TY - JOUR N2 - To determine if reported reductions of regional cerebral metabolic rates for glucose (rCMRglc) induced by the tryciclic antidepressant clomipramine (CMI) (10 mg/kg) are due to a presynaptic action on serotonin (5-HT) terminals, 3-month-old Fischer-344 rats were given parachloroamphetamine (PCA), a serotonin neurotoxin. rCMRglc was measured 3 weeks later in 55 brain regions after the administration of saline or CMI using the quantitative autoradiographic [14C]2-deoxyglucose procedure. PCA alone increased rCMRglc in the visual cortex. CMI alone reduced rCMRglc in 18 (33%) of the studied regions, including telencephalic, diencephalic, limbic, and brain stem areas. In PCA-lesioned rats, metabolic responses to CMI (10 mg/kg) were greatly reduced, and significant rCMRglc decreases were observed only in 4 (7%) of the brain areas, including the hippocampus and raphe nuclei. Abolition by PCA of the metabolic responses to CMI confirms that CMI, at the dose studied, reduces rCMRglc via a presynaptic mechanism, likely the 5-HT reuptake sites. SP - 2015 PB - Nature Publishing Group SN - 0893-133X A1 - Freo, Ulderico A1 - Pietrini, Pietro A1 - Pizzolato, Gilberto A1 - Merico, Antonio A1 - Ruggero, Susanna A1 - Dam, Mauro A1 - Battistin, Leontino IS - 13 JF - Neuropsychopharmacology UR - http://dx.doi.org/10.1016/0893-133X(95)00053-G Y1 - 1995/// TI - Cerebral Metabolic Responses to Clomipramine Are Greatly Reduced Following Pretreatment with the Specific Serotonin Neurotoxin Para-Chloroamphetamine (PCA) AV - none EP - 222 N1 - Fulltext available on publisher's website ID - eprints3341 ER -