Document Detail


Sex differences in the benefits of rehabilitative training during adolescence following neonatal hypoxia-ischemia in rats.
MedLine Citation:
PMID:  20833167     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Much effort and many resources are being devoted to rehabilitative programs for children with disabilities caused by neonatal hypoxic-ischemic encephalopathy without clear evidence of the efficacy of such programs. We recently reported that rehabilitative training tasks during adolescence improve spatial learning impairment following neonatal hypoxic-ischemic injury in rats without histological improvement. In the present study we focused on sex differences. Wister rat pups were exposed to a unilateral hypoxic-ischemic insult at 7 days of age. Six weeks after hypoxia-ischemia, rehabilitative training tasks were started. The tasks consisted of the plus maze, the eight-arm radial maze, and the choice reaction time task. Sixteen weeks after the insult, the water maze task was performed to evaluate spatial learning ability. Afterwards, we morphologically examined brain injury. Our rehabilitative training significantly improved swimming time and length in females (P<0.01) but not in males. Likewise, the training ameliorated infarct areas in the injured cerebral hemisphere in females but not in males (P<0.01). These results suggest that it may be important to develop and evaluate cognitive rehabilitation programs for children with brain injury on the basis of gender.
Authors:
Masahiro Tsuji; Naoya Aoo; Kazuhiro Harada; Yuya Sakamoto; Yoshiharu Akitake; Keiichi Irie; Kenichi Mishima; Tomoaki Ikeda; Michihiro Fujiwara
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-15
Journal Detail:
Title:  Experimental neurology     Volume:  226     ISSN:  1090-2430     ISO Abbreviation:  Exp. Neurol.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-10-26     Completed Date:  2010-11-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370712     Medline TA:  Exp Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  285-92     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
Affiliation:
Department of Regenerative Medicine and Tissue Engineering, National Cerebral and Cardiovascular Center Research Institute, 5-7-1, Fujishiro-dai, Suita, Osaka, 565-8565, Japan. mtsuji@ri.ncvc.go.jp
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Animals
Animals, Newborn
Behavior, Animal
Disease Models, Animal
Female
Hypoxia-Ischemia, Brain / pathology,  physiopathology,  rehabilitation*
Male
Maze Learning / physiology
Random Allocation
Rats
Rats, Wistar
Sex Characteristics*
Swimming / psychology
Teaching / methods*
Treatment Outcome

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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