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Cholecystokinin octapeptide (CCK-8) administered either systemically (IP) or centrally (ICV) suppresses several types of behavior in mice including exploratory locomotion, rearing and grooming. At doses equimolar to those active for CCK-8, neither desulfated CCK-8 (CCK-8-DS), nor the protected C-terminus tetrapeptide fragment, BOC-CCK-4, is behaviorally(More)
In a variety of in vivo and in vitro tests, cholecystokinin (CCK) has been shown to produce effects that would suggest a functional antagonism of dopamine. On that basis, it has been hypothesized that CCK could have antipsychotic effects. We compared the CCK agonist, A68552, to the antipsychotics haloperidol (HAL), clozapine (CLOZ) and sulpiride (SULP) in(More)
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