Data/hora: 10/06/2024 10:05:26

Provedor de dados: | 56
País: | Brazil
Título: | Distribution of microglial cells in the cerebral hemispheres of embryonic and neonatal chicks
Autores: | Ignácio,A.R.; Müller,Y.M.R.; Carvalho,M.S.L.; Nazari,E.M.
Data: | 2005-11-01
Ano: | 2005
Palavras-chave: | Microglia; Cerebral hemispheres; Embryos; Neonatal chicks; Gallus domesticus; Tomato lectin.
Resumo: | The distribution, morphology and morphometry of microglial cells in the chick cerebral hemispheres from embryonic day 4 (E4) to the first neonatal day (P1) were studied by histochemical labeling with a tomato (Lycopersicon esculentum) lectin. The histochemical analysis revealed lectin-reactive cells in the nervous parenchyma on day E4. Between E4 (5.7 ± 1.35 mm length) and E17 (8.25 ± 1.2 mm length), the lectin-reactive cells were identified as ameboid microglia and observed starting from the subventricular layer, distributed throughout the mantle layer and in the proximity of the blood vessels. After day E13, the lectin-reactive cells exhibited elongated forms with small branched processes, and were considered primitive ramified microglia. Later, between E18 (5.85 ± 1.5 mm cell body length) and P1 (3.25 ± 0.6 mm cell body length), cells with more elongated branched processes were observed, constituting the ramified microglia. Our findings provide additional information on the migration and differentiation of microglial cells, whose ramified form is observed at the end of embryonic development. The present paper focused on the arrangement of microglial cells in developing cerebral hemispheres of embryonic and neonatal chicks, which are little studied in the literature. Details of morphology, morphometry and spatial distribution of microglial cells contributed to the understanding of bird and mammal central nervous system ontogeny. Furthermore, the identification and localization of microglial cells during the normal development could be used as a morphological guide for embryonic brain injury researches.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100008
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X2005001100008
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.38 n.11 2005
Fonte: | info:eu-repo/semantics/openAccess