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Wolfgang Koechling Ferring Pharmaceuticals A/S, Copenhagen, Denmark

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Daniel Plaksin Bio-Technology General Israel Ltd, Ferring Pharmaceuticals, Kiryat Malachi, Israel

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Glenn E Croston Croston Consulting, San Diego, California, USA

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Janni V Jeppesen The Laboratory of Reproductive Biology, The Department of Fertility at The Juliane Marie Centre, Rigshospitalet, Copenhagen University Hospital and The University of Copenhagen, Copenhagen, Denmark

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Kirsten T Macklon The Laboratory of Reproductive Biology, The Department of Fertility at The Juliane Marie Centre, Rigshospitalet, Copenhagen University Hospital and The University of Copenhagen, Copenhagen, Denmark

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Claus Yding Andersen The Laboratory of Reproductive Biology, The Department of Fertility at The Juliane Marie Centre, Rigshospitalet, Copenhagen University Hospital and The University of Copenhagen, Copenhagen, Denmark

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women undergoing in vitro fertilization/intracytoplasmic sperm injection . Fertility and Sterility 2014 102 1633 – 1640 . ( doi:10.1016/j.fertnstert.2014.08.013 ) 12 Bosch E Nyboe Andersen A Barri P García-Velasco JA de Sutter

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-17-0067
Volume/Issue:
Volume 6: Issue 5
Open access
Simon Chang Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
Department of Clinical Biochemistry, Hospital of South West Jutland, Esbjerg, Denmark
Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Internal Medicine, Lillebaelt Hospital, Kolding, Denmark

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Arkadiusz J Goszczak NanoSYD, The Mads Clausen Institute, University of Southern Denmark, Sønderborg, Denmark

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Anne Skakkebæk Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark

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Jens Fedder Centre of Andrology and Fertility Clinic, Odense University Hospital, Odense, Denmark

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Anders Bojesen Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark

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M Vakur Bor Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
Department of Clinical Biochemistry, Hospital of South West Jutland, Esbjerg, Denmark

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Moniek P M de Maat Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
Department of Clinical Biochemistry, Hospital of South West Jutland, Esbjerg, Denmark
Department of Haematology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands

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Claus H Gravholt Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark

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Anna-Marie B Münster Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
Department of Clinical Biochemistry, Hospital of South West Jutland, Esbjerg, Denmark

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testosterone treatment or on active treatment with testosterone, while none of the controls had any history of testosterone treatment. Participants were included from endocrinology and fertility clinics across Denmark and by public advertising. Exclusion

Article Type:
Research Article
Collections:
Cardiovascular
DOI:
https://doi.org/10.1530/EC-21-0490
Volume/Issue:
Volume 11: Issue 5
Open access
Rosalie Cabry Amiens University, Amiens, Haut-de-France, France

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Philippe Merviel Brest University, Brest, Bretagne, France

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Aicha Madkour Mohammed V University of Rabat, Reproductive Medicine, Rabat, Morocco

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Elodie Lefranc Amiens University, Amiens, Haut-de-France, France

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Florence Scheffler Amiens University, Amiens, Haut-de-France, France

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Rachel Desailloud Amiens University, Amiens, Haut-de-France, France

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Véronique Bach Amiens University, Amiens, Haut-de-France, France

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Moncef Benkhalifa Amiens University, Amiens, Haut-de-France, France

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Introduction Infertility is defined as failure to obtain a clinical pregnancy after 12 months of regular, unprotected sexual intercourse. On average, it affects 8–12% of couples of child-bearing age ( 1 ). A decline in human fertility has

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-20-0135
Volume/Issue:
Volume 9: Issue 6
Open access
Luminita Nicoleta Cima Carol Davila University of Medicine and Pharmacy, Bucharest, Romania

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Anca Colita Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Hematology Department, Fundeni Hospital, Bucharest, Romania

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Simona Fica Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Endocrine Department, Elias Hospital, Bucharest, Romania

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in patients with different types of cancer ( 23 , 24 ). Still, the possible utility of this technique of preserving normal ovarian function and fertility in HSCT recipients has not yet been established ( 25 ). Methods This is a literature

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-17-0246
Volume/Issue:
Volume 6: Issue 8
Open access
Hans Valdemar López Krabbe Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Jørgen Holm Petersen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark

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Louise Laub Asserhøj Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Fertility, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark

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Trine Holm Johannsen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Peter Christiansen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Rikke Beck Jensen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark

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Line Hartvig Cleemann Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Casper P Hagen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Lærke Priskorn Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Niels Jørgensen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Katharina M Main Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark

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Anders Juul Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark

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Lise Aksglaede Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Adult patients with Klinefelter syndrome (KS) are characterized by a highly variable phenotype, including tall stature, obesity, and hypergonadotropic hypogonadism, as well as an increased risk of developing insulin resistance, metabolic syndrome, and osteoporosis. Most adults need testosterone replacement therapy (TRT), whereas the use of TRT during puberty has been debated. In this retrospective, observational study, reproductive hormones and whole-body dual-energy x-ray absorptiometry-derived body composition and bone mineral content were standardized to age-related standard deviation scores in 62 patients with KS aged 5.9–20.6 years. Serum concentrations of total testosterone and inhibin B were low, whereas luteinizing hormone and follicle-stimulating hormone were high in patients before TRT. Despite normal body mass index, body fat percentage and the ratio between android fat percentage and gynoid fat percentage were significantly higher in the entire group irrespective of treatment status. In patients evaluated before and during TRT, a tendency toward a more beneficial body composition with a significant reduction in the ratio between android fat percentage and gynoid fat percentage during TRT was found. Bone mineral content (BMC) did not differ from the reference, but BMC corrected for bone area was significantly lower when compared to the reference. This study confirms that patients with KS have an unfavorable body composition and an impaired bone mineral status already during childhood and adolescence. Systematic studies are needed to evaluate whether TRT during puberty will improve these parameters.

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-23-0031
Volume/Issue:
Volume 12: Issue 7
Open access
Christian Trummer Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria

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Stefan Pilz Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria

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Verena Schwetz Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria

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Barbara Obermayer-Pietsch Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria

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Elisabeth Lerchbaum Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria

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, evidence is accumulating that vitamin D deficiency is also a risk marker for insulin resistance ( 3 ), cardiovascular disease ( 4 ), infectious and autoimmune diseases ( 1 ), cancer ( 5 ), increased mortality ( 2 ) as well as decreased fertility ( 6

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-18-0009
Volume/Issue:
Volume 7: Issue 3
Open access
Katica Bajuk Studen Nuclear Medicine Department, University Medical Centre Ljubljana, Ljubljana, Slovenia

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Marija Pfeifer Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia

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-/amenorrhea. Besides the clinical features of hyperandrogenism (hirsutism, acne, male-type baldness), oligo-/amenorrhea and impaired fertility, PCOS patients are often insulin resistant, obese and have metabolic syndrome, with arterial hypertension, dyslipidemia

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-18-0129
Volume/Issue:
Volume 7: Issue 7
Open access
Rossella Cannarella Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy

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Andrea Crafa Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy

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Sandro La Vignera Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy

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Rosita A Condorelli Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy

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Aldo E Calogero Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy

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: puberty onset and progression, testicular volume, gonadotropin, and total testosterone serum levels, sperm parameters and fertility, micropenis. Methods Sources Data used to perform this systematic review were independently extracted by A C and

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-21-0252
Volume/Issue:
Volume 10: Issue 9
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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potentially regulate metabolism (discussed in later sections), and (2) Kiss1 AVPV/PeN neurons to regulate fertility ( 10 , 11 ). An additional population of Kiss1 neurons has been recently identified in the posterodorsal part of the medial amygdala (Kiss1

Article Type:
Review Article
DOI:
https://doi.org/10.1530/EC-20-0068
Volume/Issue:
Volume 9: Issue 5
Open access
Bruno Donadille Service d’Endocrinologie et Médecine de la Reproduction, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Saint Antoine, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France

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Muriel Houang Service d’Explorations Fonctionnelles Endocriniennes, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Trousseau, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France

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Irène Netchine Service d’Explorations Fonctionnelles Endocriniennes, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Trousseau, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France
Université Pierre et Marie Curie, Sorbonne Université, Paris, France

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Jean-Pierre Siffroi Université Pierre et Marie Curie, Sorbonne Université, Paris, France
INSERM UMR_S933, Paris, France

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Sophie Christin-Maitre Service d’Endocrinologie et Médecine de la Reproduction, Centre de Référence des Maladies Endocrines Rares de la Croissance, Hôpital Saint Antoine, Groupe Hospitalier Universitaire Est, AP-HP, Paris, France
Université Pierre et Marie Curie, Sorbonne Université, Paris, France
INSERM UMR_S933, Paris, France

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is metabolised through CYP11B1 activity, the absence of 11OHA4 is in accordance with a complete 3b-HSD deficit ( 22 ). Therefore, testosterone in our patient probably originates from testicular production. Fertility of male patients with HSD3B2

Article Type:
Research Article
DOI:
https://doi.org/10.1530/EC-17-0306
Volume/Issue:
Volume 7: Issue 3
Open access