Document Detail


The callosal pattern in striate cortex is more patchy in monocularly enucleated albino than pigmented rats.
MedLine Citation:
PMID:  8938257     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated the effect of neonatal monocular enucleation on the pattern of interhemispheric connections through the corpus callosum in occipital cortex of pigmented and albino rats. Callosal connections were revealed in tangential sections through the flattened cortex following multiple injections of horseradish peroxidase into the opposite hemisphere. In pigmented rats, we found that monocular enucleation induces the development of an anomalous band-like accumulation of callosal connections in middle portions of striate cortex in the hemisphere ipsilateral to the remaining eye, as reported previously. In one-eyed albino rats, we also found callosal connections anomalously placed in middle portions of striate cortex, but they tended to form several patches of labeling rather than a single continuous band as in pigmented rats. Densitometric analysis of the callosal patterns revealed that this difference between rat strains was statistically significant. The increased patchiness in the callosal pattern of one-eyed albino rats may reflect differences in the ipsilateral retinal projections in albino versus pigmented rats.
Authors:
P L Abel; J F Olavarria
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Neuroscience letters     Volume:  204     ISSN:  0304-3940     ISO Abbreviation:  Neurosci. Lett.     Publication Date:  1996 Feb 
Date Detail:
Created Date:  1997-02-06     Completed Date:  1997-02-06     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7600130     Medline TA:  Neurosci Lett     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  169-72     Citation Subset:  IM    
Affiliation:
Department of Psychology, University of Washington, Seattle 98195-1525, USA.
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MeSH Terms
Descriptor/Qualifier:
Albinism / physiopathology
Animals
Corpus Callosum / cytology*,  growth & development
Eye Enucleation*
Horseradish Peroxidase
Pigmentation / physiology
Rats
Rats, Sprague-Dawley
Vision, Monocular / physiology*
Visual Cortex / cytology*,  growth & development
Grant Support
ID/Acronym/Agency:
EY09343/EY/NEI NIH HHS; T32 EY07031/EY/NEI NIH HHS
Chemical
Reg. No./Substance:
EC 1.11.1.-/Horseradish Peroxidase

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


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