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Mieke Van Hemelrijck
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Thurkaa Shanmugalingam
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Cecilia Bosco
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Wahyu Wulaningsih
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Sabine Rohrmann Cancer Epidemiology Group, Division of Chronic Disease Epidemiology, Division of Cancer Studies, King's College London, London, UK

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Introduction Both insulin-like growth factor 1 (IGF1) and calcium metabolisms have been linked to chronic diseases such as cardiovascular disease and cancer (1, 2, 3, 4) . IGF1 is a polypeptide hormone implicated in cell differentiation

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Chanyang Kim Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Korea

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Seungjoon Park Department of Pharmacology and Medical Research Center for Bioreaction to ROS and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul, Korea

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mitochondrial dysfunction and oxidative stress-dependent apoptosis induced by MPP + may be promising candidates for neuroprotective agents in PD. Insulin-like growth factor (IGF)-1, a small peptide composed of 70 amino acids, is a well-known neurotrophic and

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Nathalie Ly Department of Endocrinology and Reproductive Medicine, Reference Center for Rare Endocrine Diseases of Growth and Development, Reference Center for Gynecological Rare Diseases, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
EndoERN, APHP Consortium Pitie Salpetriere Hospital, Necker Hospital, Paris, France

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Sophie Dubreuil Department of Endocrinology and Reproductive Medicine, Reference Center for Rare Endocrine Diseases of Growth and Development, Reference Center for Gynecological Rare Diseases, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
EndoERN, APHP Consortium Pitie Salpetriere Hospital, Necker Hospital, Paris, France

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Philippe Touraine Department of Endocrinology and Reproductive Medicine, Reference Center for Rare Endocrine Diseases of Growth and Development, Reference Center for Gynecological Rare Diseases, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
EndoERN, APHP Consortium Pitie Salpetriere Hospital, Necker Hospital, Paris, France
Sorbonne University, Paris, France

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( 1 ). IGF-1 concentration is routinely used to assess both treatment’s efficacy and patient’s adherence when treated with GH replacement therapy (GHRT). The paramount importance of the GH–IGF axis on bone growth during childhood is well documented, as

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K L Gatford School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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G K Heinemann School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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S D Thompson School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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J V Zhang School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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S Buckberry School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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J A Owens School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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G A Dekker School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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C T Roberts School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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on behalf of the SCOPE Consortium School of Paediatrics and Reproductive Health, Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia

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Introduction The insulin-like growth factors (IGFs), IGF1 and IGF2, are important regulators of placental and foetal development, as well as postnatal growth and metabolism. In humans, circulating IGF1 peaks in adolescence and then falls with age

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P R van Dijk Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands

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S J J Logtenberg Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands

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K H Groenier Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands

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N Kleefstra Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands

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H J G Bilo Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands

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H J Arnqvist Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands
Diabetes Centre, Departments of Internal Medicine, General Practice, Langerhans Medical Research Group, Department of Internal Medicine, Division of Cell Biology, Faculty of Health Sciences, Isala Clinics, PO Box 10400, 8000 G.K. Zwolle, The Netherlands

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Introduction Insulin and insulin-like growth factor 1 (IGF1) are structurally and functionally closely related peptides. IGF1, mainly synthesized in the liver after stimulation of the GH receptor, plays a central role in cell metabolism and growth

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A J Varewijck Erasmus MC, Department of Internal Medicine, Division of Endocrinology, 's-Gravendijkwal 230, Room D-443, 3015 CE Rotterdam, The Netherlands

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A J van der Lely Erasmus MC, Department of Internal Medicine, Division of Endocrinology, 's-Gravendijkwal 230, Room D-443, 3015 CE Rotterdam, The Netherlands

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S J C M M Neggers Erasmus MC, Department of Internal Medicine, Division of Endocrinology, 's-Gravendijkwal 230, Room D-443, 3015 CE Rotterdam, The Netherlands

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S W J Lamberts Erasmus MC, Department of Internal Medicine, Division of Endocrinology, 's-Gravendijkwal 230, Room D-443, 3015 CE Rotterdam, The Netherlands

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L J Hofland Erasmus MC, Department of Internal Medicine, Division of Endocrinology, 's-Gravendijkwal 230, Room D-443, 3015 CE Rotterdam, The Netherlands

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J A M J L Janssen Erasmus MC, Department of Internal Medicine, Division of Endocrinology, 's-Gravendijkwal 230, Room D-443, 3015 CE Rotterdam, The Netherlands

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Introduction Acromegaly is characterized by excess secretion of growth hormone (GH) causing multisystem-associated morbidities and increased mortality. GH is considered as the main regulator of circulating total insulin-like growth factor 1 (IGF1

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R Solomon-Zemler Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel

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L Basel-Vanagaite Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
Raphael Recanati Genetic Institute, Rabin Medical Center – Beilinson Hospital, Petach Tikva, Israel
Felsenstein Medical Research Center, Petach Tikva, Israel
Pediatric Genetics, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel

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D Steier Day Hospitalization Department, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel

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S Yakar David B. Kriser Dental Center, Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York, USA

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E Mel Jesse Z. and Sara Lea Shafer Institute for Endocrinology and Diabetes, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel

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M Phillip Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
Jesse Z. and Sara Lea Shafer Institute for Endocrinology and Diabetes, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel

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L Bazak Raphael Recanati Genetic Institute, Rabin Medical Center – Beilinson Hospital, Petach Tikva, Israel

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D Bercovich Tel-Hai College, Tel-Hai, Israel

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H Werner Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
Shalom and VardaYoran Institute for Human Genome Research, Tel Aviv University, Tel Aviv, Israel

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L de Vries Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
Jesse Z. and Sara Lea Shafer Institute for Endocrinology and Diabetes, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel

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specific (genetic or other) defect can be recognized. Growth and developmental conditions under the umbrella of congenital insulin-like growth factor-1 ( IGF-1 ) deficiencies include: (i) growth hormone (GH) releasing hormone-receptor ( GHRH-R ) defect

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Louise Færch Department of Cardiology, Department of Growth and Reproduction, Faculty of Health Sciences, Nephrology and Endocrinology H, Hillerød University Hospital, Dyrehavevej 29, DK-3400 Hillerød, Denmark

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Anders Juul Department of Cardiology, Department of Growth and Reproduction, Faculty of Health Sciences, Nephrology and Endocrinology H, Hillerød University Hospital, Dyrehavevej 29, DK-3400 Hillerød, Denmark
Department of Cardiology, Department of Growth and Reproduction, Faculty of Health Sciences, Nephrology and Endocrinology H, Hillerød University Hospital, Dyrehavevej 29, DK-3400 Hillerød, Denmark

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Ulrik Pedersen-Bjergaard Department of Cardiology, Department of Growth and Reproduction, Faculty of Health Sciences, Nephrology and Endocrinology H, Hillerød University Hospital, Dyrehavevej 29, DK-3400 Hillerød, Denmark

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Birger Thorsteinsson Department of Cardiology, Department of Growth and Reproduction, Faculty of Health Sciences, Nephrology and Endocrinology H, Hillerød University Hospital, Dyrehavevej 29, DK-3400 Hillerød, Denmark
Department of Cardiology, Department of Growth and Reproduction, Faculty of Health Sciences, Nephrology and Endocrinology H, Hillerød University Hospital, Dyrehavevej 29, DK-3400 Hillerød, Denmark

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, normal GH secretion is important to avoid progression of hypoglycemic episodes into severe hypoglycemia. GH is reflected by insulin-like growth factor 1 (IGF1), which is used to evaluate the GH axis, because GH has great diurnal variation. Total IGF1 has

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Xu-Ting Song Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Jia-Nan Zhang Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Duo-Wei Zhao Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Yu-Fei Zhai Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Qi Lu Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Mei-Yu Qi Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China

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Ming-Hai Lu Department of Animal Science, Heilongjiang State Farms Science Technology Vocational College, Harbin, China

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Shou-Long Deng CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China

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Hong-Bing Han Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China

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Xiu-Qin Yang Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Yu-Chang Yao Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology

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Introduction Insulin-like growth factor 1 (IGF1), also known as somatomedin C, has remarkable diversity in terms of biological effects. It is widely recognized that IGF1 is essential for the regulation of normal growth ( 1 ), development ( 2

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Anastasia Ibba SSD Endocrinologia Pediatrica e Centro Screening Neonatale, Ospedale Pediatrico Microcitemico, ‘A. Cao’, AO Brotzu, Cagliari, Italy

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Francesca Corrias SSD Endocrinologia Pediatrica e Centro Screening Neonatale, Ospedale Pediatrico Microcitemico, ‘A. Cao’, AO Brotzu, Cagliari, Italy

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Chiara Guzzetti SSD Endocrinologia Pediatrica e Centro Screening Neonatale, Ospedale Pediatrico Microcitemico, ‘A. Cao’, AO Brotzu, Cagliari, Italy

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Letizia Casula SSD Endocrinologia Pediatrica e Centro Screening Neonatale, Ospedale Pediatrico Microcitemico, ‘A. Cao’, AO Brotzu, Cagliari, Italy

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Mariacarolina Salerno Dipartimento di Pediatria, Università Federico II, Napoli, Italy

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Natascia di Iorgi Dipartimento di Pediatria, IRCCS Istituto Giannina Gaslini, Università di Genova, Genova, Italy
Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-infantili, Università di Genova, Genova, Italy

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Gianluca Tornese SSD Endocrinologia Pediatrica, Clinica Pediatrica, IRCCS Materno-infantile Burlo Garofolo, Trieste, Italy

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Giuseppa Patti Dipartimento di Pediatria, IRCCS Istituto Giannina Gaslini, Università di Genova, Genova, Italy
Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-infantili, Università di Genova, Genova, Italy

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Giorgio Radetti Dipartimento di Pediatria, Ospedale Generale Regionale, Bolzano, Italy

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Mohamad Maghnie Dipartimento di Pediatria, IRCCS Istituto Giannina Gaslini, Università di Genova, Genova, Italy
Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-infantili, Università di Genova, Genova, Italy

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Marco Cappa UOC di Endocrinologia, Dipartimento Universitario Ospedaliero, Ospedale Pediatrico Bambino Gesù IRCCS, Roma, Italy

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Sandro Loche SSD Endocrinologia Pediatrica e Centro Screening Neonatale, Ospedale Pediatrico Microcitemico, ‘A. Cao’, AO Brotzu, Cagliari, Italy

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have also shown that the best GH peak cut-off ranges from 5.1 to 6.8 μg/L, depending on the stimulation test ( 13 ). Measurement of IGF1 is also an important step in the diagnostic process ( 10 , 14 ). IGF1 is a small polypeptide hormone, whose

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