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Titolo:
Integration of gastric distension and gustatory responses in the parabrachial nucleus
Autore:
Baird, JP; Travers, SP; Travers, JB;
Indirizzi:
Ohio State Univ, Coll Dent, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 , Coll Dent, Columbus, OH 43210 USA
Titolo Testata:
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY
fascicolo: 5, volume: 281, anno: 2001,
pagine: R1581 - R1593
SICI:
0363-6119(200111)281:5<R1581:IOGDAG>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
TASTE-EVOKED ACTIVITY; SOLITARY TRACT; CENTRAL REPRESENTATION; OPIOID RECEPTORS; NEURAL ACTIVITY; HEPATIC-VAGAL; RAT NUCLEUS; BRAIN-STEM; AWAKE RATS; NEURONS;
Keywords:
nucleus of the solitary tract; electrophysiology; satiation; satiety; rat; stomach;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Baird, JP Coll Dent, POB 182357,305 W 12th Ave, Columbus, OH 43218 USA Coll Dent POB 182357,305 W 12th Ave Columbus OH USA 43218 18 USA
Citazione:
J.P. Baird et al., "Integration of gastric distension and gustatory responses in the parabrachial nucleus", AM J P-REG, 281(5), 2001, pp. R1581-R1593

Abstract

Palatable gustatory stimuli promote feeding, whereas gastric distension generally inhibits this behavior. We explored a neural basis for integration of these opposing sensory signals by evaluating the effect of gastric distension on gustatory responses in the parabrachial nucleus (PBN) of anesthetized rats. Sixteen percent of 92 taste cells were coactivated; they responded to independent taste or gastric distension stimulus application. Modulation of taste responses by distension was more prevalent; taste responses declined 37% in response to distension in 25% of the cells and increased by 46% in 10% of cells. Across the whole population, however, the suppressive effect of distension on taste responses was small (6%). The incidence of modulation did not vary as a simple hedonic function of gustatory sensitivity, i.e., similar proportions of sucrose-, citric- acid-, and QHCl- best, but not NaCl-best, neurons were modulated by gastric distension. Coactivated, modulated, and nonmodulated gustatory-responsive cells were intermingled in the gustatory zone of the caudal PBN. The suppression of PBN taste responsesby visceral stimulation may reflect a mechanism for satiation and further implicates the PBN in the control of ingestive function.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 10:25:20