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<title lang=en>In vitro development of P- and R-like calcium currents in insect (Periplaneta americana) embryonic brain neurons.</title>
<creator>Benquet, Pascal</creator>
<creator>Pichon, Yves</creator>
<creator>Tiaho, François</creator>
<contributor>Laboratoire Traitement du Signal et de l'Image (LTSI) ; Université de Rennes 1 (UR1) - Institut National de la Santé et de la Recherche Médicale (INSERM)</contributor>
<contributor>Interactions cellulaires et moléculaires (ICM) ; Université de Rennes 1 (UR1) - IFR140 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut de recherche, santé, environnement et travail [Rennes] (Irset) ; Université d'Angers (UA) - Université des Antilles et de la Guyane (UAG) - Université de Rennes 1 (UR1) - École des Hautes Études en Santé Publique [EHESP] (EHESP) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )</contributor>
<description>International audience</description>
<source>ISSN: 0304-3940</source>
<source>Neuroscience Letters</source>
<publisher>Elsevier</publisher>
<identifier>hal-00982273</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00982273</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00982273</source>
<source>Neuroscience Letters, Elsevier, 2004, 365 (3), pp.228-32. 〈10.1016/j.neulet.2004.05.002〉</source>
<identifier>DOI : 10.1016/j.neulet.2004.05.002</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.neulet.2004.05.002</relation>
<identifier>PUBMED : 15246554</identifier>
<relation>info:eu-repo/semantics/altIdentifier/pmid/15246554</relation>
<language>en</language>
<subject>[SCCO.NEUR] Cognitive science/Neuroscience</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Voltage-gated calcium currents are important for the survival and growth of embryonic cockroach brain neurons in primary culture. In the present experiments, we have studied, using the patch-clamp technique, the evolution with time in culture of the voltage-dependency and of the pharmacological properties of the calcium conductance of these neurons during the formation of a network. We have observed a progressive increase of the high-voltage-activated calcium conductance and a 10mV shift of the voltage-dependency of activation towards more negative potentials. The proportion of the R-like calcium current component increased during network formation. At the same time, the highly omega-AgaTxIVA-sensitive P-like component of the current is progressively replaced by a component which is less sensitive to the toxin. The origin and functional implications of these modifications are discussed.</description>
<date>2004-07-29</date>
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