NDLI: Quinine and citric acid elicit distinctive Fos-like immunoreactivity in the rat nucleus of the solitary tract.

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Quinine and citric acid elicit distinctive Fos-like immunoreactivity in the rat nucleus of the solitary tract.

Content Provider	Semantic Scholar
Author	Travers, Susan
Copyright Year	2002
Abstract	The present experiment investigated Fos-like immunoreactivity (FLI) in the nucleus of the solitary tract (NST) after intraoral infusions of 0.1 M citric acid, 0.3 M NaCl, and 0.3-30 mM quinine monohydrochloride (QHCl) in awake, behaving rats. Increases in QHCl concentration produced increases in the numbers of FLI-labeled neurons in the rostral part of the intermediate (i(r)) and rostral (r) NST, but the topographic distribution of FLI was consistent across QHCl concentrations and distinctive compared with effects of citric acid. Quinine elicited FLI concentrated in the medial third of the nucleus; acid elicited more broadly distributed FLI concentrated farther laterally. Surprisingly, in contrast to QHCl and citric acid, NaCl produced FLI that was indistinguishable from that produced by water. Although the functional significance of these patterns is unknown, citric acid and QHCl are nonpreferred stimuli but produced different oromotor behaviors. QHCl (30 mM) elicited approximately 3.2 times as many gapes as citric acid (0.1 M), and acid elicited more ingestive responses. Parallel differences in FLI expression suggest that different NST regions may have distinctive roles in triggering oromotor behaviors.
Starting Page	1
Ending Page	14
Page Count	14
File Format	PDF HTM / HTML
DOI	10.1152/ajpregu.00590.2001
PubMed reference number	12010763
Journal	Medline
Volume Number	282
Issue Number	6
Alternate Webpage(s)	http://ajpregu.physiology.org/content/ajpregu/282/6/r1798.full.pdf
Alternate Webpage(s)	https://doi.org/10.1152/ajpregu.00590.2001
Journal	American journal of physiology. Regulatory, integrative and comparative physiology
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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