The Journal of pharmacy and pharmacology · 2010
Central nervous system activity of the proanthocyanidin-rich fraction obtained from Croton celtidifolius in rats.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Moreira Eduardo L G, Rial Daniel, Duarte Filipe S, de Carvalho Cristiane Ribeiro, Horst Heros, Pizzolatti Moacir G, Prediger Rui D S, Ribeiro-do-Valle Rosa Maria
Аннотация
OBJECTIVES: The aim of the present study was to evaluate the possible neurobehavioural effects in rats of the proanthocyanidin-rich fraction (PRF) isolated from the bark of Croton celtidifolius (Euphorbiaceae).
METHODS: Adult Wistar rats were treated with the PRF (0.3-30 mg/kg) and evaluated in different behavioural paradigms classically used for the screening of drugs with psychoactive effects.
KEY FINDINGS: Acute intraperitoneal (i.p.) administration of PRF decreased spontaneous locomotor activity (open field arena and activity cage), enhanced the duration of ethyl ether-induced hypnosis, increased the latency to the first convulsion induced by pentylenetetrazole (60 mg/kg, i.p.) and attenuated apomorphine-induced (0.5 mg/kg, i.p.) stereotyped behaviour. In lower doses, PRF (0.3 or 3 mg/kg, i.p.) increased the frequency of open arm entries in the elevated plus-maze test.
CONCLUSIONS: The present findings suggest that the systemic administration of PRF induces a wide spectrum of behavioural alterations in rats, consistent with the putative existence of hypnosedative, anticonvulsant and anxiolytic compounds.
METHODS: Adult Wistar rats were treated with the PRF (0.3-30 mg/kg) and evaluated in different behavioural paradigms classically used for the screening of drugs with psychoactive effects.
KEY FINDINGS: Acute intraperitoneal (i.p.) administration of PRF decreased spontaneous locomotor activity (open field arena and activity cage), enhanced the duration of ethyl ether-induced hypnosis, increased the latency to the first convulsion induced by pentylenetetrazole (60 mg/kg, i.p.) and attenuated apomorphine-induced (0.5 mg/kg, i.p.) stereotyped behaviour. In lower doses, PRF (0.3 or 3 mg/kg, i.p.) increased the frequency of open arm entries in the elevated plus-maze test.
CONCLUSIONS: The present findings suggest that the systemic administration of PRF induces a wide spectrum of behavioural alterations in rats, consistent with the putative existence of hypnosedative, anticonvulsant and anxiolytic compounds.
Предметные рубрики MeSH
Anesthetics, InhalationAnimalsAnti-Anxiety AgentsAnticonvulsantsAntipsychotic AgentsApomorphineBehavior, AnimalCentral Nervous System AgentsConsciousnessCrotonDisease Models, AnimalDose-Response Relationship, DrugEtherHypnotics and SedativesInjections, IntraperitonealMaleMotor ActivityPentylenetetrazolePlant BarkPlant ExtractsProanthocyanidinsRatsRats, WistarSeizuresStereotyped Behavior