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1.
Arq. bras. endocrinol. metab ; 54(4): 375-380, jun. 2010. ilus, graf
Article in English | LILACS | ID: lil-550707

ABSTRACT

INTRODUSTION: Sibutramine has been described as a drug recommended for treatment of obesity, since it has the ability to inhibit the reuptake of serotonin and noradrenaline in the central nervous system, thereby increasing energy expenditure. OBJECTIVE: Investigate the anxiogenic and anxiolytic effects of acute and chronic treatment with sibutramine in rats submitted to the task of the elevated plus-maze. METHODS: Diazepam was used as a positive control for the anxiolytic effect, and the task of the elevated plus-maze showed sensitivity to detect the effect. In the chronic treatment, sibutramine was ingested for a period of two months. RESULTS: The acute and chronic treatments at the studied dose, which is described to produce a maximum effect of anti-obesity in rats, did not interfere with anxiety. CONCLUSIONS: The acute and chronic administration of sibutramine is not related to anxiolytic or anxiogenic effects.


INTRODUÇÃO: A sibutramina tem sido descrita como um fármaco recomendado para o tratamento da obesidade, uma vez que tem a capacidade de inibir a recaptação de serotonina e noradrenalina no sistema nervoso central, aumentando assim o gasto energético. OBJETIVO: Investigar os efeitos ansiogênico e ansiolítico dos tratamentos agudo e crônico com a sibutramina em ratos Wistar submetidos à tarefa do labirinto em cruz elevado. MÉTODOS: O diazepam foi usado como controle positivo para o efeito ansiolítico, e a tarefa do labirinto em cruz elevado apresentou sensibilidade para detectar o efeito. No tratamento crônico, a sibutramina foi ingerida por um período de dois meses. RESULTADOS: Os tratamentos agudo e crônico, na dose estudada, que é descrita para produzir um efeito de antiobesidade máxima em ratos, não interferem na ansiedade. CONCLUSÕES: As administrações aguda e crônica de sibutramina não estão relacionadas aos efeitos ansiolítico ou ansiogênico.


Subject(s)
Animals , Male , Rats , Anti-Anxiety Agents/pharmacology , Anti-Obesity Agents/pharmacology , Anxiety/drug therapy , Cyclobutanes/pharmacology , Analysis of Variance , Anti-Anxiety Agents/adverse effects , Anti-Obesity Agents/adverse effects , Body Weight/drug effects , Disease Models, Animal , Maze Learning/drug effects , Motor Activity/drug effects , Random Allocation , Rats, Wistar
2.
Ciênc. cult. (Säo Paulo) ; 47(3): 131-6, May-Jun. 1995. tab
Article in English | LILACS | ID: lil-191370

ABSTRACT

This review aimed at discussing the protocols used to characterize and to distinguish ATP diphosphohydrolases from other enzymes which can promote the degradation of ATP and ADP, since there is a confusion about the identily of this enzyme and ATPases.


Subject(s)
Adenosine Triphosphate , Apyrase , Adenosine Triphosphatases/antagonists & inhibitors , Adenosine Triphosphate/isolation & purification , Apyrase/isolation & purification , Apyrase/metabolism
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