Document Detail

Taste responses to amino acids in the southern leopard frog, Rana sphenocephala.
MedLine Citation:
PMID:  2863039     Owner:  NLM     Status:  MEDLINE    
Integrated taste recordings of the glossopharyngeal (IX) nerve innervating the tongue of the southern leopard frog were studied in response to various amino acids and quinine hydrochloride. Amino acids and quinine hydrochloride elicited primarily phasic taste responses. Acidic (L-aspartic and L-glutamic) and basic (L-lysine and L-arginine) amino acids, adjusted to pH8, were effective taste stimuli. All glossopharyngeal nerve twigs that responded to amino acid stimuli also responded to quinine; however, not all quinine-sensitive IX nerve bundles were responsive to amino acids. Electrophysiological thresholds for amino acids were estimated to be 2.5-10 mM, whereas threshold for quinine hydrochloride averaged approximately 10 microM.
K D Gordon; J Caprio
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Comparative biochemistry and physiology. A, Comparative physiology     Volume:  81     ISSN:  0300-9629     ISO Abbreviation:  Comp Biochem Physiol A Comp Physiol     Publication Date:  1985  
Date Detail:
Created Date:  1985-10-03     Completed Date:  1985-10-03     Revised Date:  2008-10-30    
Medline Journal Info:
Nlm Unique ID:  1276312     Medline TA:  Comp Biochem Physiol A Comp Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  525-30     Citation Subset:  IM    
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MeSH Terms
Amino Acids*
Dose-Response Relationship, Drug
Glossopharyngeal Nerve / physiology
Hydrogen-Ion Concentration
Structure-Activity Relationship
Grant Support
Reg. No./Substance:
0/Amino Acids; 130-95-0/Quinine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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