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    NMDA receptor-dependent signalling pathways regulate arginine vasopressin expression in the paraventricular nucleus of the rat

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    Muller_et_al_Brain_Research (8.393Mb)
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    Publication date
    2019-11-01
    Author
    Lake, D.
    Corrêa, Sonia A.L.
    Müller, Jurgen
    Keyword
    Arginine vasopressin (AVP)
    Glutamate
    NMDA
    Gene expression
    Cell signalling
    MAPK
    Rights
    © 2019 Elsevier B.V. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    The antidiuretic hormone arginine vasopressin (AVP) regulates water homeostasis, blood pressure and a range of stress responses. It is synthesized in the hypothalamus and released from the posterior pituitary into the general circulation upon a range of stimuli. While the mechanisms leading to AVP secretion have been widely investigated, the molecular mechanisms regulating AVP gene expression are mostly unclear. Here we investigated the neurotransmitters and signal transduction pathways that activate AVP gene expression in the paraventricular nucleus (PVN) of the rat using acute brain slices and quantitative real-time PCR. We show that stimulation with l-glutamate robustly induced AVP gene expression in acute hypothalamic brain slices containing the PVN. More specifically, we show that AVP transcription was stimulated by NMDA. Using pharmacological treatments, our data further reveal that the activation of ERK1/2 (PD184352), CaMKII (KN-62) and PI3K (LY294002; 740 Y-P) is involved in the NMDA-induced AVP gene expression in the PVN. Together, this study identifies NMDA-mediated cell signalling pathways that regulate AVP gene expression in the rat PVN.
    URI
    http://hdl.handle.net/10454/17287
    Version
    Accepted manuscript
    Citation
    Lake D, Corrêa SAL and Muller J (2019) NMDA receptor-dependent signalling pathways regulate arginine vasopressin expression in the paraventricular nucleus of the rat. Brain Research. 1722: 146357.
    Link to publisher’s version
    https://doi.org/10.1016/j.brainres.2019.146357
    Type
    Article
    Collections
    Life Sciences Publications

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