Water deprivation and the double- depletion hypothesis: common neural mechanisms underlie thirst and salt appetite
Título del documento: Water deprivation and the double- depletion hypothesis: common neural mechanisms underlie thirst and salt appetite
Revista: Brazilian journal of medical and biological research
Base de datos: PERIÓDICA
Número de sistema: 000350351
ISSN: 0100-879X
Autores: 1
2
1
1
1
1
1
Instituciones: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Odontologia, Araraquara, Sao Paulo. Brasil
2Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Ciencias Farmaceuticas, Araraquara, Sao Paulo. Brasil
Año:
Periodo: May
Volumen: 40
Número: 5
Paginación: 707-712
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Water deprivation-induced thirst is explained by the double-depletion hypothesis, which predicts that dehydration of the two major body fluid compartments, the extracellular and intracellular compartments, activates signals that combine centrally to induce water intake. However, sodium appetite is also elicited by water deprivation. In this brief review, we stress the importance of the water-depletion and partial extracellular fluid-repletion protocol which permits the distinction between sodium appetite and thirst. Consistent enhancement or a de novo production of sodium intake induced by deactivation of inhibitory nuclei (e.g., lateral parabrachial nucleus) or hormones (oxytocin, atrial natriuretic peptide), in water-deprived, extracellular-dehydrated or, contrary to tradition, intracellular-dehydrated rats, suggests that sodium appetite and thirst share more mechanisms than previously thought. Water deprivation has physiological and health effects in humans that might be related to the salt craving shown by our species
Disciplinas: Medicina
Palabras clave: Fisiología humana,
Neurología,
Privación de agua,
Deshidratación,
Apetito,
Sodio
Keyword: Medicine,
Human physiology,
Neurology,
Water deprivation,
Dehydration,
Appetite,
Sodium
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