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J A Tamblyn Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
Birmingham Women’s Foundation Hospital, Edgbaston, Birmingham, UK
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK

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C Jenkinson Birmingham Women’s Foundation Hospital, Edgbaston, Birmingham, UK

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D P Larner Birmingham Women’s Foundation Hospital, Edgbaston, Birmingham, UK

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M Hewison Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK

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M D Kilby Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
Birmingham Women’s Foundation Hospital, Edgbaston, Birmingham, UK
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK

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.01.049 ) 10.1016/j.jchromb.2016.01.049 40 Ogawa S Ooki S Shinoda K Higashi T. Analysis of urinary vitamin D(3) metabolites by liquid chromatography/tandem mass spectrometry with ESI-enhancing and stable isotope-coded derivatization . Analytical and

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-17-0308
Volume/Issue:
Volume 7: Issue 1
Open access
Riccardo Pofi Department of Endocrinology, Oxford Centre for Diabetes, Endocrinology and Metabolism and NIHR Oxford Biomedical Research Centre, Churchill Hospital, University of Oxford, Oxford, UK

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Ilaria Bonaventura Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena, Rome, Italy

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Joanne Duffy Department of Clinical Chemistry and Immunology, Heartlands Hospital, Birmingham, UK

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Zoe Maunsell Department of Clinical Biochemistry, Oxford University Hospitals NHS Foundation Trust, Oxford, UK

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Brian Shine Department of Clinical Biochemistry, Oxford University Hospitals NHS Foundation Trust, Oxford, UK

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Andrea M Isidori Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena, Rome, Italy

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Jeremy W Tomlinson Department of Endocrinology, Oxford Centre for Diabetes, Endocrinology and Metabolism and NIHR Oxford Biomedical Research Centre, Churchill Hospital, University of Oxford, Oxford, UK

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–liquid extraction by isotope dilution liquid chromatography-tandem mass spectrometry. Deuterated internal standard (Fludrocortisone D5, Sigma) was added to each sample, QC and calibrator followed by diethylether. Samples were mixed and then placed into an ethanol

Article Type:
Research Article
Collections:
Adrenal
DOI:
https://doi.org/10.1530/EC-23-0059
Volume/Issue:
Volume 12: Issue 9
Open access
Feifei Shao Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, Gansu, China
Clinical Research Center for Metabolic Disease, Gansu Province, Lanzhou, Gansu, China
The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu, China

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Xinxin Hu Clinical Research Center for Metabolic Disease, Gansu Province, Lanzhou, Gansu, China
The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu, China

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Jiayu Li Clinical Research Center for Metabolic Disease, Gansu Province, Lanzhou, Gansu, China
The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu, China

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Bona Bai Clinical Research Center for Metabolic Disease, Gansu Province, Lanzhou, Gansu, China
The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu, China

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Limin Tian Department of Endocrinology, Gansu Provincial Hospital, Lanzhou, Gansu, China
Clinical Research Center for Metabolic Disease, Gansu Province, Lanzhou, Gansu, China
The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu, China

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14,000 g for 15 min. The upper layer was collected and dried under a nitrogen atmosphere. Stable isotope-labeled analogs are spiked into the samples as internal standards for quantitation. Quality control (QC) samples were prepared by mixing equal

Article Type:
Research Article
Collections:
Metabolic Syndrome and Diabetes
DOI:
https://doi.org/10.1530/EC-23-0212
Volume/Issue:
Volume 12: Issue 12
Open access
Supitcha Patjamontri Developmental Endocrinology Research Group, University of Glasgow, Royal Hospital for Children, Glasgow, UK
Division of Endocrinology and Metabolism, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand

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Alexander Spiers MRC Centre for Environment and Health, Imperial College London, London, UK
NIHR Health Protection Research Unit on Chemical Radiation Threats and Hazards, Imperial College London, London, UK

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Rachel B Smith MRC Centre for Environment and Health, Imperial College London, London, UK
NIHR Health Protection Research Unit on Chemical Radiation Threats and Hazards, Imperial College London, London, UK
National Institute for Health Research (NIHR) Health Protection Research Unit in Environmental Exposures and Health, Imperial College London, London, UK
Mohn Centre for Children’s Health and Wellbeing, Imperial College London, London, UK

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Chen Shen MRC Centre for Environment and Health, Imperial College London, London, UK
NIHR Health Protection Research Unit on Chemical Radiation Threats and Hazards, Imperial College London, London, UK

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Jo Adaway Department of Clinical Biochemistry, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK

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Brian G Keevil Department of Clinical Biochemistry, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK

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Mireille B Toledano MRC Centre for Environment and Health, Imperial College London, London, UK
NIHR Health Protection Research Unit on Chemical Radiation Threats and Hazards, Imperial College London, London, UK
National Institute for Health Research (NIHR) Health Protection Research Unit in Environmental Exposures and Health, Imperial College London, London, UK
Mohn Centre for Children’s Health and Wellbeing, Imperial College London, London, UK

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S Faisal Ahmed Developmental Endocrinology Research Group, University of Glasgow, Royal Hospital for Children, Glasgow, UK

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preservatives of salivary androgens in the current study, 11-OHA4 and 11-KT showed considerable degradation, with an estimated annual degradation of 21 and 26%, respectively. Although these two steroids have previously been reported to be stable overnight at 4°C

Article Type:
Research Article
Collections:
Adrenal
DOI:
https://doi.org/10.1530/EC-23-0084
Volume/Issue:
Volume 12: Issue 12
Open access
Magdalene K Montgomery Department of Pharmacology, UNSW Medicine, School of Medical Sciences, University of New South Wales, Kensington, Sydney, New South Wales 2052, Australia

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Nigel Turner Department of Pharmacology, UNSW Medicine, School of Medical Sciences, University of New South Wales, Kensington, Sydney, New South Wales 2052, Australia

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highly complex and there is still much to learn in this area. Some potential approaches for closing these gaps in knowledge in future studies include developing methods (e.g. with stable isotope tracers) to assess dynamic changes in mitochondrial function

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-14-0092
Volume/Issue:
Volume 4: Issue 1
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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-ACTH-driven mechanisms. By using stable isotopes, elevated cortisol levels could indeed be attributed to suppressed cortisol metabolism, and, only in patients suffering from hyperinflammation, to a moderately increased cortisol production ( 47 ). The attenuated cortisol

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-19-0318
Volume/Issue:
Volume 8: Issue 8
Open access
Bilal B Mughal CNRS/UMR7221, Muséum National d’Histoire Naturelle, Sorbonne Universités, Paris, France

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Jean-Baptiste Fini CNRS/UMR7221, Muséum National d’Histoire Naturelle, Sorbonne Universités, Paris, France

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Barbara A Demeneix CNRS/UMR7221, Muséum National d’Histoire Naturelle, Sorbonne Universités, Paris, France

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. Surfactants are compounds that lower the surface tension between two liquids or between a liquid and a solid and therefore are used in detergents, wetting agents, emulsifiers, foaming agents, and dispersants. They are also highly stable and therefore extremely

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-18-0029
Volume/Issue:
Volume 7: Issue 4
Open access