Nucleus Reuniens Lesion and Antidepressant Treatment Prevent Hippocampal Neurostructural Alterations Induced by Chronic Mild Stress in Male Rats
| Autor: | Nuno Sousa, Ioannis Sotiropoulos, Vasilios Kafetzopoulos, Christina Dalla, Katerina Antoniou, Nikolaos Kokras |
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| Rok vydání: | 2021 |
| Předmět: |
Male
0301 basic medicine medicine.medical_specialty Midline Thalamic Nuclei Prefrontal Cortex Hippocampus Hippocampal formation Lesion 03 medical and health sciences 0302 clinical medicine Internal medicine Neural Pathways Neuroplasticity medicine Animals Chronic stress Prefrontal cortex business.industry General Neuroscience Antidepressive Agents Rats 030104 developmental biology Endocrinology Antidepressant Nucleus reuniens medicine.symptom business 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience. 454:85-93 |
| ISSN: | 0306-4522 |
| DOI: | 10.1016/j.neuroscience.2020.08.017 |
| Popis: | The hippocampus-prefrontal cortex circuit plays a major role in stress and in the neurobiology of depression and its treatment. Disruption of this circuit by lesioning the thalamic nucleus reuniens (RE) has been shown to prevent the detrimental effects of chronic mild stress on prefrontal cortex neuroplasticity indices in male rats. However, it remains unknown whether hippocampal neurostructural response to stress is modified by RE lesion. In the present study, adult male rats were subjected to the chronic mild stress model of depression and were treated with either vehicle or an antidepressant (i.e. sertraline). Moreover, a group of animals was subjected to RE lesion before stress exposure with or without sertraline treatment. We demonstrated that chronic mild stress induced hippocampal CA1 dendritic atrophy and this was prevented by pre-stress RE lesion to the same extent that antidepressant treatment reversed it. The present findings highlight the importance of hippocampal-prefrontal cortex communication in chronic stress effects on hippocampal neuroplasticity and contribute to the elucidation of the role of RE in neurostructural changes underlying stress-driven depression and its treatment. |
| Databáze: | OpenAIRE |
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