Modulation of Taste Sensitivity by GLP-1 Signaling in Taste Buds

Modulation of sensory function can help animals adjust to a changing external and internal environment. Even so, mechanisms for modulating taste sensitivity are poorly understood. Using immunohistochemical, biochemical, and behavioral approaches, we found that the peptide hormone glucagon‐like pepti...

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Veröffentlicht in:Annals of the New York Academy of Sciences 2009-07, Vol.1170 (1), p.98-101
Hauptverfasser: Martin, Bronwen, Dotson, Cedrick D., Shin, Yu-Kyong, Ji, Sunggoan, Drucker, Daniel J., Maudsley, Stuart, Munger, Steven D.
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Sprache:eng
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Zusammenfassung:Modulation of sensory function can help animals adjust to a changing external and internal environment. Even so, mechanisms for modulating taste sensitivity are poorly understood. Using immunohistochemical, biochemical, and behavioral approaches, we found that the peptide hormone glucagon‐like peptide‐1 (GLP‐1) and its receptor (GLP‐1R) are expressed in mammalian taste buds. Furthermore, we found that GLP‐1 signaling plays an important role in the modulation of taste sensitivity: GLP‐1R knockout mice exhibit a dramatic reduction in sweet taste sensitivity as well as an enhanced sensitivity to umami‐tasting stimuli. Together, these findings suggest a novel paracrine mechanism for the hormonal modulation of taste function in mammals.
ISSN:0077-8923
1749-6632
1930-6547
DOI:10.1111/j.1749-6632.2009.03920.x