME, Jones YZ, Liu CL. Protein aggregation after transient cerebral ischemia. J Neurosci. 2000;20:3191–9.
Smith ML, Bendek G, Dahlgren N, Rosen I, Wieloch T, Siesjo BK. Models for studying long-term recovery following forebrain ischemia in the rat. 2. A 2-vessel occlusion model. Acta Neurol Scand. 1984a;69:385–401.
Smith ML, Auer RN, Siesjo BK. The density and distribution of ischemic brain injury in the rat following 2-10 min of forebrain ischemia. Acta Neuropathol (Berl). 1984b;64:319–32.
Wellons JC 3rd, Sheng H, Laskowitz DT, Burkhard Mackensen G, Pearlstein RD, Warner DS. A comparison of strain-related susceptibility in two murine recovery models of global cerebral ischemia. Brain Res. 2000;868:14–21.
Bramlett HM. Sex differences and the effect of hormonal therapy on ischemic brain injury. Pathophysiology. 2005;12:17–27.
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Raval, A.P., Liu, C., Hu, B.R. (2019). Rat Model of Global Cerebral Ischemia: The Two-Vessel Occlusion (2VO) Model of Forebrain Ischemia. In: Chen, J., Xu, Z., Xu, X., Zhang, J. (eds) Animal Models of Acute Neurological Injury. Springer Series in Translational Stroke Research. Springer, Cham. https://doi.org/10.1007/978-3-030-16082-1_7
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DOI: https://doi.org/10.1007/978-3-030-16082-1_7
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