期刊
INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY
卷 12, 期 10, 页码 1421-1428出版社
OXFORD UNIV PRESS
DOI: 10.1017/S1461145709990629
关键词
Adult neurogenesis; depression; eszopiclone; fluoxetine; insomnia
资金
- Sepracor Inc.
- United States Public Health Service [MH45481, 2 PO1 MH25642]
- Veterans Administration National Center
- Connecticut Mental Health Center
Clinical research has shown that co-administration of eszopiclone, a sedative-hypnotic sleeping agent, and fluoxetine, a serotonin uptake inhibitor, exerts an additive antidepressant action in treating patients with both depression and insomnia. Preclinical studies demonstrate that the behavioural actions of antidepressants are linked to neurogenesis in the adult hippocampus. To test the hypothesis that the additive effects of eszopiclone and fluoxetine could act via such a mechanism, the influence of combined administration of these agents on the proliferation and survival of bromodeoxyuridine (BrdU)-labelled newborn cells in the hippocampus of adult rats was determined. Chronic eszopiclone + fluoxetine co-administration significantly increased the survival, but not proliferation, of newborn neurons in dorsal hippocampus by approximately 50%, an effect greater than either drug alone. These findings are consistent with the hypothesis that eszopiclone enhances the antidepressant action of fluoxetine, in part via a novel mechanism that increases the survival of newborn neurons.
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