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Robert I Menzies The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Xin Zhao The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Linda J Mullins The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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John J Mullins The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Carolynn Cairns The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Nicola Wrobel The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Donald R Dunbar The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Matthew A Bailey The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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Christopher J Kenyon The University/BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen’s Medical Research Institute, Edinburgh, UK

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this treatment that suggest it represents a model of ACTH-dependent Cushings. These responses include raised urinary corticosterone to levels which are outwith normal circadian rhythms, thymic involution, hypertension and fluid and electrolyte imbalance

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-17-0092
Volume/Issue:
Volume 6: Issue 7
Open access
Antonia Ertelt Equine Clinic, Free University of Berlin, Berlin, Germany

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Ann-Kristin Barton Equine Clinic, Free University of Berlin, Berlin, Germany

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Robert R Schmitz Equine Clinic, Free University of Berlin, Berlin, Germany

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Heidrun Gehlen Equine Clinic, Free University of Berlin, Berlin, Germany

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signals. As the secretion capacity of leptin differs within different fat depots depending on the age, gender, and circadian rhythm, the likelihood that leptin represents a true ponderostat signal is low (79, 80, 81, 82) . Recent studies have demonstrated

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-14-0038
Volume/Issue:
Volume 3: Issue 3
Open access
Britt J van Keulen Emma Children’s Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Pediatric Endocrinology, Amsterdam, The Netherlands

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Conor V Dolan Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands

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Bibian van der Voorn Department of Pediatric Endocrinology, Sophia Kinderziekenhuis, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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Ruth Andrew Centre for Cardiovascular Science, University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, UK

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Brian R Walker Centre for Cardiovascular Science, University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, UK
Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK

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Hilleke Hulshoff Pol Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands

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Dorret I Boomsma Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands

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Joost Rotteveel Emma Children’s Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Pediatric Endocrinology, Amsterdam, The Netherlands

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Martijn J J Finken Emma Children’s Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Pediatric Endocrinology, Amsterdam, The Netherlands

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acknowledged. Enzymatic activities were estimated by ratios of metabolites in morning urine, which estimate activity only globally. Since cortisol is secreted in a circadian rhythm, a 24-h-urine sample would have been preferred. In addition, both short- and

Article Type:
Research Article
Collections:
Paediatric Endocrinology Collection
DOI:
https://doi.org/10.1530/EC-20-0123
Volume/Issue:
Volume 9: Issue 6
Open access
Guido Zavatta Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy

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Bart L Clarke Mayo Clinic, Rochester, Minnesota, USA

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pulses is increased by acute reductions of ionized calcium, with a return to equilibrium about 2 h following a PTH pulse ( 10 ). A circadian rhythm of PTH has also been described, with a pronounced peak in the early morning, a nadir in the late morning

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-20-0366
Volume/Issue:
Volume 9: Issue 10
Open access
Aleksandra Gilis-Januszewska Chair and Department of Endocrinology, Jagiellonian University Medical College, Krakow, Poland
Endocrinology Department, University Hospital in Krakow, Krakow, Poland

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Łukasz Kluczyński Chair and Department of Endocrinology, Jagiellonian University Medical College, Krakow, Poland
Endocrinology Department, University Hospital in Krakow, Krakow, Poland

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Alicja Hubalewska-Dydejczyk Chair and Department of Endocrinology, Jagiellonian University Medical College, Krakow, Poland
Endocrinology Department, University Hospital in Krakow, Krakow, Poland

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circumference, and increased abdominal fat and leptin values ( 76 , 91 ). The probable mechanisms beyond weight gain in patients with PTHP include altered function of hypothalamic nuclei, which control energy homeostasis, changes in circadian rhythms, mood

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-20-0117
Volume/Issue:
Volume 9: Issue 5
Open access
Thabiso R P Mofokeng Department of Medicine, University of the Free State, Bloemfontein, South Africa

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Salem A Beshyah Department of Medicine, Dubai Medical College, Duabi, United Arab Emirates
Department of Endocrinology, Mediclinic Airport Road Hospital, Abu Dhabi, United Arab Emirates

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Fazleh Mahomed Department of Medicine, University of the Free State, Bloemfontein, South Africa

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Kwazi C Z Ndlovu Department of Medicine, University of the Free State, Bloemfontein, South Africa

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Ian L Ross Division of Endocrinology, Department of Medicine, University of Cape Town, Cape Town, South Africa

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circadian rhythm through chronotherapy ( 46 ) hold the future promise of reduction of the observed side-effects. A significant proportion of PAI in SSA was suggested as being secondary to underlying AIDS and tuberculosis, whereas in the MENA region these

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-20-0129
Volume/Issue:
Volume 9: Issue 5
Open access
Lára Ósk Eggertsdóttir Claessen Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
Department of Emergency Medicine, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland

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Hafrún Kristjánsdóttir Physical Activity, Physical Education, Sport, and Health (PAPESH) Research Centre, Sports Science Department, School of Social Sciences, Reykjavik University, Reykjavik, Iceland

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María Kristín Jónsdóttir Mental Health Services, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland
Department of Psychology, School of Social Sciences, Reykjavik University, Reykjavik, Iceland

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Sigrún Helga Lund deCODE Genetics, Inc/Amgen Inc., Reykjavik, Iceland
School of Engineering and Natural Sciences, University of Iceland, Reykjavik, Iceland

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Ingunn Unnsteinsdóttir Kristensen Department of Psychology, School of Social Sciences, Reykjavik University, Reykjavik, Iceland

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Helga Ágústa Sigurjónsdóttir Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
Department of Medicine, Landspitali – The National University Hospital of Iceland, Reykjavik, Iceland

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of s-cortisol and the high-dose (250 µg) synachten test were performed at 08:00 h, it is possible that variations in individual circadian rhythms could have resulted in false-negative results. Moreover, the use of the synacthen test rather than the

Article Type:
Research Article
Collections:
Pituitary and Hypothalamus
DOI:
https://doi.org/10.1530/EC-23-0363
Volume/Issue:
Volume 13: Issue 2
Open access
Marcus Imamovic Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden

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Nils Bäcklund Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden

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Staffan Lundstedt Department of Medical Biosciences, Umeå University, Umeå, Sweden

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Göran Brattsand Department of Medical Biosciences, Umeå University, Umeå, Sweden

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Elisabeth Aardal Department of Clinical Chemistry and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden

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Tommy Olsson Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden

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Per Dahlqvist Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden

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; problems with the oral mucosa or saliva; current pregnancy; abnormal circadian rhythm (not sleeping at night between 00:30 and 05:00 h). The study was approved by the local ethics committee in Umeå (Dnr 2018-162-31M). Written informed consent was obtained

Article Type:
Research Article
Collections:
Adrenal
DOI:
https://doi.org/10.1530/EC-22-0324
Volume/Issue:
Volume 12: Issue 1
Open access
Sophie-Charlotte Drogge Institute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany

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Mirjam Frank Institute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany

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Carolin Girschik Institute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany

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Karl-Heinz Jöckel Institute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany

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Dagmar Führer-Sakel Department of Endocrinology, Diabetes and Metabolism, University Hospital Essen, University of Duisburg-Essen, Essen, Germany

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Börge Schmidt Institute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany

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statistical power for single SNP analyses. Further, time at blood sampling was not standardised, but the secretion of TSH is related to a circadian rhythm showing higher values in the morning and a decrease at noon ( 62 ). Conclusion To our knowledge

Article Type:
Research Article
Collections:
Thyroid
DOI:
https://doi.org/10.1530/EC-22-0127
Volume/Issue:
Volume 12: Issue 2
Open access
Deirdre Green Academic Department of Endocrinology, Beaumont Hospital and the Royal College of Surgeons in Ireland, Dublin

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Rosemary Dineen Academic Department of Endocrinology, Beaumont Hospital and the Royal College of Surgeons in Ireland, Dublin

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Michael W O’Reilly Academic Department of Endocrinology, Beaumont Hospital and the Royal College of Surgeons in Ireland, Dublin

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Mark Sherlock Academic Department of Endocrinology, Beaumont Hospital and the Royal College of Surgeons in Ireland, Dublin

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the form of immediate-release hydrocortisone fails to replicate the physiological cortisol circadian rhythm, and together with the uncertainties of GC dose adjustment and the absence of reliable biomarkers, patients receiving GC therapy may be over- or

Article Type:
Review Article
Collections:
Adrenal
DOI:
https://doi.org/10.1530/EC-23-0088
Volume/Issue:
Volume 13: Issue 2
Open access