Increase in neurogenesis and behavioural benefit after chronic fluoxetine treatment in Wistar rats
| Autor: | P. Flagstad, A. B. Marcussen, P. E. G. Kristjansen, Ulrica Englund, F. F. Johansen |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Doublecortin Domain Proteins
Male medicine.medical_specialty Doublecortin Protein Hippocampus Cell Count Hippocampal formation Drug Administration Schedule Internal medicine Fluoxetine medicine Reaction Time Animals Rats Wistar Cell Proliferation Neurons biology Behavior Animal Dentate gyrus Neurogenesis Neuropeptides General Medicine Feeding Behavior Doublecortin Rats Endocrinology Ki-67 Antigen Neurology Mechanism of action Bromodeoxyuridine Dentate Gyrus biology.protein Antidepressant Neurology (clinical) medicine.symptom Psychology Microtubule-Associated Proteins Selective Serotonin Reuptake Inhibitors medicine.drug |
| Zdroj: | Acta neurologica Scandinavica. 117(2) |
| ISSN: | 1600-0404 |
| Popis: | Objective - Disturbances in hippocampal neurogenesis may be involved in the pathophysiology of depression and it has been argued that an increase in the generation of new nerve cells in the hippocampus is involved in the mechanism of action of antidepressants. Materials and Methods - Adult Wistar rats were treated with fluoxetine (10 mg/kg) 1 h, daily for 5 (subchronic) or 28 days (chronic) before the Novelty Suppressed Feeding test was performed. Cell proliferation and neurogenesis were analysed using the markers 5-bromo-deoxy-2'-uridine, Ki-67, and doublecortin. Results - A significant behavioural effect was found after 28 days of fluoxetine administration. However, no behavioural improvement was demonstrated after acute and subchronic treatment with fluoxetine. We further demonstrate that chronic antidepressant treatment increases cell proliferation as well as neurogenesis in the dentate gyrus, here using Wistar rats. Conclusions - In further development of antidepressants, neurogenesis may serve as an important parameter to examine the efficacy and mechanism of action of novel drugs. |
| Databáze: | OpenAIRE |
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