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adrenal androgens ( 1 ). To address this, clinicians have used a variety of treatment regimens, including the use of a higher dose of glucocorticoid at night in a reverse circadian treatment pattern. A recent comparison, using a higher dose of
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suspected CS was confirmed by the lack of cortisol suppression after 1 mg dexamethasone (10 µg/dL, n.v. <1.8) and the absence of a cortisol circadian rhythm (midnight serum cortisol, MserC, 12 µg/dL; n.v. <7.5). Which clinical features are the
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1223 – 1228 . ( doi:10.1210/jc.2008-2543 ) 10.1210/jc.2008-2543 10 Sherman B Wysham C Pfohl B. Age-related changes in the circadian rhythm of plasma cortisol in man . Journal of Clinical Endocrinology and Metabolism 1985 61 439
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Center for Healthy Aging, Universitätsklinikum Dresden, Technische Universität Dresden, Dresden, Germany
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receptor in retinal ganglion cells instructs the circadian clock of the suprachiasmatic nucleus and suppresses epiphysial melatonin production, as well as melanophore activation in the skin. This special series on 100 Years of Vitamin D, published in
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
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Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
Department of Nursing Physiotherapy and Medicine, SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
Biomedical Research Unit, Torrecárdenas University Hospital, Almería, Spain
CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Granada, Spain
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Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
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characteristics of this cohort has been extensively described elsewhere ( 12 ). To study the influence of circadian rhythm on cold-induced changes in serum GDF15 and FGF21 levels, a general linear model with repeated measures was used, with two within
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Akhisaroglu M Ahmed R Manev H . The pineal gland is critical for circadian Period1 expression in the striatum and for circadian cocaine sensitization in mice . Neuropsychopharmacology 2003 28 2117 – 2123 . 174 Akhisaroglu M Ahmed R Kurtuncu
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the circadian rhythms of behaviour that persist in constant darkness. In lesioned hamsters, circadian rhythmicity can be restored by transplanting fragments of neonatal suprachiasmatic nucleus into the third ventricle – and, remarkably, can do so even
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receptor is involved in the regulation of normal rhythmic activity of the circadian clock, basal energy expenditure, immune response as well as male reproductive functions (1, 3, 32, 33, 34, 35, 36, 37) . In addition, it has been shown that copy number
Wildlife Reproductive Centre, School of Life and Environmental Sciences, School of Agriculture and Food Sciences, Taronga Conservation Society Australia, Dubbo, New South Wales, Australia
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Wildlife Reproductive Centre, School of Life and Environmental Sciences, School of Agriculture and Food Sciences, Taronga Conservation Society Australia, Dubbo, New South Wales, Australia
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) , humans (38) , pandas (39) , and sheep (40) ). The most detailed studies have been conducted in rats, and have shown that this increase is not due to overall upregulation of adrenal activity, but is due to a change in the amplitude of the circadian
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number of diabetes complications ( 19 ). Cortisol secretion follows a circadian rhythm with a nadir at midnight, starts to rise at 02:00–04:00 h, displays a peak briefly after waking up and then shows a progressive decrease during the day ( 20 ). The