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2002 Apelin-immunoreactivity in the rat hypothalamus and pituitary . Neuroscience Letters 327 193 – 197 . Burbach JPH Luckman SM Murphy D Gainer H 2001 Gene-regulation in the magnocellular hypothalamo-neurohypophsial system
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. Journal of Biological Chemistry 279 26274 – 26279 . ( doi:10.1074/jbc.M404149200 ) Jaszberenyi M Bujdoso E Telegdy G 2004 Behavioural, neuroendocrine and thermoregulatory actions of apelin-13 . Neuroscience 129 811 – 816 . ( doi:10
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-immunoreactivity in the rat hypothalamus and pituitary . Neuroscience Letters 327 193 – 197 . Droste SK Chandramohan Y Hill LE Linthorst ACE Reul JMHM 2007 Voluntary exercise impacts on the rat hypothalamic–pituitary–adrenocortical axis mainly at
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Neuroscience 2 894 – 897 . Candolfi M Zaldivar V Jaita G Seilicovich A 2006 Anterior pituitary cell renewal during the estrous cycle . Frontiers of Hormone Research 35 9 – 21 . Carbajo-Perez E Watanabe YG 1990 Cellular proliferation
Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Hebei Medical University, Shijiazhuang, Hebei, China
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Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Hebei Medical University, Shijiazhuang, Hebei, China
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Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Hebei Medical University, Shijiazhuang, Hebei, China
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Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Hebei Medical University, Shijiazhuang, Hebei, China
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Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Hebei Medical University, Shijiazhuang, Hebei, China
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Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Hebei Medical University, Shijiazhuang, Hebei, China
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feminization in the mouse . Nature 227 1217 – 1219 . ( https://doi.org/10.1038/2271217a0 ) Magee JC & Grienberger C 2020 Synaptic plasticity forms and functions . Annual Review of Neuroscience 43 95 – 117 . ( https://doi.org/10.1146/annurev
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Department of Physiology, Institute of Neuroscience and Physiology, Metabolic Research Unit, University of Gothenburg, Göteborg, Sweden
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CNC - Center for Neuroscience and Cell Biology, CIBB - Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
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Amperometric detection of single vesicle acetylcholine release events from an artificial cell . ACS Chemical Neuroscience 6 181 – 188 . ( https://doi.org/10.1021/cn5002667 ) Kimball CP & Murlin JR 1923 Aqueous extracts of pancreas: III . Journal of
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Neuroscience 42 2105 – 2113 . ( doi:10.1111/ejn.12972 ) Davies JS Kotokorpi P Eccles SR Barnes SK Tokarczuk PF Allen SK Whitworth HS Guschina IA Evans BA Mode A 2009 Ghrelin induces abdominal obesity via GHS
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The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia
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Institute for Women’s Health, University College London, London, UK
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Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
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authors thank the staff of the University Biomedical Services for their care of the animals and the technical staff of the Department of Physiology, Development and Neuroscience who assisted with this study. References Arvier M Langoutte L
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Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
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hypothalamic-pituitary-adrenal axis: development, programming actions of hormones and maternal-fetal interactions . Frontiers in Behavioral Neuroscience 14 601939 . ( https://doi.org/10.3389/fnbeh.2020.601939 ) Sloboda DM Moss TJM Gurrin LC Challis
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In heterologous expression systems, human GnRH receptors (hGnRHRs) are poorly expressed at the cell surface and this may reflect inefficient exit from the endoplasmic reticulum. Here, we have defined the proportion of GnRHRs at the cell surface using a novel assay based on adenoviral transduction with epitope-tagged GnRHRs followed by staining and semi-automated imaging. We find that in MCF7 (breast cancer) cells, the proportional cell surface expression (PCSE) of hGnRHRs is remarkably low (<1%), when compared with Xenopus laevis (X) GnRHRs (∼40%). This distinction is retained at comparable whole cell expression levels, and the hGnRHR PCSE is increased by addition of the XGnRHR C-tail (h.XGnRHR) or by a membrane-permeant pharmacological chaperone (IN3). The IN3 effect is concentration- and time-dependent and IN3 also enhances the hGnRHR-mediated (but not h.XGnRHR- or mouse GnRHR-mediated) stimulation of [3H]inositol phosphate accumulation and the hGnRHR-mediated reduction in cell number. We also find that the PCSE for hGnRHRs and h.XGnRHRs is low and is greatly increased by IN3 in two hormone-dependent cancer lines, but is higher and less sensitive to IN3 in a gonadotrope line. Finally, we show that the effect of IN3 on hGnRHR PCSE is not mimicked or blocked by two peptide antagonists although they do increase the PCSE for h.XGnRHRs, revealing that an antagonist-occupied cell surface GnRHR conformation can differ from that of the unoccupied receptor. The low PCSE of hGnRHRs and this novel peptide antagonist effect may be important for understanding GnRHR function in extrapituitary sites.