The role of sodium and potassium transport pathways in taste transduction: an overview

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Abstract
Recent studies have shown that taste sensations are mediated by a multiplicity of transduction mechanisms. The taste of salt is produced in part by the entry of Na+ through channels in the apical taste cell membrane. Na+ transport also mediates sweet perception in some species. The taste of KCI requires entry of K+ through apical potassium channels. The production of second messengers such as cAMP by taste stimuli or taste modifiers can depolarize taste cells by inducing an enzymatic cascade that alters K+ permeability.
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