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[Melatonin and LH secretion patterns in pubertal boys (author's transl)]
Annales D'Endocrinologie
|January 1, 1979
Summary
During puberty, luteinizing hormone (LH) and melatonin levels significantly increase during sleep in boys. Despite this, sleep melatonin levels do not prevent spontaneous LH release, suggesting stress may influence diurnal hormone secretion.
Area of Science:
- Endocrinology
- Chronobiology
- Pediatric Physiology
Background:
- Melatonin, a hormone regulating sleep-wake cycles, plays a role in reproductive development.
- Luteinizing hormone (LH) triggers puberty and is regulated by complex hormonal feedback mechanisms.
Purpose of the Study:
- To investigate the relationship between plasma melatonin and LH levels during sleep and wakefulness in pubertal boys.
- To determine if nocturnal melatonin secretion is sufficient to suppress LH release during puberty.
Main Methods:
- Collected plasma samples every 20 minutes for 24 hours from four normal pubertal boys.
- Measured concentrations of melatonin and LH in collected plasma samples.
Main Results:
- All four subjects exhibited significant increases in both LH and melatonin during nocturnal sleep.
- A strong positive correlation (p < 0.001) was observed between LH and melatonin levels.
- Episodic melatonin secretion during daytime wakefulness appeared linked to stress.
Conclusions:
- Nocturnal melatonin levels during puberty are insufficient to inhibit spontaneous LH secretion.
- The interplay between melatonin, LH, and stress warrants further investigation in pubertal development.