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Titolo: Prevention of the stress-induced increase in frontal cortical dopamine efflux of freely moving rats by long-term treatment with antidepressant drugs
Autori: 
Data di pubblicazione: 2001
Rivista: 
EUROPEAN NEUROPSYCHOPHARMACOLOGY  
Abstract: Use of antidepressant drugs in the treatment of anxiety disorders has recently increased due to the anxiolytic effect of some of these agents. Because dopaminergic transmission in the prefrontal cortex is sensitive to anxiogenic or stressful stimuli, the effects of two antidepressant drugs with different mechanisms of action, imipramine and mirtazapine, on the response of rat cortical dopaminergic neurons to stress were investigated. A 2-week (but not single dose) administration of imipramine (10 mg/kg, i.p., twice daily) or mirtazapine (10 mg/kg, i.p., once daily) reduced and completely antagonized, respectively, the increase in dopamine release in the prefrontal cortex elicited by footshock stress, Long-term administration of imipramine or mirtazapine had no marked effect on the stress-induced increases in the brain or plasma concentrations of neuroactive steroids or corticosterone. An attenuation of the response of mesocortical dopaminergic neurons to stress induced by long-term treatment with antidepressants might contribute to the anxiolytic effects of such drugs. (C) 2001 Elsevier Science B.V. All rights reserved.
Handle: http://hdl.handle.net/11584/101667
Tipologia:1.1 Articolo in rivista

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