Data/hora: 05/06/2024 00:28:06

Provedor de dados: | 56
País: | Brazil
Título: | NADPH-diaphorase activity in area 17 of the squirrel monkey visual cortex: neuropil pattern, cell morphology and laminar distribution
Autores: | Franca,J.G.; do-Nascimento,J.L.M.; Picanço-Diniz,C.W.; Quaresma,J.A.S.; Silva,A.L.C.
Data: | 1997-09-01
Ano: | 1997
Palavras-chave: | Nitric oxide synthase; Neocortex; NADPH-diaphorase; Cytochrome oxidase; Primates.
Resumo: | We studied the distribution of NADPH-diaphorase activity in the visual cortex of normal adult New World monkeys (Saimiri sciureus) using the malic enzyme "indirect" method. NADPH-diaphorase neuropil activity had a heterogeneous distribution. In coronal sections, it had a clear laminar pattern that was coincident with Nissl-stained layers. In tangential sections, we observed blobs in supragranular layers of V1 and stripes throughout the entire V2. We quantified and compared the tangential distribution of NADPH-diaphorase and cytochrome oxidase blobs in adjacent sections of the supragranular layers of V1. Although their spatial distributions were rather similar, the two enzymes did not always overlap. The histochemical reaction also revealed two different types of stained cells: a slightly stained subpopulation and a subgroup of deeply stained neurons resembling a Golgi impregnation. These neurons were sparsely spined non-pyramidal cells. Their dendritic arbors were very well stained but their axons were not always evident. In the gray matter, heavily stained neurons showed different dendritic arbor morphologies. However, most of the strongly reactive cells lay in the subjacent white matter, where they presented a more homogenous morphology. Our results demonstrate that the pattern of NADPH-diaphorase activity is similar to that previously described in Old World monkeys
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900008
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X1997000900008
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.30 n.9 1997
Fonte: | info:eu-repo/semantics/openAccess