Document Detail


No improvement by amphetamine on learned non-use, attempts, success or movement in skilled reaching by the rat after motor cortex stroke.
MedLine Citation:
PMID:  17553013     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Amphetamine (AMPH) has been proposed as a treatment for post-stroke motor deficits when coupled with symptom-relevant physical rehabilitation. Whereas a number of experimental studies report improvements in endpoint measures of skilled reaching for food by rats, there has been no assessment of whether beneficial effects extend to overcoming learned non-use of the limb in the acute post-stroke period or to the qualitative deficits in movement in the chronic post-stroke period. In addition to evaluating the effects of AMPH on success, these were the objectives of the present study. In three different reaching experiments, groups of rats were pre-trained in skilled reaching for food prior to receiving a motor cortex stroke via pial removal. Postoperatively the rats received periodic AMPH treatment and daily rehabilitation. In the acute post-stroke period, AMPH failed to prevent the development of learned non-use of the limb, and in the acute and chronic period failed to improve recovery of reaching success, and also failed to improve the qualitative aspects of reaching movements. Nevertheless, AMPH did enhance adjunct non-reaching movements of locomotion, rearing and turning. The results are discussed in relation to the idea that the beneficial effects of post-stroke AMPH treatment do not extend to all movements, especially the movements of a forelimb in retrieving and consuming food.
Authors:
Mariam Alaverdashvili; Diana H Lim; Ian Q Whishaw
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The European journal of neuroscience     Volume:  25     ISSN:  0953-816X     ISO Abbreviation:  Eur. J. Neurosci.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-06-07     Completed Date:  2007-08-15     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8918110     Medline TA:  Eur J Neurosci     Country:  France    
Other Details:
Languages:  eng     Pagination:  3442-52     Citation Subset:  IM    
Affiliation:
Department of Neuroscience, Canadian Centre for Behavioral Neurosciences, University of Lethbridge, Alberta, Canada T1K 3M4. mariam.alaverdashvil@uleth.ca
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MeSH Terms
Descriptor/Qualifier:
Amphetamine / therapeutic use*
Analysis of Variance
Animals
Behavior, Animal
Conditioning, Operant / drug effects,  physiology
Disease Models, Animal
Dopamine Uptake Inhibitors / therapeutic use*
Feeding Behavior / drug effects,  physiology
Female
Locomotion / drug effects,  physiology
Motor Cortex*
Motor Skills / drug effects*,  physiology
Movement / drug effects*
Rats
Rats, Long-Evans
Stereotyped Behavior / drug effects
Stroke / pathology,  physiopathology,  therapy*
Time Factors
Video Recording
Chemical
Reg. No./Substance:
0/Dopamine Uptake Inhibitors; 300-62-9/Amphetamine

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