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	Provedor de dados 77 (2) Autor Fernández,Víctor (2) Adaro,Luis (1) Bravo,Hermes (1) González,Héctor (1) Hernández,Alejandro (1) Inzunza,Oscar (1) Mais... Palavra-chave Cerebral cortex (1) Cortical gradients (1) Environmental enrichment (1) Immunohistochemistry (1) Neuropeptide PV (1) Parietal cortex (1) Polysensorial stimulation (1) Rodents (1) Stereology (1) Undernutrition (1) Mais... Tipo do documento Journal article (2) Ano 2014 (1) 2003 (1) País Chile (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última ENVIRONMENTAL ENRICHMENT DURING EARLY POSTNATAL DEVELOPMENT DECREASES PARVALBUMIN EXPRESSION IN THE RAT SOMATOSENSORY CORTEX 77 Inzunza,Oscar; Bravo,Hermes; Fernández,Víctor. In the rat brain, parvalbumin (PV) expression starts on postnatal day 8 and comprises a heterogeneous population of nonpyramidal GABAergic neurons. In the present work, an immunohistochemical study was done on control and experimental rats submitted to enriched environmental conditions between postnatal days 3 to 18 or 3 to 24. Counts of PV+ neurons were made in the dorsomedial and in the ventrolateral regions of the somatosensory cortex. In control animals, PV+ neurons reached a peak on day 24 declining towards day 120. In these rats a peculiar distribution pattern was detected in which immunoreactive neurons are more numerous in the dorsomedial than ventrolateral regions as well in infragranular than supragranular layers and in posterior regions than... Tipo: Journal article Palavras-chave: Neuropeptide PV; Cerebral cortex; Polysensorial stimulation; Rodents; Immunohistochemistry. Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300001 Effects of Preweaning Polysensorial Enrichment upon Development of the Parietal Cortical Plate of Undernourished Rats: A Stereological Study 77 González,Héctor; Adaro,Luis; Hernández,Alejandro; Fernández,Víctor. This investigation was undertaken in order to quantify the effects of early polysensorial enrichment on the development of cortical pyramids, located in the parietal cortex of rats simultaneously submitted to protein-energy undernutrition. A short period of stimulation during suckling significantly decreases the cellular density in the cortical plate (phylogenetic-ontogenetic evolutionary index). Results suggest that the cerebral cortex develops according to a sophisticated neuronal network, which exhibits a notable degree of structural specificity, regulated by genetic and environmental clues. The most obvious prediction is that environmental influences are probably transduced as a structural expression in the developing parietal cortical plate. Tipo: Journal article Palavras-chave: Environmental enrichment; Cortical gradients; Undernutrition; Parietal cortex; Stereology. Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400016 Registros recuperados: 2 Primeira ... 1 ... Última

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