Article (Scientific journals)
Brain energization in response to deep brain stimulation of subthalamic nuclei in Parkinson's disease.
Garraux, Gaëtan; Bahri, Mohamed Ali; Lemaire, Christian et al.
2011In Journal of Cerebral Blood Flow and Metabolism
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Keywords :
parkinson's disease; PET; DBS; neurosurgery
Abstract :
[en] Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is an effective treatment in a subgroup of medically refractory patients with Parkinson's disease (PD). Here, we compared resting-state (18)F-fluorodeoxyglucose (FDG) positron emission tomography images in the stimulator off (DBS_OFF) and on (DBS_ON) conditions in eight PD patients in an unmedicated state, on average 2 years after bilateral electrode implantation. Global standardized uptake value (SUV) significantly increased by approximately 11% in response to STN-DBS. To avoid any bias in the voxel-based analysis comparing DBS_ON and DBS_OFF conditions, individual scan intensity was scaled to a region where FDG-SUV did not differ significantly between conditions. The resulting FDG-SUV ratio (FDG-SUVR) was found to increase in many regions in response to STN-DBS including the target area of surgery, caudate nuclei, primary sensorimotor, and associative cortices. Contrary to previous studies, we could not find any regional decrease in FDG-SUVR. These findings were indirectly supported by comparing the extent of areas with depressed FDG-SUVR in DBS_OFF and DBS_ON relatively to 10 normal controls. Altogether, these novel results support the prediction that the effect of STN-DBS on brain activity in PD is unidirectional and consists in an increase in many subcortical and cortical regions.Journal of Cerebral Blood Flow & Metabolism advance online publication, 6 April 2011; doi:10.1038/jcbfm.2011.41.
Research center :
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
Disciplines :
Radiology, nuclear medicine & imaging
Neurology
Author, co-author :
Garraux, Gaëtan  ;  Université de Liège - ULiège > Département des sciences cliniques > Neurologie
Bahri, Mohamed Ali  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Lemaire, Christian ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Degueldre, Christian ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Salmon, Eric  ;  Centre Hospitalier Universitaire de Liège - CHU > Neurochirurgie
KASCHTEN, Bruno 
Language :
English
Title :
Brain energization in response to deep brain stimulation of subthalamic nuclei in Parkinson's disease.
Publication date :
April 2011
Journal title :
Journal of Cerebral Blood Flow and Metabolism
ISSN :
0271-678X
eISSN :
1559-7016
Publisher :
Nature Publishing Group, New York, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Fonds Rahier
Available on ORBi :
since 12 April 2011

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