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Melatonin: role in development

F C Davis1

  • 1Department of Biology, Northeastern University, Boston, MA 02115, USA.

Journal of Biological Rhythms
|December 24, 1997
PubMed
Summary
This summary is machine-generated.

Melatonin informs fetuses about time of day and year, influencing reproductive development and circadian rhythm entrainment. This highlights the importance of maternal melatonin rhythms during pregnancy for fetal development.

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Area of Science:

  • Developmental biology
  • Neuroendocrinology
  • Chronobiology

Background:

  • Melatonin is crucial for fetal development, acting as a signal for external environmental periodicity.
  • It plays a role in regulating reproductive development by conveying photoperiod information.

Purpose of the Study:

  • To explore the functions of melatonin during mammalian fetal development.
  • To investigate melatonin's role in entraining the developing circadian pacemaker.
  • To examine the implications of melatonin signaling for prenatal and postnatal circadian rhythms.

Main Methods:

  • Review of existing literature on melatonin's role in fetal development.
  • Analysis of melatonin receptor distribution and abundance during development.
  • Examination of the suprachiasmatic nucleus's response to melatonin.

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Main Results:

  • Melatonin provides fetuses with information about seasons and time of day.
  • It is essential for adaptively regulating reproductive development.
  • Melatonin likely entrains the developing circadian pacemaker, with prenatal maternal entrainment observed in eutherian mammals.
  • Melatonin receptors are more abundant and broadly distributed in developing animals, suggesting diverse developmental effects.

Conclusions:

  • Melatonin signaling is critical for fetal development, impacting reproductive timing and circadian rhythm establishment.
  • The human fetal suprachiasmatic nucleus is sensitive to melatonin, affecting prenatal and postnatal circadian rhythms.
  • Caution is advised regarding exogenous melatonin use during pregnancy and lactation due to potential disruption of endogenous rhythms.