Connectivity and network state-dependent recruitment of long-range VIP-GABAergic neurons in the mouse hippocampus. 2018

Ruggiero Francavilla, and Vincent Villette, and Xiao Luo, and Simon Chamberland, and Einer Muñoz-Pino, and Olivier Camiré, and Kristina Wagner, and Viktor Kis, and Peter Somogyi, and Lisa Topolnik
Neuroscience Axis, CHU de Québec Research Center, Université Laval, Quebec, QC, G1V 4G2, Canada.

GABAergic interneurons in the hippocampus provide for local and long-distance coordination of neurons in functionally connected areas. Vasoactive intestinal peptide-expressing (VIP+) interneurons occupy a distinct niche in circuitry as many of them specialize in innervating GABAergic cells, thus providing network disinhibition. In the CA1 hippocampus, VIP+ interneuron-selective cells target local interneurons. Here, we discover a type of VIP+ neuron whose axon innervates CA1 and also projects to the subiculum (VIP-LRPs). VIP-LRPs show specific molecular properties and target interneurons within the CA1 area but both interneurons and pyramidal cells within subiculum. They are interconnected through gap junctions but demonstrate sparse spike coupling in vitro. In awake mice, VIP-LRPs decrease their activity during theta-run epochs and are more active during quiet wakefulness but not coupled to sharp-wave ripples. Together, the data provide evidence for VIP interneuron molecular diversity and functional specialization in controlling cell ensembles along the hippocampo-subicular axis.

UI MeSH Term Description Entries
D007395 Interneurons Most generally any NEURONS which are not motor or sensory. Interneurons may also refer to neurons whose AXONS remain within a particular brain region in contrast to projection neurons, which have axons projecting to other brain regions. Intercalated Neurons,Intercalated Neuron,Interneuron,Neuron, Intercalated,Neurons, Intercalated
D008297 Male Males
D005260 Female Females
D006624 Hippocampus A curved elevation of GRAY MATTER extending the entire length of the floor of the TEMPORAL HORN of the LATERAL VENTRICLE (see also TEMPORAL LOBE). The hippocampus proper, subiculum, and DENTATE GYRUS constitute the hippocampal formation. Sometimes authors include the ENTORHINAL CORTEX in the hippocampal formation. Ammon Horn,Cornu Ammonis,Hippocampal Formation,Subiculum,Ammon's Horn,Hippocampus Proper,Ammons Horn,Formation, Hippocampal,Formations, Hippocampal,Hippocampal Formations,Hippocampus Propers,Horn, Ammon,Horn, Ammon's,Proper, Hippocampus,Propers, Hippocampus,Subiculums
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014660 Vasoactive Intestinal Peptide A highly basic, 28 amino acid neuropeptide released from intestinal mucosa. It has a wide range of biological actions affecting the cardiovascular, gastrointestinal, and respiratory systems and is neuroprotective. It binds special receptors (RECEPTORS, VASOACTIVE INTESTINAL PEPTIDE). VIP (Vasoactive Intestinal Peptide),Vasoactive Intestinal Polypeptide,Vasointestinal Peptide,Intestinal Peptide, Vasoactive,Intestinal Polypeptide, Vasoactive,Peptide, Vasoactive Intestinal,Peptide, Vasointestinal,Polypeptide, Vasoactive Intestinal
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D056547 CA1 Region, Hippocampal One of four subsections of the hippocampus described by Lorente de No, located furthest from the DENTATE GYRUS. CA1 Field of Hippocampus,CA1 Pyramidal Cell Area,CA1 Pyramidal Cell Layer,CA1 Stratum Pyramidale,CA1 Stratum Radiatum,Cornu Ammonis 1 Area,Hippocampal Sector CA1,Hippocampus CA1 Field,Regio Superior of Hippocampus,Stratum Radiatum, CA1,CA1 Field, Hippocampus,CA1 Stratum Radiatums,CA1, Hippocampal Sector,Field, Hippocampus CA1,Hippocampal CA1 Region,Hippocampus Regio Superior,Radiatum, CA1 Stratum,Radiatums, CA1 Stratum,Region, Hippocampal CA1,Sector CA1, Hippocampal,Stratum Pyramidale, CA1,Stratum Radiatums, CA1
D059330 GABAergic Neurons Neurons whose primary neurotransmitter is GAMMA-AMINOBUTYRIC ACID. GABA Cells,GABA Neurons,Cell, GABA,Cells, GABA,GABA Cell,GABA Neuron,GABAergic Neuron,Neuron, GABA,Neuron, GABAergic,Neurons, GABA,Neurons, GABAergic
D017966 Pyramidal Cells Projection neurons in the CEREBRAL CORTEX and the HIPPOCAMPUS. Pyramidal cells have a pyramid-shaped soma with the apex and an apical dendrite pointed toward the pial surface and other dendrites and an axon emerging from the base. The axons may have local collaterals but also project outside their cortical region. Pyramidal Neurons,Cell, Pyramidal,Cells, Pyramidal,Neuron, Pyramidal,Neurons, Pyramidal,Pyramidal Cell,Pyramidal Neuron

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