Potentiation of Haloperidol-induced Catalepsy by Beta-Adrenoceptor Antagonists in Mice

Piracetam reverses haloperidol-induced catalepsy in mice

Results: Th e administration of haloperidol (2 mg/kg, IP) resulted in signifi cant catalepsy. Piracetam (in dosages of 50, 100, and 300 mg/kg) given IP at the time of haloperidol administration reduced the duration of catalepsy by 24.4%, 32.3%, and 48.2%, respectively. Piracetam given as a 30-min pretreatment reduced the duration of catalepsy by 59.5%, 72.3%, and 78.2%, respectively. Vinpocetin...

Effect of Tribulus terrestris on Haloperidol-induced Catalepsy in Mice

Haloperidol, an antipsychotic drug, leads to the development of a behavioural state called catalepsy, in which the animal is not able to correct an externally imposed posture. In the present study we have attempted to evaluate the anticataleptic effect of Tribulus terrestris on haloperidol-induced catalepsy in albino mice. Mice were allocated to four groups, each group containing six animals. B...

INFLUENCES OF DIFFERENT ADRENOCEPTOR AGONISTS AND ANTAGONISTS ON AMPHETAMINE- INDUCED CLIMBING IN MICE

Administration of apomorphine and amphetamine induces climbing behavior in mice due to stimulation of brain dopamine receptors. In the present study, the effects of adrenoceptor agonists and antagonists on amphetamine-induced climbing have been investigated. Intraperitoneal (i.p.) injection of different doses of amphetamine (2,4 and 8 mglkg) induced climbing in mice (p<O.OOO 1). The u2- ad...

Tolerance and reverse tolerance to haloperidol catalepsy induced by the difference of administration interval in mice.

Ginkgo biloba leaf extract (EGb 761) enhances catalepsy induced by haloperidol and L-nitroarginine in mice.

Ginkgo biloba extract EGb 761 has been reported to have therapeutic effects which have been attributed to anti-oxidant and free radical-scavenging activities, including a direct action on nitric oxide production. L G-nitro-arginine (L-NOARG), a nitric oxide synthase inhibitor, and haloperidol, a drug that blocks dopamine receptors, are both known to induce catalepsy in rodents. Nitric oxide has...