Regulation of hypoxia-inducible factor 1α and induction of vascular endothelial growth factor in a rat neonatal stroke model

被引:194
作者
Mu, DZ
Jiang, XN
Sheldon, RA
Fox, CK
Hamrick, SEG
Vexler, ZS
Ferriero, DM
机构
[1] Univ Calif San Francisco, Dept Neurol, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Dept Pediat, San Francisco, CA 94143 USA
关键词
development; ischemia; brain; tolerance; neuroprotection;
D O I
10.1016/j.nbd.2003.08.020
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Stroke is a devastating condition occurring in at least 1 in 4000 live births in the neonatal period. Since hypoxia-inducible factor (HIF)-1alpha can modulate ischemic injury via induction of target genes that may protect cells against ischemia, and is induced after preconditioning by hypoxia in the neonatal rat brain hypoxia-ischemia model, we evaluated whether HIF-1alpha is induced after focal ischemia-reperfusion, a model for neonatal stroke. We developed an ischemia-reperfusion model in postnatal day 10 (P10) rats by transiently occluding the middle cerebral artery (MCA) for 1.5 h. The MCA territory was reperfused for 0, 4, 8, or 24 h and the expression of HIF-1alpha and its target gene, vascular endothelial growth factor (VEGF), were delineated. HIF-1alpha protein and VEGF protein peaked at 8 h, and declined subsequently at 24 h in injured cortex following 1.5 h of MCA occlusion. Double-immunolabeling indicated that both HIF-1alpha and VEGF are expressed together in neurons with a similar time course of expression. The presence of HIF-1alpha and VEGF after moderate ischemia-reperfusion injury suggests potential avenues to exploit for neuroprotection. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码:524 / 534
页数:11
相关论文
共 54 条
[1]   VASCULAR ENDOTHELIAL GROWTH-FACTOR ACTS AS A SURVIVAL FACTOR FOR NEWLY FORMED RETINAL-VESSELS AND HAS IMPLICATIONS FOR RETINOPATHY OF PREMATURITY [J].
ALON, T ;
HEMO, I ;
ITIN, A ;
PEER, J ;
STONE, J ;
KESHET, E .
NATURE MEDICINE, 1995, 1 (10) :1024-1028
[2]   Stabilization of wild-type p53 by hypoxia-inducible factor 1α [J].
An, WG ;
Kanekal, M ;
Simon, MC ;
Maltepe, E ;
Blagosklonny, MV ;
Neckers, LM .
NATURE, 1998, 392 (6674) :405-408
[3]   DIFFERENTIAL EXPRESSION OF VASCULAR ENDOTHELIAL GROWTH-FACTOR (VASCULAR-PERMEABILITY FACTOR) FORMS IN RAT-TISSUES [J].
BACIC, M ;
EDWARDS, NA ;
MERRILL, MJ .
GROWTH FACTORS, 1995, 12 (01) :11-15
[4]   Detection of hypoxic cells with the 2-nitroimidazole, EF5, correlates with early redox changes in rat brain after perinatal hypoxia-ischemia [J].
Bergeron, M ;
Evans, SM ;
Sharp, FR ;
Koch, CJ ;
Lord, EM ;
Ferriero, DM .
NEUROSCIENCE, 1999, 89 (04) :1357-1366
[5]  
Bergeron M, 2000, ANN NEUROL, V48, P285, DOI 10.1002/1531-8249(200009)48:3<285::AID-ANA2>3.0.CO
[6]  
2-8
[7]   Induction of hypoxia-inducible factor-1 (HIF-1) and its target genes following focal ischaemia in rat brain [J].
Bergeron, M ;
Yu, AY ;
Solway, KE ;
Semenza, GL ;
Sharp, FR .
EUROPEAN JOURNAL OF NEUROSCIENCE, 1999, 11 (12) :4159-4170
[8]   Normobaric hypoxia induces tolerance to focal permanent cerebral ischemia in association with an increased expression of hypoxia-inducible factor-1 and its target genes, erythropoietin and VEGF, in the adult mouse brain [J].
Bernaudin, M ;
Nedelec, AS ;
Divoux, D ;
MacKenzie, ET ;
Petit, E ;
Schumann-Bard, P .
JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM, 2002, 22 (04) :393-403
[9]   Brain genomic response following hypoxia and re-oxygenation in the neonatal rat - Identification of genes that might contribute to hypoxia-induced ischemic tolerance [J].
Bernaudin, M ;
Tang, Y ;
Reilly, M ;
Petit, E ;
Sharp, FR .
JOURNAL OF BIOLOGICAL CHEMISTRY, 2002, 277 (42) :39728-39738
[10]   A conserved family of prolyl-4-hydroxylases that modify HIF [J].
Bruick, RK ;
McKnight, SL .
SCIENCE, 2001, 294 (5545) :1337-1340