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Updated: Nov 11, 2025
Signal Attenuation as a Rat Model of Obsessive Compulsive Disorder
Published on: January 9, 2015
Animal Models for OCD Research
Brittany L Chamberlain1,2, Susanne E Ahmari3,4
1Department of Psychiatry, Translational Neuroscience Program, University of Pittsburgh, Pittsburgh, PA, USA.
Abstract:
OCD has lagged behind other psychiatric illnesses in the identification of molecular treatment targets, due in part to a lack of significant findings in genome-wide association studies. However, while progress in this area is being made, OCD's symptoms of obsessions, compulsions, and anxiety can be deconstructed into distinct neural functions that can be dissected in animal models. Studies in rodents and non-human primates have highlighted the importance of cortico-basal ganglia-thalamic circuits in OCD pathophysiology, and emerging studies in human post-mortem brain tissue point to glutamatergic synapse abnormalities as a potential cellular substrate for observed dysfunctional behaviors. In addition, accumulated evidence points to a potential role for neuromodulators including serotonin and dopamine in both OCD pathology and treatment. Here, we review current efforts to use animal models for the identification of molecules, cell types, and circuits relevant to OCD pathophysiology. We start by describing features of OCD that can be modeled in animals, including circuit abnormalities and genetic findings. We then review different strategies that have been used to study OCD using animal model systems, including transgenic models, circuit manipulations, and dissection of OCD-relevant neural constructs. Finally, we discuss how these findings may ultimately help to develop new treatment strategies for OCD and other related disorders.
Insights
Animal models are crucial for understanding Obsessive-Compulsive Disorder (OCD) pathophysiology. Research highlights cortico-basal ganglia-thalamic circuits and glutamatergic synapses, paving the way for novel OCD treatments.
Area of Science:
- Neuroscience
- Psychiatry
- Genetics
Background:
- Obsessive-Compulsive Disorder (OCD) lacks identified molecular treatment targets, hindering therapeutic advancements.
- Genome-wide association studies have yielded limited findings, necessitating alternative research approaches.
- OCD symptoms can be deconstructed into distinct neural functions amenable to study in animal models.
Purpose of the Study:
- To review current strategies employing animal models for identifying molecules, cell types, and circuits relevant to OCD pathophysiology.
- To explore how findings from animal models can inform the development of new treatments for OCD and related disorders.
Main Methods:
- Review of studies in rodents and non-human primates focusing on cortico-basal ganglia-thalamic circuits.
- Analysis of human post-mortem brain tissue research on glutamatergic synapse abnormalities.
- Examination of animal model systems, including transgenic models and circuit manipulations.
Main Results:
- Cortico-basal ganglia-thalamic circuits are implicated in OCD pathophysiology.
- Glutamatergic synapse abnormalities are suggested as a cellular substrate for OCD behaviors.
- Neuromodulators like serotonin and dopamine play a potential role in OCD pathology and treatment.
Conclusions:
- Animal models offer valuable insights into OCD pathophysiology by dissecting circuit abnormalities and genetic factors.
- Investigating OCD-relevant neural constructs in animal models aids in identifying potential therapeutic targets.
- Findings from animal research hold promise for developing innovative treatment strategies for OCD.
