Search results for "embryo retina"

Purification of a fetal bovine serum factor that inhibits DNA synthesis in chick embryo retinas

1992

Pattern of polyamines and related monoacetyl-derivatives in chick embryo retina during development

1994

The pattern of polyamine and GABA in chicken embryo retina photoreceptor membranes

1997

Insulin and IGFs induce apoptosis in chick embryo retinas deprived of L-glutamine

1999

In chick embryo retinas, cultured in serum-free medium lacking L-glutamine, IGF-I, IGF-II and insulin induced apoptotic DNA fragmentation and cell death, IGF-I being the most efficacious compound. The apoptotic effect, which was particularly evident in retinas removed from 7-day-old chick embryos, declined with the age of the embryos and disappeared after day 11. Apoptosis appeared after a time lag of 8 h and then increased with time up to 16 h. Cycloheximide, an inhibitor of protein synthesis, was capable of entirely abolishing apoptotic cell death. The effect induced by IGFs or insulin was suppressed by the addition of glutamine. Cytokine-mediated apoptosis was also observed after withdra…

Polyamines and ripening of photoreceptor outer-segment in chicken embryo.

1995

Polyamines and their related monoacetyl derivatives were studied in rod outer segment (ROS) and cone outer segment (COS) of photoreceptor cells from chick embryo retina during eye development (7th-18th days). Putrescine was found to be necessary, in the second phase of retinogenesis, to sustain both ROS and COS differentiation and, after acetylation, gamma-aminobutyric acid synthesis. On the Other hand, spermidine and even more spermine intervene in the third phase of development when photoreceptors mature. Moreover, the presence of Nl-acetylspermidine already at the 7th day indicates that in the outer segment of photoreceptor cells too, as in the whole retina, putrescine synthesis comes ab…

Inhibitory effect of hydrocortisone administered in ovo on thymidine kinase in chick embryo retina during development

1985

hydrocortisone