The effect of chronic (14 days) administration of the serotonin 5-HT(1A) receptors agonist 8-OH-DPAT (0.05 mg/kg, s.c.) and the 5-HT(1A) receptors antagonist NAN-190 (0.1 mg/kg, i.p.) alone or in combination with the acetylcholinesterase inhibitor galantamine (1.0 mg/kg, i.p.) on depression and anxiety was studied in old (24 months) male rats with dementia of Alzheimer's type. The results indicated that chronic combined administration of 8-OH-DPAT with galantamine resulted in pronounced antidepressant and anxiolytic action.
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