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Pineal response after pyridoxine test in children
A Muñoz-Hoyos1, I Amorós-Rodríguez, A Molina-Carballo
1Departamento de Pediatría, Hospital Universitario, Facultad de Medicina, Universidad de Granada, Spain.
Journal of Neural Transmission (Vienna, Austria : 1996)
|January 1, 1996
Summary
Vitamin B6 (pyridoxine) significantly boosts melatonin production in children when administered at night. This finding highlights pyridoxine
Area of Science:
- Pediatric Endocrinology
- Neurobiology
- Nutritional Science
Background:
- The pineal gland produces melatonin, a hormone crucial for regulating sleep-wake cycles.
- Vitamin B6 (pyridoxine) is a vital nutrient involved in numerous metabolic processes, including neurotransmitter synthesis.
Purpose of the Study:
- To investigate the effect of pyridoxine administration on plasma melatonin levels in children.
- To determine if pyridoxine influences pineal gland activity in a time-dependent manner.
Main Methods:
- Plasma melatonin concentrations were measured using radioimmunoassay in 120 children aged 1.5-8 years.
- Children were divided into four groups: control day, control night, pyridoxine day, and pyridoxine night.
- Pyridoxine was administered intravenously (3 mg/kg) to the respective groups during daytime or nighttime.
Main Results:
- Pyridoxine administration significantly increased melatonin levels in the pyridoxine night group (39.87 pg/ml basal vs 88.45 pg/ml post-administration, p < 0.001).
- No significant changes in melatonin concentrations were observed in the control groups or the pyridoxine day group.
- Nocturnal pyridoxine administration demonstrated a potent stimulating effect on melatonin production.
Conclusions:
- Nocturnal administration of pyridoxine stimulates melatonin production in children.
- Vitamin B6 may play a role in regulating circadian rhythms through its influence on melatonin synthesis.
- Further research is warranted to explore the therapeutic potential of pyridoxine in sleep and circadian rhythm disorders.