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Retinoids in embryonal development.

S A Ross1, P J McCaffery, U C Drager

  • 1Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Nutritional Products, Labeling, and Dietary Supplements, Washington, DC, USA.

Physiological Reviews
|July 14, 2000
PubMed
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Vitamin A, crucial for embryonic development, exerts its effects through retinoids. Understanding retinoid metabolism and receptor interactions reveals insights into developmental processes and potential teratogenic risks.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Pharmacology

Background:

  • Vitamin A is essential for embryonic development.
  • Retinoids, active metabolites of Vitamin A, play a critical role.
  • Understanding retinoid signaling is key to developmental processes.

Purpose of the Study:

  • To review the physiological actions of retinoids in embryogenesis.
  • To examine retinoid metabolism and potential teratogenicity.
  • To elucidate the interaction of retinoids with nuclear receptors and target genes.

Main Methods:

  • Review of existing literature on retinoid function in embryonic development.
  • Analysis of data from retinoid ligand and receptor knockout models.
  • Summary of studies on retinoid metabolism and teratogenic effects.

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Main Results:

  • Retinoids act as ligands for nuclear receptors, influencing gene expression.
  • Retinoid metabolism in embryonic tissues is complex.
  • High doses of retinoids can have teratogenic consequences.
  • Knockout models highlight the importance of retinoid signaling pathways.

Conclusions:

  • Retinoids are fundamental regulators of embryogenesis.
  • Interactions with nuclear receptors and target genes, including homeobox genes, are critical.
  • Further research is needed to fully elucidate retinoid signaling in development.