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The effects of nocturnal life on the circadian patterns of sex hormones in young healthy men
Qin, LQ; Kaneko, T; Li, J; Wang, PY; Xu, JY; Wang, J; Hoshi, K
关键词Nocturnal Life Circadian Rhythm Testosterone Sleep
刊名JOURNAL OF HEALTH SCIENCE
2005-02-01
51期:1页:33-40
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Toxicology
研究领域[WOS]Toxicology
关键词[WOS]GLOBULIN BINDING-CAPACITY ; BOUND TESTOSTERONE ; PROSTATE-CANCER ; PLASMA ; SLEEP ; ENDOCRINE ; PROLACTIN ; RHYTHMS ; MILK ; DIHYDROTESTOSTERONE
英文摘要

Irregular meals (mainly the skipping of breakfast) and inadequate sleep has become prevalent in young people. However, there has been inadequate attention on the adverse effects of this nocturnal life. We observed the 24-hr patterns of sex hormones and other relative hormones in ten medical students, with the randomized cross-over design, on either a diurnal life or a nocturnal life. The subjects on a diurnal life ate three meals (07:00, 13:00 and 19:00) and slept from 22:30 to 06:30. Nocturnal life was designed by skipping their breakfast but consuming a lot (> 50% of their daily food intake) in the evening and at night, sleeping from 01:30 to 08:30 the next morning. After three weeks in the experimental life, the 24-hr plasma concentrations of testosterone, free testosterone, dihydrotestosterone (DHT), androstenedione, prolactin, estrone, luteinizing hormone, cortisol and sex hormone binding globulin (SHBG) were measured every three hours. Plasma free testosterone and prolactin decreased, but cortisol increased when subjects followed the nocturnal life. In the diurnal lifestyle group, circadian rhythms were observed in the androgens (testosterone, free testosterone, DHT, androstenedione), prolactin, cortisol and SHBG in the cosinor analysis; however, circadian rhythms were almost extinguished in the nocturnal lifestyle group. Since sex hormones play important roles in the normal physiological condition, the effects of these changes in hormone concentration and its circadian rhythm should be considered and studied intensively.

语种英语
WOS记录号WOS:000226988700005
引用统计
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/54473
专题北京大学公共卫生学院
作者单位1.Univ Yamanashi, Sch Med, Dept Obstet & Gynecol, Yamanashi 4093898, Japan
2.Univ Yamanashi, Sch Med, Dept Environm Hlth, Yamanashi 4093898, Japan
3.Peking Univ, Sch Publ Hlth, Dept Social Med & Hlth Educ, Beijing 100083, Peoples R China
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GB/T 7714
Qin, LQ,Kaneko, T,Li, J,et al. The effects of nocturnal life on the circadian patterns of sex hormones in young healthy men[J]. JOURNAL OF HEALTH SCIENCE,2005,51(1):33-40.
APA Qin, LQ.,Kaneko, T.,Li, J.,Wang, PY.,Xu, JY.,...&Hoshi, K.(2005).The effects of nocturnal life on the circadian patterns of sex hormones in young healthy men.JOURNAL OF HEALTH SCIENCE,51(1),33-40.
MLA Qin, LQ,et al."The effects of nocturnal life on the circadian patterns of sex hormones in young healthy men".JOURNAL OF HEALTH SCIENCE 51.1(2005):33-40.
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