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HPA axis ( McNeilly et al. 2010 ). Two major hepatic glucocorticoid-metabolizing enzymes contribute to HPA tone in this way: 11β-hydroxysteroid dehydrogenase type 1 (HSD11B1) and hepatic 5α-reductase type 1 (SRD5A1). Metabolic transformations
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, which is plausible as 5α-reductase type 1 is the only isozyme expressed in mouse liver ( Mahendroo et al . 1996 , 1997 ) whereas human liver contains both 5α-reductase type 1 and type 2 ( Evans & Goa 2003 ). These data indicate that there may be a risk
Obstetrics and Gynecology, McGill University, 3655 Promenade Sir-William-Osler, Montréal, Québec, Canada H3G 1Y6
Toxicology Research Division, Health Products and Foods Branch, Food Directorate, Health Canada, Ottawa, Ontario, Canada
Reproductive Biology Unit, Departments of Cellular and Molecular Medicine and Obstetrics and Gynecology, University of Ottawa, Sir Frederick G Banting Research Centre, 2202D1 Tunney’s Pasture, Ottawa, Ontario, Canada K1A 0L2
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Obstetrics and Gynecology, McGill University, 3655 Promenade Sir-William-Osler, Montréal, Québec, Canada H3G 1Y6
Toxicology Research Division, Health Products and Foods Branch, Food Directorate, Health Canada, Ottawa, Ontario, Canada
Reproductive Biology Unit, Departments of Cellular and Molecular Medicine and Obstetrics and Gynecology, University of Ottawa, Sir Frederick G Banting Research Centre, 2202D1 Tunney’s Pasture, Ottawa, Ontario, Canada K1A 0L2
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Obstetrics and Gynecology, McGill University, 3655 Promenade Sir-William-Osler, Montréal, Québec, Canada H3G 1Y6
Toxicology Research Division, Health Products and Foods Branch, Food Directorate, Health Canada, Ottawa, Ontario, Canada
Reproductive Biology Unit, Departments of Cellular and Molecular Medicine and Obstetrics and Gynecology, University of Ottawa, Sir Frederick G Banting Research Centre, 2202D1 Tunney’s Pasture, Ottawa, Ontario, Canada K1A 0L2
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of 5α-reductase (type-1 and type-2) are present in the epididymis and are differentially expressed along the tubule ( Viger & Robaire 1996 ). Previously, using gene expression profiling, we have shown that the treatment of adult male rats with
Centre for Integrative Physiology, University of Edinburgh, Edinburgh, UK
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Morgan SA Laverty GG 2013 Loss of 5α-reductase type 1 accelerates the development of hepatic steatosis but protects against hepatocellular carcinoma in male mice . Endocrinology 54 4536 – 4547 . ( doi:10.1210/en.2013-1592 ) Fagman JB
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Introduction The specific short-chain dehydrogenase reductase enzymes known as 5α-reductases (types 1 and 2) are best known for their role in masculinization of the male reproductive tract ( Wilson et al . 1995 ) but are also recognized to
Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
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Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
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Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, Turku, Finland
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described are 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) and the 5α-reductases type 1 and 2 (5αR1 and 2). 11β-HSD1 converts the inactive glucocorticoid cortisone to its active form cortisol, and 11β-Hsd1 –/– mice have a beneficial metabolic phenotype
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, 12, 40, 82 Breast H✓ H✓ H✓ H✓ H✓; R✓; M✓ 50, 34, 1, 85, 75 5αR1, 5α reductase type 1; 5αR2, 5α reductase type 2; H, human; R, rat; M, mouse; ✓, present; ×, absent; ±, very low levels; IC, either immunocytochemistry or immunohistochemistry; G, gamma
Departments of Pathology, Dermatology, Biological Science Laboratories, Departments of Dermatology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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gift from Dr Ian Mason at the University of Edinburgh, Edinburgh), 5α-reductase type 1 (5α-red1) (a gift from Dr D W Russell at the University of Texas Southwestern Medical Center, Dallas), and epithelial membrane antigen (EMA) (Dako). Each primary
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NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham, UK
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the 5α-reductases (type 1 and 2) are well established ( Morgan et al. 2014 , Nasiri et al. 2015 ). We have recently shown that 5β-reductase (AKR1D1) is also a potent regulator of GC availability and GR activation in human hepatocytes ( Nikolaou
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within the central nervous system (CNS). Allopregnanolone is converted from progesterone by the enzymes 5α-reductase types 1 and 2 (5αR1; 5αR2) and 3α-hydroxysteroid oxidoreductase (3α-HSOR; Compagnone & Mellon 2000 ). These enzymes are present in the