An olfactory subsystem that mediates high-sensitivity detection of volatile amines.
Cell Rep
; 2(1): 76-88, 2012 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-22840399
ABSTRACT
Olfactory stimuli are detected by over 1,000 odorant receptors in mice, with each receptor being mapped to specific glomeruli in the olfactory bulb. The trace amine-associated receptors (TAARs) are a small family of evolutionarily conserved olfactory receptors whose contribution to olfaction remains enigmatic. Here, we show that a majority of the TAARs are mapped to a discrete subset of glomeruli in the dorsal olfactory bulb of the mouse. This TAAR projection is distinct from the previously described class I and class II domains, and is formed by a sensory neuron population that is restricted to express TAAR genes prior to choice. We also show that the dorsal TAAR glomeruli are selectively activated by amines at low concentrations. Our data uncover a hard-wired, parallel input stream in the main olfactory pathway that is specialized for the detection of volatile amines.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Condutos Olfatórios
/
Compostos Orgânicos Voláteis
/
Percepção Olfatória
/
Aminas
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article