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1.
Neurosci Biobehav Rev ; 6(2): 195-204, 1982.
Artículo en Inglés | MEDLINE | ID: mdl-6285235

RESUMEN

When dopamine-beta-hydroxylase is inhibited with FLA-63 (10 mg/kg) free feeding behavior is disrupted in satiated rats. While the average number of meals taken was not different from vehicle injected controls, meal size was decreased 58% in the first 9 hr after treatment with FLA-63. In starved animals, FLA-63, when given alone, produced little effect on feeding behavior, even though norepinephrine depletion was in excess of 40%. When given in combination with RO4-1284 (5 mg/kg), a vesicular reuptake inhibitor, feeding was reduced to 16% of control intake and norepinephrine was specifically depleted 99%. Feeding was reliably reinstated in animals which received FLA-63 plus RO4-1284 with either dl-threo-DOPs, a metabolic precursor to NE, or direct intrahypothalamic injections of NE. These findings suggest that the feeding inhibition observed after treatment with FLA-63 plus RO4-1284 is due to disruption of transmission in brain NE systems. A non-anorectic dosage of L110-140 (3.73 mg/kg), a specific FLA-63. Taken collectively, these findings suggest that the primary role of NE in feeding is maintenance of the consummatory response and that these effects are expressed in relation to activity in other neurochemical systems.


Asunto(s)
Conducta Alimentaria/fisiología , Fenómenos Fisiológicos del Sistema Nervioso , Norepinefrina/fisiología , 2-etil-1,3,4,6,7,11b-hexahidro-3-isobutil-9,10-dimetoxi-2H-benzo(a)quinolizin-2-ol/farmacología , Animales , Disulfuro de Bis(4-Metil-1-Homopiperaziniltiocarbonilo)/farmacología , Dopamina/fisiología , Droxidopa/farmacología , Conducta Alimentaria/efectos de los fármacos , Fluoxetina/farmacología , Hipotálamo/efectos de los fármacos , Hipotálamo/fisiología , Masculino , Muridae , Pargilina/farmacología , Ratas , Ratas Endogámicas , Receptores Adrenérgicos alfa/fisiología
9.
Science ; 154(3749): 649, 1966 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-5950999

RESUMEN

The activity of monoamine oxidase was estimated in the hypothalamus, amygdala, and frontal cortex of adult female rats during the estrous cycle. Enzymatic activity in all three areas of brain was at its lowest during the diestrus phase of the estrous cycle and progressively increased to its highest during estrus. Throughout the estrous cycle the greatest activity of monoamine oxidase was found in the hypothalamus, as compared with the other brain areas. The significance of the activity is discussed.


Asunto(s)
Amígdala del Cerebelo/metabolismo , Estro , Lóbulo Frontal/metabolismo , Hipotálamo/metabolismo , Monoaminooxidasa/metabolismo , Animales , Femenino , Embarazo , Ratas
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