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Changes in melatonin secretion with age and pubescence.

F Waldhauser, H Steger

    Journal of Neural Transmission. Supplementum
    |January 1, 1986
    PubMed
    Summary
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    Melatonin (aMT) levels in children show an inverse pattern to sexual maturation, decreasing significantly from early childhood to adulthood. This suggests a potential link between the pineal gland and human reproductive development.

    Area of Science:

    • Endocrinology
    • Neuroendocrinology
    • Pediatrics

    Background:

    • Early reports linked pineal tumors with precocious puberty, prompting research into the pineal gland's role in sexual maturation.
    • Animal studies demonstrated that melatonin (aMT), particularly its circadian secretion, modulates sexual maturation and gonadal activity.
    • Previous research established methods for evaluating adult circadian aMT patterns but lacked precision in children.

    Purpose of the Study:

    • To characterize the circadian secretion pattern of melatonin (aMT) in children across different age groups.
    • To investigate the relationship between melatonin (aMT) levels and the hypothalamo-pituitary-gonadal axis activity in humans.

    Main Methods:

    • Analysis of single day- and nighttime serum samples from 280 subjects across all ages.

    Related Experiment Videos

  • Quantification of melatonin (aMT) levels using specific and precise assays.

    • Main Results:

    • Melatonin (aMT) levels were low in infancy, peaked between 1-3 years, and decreased by 75% by adulthood.
    • The observed pattern of melatonin (aMT) levels in humans is inversely correlated with gonadotropin and gonadal activity.
    • Adult melatonin (aMT) levels remained relatively stable after reaching young adulthood.

    Conclusions:

    • The study characterized the developmental pattern of melatonin (aMT) secretion in humans, revealing an inverse relationship with reproductive maturation.
    • Further research is required to determine if the observed negative correlation between pineal gland and hypothalamo-pituitary-gonadal axis activity is causal or coincidental.