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  • circadian rhythm x
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Yan-yu Zhang Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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Xian Zhang Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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Shao-yang Bu Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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Wei-wei Zhang Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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Tian-xiu Li Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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De-cai Zheng Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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Ze-xiang Huang Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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Qian Wang Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, China

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the ventral (Hv) ( 22 ). The brain is regarded as the organ where kisspeptin genes primarily act, and the habenula mainly regulates circadian rhythm and stress response ( 23 ). The sexually dimorphic distribution of kiss -positive cells in the brain

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0136
Volume/Issue:
Volume 11: Issue 8
Open access
I M A A van Roessel Department of Pediatric Endocrinology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, The Netherlands

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J P de Graaf Dutch Pituitary Foundation, Nijkerk, The Netherlands
Department of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
Endo-ERN European Reference Network on Rare endocrine conditions

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N R Biermasz Department of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
Endo-ERN European Reference Network on Rare endocrine conditions

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E Charmandari Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, Aghia Sophia Children's Hospital, Athens, Greece
Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece

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H M van Santen Department of Pediatric Endocrinology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, The Netherlands

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detrimental effects on the quality of life. Patients with HD may experience disturbed hunger-satiety and thirst feelings, decreased energy expenditure, behavioral problems, disturbed circadian rhythm, temperature dysregulation and pituitary dysfunction

Article Type:
Research Article
Collections:
Pituitary and Hypothalamus
DOI:
https://doi.org/10.1530/EC-23-0147
Volume/Issue:
Volume 12: Issue 10
Open access
H Vlaardingerbroek Department of Pediatrics, Subdivision of Endocrinology, Erasmus University Medical Center-Sophia Children’s Hospital, Rotterdam, The Netherlands
Willem-Alexander Children’s Hospital, Department of Pediatrics, Division of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands

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E L T van den Akker Department of Pediatrics, Subdivision of Endocrinology, Erasmus University Medical Center-Sophia Children’s Hospital, Rotterdam, The Netherlands

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A C S Hokken-Koelega Department of Pediatrics, Subdivision of Endocrinology, Erasmus University Medical Center-Sophia Children’s Hospital, Rotterdam, The Netherlands

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–night rhythm with increased somnolence and decreased activity during the day. Another contributing factor can be multiple pituitary hormone deficiency, which is often present in these patients, requiring hormone supplementation ( 8 ). Anorexia nervosa

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-21-0111
Volume/Issue:
Volume 10: Issue 5
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
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
Arno Téblick Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium

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Lies Langouche Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium

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Greet Van den Berghe Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium

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gland produce and secrete thyroid-stimulating hormone (TSH) in a dual fashion: a basal secretion with a circadian pattern (nocturnal levels up to a twofold of daytime levels) and pulses approximately every 90 min ( 25 ). TSH binds the G

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-19-0318
Volume/Issue:
Volume 8: Issue 8
Open access