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Nikolaos Nikolaou Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK

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Anastasia Arvaniti Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK
Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK

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Nathan Appanna Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK

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Anna Sharp Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK

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Beverly A Hughes Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston, Birmingham, UK

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Dena Digweed Diurnal Ltd, Cardiff, UK

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Martin J Whitaker Diurnal Ltd, Cardiff, UK

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Richard Ross Department of Oncology and Metabolism, Faculty of Medicine, Dentistry and Health, University of Sheffield, Sheffield, UK

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Wiebke Arlt Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston, Birmingham, UK
NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham, UK

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Trevor M Penning Department of Systems Pharmacology & Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA

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Karen Morris Biochemistry Department, Manchester University NHS Trust, Manchester, UK

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Sherly George Biochemistry Department, Manchester University NHS Trust, Manchester, UK

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Brian G Keevil Biochemistry Department, Manchester University NHS Trust, Manchester, UK

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Leanne Hodson Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK

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Laura L Gathercole Oxford Centre for Diabetes, Endocrinology and Metabolism, NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK
Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK

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

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Introduction Glucocorticoids (GCs) are steroid hormones that are released in response to stress and play a crucial role in inflammation and in carbohydrate, lipid and protein metabolism. Within key metabolic target tissues, notably the liver

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Hiroto Kobayashi Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan

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Saori Yoshida Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan

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Ying-Jie Sun Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan

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Nobuyuki Shirasawa Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan

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Akira Naito Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan

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& Armstrong 1995 ). Among liver disease, cirrhosis, pylemphraxis, and biliary atresia, there is an increase in the serum estrogen levels in males; however, the origin of serum estrogens is unknown. In recent years, Ueyama et al . (2002 , 2004 ) reported the

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Ling He Division of Metabolism, Division of Endocrinology, Kennedy Krieger Institute, Departments of Pediatrics, Physiology and Medicine, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA

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Shumei Meng Division of Metabolism, Division of Endocrinology, Kennedy Krieger Institute, Departments of Pediatrics, Physiology and Medicine, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA

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Emily L Germain-Lee Division of Metabolism, Division of Endocrinology, Kennedy Krieger Institute, Departments of Pediatrics, Physiology and Medicine, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA
Division of Metabolism, Division of Endocrinology, Kennedy Krieger Institute, Departments of Pediatrics, Physiology and Medicine, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA

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Sally Radovick Division of Metabolism, Division of Endocrinology, Kennedy Krieger Institute, Departments of Pediatrics, Physiology and Medicine, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA

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Fredric E Wondisford Division of Metabolism, Division of Endocrinology, Kennedy Krieger Institute, Departments of Pediatrics, Physiology and Medicine, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA

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diabetic patients treated with metformin exhibit a reduction in cancer incidence ( Evans et al . 2005 , Libby et al . 2009 , Landman et al . 2010 ). The main effect of metformin is to suppress glucose production in the liver ( Hundal et al . 2002

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María E Díaz
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Johanna G Miquet
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Soledad P Rossi Departamento de Química Biológica, Instituto de Biología y Medicina Experimental, Facultad de Farmacia y Bioquímica, Instituto de Química y Fisicoquímica Biológicas (UBA‐CONICET), Universidad de Buenos Aires, Junín 956, 1113 Ciudad de Buenos Aires, Argentina

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Pablo E Irene
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Ana I Sotelo
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Mónica B Frungieri Departamento de Química Biológica, Instituto de Biología y Medicina Experimental, Facultad de Farmacia y Bioquímica, Instituto de Química y Fisicoquímica Biológicas (UBA‐CONICET), Universidad de Buenos Aires, Junín 956, 1113 Ciudad de Buenos Aires, Argentina

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Daniel Turyn
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Lorena González
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indicates that GH concentration patterns regulate epidermal growth factor receptor (EGFR) expression in rodent liver. The EGFR, also known as ERBB1, is a plasma membrane glycoprotein which belongs to the ERBB family of receptor tyrosine kinases ( Burgess

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Elisabete A Forsberg The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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Ileana R Botusan The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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Jing Wang The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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Verena Peters The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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Ishrath Ansurudeen The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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Kerstin Brismar The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden
The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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Sergiu Bogdan Catrina The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden
The Rolf Luft Research Center for Diabetes and Endocrinology, Department of Endocrinology, Center for Pediatric and Adolescent Medicine, Karolinska Institutet, Stockholm, Sweden

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enhancing or damping IGF activity. IGFBP1 is expressed in the liver, kidney and decidua ( Rajaram et al . 1997 ). The liver is the major source for the circulating IGFBP1 and its synthesis is centrally regulated by insulin that represses IGFBP1 at the

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Sandra Pereira Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Anu Shah Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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I George Fantus Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Jamie W Joseph Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Adria Giacca Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, Department of Medicine, Toronto General Research Institute, Banting and Best Diabetes Centre, Institute of Medical Science, School of Pharmacy, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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characterized by oxidative stress at the tissue level. In the liver, it has been reported that the levels of malondialdehyde (MDA), a marker of lipid peroxidation, and protein carbonyl content are elevated ( Carmiel-Haggai et al . 2005 , Satapati et al . 2012

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Anjara Rabearivony School of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China

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Huan Li School of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China

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Shiyao Zhang School of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China

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Siyu Chen School of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China

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Xiaofei An Department of Endocrinology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China

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Chang Liu School of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China

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). Given the importance of clock machinery, almost all the central and peripheral organs/tissues, such as the liver, possess an intact and functional clock system. It has been demonstrated that the key genes involved in hepatic principal functions

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Sandra Pereira Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Wen Qin Yu Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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María E Frigolet Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Jacqueline L Beaudry Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Yaniv Shpilberg Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Edward Park Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Cristina Dirlea Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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B L Grégoire Nyomba Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Michael C Riddell Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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I George Fantus Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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Adria Giacca Department of Physiology, University of Toronto, Department of Medicine, Mount Sinai Hospital, Toronto General Research Institute and Banting and Best Diabetes Centre, University Health Network, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, Faculty of Health, School of Kinesiology and Health Science, York University, Department of Internal Medicine, University of Manitoba, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8

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animals. At the end of the clamp, rats were anesthetized, the liver was freeze-clamped with pre-cooled aluminum tongs, and the soleus muscle was collected. Tissues were stored at −80 °C. The tissue determinations have a lower n than the glucose kinetics

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Aline Cordeiro Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Avenida Carlos Chagas Filho, 373, Bloco G, Cidade Universitária - Ilha do Fundão, Rio de Janeiro - RJ 21941-902, Brazil

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Luana Lopes Souza Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Avenida Carlos Chagas Filho, 373, Bloco G, Cidade Universitária - Ilha do Fundão, Rio de Janeiro - RJ 21941-902, Brazil

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Marcelo Einicker-Lamas Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Avenida Carlos Chagas Filho, 373, Bloco G, Cidade Universitária - Ilha do Fundão, Rio de Janeiro - RJ 21941-902, Brazil

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Carmen Cabanelas Pazos-Moura Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Centro de Ciências da Saúde, Avenida Carlos Chagas Filho, 373, Bloco G, Cidade Universitária - Ilha do Fundão, Rio de Janeiro - RJ 21941-902, Brazil

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. 2000 ). The liver is the major site for cholesterol and triglyceride metabolism, and thyroid hormones play an important role in hepatic lipid homoeostasis ( Malik & Hodgson 2002 ). Cholesterol is an essential constituent of most biological membranes and

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Richard A Ehrhardt Departments of Animal Science and Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, USA

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Andreas Foskolos Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, UK

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Sarah L Giesy Department of Animal Science, Cornell University, Ithaca, New York, USA

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Stephanie R Wesolowski University of Colorado School of Medicine, Aurora, Colorado, USA

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Christopher S Krumm Department of Animal Science, Cornell University, Ithaca, New York, USA

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W Ronald Butler Department of Animal Science, Cornell University, Ithaca, New York, USA

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Susan M Quirk Department of Animal Science, Cornell University, Ithaca, New York, USA

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Matthew R Waldron Department of Animal Science, Cornell University, Ithaca, New York, USA

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Yves R Boisclair Department of Animal Science, Cornell University, Ithaca, New York, USA

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. Specifically, the hypoinsulinemia of early lactation causes loss of the liver GH receptor and reduced hepatic IGF1 production ( Rhoads et al . 2004 , Wook Kim et al . 2004 ). As a consequence of the reduced IGF1 feedback, plasma GH increases, promoting

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