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  Neurological dysfunctions in mice expressing different levels of the Q/R site-unedited AMPAR subunit GluR-B

Feldmeyer, D., Kask, K., Brusa, R., Kornau, H. C., Kolhekar, R., Rozov, A., et al. (1999). Neurological dysfunctions in mice expressing different levels of the Q/R site-unedited AMPAR subunit GluR-B. Nature Neuroscience, 2(2), 57-64. doi:10.1038/4561.

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NatNeurosci_2_1999_57.pdf (beliebiger Volltext), 410KB
 
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 Urheber:
Feldmeyer, Dirk1, Autor           
Kask, Kalev, Autor
Brusa, Rossella2, Autor           
Kornau, Hans Christian2, Autor           
Kolhekar, Rohini, Autor
Rozov, Andrej1, 2, Autor           
Burnashev, Nail1, Autor           
Jensen, Vidar, Autor
Hvalby, Øivind, Autor
Sprengel, Rolf2, Autor           
Seeburg, Peter H.2, Autor           
Affiliations:
1Department of Cell Physiology, Max Planck Institute for Medical Research, Max Planck Society, ou_1497701              
2Department of Molecular Neurobiology, Max Planck Institute for Medical Research, Max Planck Society, ou_1497704              

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 Zusammenfassung: We generated mouse mutants with targeted AMPA receptor (AMPAR) GluR-B subunit alleles, functionally expressed at different levels and deficient in Q/R-site editing. All mutant lines had increased AMPAR calcium permeabilities in pyramidal neurons, and one showed elevated macroscopic conductances of these channels. The AMPAR-mediated calcium influx induced NMDA-receptor-independent long-term potentiation (LTP) in hippocampal pyramidal cell connections. Calcium-triggered neuronal death was not observed, but mutants had mild to severe neurological dysfunctions, including epilepsy and deficits in dendritic architecture. The seizure-prone phenotype correlated with an increase in the macroscopic conductance, as independently revealed by the effect of a transgene for a Q/R-site-altered GluR-B subunit. Thus, changes in GluR-B gene expression and Q/R site editing can affect critical architectural and functional aspects of excitatory principal neurons

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Sprache(n): eng - English
 Datum: 1998-08-251998-11-091999-01-01
 Publikationsstatus: Erschienen
 Seiten: 8
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 Art der Begutachtung: Expertenbegutachtung
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Titel: Nature Neuroscience
  Andere : Nat. Neurosci.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: New York, NY : Nature America Inc.
Seiten: - Band / Heft: 2 (2) Artikelnummer: - Start- / Endseite: 57 - 64 Identifikator: ISSN: 1097-6256
CoNE: https://pure.mpg.de/cone/journals/resource/954925610931