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• W2795292238 startingPage "316" @default.
• W2795292238 abstract "Stress can either strengthen coping strategies or enhance the risk of depression and anxiety. Synaptic plasticity is one of the key brain functions that can be affected by stress. We have previously shown that early-life stress in the form of maternal separation (MS) impairs functional synaptic plasticity in the medial prefrontal cortex (mPFC), i.e., long-term potentiation (LTP), in adolescent rats. It has been postulated that a previous experience of prolonged stress can modify the response to a subsequent acute stress challenge and influence coping strategies. Therefore, in the present study, we examined how previous MS experience influenced acute stress-induced changes in the LTP and expression of genes and proteins engaged in synaptic plasticity in the mPFC of adolescent rats. To mimic acute stress, we applied acute injections of corticosterone (CORT) and its vehicle (VEH). In control rats, acute CORT injection enhanced LTP in the mPFC. In contrast, MS rats generally exhibited an impairment of LTP that was not further affected by CORT. Moreover, for many studied parameters, such as induction of cFos and Arc mRNA and protein and activation of BDNF, GDNF and NCAM mRNA, MS rats showed diminished, vague or absent responses to acute VEH/CORT compared with those of control rats. These results suggest that previous early-life stress experiences may induce adaptive plasticity within the mPFC, which influences the response to acute stress challenge and coping strategies in adolescents. Depending on the specific environmental context, this phenomenon may lead to either future vulnerability or future resilience to stress-related psychopathologies." @default.
• W2795292238 created "2018-04-06" @default.
• W2795292238 creator A5031667123 @default.
• W2795292238 creator A5058636204 @default.
• W2795292238 creator A5063666331 @default.
• W2795292238 creator A5067063330 @default.
• W2795292238 date "2018-05-01" @default.
• W2795292238 modified "2023-10-17" @default.
• W2795292238 title "Previous Early-life Stress Modifies Acute Corticosterone-induced Synaptic Plasticity in the Medial Prefrontal Cortex of Adolescent Rats" @default.
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• W2795292238 doi "https://doi.org/10.1016/j.neuroscience.2018.03.038" @default.
• W2795292238 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29608944" @default.
• W2795292238 hasPublicationYear "2018" @default.
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