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Verfasst von:Jamann, Nora [VerfasserIn]   i
 Dannehl, Dominik [VerfasserIn]   i
 Lehmann, Nadja [VerfasserIn]   i
 Wagener, Jan Robin [VerfasserIn]   i
 Thielemann, Corinna [VerfasserIn]   i
 Schultz, Christian [VerfasserIn]   i
 Staiger, Jochen F. [VerfasserIn]   i
 Kole, Maarten H. P. [VerfasserIn]   i
 Engelhardt, Maren [VerfasserIn]   i
Titel:Sensory input drives rapid homeostatic scaling of the axon initial segment in mouse barrel cortex
Verf.angabe:Nora Jamann, Dominik Dannehl, Nadja Lehmann, Robin Wagener, Corinna Thielemann, Christian Schultz, Jochen Staiger, Maarten H.P. Kole and Maren Engelhardt
E-Jahr:2021
Jahr:04 January 2021
Umfang:14 S.
Fussnoten:Gesehen am 16.09.2021
Titel Quelle:Enthalten in: Nature Communications
Ort Quelle:[London] : Springer Nature, 2010
Jahr Quelle:2021
Band/Heft Quelle:12(2021), Artikel-ID 23, Seite 1-14
ISSN Quelle:2041-1723
Abstract:The axon initial segment (AIS) is a critical microdomain for action potential initiation and implicated in the regulation of neuronal excitability during activity-dependent plasticity. While structural AIS plasticity has been suggested to fine-tune neuronal activity when network states change, whether it acts in vivo as a homeostatic regulatory mechanism in behaviorally relevant contexts remains poorly understood. Using the mouse whisker-to-barrel pathway as a model system in combination with immunofluorescence, confocal analysis and electrophysiological recordings, we observed bidirectional AIS plasticity in cortical pyramidal neurons. Furthermore, we find that structural and functional AIS remodeling occurs in distinct temporal domains: Long-term sensory deprivation elicits an AIS length increase, accompanied with an increase in neuronal excitability, while sensory enrichment results in a rapid AIS shortening, accompanied by a decrease in action potential generation. Our findings highlight a central role of the AIS in the homeostatic regulation of neuronal input-output relations.
DOI:doi:10.1038/s41467-020-20232-x
URL:kostenfrei: Volltext: https://doi.org/10.1038/s41467-020-20232-x
 kostenfrei: Volltext: https://www.nature.com/articles/s41467-020-20232-x
 DOI: https://doi.org/10.1038/s41467-020-20232-x
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1770807764
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