PMID- 10700602 OWN - NLM STAT- MEDLINE DCOM- 20000425 LR - 20221207 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 858 IP - 1 DP - 2000 Mar 6 TI - Comparative study of fluoxetine, sibutramine, sertraline and dexfenfluramine on the morphology of serotonergic nerve terminals using serotonin immunohistochemistry. PG - 92-105 AB - We compared the effects of treatment with high doses of fluoxetine, sibutramine, sertraline, and dexfenfluramine for 4 days on brain serotonergic nerve terminals in rats. Methylenedioxymethamphetamine (MDMA) and 5,7-dihydroxytryptamine (5,7-DHT) were used as positive controls because both compounds deplete brain serotonin. Food intake and body weight changes were also monitored and yoked, pair-fed animals were used to control for possible changes in morphology due to nutritional deficits. Fluoxetine, sibutramine, sertraline and dexfenfluramine all produced a significant reduction in body weight. Fluoxetine, sibutramine and sertraline treatment resulted in no depletion of brain serotonin but produced morphological abnormalities in the serotonergic immunoreactive nerve network. In contrast, dexfenfluramine and MDMA depleted brain serotonin and produced morphological changes in the serotonin nerve network. These results indicate that even though fluoxetine, sibutramine and sertraline do not deplete brain serotonin, they do produce morphological changes in several brain regions (as identified by serotonin immunohistochemistry). Dexfenfluramine and MDMA, on the other hand, markedly deplete brain serotonin and also produce morphological changes. Collectively, these results lend support to the concept that all compounds acting on brain serotonin systems, whether capable of producing serotonin depletion or not, could produce similar effects on the morphology of cerebral serotonin systems. FAU - Kalia, M AU - Kalia M AD - Department of Biochemistry, Molecular Pharmacology and Anesthesiology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA. mkalia@msn.com FAU - O'Callaghan, J P AU - O'Callaghan JP FAU - Miller, D B AU - Miller DB FAU - Kramer, M AU - Kramer M LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Appetite Depressants) RN - 0 (Cyclobutanes) RN - 0 (Serotonin Agents) RN - 0 (Serotonin Receptor Agonists) RN - 0 (Serotonin Uptake Inhibitors) RN - 01K63SUP8D (Fluoxetine) RN - 333DO1RDJY (Serotonin) RN - E35R3G56OV (Dexfenfluramine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - QUC7NX6WMB (Sertraline) RN - WV5EC51866 (sibutramine) SB - IM MH - Animals MH - Appetite Depressants/pharmacology MH - Body Weight/drug effects MH - Cyclobutanes/pharmacology MH - Dexfenfluramine/pharmacology MH - Eating/drug effects MH - Fluoxetine/pharmacology MH - Immunohistochemistry MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/pharmacology MH - Prefrontal Cortex/drug effects/metabolism/pathology MH - Presynaptic Terminals/*drug effects/*ultrastructure MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin/*metabolism MH - Serotonin Agents/*pharmacology MH - Serotonin Receptor Agonists/pharmacology MH - Selective Serotonin Reuptake Inhibitors/pharmacology MH - Sertraline/pharmacology EDAT- 2000/03/04 09:00 MHDA- 2000/04/29 09:00 CRDT- 2000/03/04 09:00 PHST- 2000/03/04 09:00 [pubmed] PHST- 2000/04/29 09:00 [medline] PHST- 2000/03/04 09:00 [entrez] AID - S0006-8993(99)02430-0 [pii] AID - 10.1016/s0006-8993(99)02430-0 [doi] PST - ppublish SO - Brain Res. 2000 Mar 6;858(1):92-105. doi: 10.1016/s0006-8993(99)02430-0.