Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/163906
Title: Upregulation of Dpysl2 and Spna2 gene expression in the rat brain after ischemic stroke
Authors: Indraswari, Fransisca
Wong, Peter TH 
Yap, Elgin 
Ng, YK 
Dheen, S Thameem 
Keywords: Science & Technology
Life Sciences & Biomedicine
Biochemistry & Molecular Biology
Neurosciences
Neurosciences & Neurology
Ischemia
Dihydropyrimidinase-like 2 (Dpysl2)
alpha-Spectrin 2 (Spna2)
Rat
Gene expression
Stroke
RESPONSE MEDIATOR PROTEIN-2
FOCAL CEREBRAL-ISCHEMIA
ALPHA-II-SPECTRIN
BIPOLAR DISORDER
ARTERY OCCLUSION
NERVOUS-SYSTEM
CELL-DEATH
CALPAIN
NEURONS
INJURY
α-Spectrin 2 (Spna2)
Issue Date: 1-Sep-2009
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: Indraswari, Fransisca, Wong, Peter TH, Yap, Elgin, Ng, YK, Dheen, S Thameem (2009-09-01). Upregulation of Dpysl2 and Spna2 gene expression in the rat brain after ischemic stroke. NEUROCHEMISTRY INTERNATIONAL 55 (4) : 235-242. ScholarBank@NUS Repository.
Abstract: Ischemia activates the synthesis of potentially damaging and protective proteins in the central nervous system. Dihydropyrimidinase-like 2 (Dpysl2), a protein involved in neuronal differentiation and axonal guidance, and α-spectrin 2 (Spna2), a protein involved in maintaining neuronal membrane integrity, were found altered in various nervous system diseases. Modifications of Dpysl2 and Spna2 proteins have been reported in focal ischemic stroke, but their significance is not yet established. Therefore, this study was aimed to investigate the temporal expression of Dpysl2 and Spna2 genes in normal and stroke rat brain and to characterize stroke brains for cell areas, apoptosis, and microglia cells. The middle cerebral artery of rat brain was occluded and the brain tissue was sectioned for in situ hybridization of Dpysl2 and Spna2 genes, TUNEL, and OX-42 immunofluorescence staining. Dpysl2 and Spna2 mRNA expression was quantified by real-time RT-PCR. Characterization of stroke brain for apoptosis and microglia cells showed apoptotic cells and activated microglia, mainly in the infarct core of ipsilateral cortex and striatum of stroke brain. Significant upregulation of Dpysl2 and Spna2 mRNA expression in the penumbra region after stroke was observed predominantly in injured swollen cells in the cortex and striatum. Upregulation of Dpysl2 and Spna2 expression in hypertrophic cells in the penumbra regions of cortex and striatum of stroke brain indicates an early neuronal defense mechanism involving active neuronal repair, regeneration and development, as these genes are known to be involved in neurite outgrowth and plasticity. © 2009 Elsevier Ltd. All rights reserved.
Source Title: NEUROCHEMISTRY INTERNATIONAL
URI: https://scholarbank.nus.edu.sg/handle/10635/163906
ISSN: 01970186
18729754
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