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Christian K Tipsmark Department of Zoology, North Carolina State University, Raleigh, North Carolina 27695-7617, USA

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Christina N Strom Department of Zoology, North Carolina State University, Raleigh, North Carolina 27695-7617, USA

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Sean T Bailey Department of Zoology, North Carolina State University, Raleigh, North Carolina 27695-7617, USA

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Russell J Borski Department of Zoology, North Carolina State University, Raleigh, North Carolina 27695-7617, USA

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gonadotropin-releasing hormone regulation of prolactin release from lactotrophs of tilapia ( Oreochromis mossambicus ) . General and Comparative Endocrinology 142 227 – 233 . Volkoff H Eykelbosh AJ Peter RE 2003 Role of leptin in

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Tony M Plant Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, 204 Craft Avenue, Room B311, Pittsburgh, Pennsylvania 15213, USA

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in the peripheral circulation and gonadotropin-releasing hormone (GnRH) in portal blood, development of immunohistochemical techniques to localize neuropeptides and neurotransmitters in the hypothalamus, application of techniques in molecular

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S Ramaswamy
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C R Pohl
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G R Marshall
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T M Plant
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. Chase DJ , Schanbacher BD & Lunstra DD 1988 Effects of pulsatile and continuous luteinizing hormone (LH) infusions on testosterone response to LH in rams actively immunized against gonadotropin-releasing hormone. Endocrinology 123 816 –826

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George Fink Florey Institute of Neuroscience and Mental Health, University of Melbourne, Kenneth Myer Building, Genetics Lane, Parkville, Victoria 3010, Australia

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of GnRH. The volumes of portal blood collected are shown in the lower panel. Reproduced from Sarkar DK, Chiappa SA, Fink G & Sherwood NM 1976 Gonadotropin-releasing hormone surge in pro-oestrous rats. Nature 264 461–463, with permission from

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Shiping Su College of Animal Sciences and Technology, College of Life Science, The Biotechnology Center of Anhui Agriculture University, Anhui Agricultural University, 130, Changjiang West Road, Hefei, Anhui 230036, People's Republic of China

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Xiaoxia Sun College of Animal Sciences and Technology, College of Life Science, The Biotechnology Center of Anhui Agriculture University, Anhui Agricultural University, 130, Changjiang West Road, Hefei, Anhui 230036, People's Republic of China

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Xiuhong Zhou College of Animal Sciences and Technology, College of Life Science, The Biotechnology Center of Anhui Agriculture University, Anhui Agricultural University, 130, Changjiang West Road, Hefei, Anhui 230036, People's Republic of China

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Fuigui Fang College of Animal Sciences and Technology, College of Life Science, The Biotechnology Center of Anhui Agriculture University, Anhui Agricultural University, 130, Changjiang West Road, Hefei, Anhui 230036, People's Republic of China

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Yunsheng Li College of Animal Sciences and Technology, College of Life Science, The Biotechnology Center of Anhui Agriculture University, Anhui Agricultural University, 130, Changjiang West Road, Hefei, Anhui 230036, People's Republic of China

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revealed that athymic nudes have reduced numbers of brain gonadotropin-releasing hormone (GnRH) neurons and pituitary gonadotropic cells, compared with heterozygotes, and neonatal thymulin gene therapy could prevent these changes ( Reggiani et al . 2009 b

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Roger Guillemin Salk Institute for Biological Studies, 10010 N. Torrey Pines Road, La Jolla, California 92037, USA

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came to be referred to as ‘releasing factors’ (RF) ( Saffran & Schally 1956 ); hence thyrotropin releasing factor (TRF), luteinizing hormone (gonadotropin) releasing factor (LRF/ GnRF), growth hormone releasing factor (GRF), corticotropin releasing

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Saira Hameed Division of Diabetes, Endocrinology and Metabolism, Section of Investigative Medicine, Imperial College London, Hammersmith Hospital, 6th Floor Commonwealth Building, Du Cane Road, London W12 0NN, UK

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Channa N Jayasena Division of Diabetes, Endocrinology and Metabolism, Section of Investigative Medicine, Imperial College London, Hammersmith Hospital, 6th Floor Commonwealth Building, Du Cane Road, London W12 0NN, UK

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Waljit S Dhillo Division of Diabetes, Endocrinology and Metabolism, Section of Investigative Medicine, Imperial College London, Hammersmith Hospital, 6th Floor Commonwealth Building, Du Cane Road, London W12 0NN, UK

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Postnatal development of kisspeptin neurons in mouse hypothalamus; sexual dimorphism and projections to gonadotropin-releasing hormone neurons . Endocrinology 147 5817 – 5825 doi:10.1210/en.2006-0787 . Clarkson J d'Anglemont de Tassigny X Moreno

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Jonathan Lindzey Receptor Biology Section, Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, MD B3-02, PO Box 12233, Research Triangle Park, North Carolina 27709, USA
Department of Biological Sciences, Lock Haven University, Lock Haven, Pennsylvania 17745, USA

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Friederike L Jayes Receptor Biology Section, Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, MD B3-02, PO Box 12233, Research Triangle Park, North Carolina 27709, USA
Department of Biological Sciences, Lock Haven University, Lock Haven, Pennsylvania 17745, USA

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Mariana M Yates Receptor Biology Section, Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, MD B3-02, PO Box 12233, Research Triangle Park, North Carolina 27709, USA
Department of Biological Sciences, Lock Haven University, Lock Haven, Pennsylvania 17745, USA

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John F Couse Receptor Biology Section, Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, MD B3-02, PO Box 12233, Research Triangle Park, North Carolina 27709, USA
Department of Biological Sciences, Lock Haven University, Lock Haven, Pennsylvania 17745, USA

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Kenneth S Korach Receptor Biology Section, Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, MD B3-02, PO Box 12233, Research Triangle Park, North Carolina 27709, USA
Department of Biological Sciences, Lock Haven University, Lock Haven, Pennsylvania 17745, USA

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Introduction Gonadotropin-releasing hormone (GnRH) is secreted in a pulsatile pattern from the hypothalamus into the hypothalamic–hypophyseal portal veins that drain into the anterior pituitary, and is the primary stimulus for the

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Nerine T Joseph Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK
Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK

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Kevin Morgan Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK

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Robin Sellar Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK

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Derek McBride Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK

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Robert P Millar Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK
Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK

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Ian C Dunn Royal (Dick) School of Veterinary Studies, MRC Human Reproductive Sciences Unit, MRC/UCT, The Roslin Institute, University of Edinburgh, Roslin, Midlothian, Edinburgh EH25 9PS, UK

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in g-protein-coupled receptors – the conserved arginine-cage motif in the gonadotropin-releasing hormone receptor . Journal of Biological Chemistry 273 10445 – 10453 . Berg KA Clarke WP Sailstad C Saltzman A Maayani S 1994 Signal

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F Wahab Stem Cell Biology Unit, Laboratory of Reproductive Neuroendocrinology, Leibniz Institute for Primate Research, German Primate Center, Kellnerweg 4, D-37077 Göttingen, Germany

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M Shahab Stem Cell Biology Unit, Laboratory of Reproductive Neuroendocrinology, Leibniz Institute for Primate Research, German Primate Center, Kellnerweg 4, D-37077 Göttingen, Germany

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R Behr Stem Cell Biology Unit, Laboratory of Reproductive Neuroendocrinology, Leibniz Institute for Primate Research, German Primate Center, Kellnerweg 4, D-37077 Göttingen, Germany

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Introduction Reproduction in nonprimate mammals and in primates is highly responsive to metabolic alterations ( Cameron 1991 , Wade & Jones 2004 ). Deficiencies of metabolic fuels prevent the proper release of gonadotropin releasing hormone (GnRH

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