Published in:
01-06-2015 | Research Article
Hippocampal Deep Brain Stimulation Reduces Glucose Utilization in the Healthy Rat Brain
Authors:
Nathalie Van Den Berge, Vincent Keereman, Christian Vanhove, Bregt Van Nieuwenhuyse, Pieter van Mierlo, Robrecht Raedt, Kristl Vonck, Paul Boon, Roel Van Holen
Published in:
Molecular Imaging and Biology
|
Issue 3/2015
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Abstract
Purpose
The effects of deep brain stimulation (DBS) have been studied primarily by cellular studies, which lack the ability to elucidate DBS-related responses on a whole-brain scale. 2-Deoxy-2-[18F]fluoro-d-glucose positron emission tomography ([18F]FDG-PET) reflects changes in neural activity throughout the entire brain volume. The aim of this study was to investigate the whole-brain effect of DBS on the glucose utilization in healthy rats.
Procedures
Seven rats were implanted with a DBS electrode in the right hippocampus and injected with [18F]FDG to measure the glucose metabolism during DBS.
Results
Analysis reveals significant DBS-induced decreases in the glucose metabolism in the bilateral hippocampus and other limbic structures.
Conclusions
This study demonstrates that DBS exhibits not only a local effect around the electrode tip but also in other limbic regions. [18F]FDG-PET studies have the potential to provide better insight into the mechanism of action of DBS by simultaneously observing activity at multiple sites in the brain.