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c-Fos Expression in the Nucleus of the Solitary Tract in Response to Salt Stimulation in Rats

 Yongho Kwak  ;  Mee-Ra Rhyu  ;  Bae Hwan Lee  ;  Min Jee Kwon  ;  Young Hee Sa  ;  Sun Joon Bai 
 Korean Journal of Physiology & Pharmacology, Vol.15(6) : 437-443, 2011 
Journal Title
 Korean Journal of Physiology & Pharmacology 
Issue Date
Salt signals in tongue are relayed to the nucleus of the solitary tract (NST). This signaling is very important to determine whether to swallow salt-related nutrition or not and suggests some implications in discrimination of salt concentration. Salt concentration-dependent electrical responses in the chorda tympani and the NST were well reported. But salt concentration-dependency and spatial distribution of c-Fos in the NST were not well established. In the present study, NaCl signaling in the NST was studied in urethane-anesthetized rats. The c-Fos immunoreactivity in the six different NST areas along the rostral-caudal axis and six subregions in each of bilateral NST were compared between applications of distilled water and different concentrations of NaCl to the tongue of experimental animals. From this study, salt stimulation with high concentration (1.0 M NaCl) induced significantly higher c-Fos expression in intermediate NST and dorsal-medial and dorsal-middle subregions of the NST compared to distilled water stimulation. The result represents the specific spatial distribution of salt taste perception in the NST.
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Physiology (생리학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실)
Yonsei Authors
곽용호(Kwak, Yong Ho) ; 권민지(Kwon, Min Jee) ; 배선준(Bai, Sun Joon) ; 사영희(Sa, Young Hee) ; 이배환(Lee, Bae Hwan)
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