title: Study of αB-crystallin expression in Gerbil BCAO model of transient global cerebral ischemia.
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.
authors.affiliation: Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha 410011, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Li
authors.forename: Xiaoye
authors.initials: X
authors.lastname: Mo
authors.forename: Zheng
authors.initials: Z
authors.lastname: Jiang
authors.forename: Wenfang
authors.initials: W
authors.lastname: He
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
authors.forename: He
authors.initials: H
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.forename: Liuwang
authors.initials: L
authors.lastname: Zeng
authors.forename: Binbin
authors.initials: B
authors.lastname: Yang
authors.forename: Han
authors.initials: H
authors.lastname: Xiao
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Hu
mesh_terms: D000818:Animals; D002540:Cerebral Cortex / Q000378:metabolism / Q000473:pathology; D004195:Disease Models, Animal; D005849:Gerbillinae; D008297:Male; D008869:Microtubule-Associated Proteins / Q000378:metabolism; D009457:Neuroglia / Q000378:metabolism / Q000473:pathology; D015427:Reperfusion Injury / Q000378:metabolism* / Q000473:pathology; D013997:Time Factors; D038203:alpha-Crystallin B Chain / Q000378:metabolism*
chemical_list: D008869:Microtubule-Associated Proteins; D038203:alpha-Crystallin B Chain