All-trans retinoic acid is well known as a modulator of positional specification in vertebrate development. A similar mechanism may operate in molluscan development. Molluscan development is characterized by an invariant pattern of cell divisions, which allows the study of individual cells in the de
Retinoic acid induces changes in Xenopus embryo glycolipid pattern
β Scribed by Angela M. Rizzo; Rosalba Gornati; Federica Rossi; Giovanni Bernardini; Bruno Berra
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 321 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1065-6995
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β¦ Synopsis
Abstract
Retinoic acid (RA), known for its important role in cellular differentiation, may cause a modification of glycolipid distribution characterized by a shift from globoserie towards lattoβ and ganglioβseries. In the present paper, we have investigated the modifications of the lipidic pattern after exogenous RA treatment of Xenopus embryos. We have noticed a decrease in neutral glycolipids with a parallel increase in gangliosides; the content of sulfatides does not seem to be modified. Beside the shift toward ganglioβserie, we have also observed a redistribution inside this class of lipids. In particular, following RA treatment, the relative distribution of GD1b and GT1b increases while that of GM3 decreases.
π SIMILAR VOLUMES
Retinoic acid (RA) induces pattern duplication in the proximodistal (PD) axis of axolotl limb regenerates. The effect is dose-dependent, with the maximum extent of duplication being evoked at a dose of 150 pg RA/g body weight. The same dose of RA induces maximum pattern completion in the anteropost