Altered expression of parvalbumin and calbindin in interneurons within the primary visual cortex of neonatal enucleated hamsters.
Neuroscience
; 171(4): 1326-40, 2010 Dec 29.
Article
em En
| MEDLINE
| ID: mdl-20937364
ABSTRACT
In the present study, we tested the hypothesis that the expression of calcium binding proteins (CaBPs), parvalbumin (PV), calretinin (CR) and calbindin (CB), is dependent upon sensory experience as emphasized in visual deprivation and deafferentation studies. The expression of CaBPs was studied in interneurons within the primary and extrastriate visual cortices (V1, V2M, V2L) and auditory cortex (AC) of adult hamsters enucleated at birth. The effects of enucleation were mainly confined to area V1 where there was a significant volume reduction (26%) and changes in the laminar distribution of PV and CB immunoreactive (IR) cells. The density of PV-IR cell bodies was significantly increased in layer IV and reduced in layer V. Moreover, the density of CB-IR neurons was inferior in layer V of V1 in enucleated hamsters (EH) compared to controls. These results suggest that some features of the laminar distribution of specific CaBPs, in primary sensory cortices, are dependent upon or modulated by sensory input.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Parvalbuminas
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Córtex Visual
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Proteína G de Ligação ao Cálcio S100
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Enucleação Ocular
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Regulação da Expressão Gênica
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Interneurônios
Limite:
Animals
Idioma:
En
Revista:
Neuroscience
Ano de publicação:
2010
Tipo de documento:
Article
País de publicação:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA