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Overexpression of Calretinin Enhances Short-Term Synaptic Depression.
Bolshakov, Alexey P; Kolleker, Alexander; Volkova, Evgenia P; Valiullina-Rakhmatullina, Fliza; Kolosov, Peter M; Rozov, Andrei.
Afiliación
  • Bolshakov AP; Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences (RAS), Moscow, Russia.
  • Kolleker A; Research Laboratory of Electrophysiology, Pirogov Russian National Research Medical University, Moscow, Russia.
  • Volkova EP; Max Planck Institute for Medical Research, Department of Molecular Neurobiology, Heidelberg, Germany.
  • Valiullina-Rakhmatullina F; Buryat State University, Medical Institute, Ulan-Ude, Russia.
  • Kolosov PM; Research Laboratory of Electrophysiology, Pirogov Russian National Research Medical University, Moscow, Russia.
  • Rozov A; Laboratory of Neurobiology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.
Front Cell Neurosci ; 13: 91, 2019.
Article en En | MEDLINE | ID: mdl-30930749
Analysis of the effects of various proteins on short-term synaptic plasticity is a difficult task, which may require the use of knockout animals. Here, we propose an alternative experimental approach for studying the roles of desired proteins in synaptic plasticity. We packed the Ca2+-binding protein calretinin and the fluorescent protein Venus into AAV and injected the concentrated viral suspension into the neocortex of newborn rats. The infected layer 2/3 pyramidal cells were identified in rat cortical slices using Venus fluorescence. Analysis of short-term synaptic plasticity using paired patch clamp recordings between layer 2/3 pyramidal cells (presynaptic cell) and fast-spiking (FS) interneurons (post-synaptic cell) showed that calretinin expression in the pyramidal cells did not change the failure rate in this synapse but did decrease synaptic delay. Analysis of the parameters of short-term synaptic plasticity showed that the amplitude of the first EPSP in the train was not affected by calretinin, however, calretinin strongly enhanced short-term depression. In addition, we found that the effect of calretinin depended on the presynaptic firing frequency: an increase in frequency resulted in enhancement of synaptic depression.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Front Cell Neurosci Año: 2019 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
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PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Front Cell Neurosci Año: 2019 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Suiza