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[Melatonin in the human--an overview]

M Langer1, J Hartmann, H Turkof

  • 1Universitätsklinik für Kinder- und Jugendheilkunde, AKH, Wien, Osterreich.

Wiener Klinische Wochenschrift
|January 24, 1998
PubMed
Summary
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Melatonin, a hormone from the pineal gland, influences seasonal changes and sleep in humans. Its levels vary with age, and it may impact circadian rhythms and the immune system.

Area of Science:

  • Endocrinology
  • Neuroscience

Context:

  • The pineal gland and its hormone, melatonin, regulate seasonal changes in many species.
  • The precise role of melatonin in human physiology remains under investigation.
  • Melatonin secretion follows a circadian pattern, peaking during nighttime darkness.

Purpose:

  • To explore the physiological role of melatonin in humans.
  • To examine the relationship between melatonin levels and different age groups.
  • To assess the effects of exogenous melatonin.

Summary:

  • Melatonin levels are highest in early childhood, decrease through puberty, stabilize, and decline in old age.
  • Melatonin is implicated as a sleep inducer and may influence human circadian rhythms, reproduction, and immunity.
  • Altered melatonin levels are observed in conditions like pineal tumors and circadian rhythm disorders.

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Impact:

  • Exogenous melatonin demonstrates sedative-hypnotic effects with a favorable safety profile.
  • Melatonin holds potential as a natural hypnotic agent for future therapeutic applications.