Seasonal variations of melatonin secretion in young females under natural and artificial light conditions in Fukuoka, Japan.
作者： Tomoko Ueno-Towatari , Kyoko Norimatsu , Krzysztof Blazejczyk , Hiromi Tokura , Takeshi Morita
DOI: 10.2114/JPA2.26.209
关键词: Artificial light 、 Circadian rhythm 、 Animal science 、 Seasonality 、 Internal medicine 、 Light intensity 、 Young female 、 Melatonin secretion 、 Saliva 、 Melatonin 、 Biology 、 Endocrinology
摘要: The purpose of this study was to examine the seasonal variations melatonin secretion subjects and their surrounding light conditions. Eight Japanese female students (20.1±2.6 yrs, Mean±SD) living in Fukuoka, Japan, participated present study. Saliva samples were collected every 3 hours over course a day, intensity during daily life measured 1 min for 5 days four seasons. Almost all had different secretory profiles autumn, with only two showing similar rhythms peak values calculated by spline interpolation higher autumn than those other seasons (p 1,000 lux at least thirty minutes seasons, there no significant differences among them. relationship between level amount time daytime exposure >1,000 autumn. During season, positive correlation (r=0.83, p<0.05, n=6), except subjects, whose remained low.
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