Melatonin day-night rhythms in subjects with Turner Syndrome
نویسندگان
چکیده
منابع مشابه
Day and Night: Circadian Rhythms in Worms
Most organisms seem to show ‘‘circadian rhythms’’—cycles of behaviour or gene expression that repeat roughly every 24 hours. Such cycles represent an internal circadian clock that can be ‘‘entrained,’’ or synchronized, to a regular light/dark or temperature cycle, and will then continue to cycle in the absence of the light or temperature stimulus. In the nematode worm Caenorhabditis elegans, ho...
متن کاملMelatonin rhythms in delayed sleep phase syndrome.
The aim of this study was to compare circadian and sleep characteristics between patients with delayed sleep phase syndrome (DSPS) and healthy controls. The authors studied 8 DSPS patients and 15 normal controls. Serum melatonin concentration was assessed every hour for 24 h under dim light conditions. The sleep phase and the melatonin rhythm in DSPS patients were significantly delayed compared...
متن کاملDextrocardia and Hiatal Hernia in a Patient with Turner Syndrome
Turner syndrome is a sex-chromosome disorder occurring in one out of 2500 female births and characterized by growth retardation, gonadal dysgenesis and cardiovascular anomalies. The 45, XO karyotype is the most frequent type of this disease. Herein, we report on a 6-year-old girl with Turner syndrome and 45, XO karyotype presenting with short stature. She had dextrocardia and hiatal hernia. To ...
متن کاملPalatine ridges and tongue position in Turner syndrome subjects.
Females with Turner syndrome (TS), X chromosome monosomy, are characterized with palates that are narrow in width, normal in height and which are commonly associated with the presence of lateral palatine ridges. The aim of the present study was to assess the relationship of tongue position, palatal dimensions, and the presence of the lateral palatine ridges in TS subjects. The study also aimed ...
متن کاملMelatonin phase shifts human circadian rhythms in a placebo-controlled simulated night-work study.
There has been scant evidence for a phase-shifting effect of melatonin in shift-work or jet-lag protocols. This study tested whether melatonin can facilitate phase shifts in a simulated night-work protocol. Subjects (n = 32) slept in the afternoons/evenings before night work (a 7-h advance of the sleep schedule). They took melatonin (0.5 mg or 3.0 mg) or placebo before the first four of eight a...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1984
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-198411000-00157