Dental afferents project onto gustatory neurons in the nucleus of the solitary tract.
J Dent Res
; 91(2): 215-20, 2012 Feb.
Article
em En
| MEDLINE
| ID: mdl-22116981
ABSTRACT
The aim of this study was to investigate the inferior alveolar nerve (IAN) and chorda tympani (CT) projections onto gustatory neurons of the nucleus of the solitary tract (NST) in the rat by immunochemical and electrophysiological techniques. IAN afferents were retrogradely labeled. NST neurons were labeled either by retrograde tracer injection into the parabrachial nucleus (PBN) or by c-Fos mapping after CT activation. NST neurons responding to tastant stimulation were recorded in vivo before and after electrical stimulation of the IAN. Results from the immunolabeling approach showed IAN boutons "en passant" apposed to retrogradely labeled neurons from PBN and to CT-activated neurons in the NST. Recordings of single NST neurons showed that the electrical stimulation of the IAN significantly decreased CT gustatory responses. Analysis of these data provides an anatomical and physiological basis to support trigeminal dental and gustatory interactions within the brainstem.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Células Receptoras Sensoriais
/
Paladar
/
Nervo da Corda do Tímpano
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Núcleo Solitário
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Nervo Mandibular
/
Neurônios Aferentes
Limite:
Animals
Idioma:
En
Revista:
J Dent Res
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
França