Document Detail

Erythropoietin improves functional and histological outcome in neonatal stroke.
MedLine Citation:
PMID:  15879287     Owner:  NLM     Status:  MEDLINE    
Neonatal stroke is a condition that leads to disability in later life, and as yet there is no effective treatment. Recently, erythropoietin (EPO) has been shown to be cytoprotective following brain injury and may promote neurogenesis. However, the effect of EPO on functional outcome and on morphologic changes in neonatal subventricular zone (SVZ) following experimental neonatal stroke has not been described. We used a transient focal model of neonatal stroke in P10 rat. Injury was documented by diffusion weighted MRI during occlusion. Immediately upon reperfusion, either EPO (5U/gm) or vehicle was administered intraperitoneally and animals were allowed to grow for 2 wk. Sensorimotor function was assessed using the cylinder rearing test and then brains were processed for volumetric analysis of the SVZ. Stroke induced SVZ expansion proportional to hemispheric volume loss. EPO treatment markedly preserved hemispheric volume and decreased the expansion of SVZ unilaterally. Furthermore, EPO treatment significantly improved the asymmetry of forelimb use following neonatal stroke. This functional improvement directly correlated with the amount of preserved hemispheric volume. These results suggest EPO may be a candidate in the treatment of neonatal stroke.
Yun Sil Chang; Dezhi Mu; Michael Wendland; R Ann Sheldon; Zinaida S Vexler; Patrick S McQuillen; Donna M Ferriero
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-05-05
Journal Detail:
Title:  Pediatric research     Volume:  58     ISSN:  0031-3998     ISO Abbreviation:  Pediatr. Res.     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-06-29     Completed Date:  2005-09-15     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0100714     Medline TA:  Pediatr Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  106-11     Citation Subset:  IM    
Departments of Neurology and Pediatrics, University of California-San Francisco, 521 Parnassus Avenue, San Francisco, CA 94143-0663, USA.
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MeSH Terms
Animals, Newborn
Behavior, Animal
Brain / metabolism,  pathology
Brain Injuries / pathology
Coloring Agents / pharmacology
Erythropoietin / pharmacology,  physiology*
Erythropoietin, Recombinant / pharmacology
Hypoxia-Ischemia, Brain
Magnetic Resonance Imaging / methods
Neurons / metabolism
Oxazines / pharmacology
Rats, Sprague-Dawley
Reperfusion Injury
Stroke / pathology
Time Factors
Treatment Outcome
Reg. No./Substance:
0/Coloring Agents; 0/Erythropoietin, Recombinant; 0/Oxazines; 11096-26-7/Erythropoietin; 18472-89-4/cresyl violet

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