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Related Experiment Videos

LH and melatonin secretion patterns in pubertal boys.

M Fevre, T Segel, J F Marks

    The Journal of Clinical Endocrinology and Metabolism
    |December 1, 1978
    PubMed
    Summary

    During puberty, nocturnal sleep significantly increases luteinizing hormone (LH) and melatonin. However, sleep-induced melatonin levels are insufficient to suppress LH secretion in pubertal boys.

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    Area of Science:

    • Endocrinology
    • Neuroendocrinology
    • Reproductive Biology

    Background:

    • Puberty involves complex hormonal changes, including the regulation of luteinizing hormone (LH).
    • Melatonin, a hormone primarily produced during darkness, is implicated in regulating circadian rhythms and reproductive functions.

    Purpose of the Study:

    • To investigate the relationship between plasma levels of LH and melatonin during sleep in pubertal boys.
    • To determine if nocturnal melatonin secretion is sufficient to inhibit LH release during puberty.

    Main Methods:

    • Plasma LH and melatonin concentrations were measured at 20-minute intervals over 24 hours.
    • Four healthy pubertal boys served as subjects for the study.

    Main Results:

    • All four subjects exhibited a significant increase in both LH and melatonin levels during nocturnal sleep.
    • A statistically significant positive correlation was observed between LH and melatonin levels (P < 0.001).

    Conclusions:

    • Nocturnal sleep is associated with augmented LH and melatonin secretion in pubertal boys.
    • The observed melatonin concentrations during sleep are inadequate to suppress spontaneous LH secretion in this age group.
    • This suggests that other factors may play a role in the regulation of LH pulsatility during puberty.

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