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• W2892348319 abstract "Neurotrophic factors are regarded as crucial regulatory components in neuronal plasticity and are postulated to play an important role in depression pathology. The abundant expression of brain-derived neurotrophic factor (BDNF) in various brain structures seems to be of particular interest in this context, as downregulation of BDNF is postulated to be correlated with depression and its upregulation is often observed after chronic treatment with common antidepressants. It is well-known that BDNF expression is regulated by cyclic AMP response element-binding protein (CREB). In our previous study using mice lacking CREB in serotonergic neurons (Creb1TPH2CreERT2 mice), we showed that selective CREB ablation in these particular neuronal populations is crucial for drug-resistant phenotypes in the tail suspension test observed after fluoxetine administration in Creb1TPH2CreERT2 mice. The aim of this study was to investigate the molecular changes in the expression of neurotrophins in Creb1TPH2CreERT2 mice after chronic fluoxetine treatment, restricted to the brain structures implicated in depression pathology with profound serotonergic innervation including the prefrontal cortex (PFC) and hippocampus. Here, we show for the first time that BDNF upregulation observed after fluoxetine in the hippocampus or PFC might be dependent on the transcription factor CREB residing, not within these particular structures targeted by serotonergic projections, but exclusively in serotonergic neurons. This observation may shed new light on the neurotrophic hypothesis of depression, where the effects of BDNF observed after antidepressants in the hippocampus and other brain structures were rather thought to be regulated by CREB residing within the same brain structures. Overall, these results provide further evidence for the pivotal role of CREB in serotonergic neurons in maintaining mechanisms of antidepressant drug action by regulation of BDNF levels." @default.
• W2892348319 created "2018-09-27" @default.
• W2892348319 creator A5046400387 @default.
• W2892348319 creator A5069489025 @default.
• W2892348319 creator A5073568711 @default.
• W2892348319 creator A5080760272 @default.
• W2892348319 date "2018-09-20" @default.
• W2892348319 modified "2023-10-17" @default.
• W2892348319 title "Selective Depletion of CREB in Serotonergic Neurons Affects the Upregulation of Brain-Derived Neurotrophic Factor Evoked by Chronic Fluoxetine Treatment" @default.
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• W2892348319 doi "https://doi.org/10.3389/fnins.2018.00637" @default.
• W2892348319 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6158386" @default.
• W2892348319 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30294251" @default.
• W2892348319 hasPublicationYear "2018" @default.
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