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    Social behavior in deer mice as a novel interactive paradigm of relevance for obsessive-compulsive disorder (OCD)

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    Date
    2017
    Author
    Wolmarans, De Wet
    Harvey, Brian H.
    Stein, Dan J.
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    Abstract
    Greater obsessive-compulsive (OC) symptom severity may be associated with poor social adjustment. Rather than possessing deficits in social skill per se, OCD patients may be more socially isolative in the presence of normal controls. We aimed to apply a novel social interaction challenge (SIC) to an established animal model of OCD, viz., the deer mouse, to assess complex social behavior in animals by investigating group sociability and its response to chronic escitalopram treatment (50 mg/kg/day × 28 days), both within and between non (N)- (viz., normal) and high (H)- (viz., OCD-like) stereotypical cohorts. Using automated screening, we scored approach behavior, episodes of proximity, duration of proximity, and relative net weighted movement. H animals socialized more with one another within cohort in all of the above parameters compared to the within-cohort behavior of N animals. Furthermore, the social behavior of H animals toward one another, both within and between cohort demonstrated significant improvements following chronic escitalopram treatment. However, the study also demonstrates that the social interaction between H and N animals remain poor even after chronic escitalopram treatment. To conclude, findings from the current investigation support clinical data demonstrating altered sociability in patients with OCD
    URI
    http://hdl.handle.net/10394/19121
    https://www.tandfonline.com/doi/full/10.1080/17470919.2016.1145594
    https://doi.org/10.1080/17470919.2016.1145594
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