Abstract
Alterations of regional brain activity in the prefrontal cortex and in limbic areas have been reported in humans with anxiety disorders. This animal study reports the results of brain perfusion imaging with single photon emission computed tomography (SPECT) in dogs with anxiety disorders. Based on the human literature, we hypothesized altered prefrontal and higher temporal brain perfusion. SPECT acquisitions were performed using the 99mTc-labelled tracer ethyl cysteinate dimer (ECD). Eighteen dogs with pathological anxiety were compared with 18 normally behaving reference dogs. We found, in the group of dogs with anxiety disorders, lower perfusion in the left frontal cortex (p = 0.003), in the subcortical region (p = 0.007) and increased perfusion in the right (p = 0.05) temporal cortex. Taken together, our rCBF findings are suggestive for a dysfunction of the prefrontal cortex and the limbic system in canine anxiety disorders.
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This work was supported by a scientific research grant of the Ghent University Special Research Fund (BOF 07/24 J/152). We would like to express our gratitude the owners of these dogs and to Tiny De Keuster, DVM, Diplomate ECVBM for referral of several cases.
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Vermeire, S., Audenaert, K., Dobbeleir, A. et al. Regional Cerebral Blood Flow Changes in Dogs with Anxiety Disorders, Measured with SPECT. Brain Imaging and Behavior 3, 342–349 (2009). https://doi.org/10.1007/s11682-009-9076-1
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DOI: https://doi.org/10.1007/s11682-009-9076-1