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Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Campusvej 55, DK-5230 Odense M, Denmark
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Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Campusvej 55, DK-5230 Odense M, Denmark
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Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Campusvej 55, DK-5230 Odense M, Denmark
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Introduction Cortisol, the major corticosteroid in teleost fish, is considered a dual regulator of chloride cell differentiation and function. During seawater (SW) acclimation, cortisol stimulates chloride cell numbers and Na
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production of glucocorticoids in fasciculata cells. The present study examines whether PAF can act on cortisol secretion by the perfused guinea-pig adrenal via the PAF receptor and PKC activation. Materials and Methods
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Muséum National d'Histoire Naturelle, Marine Station of Concarneau, DMPA USM 0401, UMR 7208 CNRS BOREA ‘Biologie des Organismes et Ecosystèmes Aquatiques’, 7 rue Cuvier, CP 32, 75231 Paris Cedex 05, France
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cortisol may also show large variations during sexual maturation. Studies in salmon ( Sower & Schreck 1982 , Martin et al . 1986 , Carruth et al . 2000 a ) showed that very high plasma levels of cortisol are observed during the final phase of
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, transport stress during gestation resulted in offspring with increased pituitary weights and higher post-restraint cortisol concentrations ( Lay et al. 1997 a , b ). Repeated transport stress in the last third of gestation of goats had no effect on basal
Department of Animal Physiology, Departamento de Biología, Instituto de Zoología, Institute for Water and Wetland Research, Faculty of Science, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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Department of Animal Physiology, Departamento de Biología, Instituto de Zoología, Institute for Water and Wetland Research, Faculty of Science, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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hormones and the steroid hormone cortisol are thought to be implicated in osmoregulation in teleosts. Cortisol is a gluco- and mineralocorticoid in fish ( Mommsen et al . 1999 , McCormick 2001 ). In teleosts acclimating to hyperosmotic environments
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, Vijayan et al . 2010 , Deane & Woo 2011 ). Also, studies have shown that cortisol, the primary circulating corticosteroid in teleost, modulates target tissue Hsp70 expression in fishes, thereby linking the cellular stress response with the organismal
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SUMMARY
The apparent rate of cortisol turnover was determined in conscious and anaesthetized sheep by injection of tritium-labelled cortisol. Simultaneously, the rate of cortisol secretion was determined by collection of adrenal venous blood. The apparent rate of cortisol turnover was found to be two to three times the rate of cortisol secretion.
Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
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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
Animal Production, School of Agriculture and Forestry, University of Melbourne, Parkville, Victoria 3052, Australia
Victorian Institute of Animal Science, Werribee, Victoria 3030, Australia
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Animal Production, School of Agriculture and Forestry, University of Melbourne, Parkville, Victoria 3052, Australia
Victorian Institute of Animal Science, Werribee, Victoria 3030, Australia
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Animal Production, School of Agriculture and Forestry, University of Melbourne, Parkville, Victoria 3052, Australia
Victorian Institute of Animal Science, Werribee, Victoria 3030, Australia
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Animal Production, School of Agriculture and Forestry, University of Melbourne, Parkville, Victoria 3052, Australia
Victorian Institute of Animal Science, Werribee, Victoria 3030, Australia
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one such factor. There are differences between the sexes in adult sheep in the cortisol response to stress and it appears that the type of stressor imposed influences the nature of these differences. For instance, females have been found to have a
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corticotropic cells and that the profile characteristics after hypophysectomy would hold predictive value for recurrence of hyperadrenocorticism. Here, we report on the 6-h plasma profiles of ACTH, cortisol, α-MSH, and GH in dogs with PDH before and