Methyl-CpG binding protein 2 functional alterations provide vulnerability to develop behavioral and molecular features of post-traumatic stress disorder in male mice
Post-traumatic stress disorder (PTSD) is a mental disorder characterized by symptoms of persistent anxiety arising after exposure to traumatic events. Stress susceptibility due to a complex interplay between genetic and environmental factors plays a major role in the disease etiology, although biolo...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
06 June 2019
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| In: |
Neuropharmacology
Year: 2019, Jahrgang: 160, Pages: 1-7 |
| ISSN: | 1873-7064 |
| DOI: | 10.1016/j.neuropharm.2019.06.003 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1016/j.neuropharm.2019.06.003 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0028390819302102 
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| Verfasserangaben: | Livia Cosentino, Daniele Vigli, Vanessa Medici, Herta Flor, Marco Lucarelli, Andrea Fuso, Bianca De Filippis |
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| 245 | 1 | 0 | |a Methyl-CpG binding protein 2 functional alterations provide vulnerability to develop behavioral and molecular features of post-traumatic stress disorder in male mice |c Livia Cosentino, Daniele Vigli, Vanessa Medici, Herta Flor, Marco Lucarelli, Andrea Fuso, Bianca De Filippis |
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| 520 | |a Post-traumatic stress disorder (PTSD) is a mental disorder characterized by symptoms of persistent anxiety arising after exposure to traumatic events. Stress susceptibility due to a complex interplay between genetic and environmental factors plays a major role in the disease etiology, although biological underpinnings have not been clarified. We hypothesized that aberrant functionality of the methyl-CpG binding protein 2 (MECP2), a master regulator of experience-dependent epigenetic programming, confers susceptibility to develop PTSD-like symptomatology in the aftermath of traumatic events. Transgenic male mice expressing a truncated form of MeCP2 protein (MeCP2-308) were exposed at adulthood to a trauma in the form of high-intensity footshocks. The presence and duration of PTSD-like symptoms were assessed and compared to those of trauma-exposed wild type littermates and MeCP2-308 mice subjected to a mild stressor. The effects of fluoxetine, a prime pharmacological PTSD treatment, on PTSD-like symptomatology were also explored. Trauma-exposed MeCP2-308 mice showed long-lasting hyperresponsiveness to both correct and incorrect predictors of the trauma and persistent increased avoidance of trauma-related cues. Traumatized MeCP2-308 mice also displayed abnormal post-traumatic plasma levels of the stress hormone corticosterone and altered peripheral gene expression mirroring that of PTSD patients. Fluoxetine improved PTSD-like symptoms in trauma-exposed MeCP2-308 mice. These findings provide evidence that MeCP2 dysfunction results in increased susceptibility to develop PTSD-like symptoms after trauma exposure, and identify trauma-exposed MeCP2-308 mice as a new tool to investigate the underpinnings of PTSD vulnerability. | ||
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| 700 | 1 | |a Medici, Vanessa |e VerfasserIn |4 aut | |
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| 700 | 1 | |a De Filippis, Bianca |e VerfasserIn |4 aut | |
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