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    Parallel information transmission and circuit refinement of the corticostriatal system

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    Attribution-NoDerivatives 4.0 International
    Date Issued
    2016
    Author(s)
    Mokhtari, Ava Kathryn
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    Permanent Link
    https://hdl.handle.net/2144/16990
    Abstract
    The brain is a complex organ that not only gathers copious amounts of information, but also interprets and reacts to information gathered. In the present study we sought to understand how relevant information for a complex experience (cocaine) was transmitted from regions throughout the brain to cocaine-activated striatal cells producing an overall phenotype expected from mice under a strong cocaine experience. To accomplish this, Arc/Ai14 mice were first exposed to repeated prior intra-peritoneal cocaine injections, after which striatal injections of AAV-DIO-TVA adeno-associated virus (AAV) were performed. Post AAV injection, cocaine-activated cells were TRAPed, and finally (EnvA)SAD-ΔG-GFP rabies virus (RV) was injected into the striatum allowing for brain wide monosynaptic retrograde tracing of inputs (cocaine-activated inputs indicated by yellow fluorescence) onto cocaine-activated striatal MSNs. While data is still being tabulated, preliminary data suggests an increase in co-connectivity between cocaine-activated orbitofrontal and medial cortical neurons (retrosplenial/cingulate) and cocaine-activated striatal cells. Thus, preliminary data suggest that chronic cocaine pre-exposure lead to corticostriatal circuit refinement.
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    Attribution-NoDerivatives 4.0 International
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    • Boston University Theses & Dissertations [6981]


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