Consulta: creatorFacets:"Gomes-Leal,W."
Registros recuperados: 2
Data/hora: 09/06/2024 04:34:25

Methylmercury intoxication and histochemical demonstration of NADPH-diaphorase activity in the striate cortex of adult cats
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Oliveira,R.B.; Gomes-Leal,W.; do-Nascimento,J.L.M.; Picanço-Diniz,C.W.
The effects of methylmercury (MeHg) on histochemical demonstration of the NADPH-diaphorase (NADPH-d) activity in the striate cortex were studied in 4 adult cats. Two animals were used as control. The contaminated animals received 50 ml milk containing 0.42 µg MeHg and 100 g fish containing 0.03 µg MeHg daily for 2 months. The level of MeHg in area 17 of intoxicated animals was 3.2 µg/g wet weight brain tissue. Two cats were perfused 24 h after the last dose (group 1) and the other animals were perfused 6 months later (group 2). After microtomy, sections were processed for NADPHd histochemistry procedures using the malic enzyme method. Dendritic branch counts were performed from camera lucida drawings for control and intoxicated animals (N = 80). Average,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: NADPH-dehydrogenase; Visual cortex; Neurotoxicity; Neuropil; Mercury.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000900009

Morphometric analysis of feedforward pathways from the primary somatosensory area (S1) of rats
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Sá,A.L. de; Bahia,C.P.; Correa,V.C.; Dias,I.A.; Batista,C.; Gomes-Leal,W.; Pinho,A.L.S.; Houzel,J.C.; Picanço-Diniz,C.W.; Pereira,A.
We used biotinylated dextran amine (BDA) to anterogradely label individual axons projecting from primary somatosensory cortex (S1) to four different cortical areas in rats. A major goal was to determine whether axon terminals in these target areas shared morphometric similarities based on the shape of individual terminal arbors and the density of two bouton types: en passant (Bp) and terminaux (Bt). Evidence from tridimensional reconstructions of isolated axon terminal fragments (n=111) did support a degree of morphological heterogeneity establishing two broad groups of axon terminals. Morphological parameters associated with the complexity of terminal arbors and the proportion of beaded Bp vs stalked Bt were found to differ significantly in these two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Somatosensory cortex; Barrel field; Feedforward networks; Axon terminal; Axon morphometry.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000600601