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Title
  • Interaction between gustatory depolarizing receptor potential and efferent-induced slow depolarizing synaptic potential in frog taste cell.
Creator

Sato, Toshihide

Nishishita, Kazuhisa

Okada, Yukio

Toda, Kazuo

Rights
    • © 2008 Springer Science+Business Media, LLC.
    • The original publication is available at www.springerlink.com
Subject
  • Other Basic taste stimuli
  • Other Frog taste cell
  • Other Gustatory efferent synapse
  • Other Parasympathetic nerve
  • Other Receptor potential
  • Other Slow depolarizing synaptic potential
Description
Other
  • Electrical stimulation of parasympathetic nerve (PSN) efferent fibers in the glossopharyngeal nerve induced a slow depolarizing synaptic potential (DSP) in frog taste cells under hypoxia. The objective of this study is to examine the interaction between a gustatory depolarizing receptor potential (GDRP) and a slow DSP. The amplitude of slow DSP added to a tastant-induced GDRP of 10 mV was suppressed to 60% of control slow DSPs for NaCl and acetic acid stimulations, but to 20-30% for quinine-HCl (Q-HCl) and sucrose stimulations. On the other hand, when a GDRP was induced during a prolonged slow DSP, the amplitude of GDRPs induced by 1 M NaCl and 1 M sucrose was suppressed to 50% of controls, but that by 1 mM acetic acid and 10 mM Q-HCl unchanged. It is concluded that the interaction between GDRPs and efferent-induced slow DSPs in frog taste cells under hypoxia derives from the crosstalk between a gustatory receptor current across the receptive membrane and a slow depolarizing synaptic current across the proximal subsynaptic membrane of taste cells.
Other
  • identifier:Cellular and molecular neurobiology, 29(2), pp.243-252; 2009
Other
  • identifier:1573-6830
PublisherSpringer Netherlands
Date Issued 2009-03
Languageeng
NIItypejournal article
VersiontypeAM
Identifier URI http://hdl.handle.net/10069/22252
Relation
  • isIdenticalTo PMID 18972206
  • isIdenticalTo DOI https://doi.org/10.1007/s10571-008-9317-7
Journal
    • ISSN 0272-4340
    • Cellular and molecular neurobiology
    29(2), 243-252
File
Oaidate2012-01-26T06:48:00Z