title: Effect of repeated treatment with desipramine in the behavioral "despair" test in rats: antagonism by "atypical" but not "classical" neuroleptics or antiadrenergic drugs.
abstract: A 7-day treatment with 20 mg/kg/day desipramine reduced the immobility time in the behavioral "despair" test in rats. The effect of DMI was antagonized by sulpiride (100 mg/kg i.p.), metoclopramide (20 mg/kg i.p.) and clopazine (20 mg/kg i.p.) but not by haloperidol (0.5 mg/kg i.p.) or chlorpromazine (5 mg/kg i.p.). Alpha-adrenoreceptor blockers (prazosin 3 mg/kg s.c.; aceperone 10 mg/kg i.p.; azapetine 24 mg/kg s.c.; phentolamine 20 mg/kg i.p.), dl-propranolol (5 mg/kg i.p.) and clonidine (0.1 mg/kg i.p.) failed to modify the anti-immobility effect of DMI. The data suggest that a particular subtype of dopamine receptors is involved in the anti-immobility effect of a 7-day treatment with DMI in the behavioral "despair" test in rats.
mesh_terms: D000317:Adrenergic alpha-Antagonists / Q000494:pharmacology*; D000818:Animals; D014150:Antipsychotic Agents / Q000494:pharmacology*; D002090:Butyrophenones / Q000494:pharmacology; D002746:Chlorpromazine / Q000494:pharmacology; D003000:Clonidine / Q000494:pharmacology; D003024:Clozapine / Q000494:pharmacology; D003866:Depressive Disorder / Q000188:drug therapy*; D003891:Desipramine / Q000627:therapeutic use*; D003984:Dibenzazepines / Q000494:pharmacology; D006220:Haloperidol / Q000494:pharmacology; D006801:Humans; D008297:Male; D008787:Metoclopramide / Q000494:pharmacology; D010646:Phentolamine / Q000494:pharmacology; D011224:Prazosin / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology; D051381:Rats; D013469:Sulpiride / Q000494:pharmacology
chemical_list: D000317:Adrenergic alpha-Antagonists; D014150:Antipsychotic Agents; D002090:Butyrophenones; D003984:Dibenzazepines; D013469:Sulpiride; C004448:azapetine; D011433:Propranolol; D003024:Clozapine; D006220:Haloperidol; D008787:Metoclopramide; D003000:Clonidine; D003891:Desipramine; D002746:Chlorpromazine; D011224:Prazosin; D010646:Phentolamine