NDLI: Reinnervation of cross-regenerated gustatory nerve fibers into amiloride-sensitive and amiloride-insensitive taste receptor cells

Content Provider	PubMed Central
Author	Ninomiya, Yuzo
Copyright Year	1998
Abstract	Single nerve fiber responses to NaCl and their inhibition by amiloride were compared among the chorda tympani (CT) and glossopharyngeal (IXth), and their cross-regenerated nerves in the C57BL/KsJ mice. The CT nerve innervating the anterior part of the tongue contained approximately equal numbers of two types of NaCl-responsive neurons; one type showed strong suppression of NaCl responses by amiloride [amiloride-sensitive (AS) type], and the other type showed only weak or no suppression of NaCl responses by amiloride [amiloride-insensitive (AI) type]. In contrast, the IXth nerve innervating the posterior part of the tongue has almost exclusively the AI type. This relative abundance of the AS and AI types of fibers was not altered by cross-regeneration of the two gustatory nerves into the reverse tongue regions. This suggests that regenerated taste axons selectively recouple with the appropriate type of receptor cell whether they innervate the front or the back of the tongue. Such selective synapse reformation may help explain the stability of response profiles of taste neurons during continual receptor cell turnover.
Starting Page	5347
File Format	PDF
ISSN	10916490
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	9
Volume Number	95
Language	English
Publisher	The National Academy of Sciences
Publisher Date	1998-04-28
Access Restriction	Open
Rights Holder	The National Academy of Sciences
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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