Evidence for a developmentally regulated neurotrophic activity from chick retina affecting the survival of retinal ganglion cells from newborn rats
Braz. j. med. biol. res
; 25(8): 845-8, 1992. ilus
Article
em En
| LILACS
| ID: lil-113580
Biblioteca responsável:
BR26.1
ABSTRACT
The effect of conditioned medium from aggregates of chick embryo retinal cells was tested on the in vitro survival of retinal ganglion cells were identified by the detection of retrogradely transported horseradish peroxidase injected bilateral into the superior colliculus. Culture medium conditioned with chick embryo retinae was tested on monolayers of rat retinal cells with plating densities ranging from 0.5 to 4 x 10 5 cells/cm2. In all cases the conditioned medium significantly increased the survival of ganglion cells after 2 days in culture. Conditioned media from embryonic days 8 to 16 (E8 to E16) presented neurotrophic activity, with the greatest effect occurring at E10-E12. The conditioned medium had no effect on the adhesion of rat retinal cells. The data suggest that chick retinal cells produce soluble trophic factors which can influence the survivalof rat retinal ganglion cells in vitro. Furthermore, the release of this neurotrophic activity by chick retina seems to be developmentally regulated
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Índice:
LILACS
Assunto principal:
Retina
/
Células Ganglionares da Retina
/
Fármacos do Sistema Nervoso Central
/
Neurônios
Tipo de estudo:
Prognostic_studies
Limite:
Newborn
Idioma:
En
Revista:
Braz. j. med. biol. res
Assunto da revista:
BIOLOGIA
/
MEDICINA
Ano de publicação:
1992
Tipo de documento:
Article