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• W2938961713 endingPage "1984" @default.
• W2938961713 startingPage "1975" @default.
• W2938961713 abstract "Prepulse inhibition (PPI) of startle response is a measure of sensorimotor gating that is impaired in schizophrenia and in many other clinical conditions. Rat models using pharmacological or surgical strategies reveal that PPI is modulated by the cortico-striatal-pallido-thalamic (CSPT) circuit. Here, we explore whether spontaneous variation in PPI in intact inbred and outbred rats is associated with functional and structural differences in the CSPT circuit. Inbred Roman High-(RHA) and Low-avoidance (RLA) and outbred heterogeneous stock (HS) rats were assessed for PPI, brain activity, and brain volume. Brain activity was assessed by c-Fos expression and brain volume by magnetic resonance imaging. Relevant structures of the CSPT circuit were evaluated, such as the medial prefrontal cortex (mPFC), cingulate cortex, hippocampus (HPC), amygdala, nucleus accumbens (NAc), and dorsal striatum. RHA showed lower PPI than RLA rats, while HS rats were stratified by their PPI levels in three groups. Reduced PPI was accompanied by decreased mPFC activity in Roman and HS rats and increased NAc shell activity in HS rats. Low PPI was also associated with decreased mPFC and HPC volumes in Roman and HS rats. This study reports a consistent relationship between decreased function and volume of the mPFC and spontaneous low-PPI levels in inbred and outbred intact rats. Moreover, our findings suggest that, apart from a hypoactive and smaller mPFC, a hyperactive NAc and smaller HPC may underlie reduced PPI levels. Our results support the notion that sensorimotor gating is modulated by forebrain structures and highlight the importance of the mPFC in its regulation." @default.
• W2938961713 created "2019-04-25" @default.
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• W2938961713 date "2019-04-16" @default.
• W2938961713 modified "2023-10-18" @default.
• W2938961713 title "Schizophrenia-like reduced sensorimotor gating in intact inbred and outbred rats is associated with decreased medial prefrontal cortex activity and volume" @default.
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• W2938961713 doi "https://doi.org/10.1038/s41386-019-0392-x" @default.
• W2938961713 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6784988" @default.
• W2938961713 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30986819" @default.
• W2938961713 hasPublicationYear "2019" @default.
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