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Arq. méd. ABC ; 29(1): 49-53, jan.-jun. 2004. ilus, tab
Article in Portuguese | LILACS | ID: lil-457902

ABSTRACT

Objetivo: Avaliar a eficácia da fluoxetina e venlafaxina no tratamento do comportamento alimentar compulsivo tipo ‘binge” induzido por restrição de espaço, em ratos. Material e método: Foram utilizados 120 ratos, subdivididos em grupos de acordo com a droga utilizada (controle, fluoxetina ou venlafaxina), os tipos de alimentação (dieta livre ou regrada) e gaiolas utilizadas (tamanho padrão ou de espaço restrito) . Resultados: Os ratos mostraram hiperfagia rebote quando foram submetidos à dieta restrita (2 horas/dia por 7 dias). A hiperfagia foi aumentada quando os ratos foram colocados na gaiola de espaço restrito, tendo sua mobilidade diminuída. Apenas o grupo em que foi administrada venlafaxina apresentou diminuição do “binge” pela restrição de espaço. Conclusão: O tratamento com fluoxetina foi incapaz de alterar o comportamento do tipo “binge” induzido em ratos, já a venlafaxina, sob as mesmas condições, reduziu este comportamento.


Background: studies have suggested that people who suffer from bulimia nervosa show signs of reduced serotonin activity, which may be related to binge-eating. Objective: to evaluate fluoxetine and venlafaxine efficacy in treatment of binge eating induced byspace restriction in rats. Methods and materials: Were studied 120 rats, divided according to the administrated drug (control, fluoxetine or venlafaxine), feeding types (free feeding or scheduled feeding) and cages (home cages or space-restricted cages). Results: the rats showed rebound hyperphagic state when they were released from scheduled feeding. The hyperphagia was further enhancedwhen they were put in a space-estricted cage where their mobility was restricted. Only the group that received venlafaxine showed decrease in binge eating induced by space restriction. Conclusion: the treatment with fluoxetine was enable to change the binge eating in rats, however venlafaxine, at same conditions, reduced this behaviour.


Subject(s)
Male , Rats , Antidepressive Agents , Compulsive Behavior , Feeding Behavior , Fluoxetine , Hyperphagia , Rats, Wistar
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