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Imaging brain functional and metabolic changes in restless legs syndrome.
MedLine Citation:
PMID:  23881621     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Even though the pathophysiology of restless legs syndrome is not completely understood, several imaging studies have contributed to our understanding of the disease. Functional and metabolic impairment seems to be the pathophysiological core, tied to a single brain network or multiple connected brain networks, via neurotransmitter modifications. Positron emission tomography and single photon emission computed tomography studies support a dysfunction of dopaminergic pathways, involving not only the nigrostriatal pathway but also the mesolimbic pathway. Furthermore, a possible role of serotonergic neurotransmission has been suggested. Functional magnetic resonance imaging studies have demonstrated in restless legs syndrome patients a pathologic activation of cerebral areas belonging to both the sensorimotor and the limbic networks. Proton magnetic resonance spectroscopy has confirmed abnormality of the limbic system and suggested the presence of a glutamatergic disorder. Finally magnetic resonance studies using iron-sensitive sequences have demonstrated reduced iron content in several regions of the brain of restless legs syndrome patients. In this review we attempt to integrate all current imaging study results into a convergent pathophysiological interpretation.
Authors:
Giovanni Rizzo; Caterina Tonon; David Manners; Claudia Testa; Raffaele Lodi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Current neurology and neuroscience reports     Volume:  13     ISSN:  1534-6293     ISO Abbreviation:  Curr Neurol Neurosci Rep     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-07-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100931790     Medline TA:  Curr Neurol Neurosci Rep     Country:  United States    
Other Details:
Languages:  eng     Pagination:  372     Citation Subset:  IM    
Affiliation:
Functional MR Unit, Department of Biomedical and NeuroMotor Sciences (DiBiNeM), University of Bologna, Via Massarenti 9, 40138, Bologna, Italy.
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