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Wonsuk Choi Graduate School of Medical Science and Engineering, KAIST, Daejeon, Republic of Korea

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Joon Ho Moon Graduate School of Medical Science and Engineering, KAIST, Daejeon, Republic of Korea

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Hail Kim Graduate School of Medical Science and Engineering, KAIST, Daejeon, Republic of Korea

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transporters (VMAT), with the remaining free 5-HT in portal blood being primarily metabolized in the liver. Thus, >95% of 5-HT is stored in platelets, with free 5-HT levels being low in peripheral blood ( Holmsen 1989 , Richter et al. 1989 , El-Merahbi et

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Rita E Roberts Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, Illinois, USA
Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois, USA
Research and Development Division, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA

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Jacqueline Cavalcante-Silva Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, Illinois, USA
Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois, USA
Research and Development Division, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA

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Rhonda D Kineman Research and Development Division, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA
Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA

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Timothy J Koh Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, Illinois, USA
Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois, USA
Research and Development Division, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA

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wound healing, IGF-1 is present at high levels in the circulation and the liver is the major source of circulating IGF-1 in mice ( Yakar et al. 1999 ). In humans, IGF-1 levels in wounds are correlated with those in blood, suggesting that blood is the

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Gabriel Forn-Cuní Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Monica Varela Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Conrado M Fernández-Rodríguez Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Antonio Figueras Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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Beatriz Novoa Instituto de Investigaciones Marinas, Hospital Universitario Fundación Alcorcón, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain

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diseases are part of a condition termed metabolic syndrome. The hepatic component of metabolic syndrome is non-alcoholic fatty liver disease (NAFLD). This term comprises a wide range of progressive liver injuries including bland steatosis, variable degrees

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S Eleswarapu Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA

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H Jiang Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA

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Introduction Growth hormone (GH) is a pituitary polypeptide hormone that plays a central role in animal growth and metabolism ( Harvey et al. 1995 ). A major target organ of GH is the liver, where GH regulates the expression of

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Ya Liu Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Xiaoqing Zhou Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Ye Xiao Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Changjun Li Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Yan Huang Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Qi Guo Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Tian Su Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Lei Fu Department of Infectious Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Liping Luo Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China

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Introduction Nonalcoholic fatty liver disease (NAFLD), characterized mainly by hepatic steatosis, is the most common liver disease worldwide ( Birkenfeld & Shulman 2014 , Meex & Watt 2017 ). It is reported that NAFLD is closely associated

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Alyce M Martin College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia

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Emily W Sun College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia

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Damien J Keating College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
Nutrition and Metabolism, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia

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pathogenesis of human metabolic disorders. Gut hormone regulation of metabolism The regulation of whole-body metabolism involves the integrated activity of multiple metabolically active tissues, including the GI tract, pancreas, adipose tissue, liver

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Sung-Soo Park Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, South Korea

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Yeon-Joo Lee Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, South Korea

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Sooyeon Song Division of Animal Science, College of Agriculture & Life Science, Chonnam National University, Gwangju, South Korea

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Boyong Kim Gwangju Center, Korea Basic Science Institute, Gwangju, South Korea

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Hyuno Kang Gwangju Center, Korea Basic Science Institute, Gwangju, South Korea

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Sejong Oh Division of Animal Science, College of Agriculture & Life Science, Chonnam National University, Gwangju, South Korea

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Eungseok Kim Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, South Korea

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Introduction Excessive fat accumulation in key metabolic tissues, including the liver and adipose tissue, is closely associated with metabolic disorders such as obesity, insulin resistance, diabetes, nonalcoholic hepatic steatosis

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Tina Seidu Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA

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Patrick McWhorter Department of Chemistry, Youngstown State University, Youngstown, Ohio, USA

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Jessie Myer Department of Biology, University of Missouri, Columbia, Missouri, USA

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Rabita Alamgir Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA

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Nicole Eregha Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA

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Dilip Bogle Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA

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Taylor Lofton Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA

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Carolyn Ecelbarger Department of Medicine, Georgetown University Medical Center, Washington, DC, USA

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Stanley Andrisse Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA
Department of Pediatrics, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA

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triglycerides and free fatty acids (FFA), thus driving lipid accumulation mainly in the liver ( Samuel & Shulman 2016 ). Previous work has shown that low-dose DHT female mice displayed obesity-independent impaired glucose tolerance, insulin resistance, and

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H. ADLERCREUTZ
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CONTENTS

Introduction

Biological inactivation and metabolism of oestrogens in the normal liver of animals

Biological inactivation and metabolism of oestrogens in the damaged liver of animals

Biological inactivation and metabolism of oestrogens in the normal human liver

The role of conjugation of oestrogens in their biological inactivation

Role of the enterohepatic circulation in the biological inactivation and metabolism of oestrogens in human subjects

Oestrogen metabolism in human subjects with liver disease

Studies in vitro

Studies on urinary excretion of oestrogens using biological and chemical methods

Studies on the biological effects of oestrogens on the vaginal smear and urinary sediment in liver disease

Studies on the mechanism leading to increased oestrogen excretion and to symptoms of increased oestrogen activity in the organism

The relation of the disturbed metabolism of oestrogens to the clinical symptoms seen in liver disease

Conclusions

References

INTRODUCTION

The nature of the changes in oestrogen metabolism in liver

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R P Rhoads
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J W Kim
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M E Van Amburgh
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R A Ehrhardt
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S J Frank
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Y R Boisclair
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despite elevated plasma growth hormone (GH; Block et al. 2001 , Rhoads et al. 2004 ). This fall in plasma IGF-I is thought to reflect decreased GH-stimulated IGF-I transcription in liver as a consequence of GH receptor (GHR) loss ( Radcliff et al

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