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  • 1
    Publication Date: 2014-08-02
    Description: The success story of fast-spiking, parvalbumin-positive (PV(+)) GABAergic interneurons (GABA, gamma-aminobutyric acid) in the mammalian central nervous system is noteworthy. In 1995, the properties of these interneurons were completely unknown. Twenty years later, thanks to the massive use of subcellular patch-clamp techniques, simultaneous multiple-cell recording, optogenetics, in vivo measurements, and computational approaches, our knowledge about PV(+) interneurons became more extensive than for several types of pyramidal neurons. These findings have implications beyond the "small world" of basic research on GABAergic cells. For example, the results provide a first proof of principle that neuroscientists might be able to close the gaps between the molecular, cellular, network, and behavioral levels, representing one of the main challenges at the present time. Furthermore, the results may form the basis for PV(+) interneurons as therapeutic targets for brain disease in the future. However, much needs to be learned about the basic function of these interneurons before clinical neuroscientists will be able to use PV(+) interneurons for therapeutic purposes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Hua -- Gan, Jian -- Jonas, Peter -- New York, N.Y. -- Science. 2014 Aug 1;345(6196):1255263. doi: 10.1126/science.1255263. Epub 2014 Jul 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉IST Austria (Institute of Science and Technology Austria), Am Campus 1, A-3400 Klosterneuburg, Austria. ; IST Austria (Institute of Science and Technology Austria), Am Campus 1, A-3400 Klosterneuburg, Austria. peter.jonas@ist.ac.at.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25082707" target="_blank"〉PubMed〈/a〉
    Keywords: *Action Potentials ; Animals ; Brain Diseases/physiopathology ; GABAergic Neurons/metabolism/*physiology ; Interneurons/metabolism/*physiology ; Mental Disorders/physiopathology ; Mice ; Nerve Net ; Parvalbumins/*metabolism ; Synaptic Potentials ; Synaptic Transmission
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2009-03-07
    Description: Glutamate receptors of the AMPA-subtype (AMPARs), together with the transmembrane AMPAR regulatory proteins (TARPs), mediate fast excitatory synaptic transmission in the mammalian brain. Here, we show by proteomic analysis that the majority of AMPARs in the rat brain are coassembled with two members of the cornichon family of transmembrane proteins, rather than with the TARPs. Coassembly with cornichon homologs 2 and 3 affects AMPARs in two ways: Cornichons increase surface expression of AMPARs, and they alter channel gating by markedly slowing deactivation and desensitization kinetics. These results demonstrate that cornichons are intrinsic auxiliary subunits of native AMPARs and provide previously unknown molecular determinants for glutamatergic neurotransmission in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwenk, Jochen -- Harmel, Nadine -- Zolles, Gerd -- Bildl, Wolfgang -- Kulik, Akos -- Heimrich, Bernd -- Chisaka, Osamu -- Jonas, Peter -- Schulte, Uwe -- Fakler, Bernd -- Klocker, Nikolaj -- New York, N.Y. -- Science. 2009 Mar 6;323(5919):1313-9. doi: 10.1126/science.1167852.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Physiology II, University of Freiburg, Engesserstrasse 4, 79108 Freiburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19265014" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/cytology/*metabolism ; Cell Membrane/metabolism ; Glutamic Acid/metabolism ; Immunohistochemistry ; *Ion Channel Gating ; Kinetics ; Membrane Proteins/chemistry/metabolism ; Mice ; Neurons/*metabolism ; Patch-Clamp Techniques ; Protein Subunits/chemistry/metabolism ; Proteomics ; Rats ; Receptors, AMPA/chemistry/*metabolism ; Signal Transduction ; Synapses/metabolism ; *Synaptic Transmission ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2014-04-15
    Description: Author(s): Vitorio A. De Lorenci and Jonas P. Pereira We propose and investigate a family of nonlinear metamaterials in which light rays propagate just in one direction—one-way propagation. Furthermore, we argue how such nonlinear media could provide an analog model for investigating the Born-Infeld Lagrangian in the realm of fields larger than its sca... [Phys. Rev. A 89, 043822] Published Mon Apr 14, 2014
    Keywords: Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
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  • 4
    Publication Date: 2016-10-29
    Description: Author(s): Jonas P. Pereira, Igor I. Smolyaninov, and Vera N. Smolyaninova We show that unidirectional propagation of light rays in the limit of geometric optics could arise in some magnetic fluids due to the magnetoelectric effect under weak DC magnetic fields and strong DC electric fields around half of their dielectric breakdown. For such liquids as kerosene and transfo… [Phys. Rev. A 94, 043852] Published Fri Oct 28, 2016
    Keywords: Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
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  • 5
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    American Physical Society (APS)
    Publication Date: 2012-07-03
    Description: Author(s): Vitorio A. De Lorenci and Jonas P. Pereira We study the propagation of electromagnetic waves in the limit of geometrical optics for a class of nearly transparent nonlinear uniaxial metamaterials for which their permittivity tensors present a negative principal component. Their permeabilities are assumed positive and dependent on the electric... [Phys. Rev. A 86, 013801] Published Mon Jul 02, 2012
    Keywords: Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
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