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Attenuation of compulsive-like behavior by fluvoxamine in a non-induced mouse model of obsessive–compulsive disorder

Mitra, Swarupa,c; Bult-Ito, Abelb

doi: 10.1097/FBP.0000000000000348

The current study evaluated the role of strain and compulsive trait differences in response to fluvoxamine, a common obsessive–compulsive disorder (OCD) drug, in two different mouse strains (BIG1 and BIG2) with a spontaneous compulsive-like phenotype. For compulsive-like nest-building behavior, dose-dependent attenuation of nesting by fluvoxamine was observed for the BIG1 compulsive-like strain during the first hour after administration. No significant differences were found for the BIG2 strain during the first hour, although a dose-dependent trend similar to that in the BIG1 strain was observed. Fluvoxamine dose dependently decreased the number of marbles buried in both strains 1 h after administration. For anxiety-like behaviors in the open field, no significant drug effects were found for the latency to leave the center and the number of line crossings. Significant strain differences were observed, with the BIG2 strain showing higher anxiety-like behaviors and reduced locomotor activity compared with the BIG1 strain. Consequently, this study adds predictive validity to our mouse model of OCD, whereas the anxiety-like differences between the strains add heterogeneity to our mouse model, similar to the heterogeneity observed in OCD.

Departments of aChemistry & Biochemistry

bBiology & Wildlife

cIDeA Network of Biomedical Research Excellence (INBRE), University of Alaska Fairbanks, Fairbanks, Alaska, USA

Correspondence to Abel Bult-Ito, PhD, Department of Biology and Wildlife, University of Alaska Fairbanks, PO Box 756100, Fairbanks, AK 99775-6100, USA E-mail:

Received September 13, 2016

Accepted August 12, 2017

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