期刊
NEURON
卷 94, 期 1, 页码 153-+出版社
CELL PRESS
DOI: 10.1016/j.neuron.2017.03.019
关键词
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资金
- NIMH [F32-MH106265, ROIMH096274, R01MH101218, R01MH096274, R01MH100561, R01MH077235, R41MH10089]
- NEI [DP1EY024503, R01EY011787]
- DARPA SIMPLEX [N66001-15-C-4032]
- ARO MURI [W911NF-12-1-0594]
- NARSAD [19944]
In schizophrenia, brain-wide alterations have been identified at the molecular and cellular levels, yet how these phenomena affect cortical circuit activity remains unclear. We studied two mouse models of schizophrenia-relevant disease processes: chronic ketamine (KET) administration and Df(16) A(+/-), modeling 22q11.2 microdeletions, a genetic variant highly penetrant for schizophrenia. Local field potential recordings in visual cortex confirmed gammaband abnormalities similar to patient studies. Twophoton calciumimaging of local cortical populations revealed in both models a deficit in the reliability of neuronal coactivity patterns (ensembles), which was not a simple consequence of altered singleneuron activity. This effect was present in ongoing and sensory-evoked activity and was not replicated by acute ketamine administration or pharmacogenetic parvalbumin-interneuron suppression. These results are consistent with the hypothesis that schizophrenia is an `` attractor'' disease and demonstrate that degraded neuronal ensembles are a common consequence of diverse genetic, cellular, and synaptic alterations seen in chronic schizophrenia.
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