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Oxidative Medicine and Cellular Longevity
Volume 2012 (2012), Article ID 945071, 7 pages
http://dx.doi.org/10.1155/2012/945071
Research Article

Study of αB-Crystallin Expression in Gerbil BCAO Model of Transient Global Cerebral Ischemia

Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha 410011, China

Received 31 July 2012; Revised 13 September 2012; Accepted 14 September 2012

Academic Editor: Daniela Giustarini

Copyright © 2012 Ting Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

αB-crystallin (α-BC), the fifth member of mammalian small heat shock protein family (HspB5), is known to be expressed in many tissues and has a distinctive interaction with cytoskeleton components. In this study, we investigated that α-BC and microtubule-associated protein-2 (MAP-2), a neuron-specific cytoskeleton protein, were coexpressed in neurons of Gerbil cortex, while in subcortex Gerbil brains, we found that several MAP-2-negative glia cells also express α-BC. When subjected to 10-minute bilateral carotid artery occlusion (BCAO), an increment was observed in α-BC-positive cells after 6-hour reperfusion and peaked at around 7 days after. In the same circumstances, the number and the staining concentration of MAP-2 positive neurons significantly decreased immediately after 6-hour reperfusion, followed by a slow recovery, which is consistent with the increase of α-BC. Our results suggested that α-BC plays an important role in brain ischemia, providing the early protection of neurons by giving intracellular supports through the maintenance of cytoskeleton and extracellular supports through the protection of glia cells.