Abstract
Adult rats submitted to a protein deprivation schedule at perinatal age (from 14th day of fetal life until 50 days of age) and then recovered on balanced chow (D rats) were assayed in the elevated plus-maze test for anticonflict effects of diazepam and drugs with therapeutic efficacy in panic disorders as compared with controls (C rats). Diazepam and alprazolam showed a similar anticonflict effect in D rats than in C rats. In contrast, buspirone, which was ineffective in C rats at a wide dosage range, showed a significant anticonflict effect on D rats at 0.3 mg/kg. Neither propranolol, desipramine, nor phenelzine treatment (10 mg/kg/day during 3–7 days) induced anticonflict effect in C rats. Conversely, these treatments fostered a significant and selective anxiolytic effect on D rats. Such results underscore long-lasting alterations caused by early undernutrition, namely, changes in reactivity to the drugs assayed. In addition, perinatally deprived rats may represent a useful animal model for studying potential antipanic agents.
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