La maladie de Parkinson au Canada (serveur d'exploration)

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Lesions causing freezing of gait localize to a cerebellar functional network.

Identifieur interne : 000081 ( PubMed/Corpus ); précédent : 000080; suivant : 000082

Lesions causing freezing of gait localize to a cerebellar functional network.

Auteurs : Alfonso Fasano ; Simon E. Laganiere ; Susy Lam ; Michael D. Fox

Source :

RBID : pubmed:28009063

Abstract

Freezing of gait is a disabling symptom in Parkinson disease and related disorders, but the brain regions involved in symptom generation remain unclear. Here we analyze brain lesions causing acute onset freezing of gait to identify regions causally involved in symptom generation.

DOI: 10.1002/ana.24845
PubMed: 28009063

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pubmed:28009063

Le document en format XML

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<name sortKey="Fasano, Alfonso" sort="Fasano, Alfonso" uniqKey="Fasano A" first="Alfonso" last="Fasano">Alfonso Fasano</name>
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<nlm:affiliation>Morton and Gloria Shulman Movement Disorders Clinic and Edmond J. Safra Program in Parkinson's Disease, Toronto Western Hospital, Toronto, Ontario, Canada.</nlm:affiliation>
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<name sortKey="Laganiere, Simon E" sort="Laganiere, Simon E" uniqKey="Laganiere S" first="Simon E" last="Laganiere">Simon E. Laganiere</name>
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<name sortKey="Lam, Susy" sort="Lam, Susy" uniqKey="Lam S" first="Susy" last="Lam">Susy Lam</name>
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<nlm:affiliation>Institute of Medical Science, Faculty of Medicine, University of Toronto, Ontario, Canada.</nlm:affiliation>
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<name sortKey="Fox, Michael D" sort="Fox, Michael D" uniqKey="Fox M" first="Michael D" last="Fox">Michael D. Fox</name>
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<nlm:affiliation>Berenson-Allen Center for Noninvasive Brain Stimulation, Division of Cognitive Neurology, Department of Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA.</nlm:affiliation>
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<title xml:lang="en">Lesions causing freezing of gait localize to a cerebellar functional network.</title>
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<name sortKey="Laganiere, Simon E" sort="Laganiere, Simon E" uniqKey="Laganiere S" first="Simon E" last="Laganiere">Simon E. Laganiere</name>
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<nlm:affiliation>Berenson-Allen Center for Noninvasive Brain Stimulation, Division of Cognitive Neurology, Department of Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA.</nlm:affiliation>
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<name sortKey="Lam, Susy" sort="Lam, Susy" uniqKey="Lam S" first="Susy" last="Lam">Susy Lam</name>
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<nlm:affiliation>Institute of Medical Science, Faculty of Medicine, University of Toronto, Ontario, Canada.</nlm:affiliation>
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<name sortKey="Fox, Michael D" sort="Fox, Michael D" uniqKey="Fox M" first="Michael D" last="Fox">Michael D. Fox</name>
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<title level="j">Annals of neurology</title>
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<div type="abstract" xml:lang="en">Freezing of gait is a disabling symptom in Parkinson disease and related disorders, but the brain regions involved in symptom generation remain unclear. Here we analyze brain lesions causing acute onset freezing of gait to identify regions causally involved in symptom generation.</div>
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<Volume>81</Volume>
<Issue>1</Issue>
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<Year>2017</Year>
<Month>Jan</Month>
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<Title>Annals of neurology</Title>
<ISOAbbreviation>Ann. Neurol.</ISOAbbreviation>
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<ArticleTitle>Lesions causing freezing of gait localize to a cerebellar functional network.</ArticleTitle>
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<MedlinePgn>129-141</MedlinePgn>
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<ELocationID EIdType="doi" ValidYN="Y">10.1002/ana.24845</ELocationID>
<Abstract>
<AbstractText Label="OBJECTIVE" NlmCategory="OBJECTIVE">Freezing of gait is a disabling symptom in Parkinson disease and related disorders, but the brain regions involved in symptom generation remain unclear. Here we analyze brain lesions causing acute onset freezing of gait to identify regions causally involved in symptom generation.</AbstractText>
<AbstractText Label="METHODS" NlmCategory="METHODS">Fourteen cases of lesion-induced freezing of gait were identified from the literature, and lesions were mapped to a common brain atlas. Because lesion-induced symptoms can come from sites connected to the lesion location, not just the lesion location itself, we also identified brain regions functionally connected to each lesion location. This technique, termed lesion network mapping, has been recently shown to identify regions involved in symptom generation across a variety of lesion-induced disorders.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">Lesion location was heterogeneous, and no single region could be considered necessary for symptom generation. However, > 90% (13 of 14) of lesions were functionally connected to a focal area in the dorsal medial cerebellum. This cerebellar area overlapped previously recognized regions that are activated by locomotor tasks, termed the cerebellar locomotor region. Connectivity to this region was specific to lesions causing freezing of gait compared to lesions causing other movement disorders (hemichorea or asterixis).</AbstractText>
<AbstractText Label="INTERPRETATION" NlmCategory="CONCLUSIONS">Lesions causing freezing of gait are located within a common functional network characterized by connectivity to the cerebellar locomotor region. These results based on causal brain lesions complement prior neuroimaging studies in Parkinson disease patients, advancing our understanding of the brain regions involved in freezing of gait. ANN NEUROL 2017;81:129-141.</AbstractText>
<CopyrightInformation>© 2016 American Neurological Association.</CopyrightInformation>
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<ForeName>Alfonso</ForeName>
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<Affiliation>Morton and Gloria Shulman Movement Disorders Clinic and Edmond J. Safra Program in Parkinson's Disease, Toronto Western Hospital, Toronto, Ontario, Canada.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Division of Neurology, University of Toronto, Toronto, Ontario, Canada.</Affiliation>
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<AffiliationInfo>
<Affiliation>Krembil Research Institute, Toronto, Ontario, Canada.</Affiliation>
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<ForeName>Simon E</ForeName>
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<Affiliation>Berenson-Allen Center for Noninvasive Brain Stimulation, Division of Cognitive Neurology, Department of Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA.</Affiliation>
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<Affiliation>Berenson-Allen Center for Noninvasive Brain Stimulation, Division of Cognitive Neurology, Department of Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA.</Affiliation>
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<AffiliationInfo>
<Affiliation>Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA.</Affiliation>
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<AffiliationInfo>
<Affiliation>Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.</Affiliation>
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<Language>eng</Language>
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<GrantID>K23 NS083741</GrantID>
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<CoiStatement>None Potential Conflicts of Interest None.</CoiStatement>
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