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Hershel Raff Division of Endocrinology, Division of Nephrology, Endocrine Research Laboratory, Department of Medicine
Division of Endocrinology, Division of Nephrology, Endocrine Research Laboratory, Department of Medicine
Division of Endocrinology, Division of Nephrology, Endocrine Research Laboratory, Department of Medicine
Division of Endocrinology, Division of Nephrology, Endocrine Research Laboratory, Department of Medicine

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Hariprasad Trivedi Division of Endocrinology, Division of Nephrology, Endocrine Research Laboratory, Department of Medicine

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are significant similarities between the morbidity of Cushing's syndrome and renal failure (8, 9) . Thus, it is important to be able to properly assess the HPA axis in ESRD subjects. The current study was designed to evaluate the circadian rhythm of

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-12-0058
Volume/Issue:
Volume 2: Issue 1
Open access
Shuhui Ma Laboratory of Anatomy of Domestic Animals, College of Animal Medicine, China Agricultural University, Haidian, Beijing, China

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Zixu Wang Laboratory of Anatomy of Domestic Animals, College of Animal Medicine, China Agricultural University, Haidian, Beijing, China

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Jing Cao Laboratory of Anatomy of Domestic Animals, College of Animal Medicine, China Agricultural University, Haidian, Beijing, China

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Yulan Dong Laboratory of Anatomy of Domestic Animals, College of Animal Medicine, China Agricultural University, Haidian, Beijing, China

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Yaoxing Chen Laboratory of Anatomy of Domestic Animals, College of Animal Medicine, China Agricultural University, Haidian, Beijing, China

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the biological clock oscillators, the pineal gland secretes melatonin into the blood with high level during the subjective night and low level during the subjective day ( 2 ) and is a typical model system for the study of circadian rhythm. Melatonin

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-18-0377
Volume/Issue:
Volume 8: Issue 1
Open access
Carlijn A Hoekx Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands

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Borja Martinez-Tellez Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
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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Maaike E Straat Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands

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Magdalena M A Verkleij Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands

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Mirjam Kemmeren Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands

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Sander Kooijman Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands

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Martin Uhrbom Bioscience Metabolism, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca Gothenburg, Sweden
Department of Medicine, Huddinge, Karolinska Institutet Campus Flemingsberg, Neo Building, Huddinge, Sweden

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Saskia C A de Jager Laboratory of Experimental Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands

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Patrick C N Rensen Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands

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Mariëtte R Boon Division of Endocrinology, Department of Medicine, Leiden University Medical Center, Leiden, The Netherlands
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

Article Type:
Research Article
Collections:
Obesity
DOI:
https://doi.org/10.1530/EC-24-0074
Volume/Issue:
Volume 13: Issue 7
Open access
Carlo Cinque Fondazione Ethoikos, Radicondoli, Italy
Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome, Rome, Italy

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Manuela Zinni Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome, Rome, Italy

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Anna Rita Zuena Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome, Rome, Italy

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Chiara Giuli Fondazione Ethoikos, Radicondoli, Italy

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Sebastiano G Alemà Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome, Rome, Italy

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Assia Catalani Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome, Rome, Italy

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Paola Casolini Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome, Rome, Italy

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Roberto Cozzolino Fondazione Ethoikos, Radicondoli, Italy

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that the exposure to EE ( 25 ) or to the odour of a phobic stimulus such as predator scent ( 26 ) induces an increase of plasma corticosterone concentrations in rats. We also assessed FCM circadian rhythm in socially isolated male and female rats in

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-17-0338
Volume/Issue:
Volume 7: Issue 2
Open access
L Bahler Internal Medicine, Academic Medical Center, Amsterdam, The Netherlands

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H J Verberne Nuclear Medicine, Academic Medical Center, Amsterdam, The Netherlands

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E Brakema Internal Medicine, Academic Medical Center, Amsterdam, The Netherlands

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R Tepaske Intensive Care Medicine, Academic Medical Center, Amsterdam, The Netherlands

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J Booij Nuclear Medicine, Academic Medical Center, Amsterdam, The Netherlands

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J B Hoekstra Internal Medicine, Academic Medical Center, Amsterdam, The Netherlands

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F Holleman Internal Medicine, Academic Medical Center, Amsterdam, The Netherlands

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the male Sprague–Dawley rat . Chronobiology International 1993 10 244 – 258 . ( doi:10.1080/07420529309059707 ) 14 Meier AH Cincotta AH. Circadian rhythms regulate the- expression of the thrifty genotype/phenotype . Diabetes Reviews

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-16-0051
Volume/Issue:
Volume 5: Issue 6
Open access
Rajae Talbi Department of Medicine, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA

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Victor M Navarro Department of Medicine, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA

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observed in control mice ( 57 ). This change in the circadian rhythm of feeding correlated with similar changes in physical activity and energy expenditure. These results suggested a critical role for Kiss1 ARC neurons in the regulation of circadian

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-20-0068
Volume/Issue:
Volume 9: Issue 5
Open access
Julie Smith Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark

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Jan Fahrenkrug Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark

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Henrik L Jørgensen Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark

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Christina Christoffersen Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark

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Jens P Goetze Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
Department of Clinical Biochemistry (KB3014), Department of Technology, Department of Clinical Biochemistry, Department of Biomedical Sciences, Department of Clinical Medicine, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark

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regulation of energy metabolism . Nature Reviews. Endocrinology 2014 10 157 – 163 . ( doi:10.1038/nrendo.2013.234 ). 8 Bray MS Young ME . Circadian rhythms in the development of obesity: potential role for the circadian

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-15-0074
Volume/Issue:
Volume 4: Issue 4
Open access
David J F Smith Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Hemanth Prabhudev Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Sirazum Choudhury Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
Department of Clinical Biochemistry, Imperial College Healthcare NHS Trust, London, UK
Department of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Imperial College London, London, UK

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Karim Meeran Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
Department of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Imperial College London, London, UK

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profile with oral medication is a significant challenge because normal cortisol production is pulsatile and consists of a circadian rhythm and an ultradian rhythm ( 3 , 4 , 5 ). Under-replacement may cause lethargy and an increased risk of Addisonian

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-17-0257
Volume/Issue:
Volume 6: Issue 8
Open access
Angelica Sharma Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Katharine Lazarus Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Deborah Papadopoulou Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Hemanth Prabhudev Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Tricia Tan Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
Department of Clinical Biochemistry, North West London Pathology, London, UK

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Karim Meeran Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK

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Sirazum Choudhury Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
Department of Clinical Biochemistry, North West London Pathology, London, UK

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patients take prednisolone as early as possible upon wakening. Other studies are trialling glucocorticoid pump replacement therapy to mimic circadian rhythms; however, there is limited evidence for their use so far ( 24 , 25 ). The importance of pulsatile

Article Type:
Research Article
Collections:
Adrenal
DOI:
https://doi.org/10.1530/EC-23-0097
Volume/Issue:
Volume 12: Issue 8
Open access
Jessica S Jarmasz Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada

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Yan Jin Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada

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Hana Vakili Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA

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Peter A Cattini Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada

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has been heavily studied ( 2 ). Serum levels of hGH vary considerably over the course of the day and during the night as it is dependent on a variety of factors including (and not limited to) the circadian rhythm, sleep–wake cycle, diet, metabolism

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-20-0354
Volume/Issue:
Volume 9: Issue 12
Open access