Modulation of food and water intake by catecholamines injected into the lateral ventricle of the pigeon brain
Braz. j. med. biol. res
; 25(8): 841-4, 1992. tab
Article
em En
| LILACS
| ID: lil-113579
Biblioteca responsável:
BR26.1
ABSTRACT
The effects of noradrenaline, adrenaline and dopamine on food and water intake were investigated in satiated (food ad libitum) adult pigeons weighing 320-360 g (N+10 per group). Catecholamines (80 nmol in 1 ul of saline) were injected into the right lateral ventricle. A significant increase in food consumption during the first hour was induced only by noradrenaline (8.1 ñ 1.8 g) and adrenaline (8.0 ñ 2.7 g) vs 1.9 ñ 0.6 g for the saline control. Noradrenaline also caused a significant drop during the secondar hour (1.7 ñ 0.6 g for the saline control). Dopamine decreased food intake at 2 h (1.4 ñ 0.3 g vs 3.5 ñ 0.7 g for the saline control) and 3 h (1.4 ñ 0.4 g vs 3.2 ñ 0.7 g for the saline control) post-injection, with a subsequent elevation in the feeding response during the 4th h (4.9 ñ 0.9 g vs 2.6 ñ 0.7 gf for the saline control). The total food ingestion for the 6-h period was similar for the control and experimental groups. Water consumption was not significantly affected by any catecholamine during any specific period but total ingestion was increased by noradrenaline (44.7 ñ 3.0 ml vs 29.6 ñ 5.1 ml for the saline control). These results suggest that catecholamines are involved in the neural control of food, but not water, intake in pigeons
Buscar no Google
Índice:
LILACS
Assunto principal:
Columbidae
/
Catecolaminas
/
Dopamina
/
Epinefrina
/
Norepinefrina
/
Ingestão de Líquidos
/
Ingestão de Alimentos
/
Cérebro
/
Injeções Intraventriculares
Idioma:
En
Revista:
Braz. j. med. biol. res
Assunto da revista:
BIOLOGIA
/
MEDICINA
Ano de publicação:
1992
Tipo de documento:
Article