Idiopathic REM sleep behavior disorder in the transition to degenerative disease
Identifieur interne : 000887 ( Istex/Corpus ); précédent : 000886; suivant : 000888Idiopathic REM sleep behavior disorder in the transition to degenerative disease
Auteurs : Ronald B. Postuma ; Jean-Francois Gagnon ; Melanie Vendette ; Jacques Y. MontplaisirSource :
- Movement Disorders [ 0885-3185 ] ; 2009-11-15.
English descriptors
Abstract
Idiopathic REM sleep behavior disorder (RBD) predicts Parkinson's disease (PD) and dementia. However, the nature of the disease that emerges from RBD has not been fully characterized. Since 2004, we have been conducting a prospective study of idiopathic RBD patients, providing an opportunity to directly observe patients as they transitioned to a defined neurodegenerative syndrome. Patients with idiopathic RBD underwent an extensive annual evaluation of motor function, olfaction, color vision, autonomic function, cognition and psychiatric symptoms. Neurodegenerative disease was defined according to standard criteria. We compared these measures in patients who had developed PD to those with dementia, all within the first year of developing disease. Of 67 patients, 6 developed PD and eleven developed dementia. Except for cognitive functioning, all tests of olfaction, color vision, autonomic function, depression, and quantitative measures of motor speed were similar in patients with PD and dementia. Of dementia patients, seven met criteria for probable Lewy body dementia (LBD) and four for Alzheimer's disease (or, possible LBD). In all probable LBD cases, the diagnosis was made because of parkinsonism, with no patient experiencing hallucinations or fluctuations. Patients with “Alzheimer's disease” seemed to have LBD, as they demonstrated typical LBD cognitive profiles on neuropsychological testing and were indistinguishable from LBD patients in ancillary measures. Therefore, among RBD patients with new‐onset LBD, hallucinations or fluctuations are absent, suggesting that RBD is a reliable early sign of LBD. The indistinguishability of dementia and PD in all ancillary measures suggests a single unitary “RBD‐then‐neurodegeneration” process, the clinical presentation of which depends upon selective neuronal vulnerability. © 2009 Movement Disorder Society
Url:
DOI: 10.1002/mds.22757
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<front><div type="abstract" xml:lang="en">Idiopathic REM sleep behavior disorder (RBD) predicts Parkinson's disease (PD) and dementia. However, the nature of the disease that emerges from RBD has not been fully characterized. Since 2004, we have been conducting a prospective study of idiopathic RBD patients, providing an opportunity to directly observe patients as they transitioned to a defined neurodegenerative syndrome. Patients with idiopathic RBD underwent an extensive annual evaluation of motor function, olfaction, color vision, autonomic function, cognition and psychiatric symptoms. Neurodegenerative disease was defined according to standard criteria. We compared these measures in patients who had developed PD to those with dementia, all within the first year of developing disease. Of 67 patients, 6 developed PD and eleven developed dementia. Except for cognitive functioning, all tests of olfaction, color vision, autonomic function, depression, and quantitative measures of motor speed were similar in patients with PD and dementia. Of dementia patients, seven met criteria for probable Lewy body dementia (LBD) and four for Alzheimer's disease (or, possible LBD). In all probable LBD cases, the diagnosis was made because of parkinsonism, with no patient experiencing hallucinations or fluctuations. Patients with “Alzheimer's disease” seemed to have LBD, as they demonstrated typical LBD cognitive profiles on neuropsychological testing and were indistinguishable from LBD patients in ancillary measures. Therefore, among RBD patients with new‐onset LBD, hallucinations or fluctuations are absent, suggesting that RBD is a reliable early sign of LBD. The indistinguishability of dementia and PD in all ancillary measures suggests a single unitary “RBD‐then‐neurodegeneration” process, the clinical presentation of which depends upon selective neuronal vulnerability. © 2009 Movement Disorder Society</div>
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<affiliation xml:id="af3" countryCode="CA" type="organization"><unparsedAffiliation>Department of Psychiatry, Université de Montréal, Quebec, Canada</unparsedAffiliation>
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<keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">REM sleep behavior disorder</keyword>
<keyword xml:id="kwd2">Parkinson's disease</keyword>
<keyword xml:id="kwd3">Lewy body dementia</keyword>
<keyword xml:id="kwd4">Alzheimer's disease</keyword>
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<fundingInfo><fundingAgency>Fonds de la Recherche en Santé du Québec</fundingAgency>
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<fundingInfo><fundingAgency>Canadian Institutes of Health Research</fundingAgency>
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<p>Idiopathic REM sleep behavior disorder (RBD) predicts Parkinson's disease (PD) and dementia. However, the nature of the disease that emerges from RBD has not been fully characterized. Since 2004, we have been conducting a prospective study of idiopathic RBD patients, providing an opportunity to directly observe patients as they transitioned to a defined neurodegenerative syndrome. Patients with idiopathic RBD underwent an extensive annual evaluation of motor function, olfaction, color vision, autonomic function, cognition and psychiatric symptoms. Neurodegenerative disease was defined according to standard criteria. We compared these measures in patients who had developed PD to those with dementia, all within the first year of developing disease. Of 67 patients, 6 developed PD and eleven developed dementia. Except for cognitive functioning, all tests of olfaction, color vision, autonomic function, depression, and quantitative measures of motor speed were similar in patients with PD and dementia. Of dementia patients, seven met criteria for probable Lewy body dementia (LBD) and four for Alzheimer's disease (or, possible LBD). In all probable LBD cases, the diagnosis was made because of parkinsonism, with no patient experiencing hallucinations or fluctuations. Patients with “Alzheimer's disease” seemed to have LBD, as they demonstrated typical LBD cognitive profiles on neuropsychological testing and were indistinguishable from LBD patients in ancillary measures. Therefore, among RBD patients with new‐onset LBD, hallucinations or fluctuations are absent, suggesting that RBD is a reliable early sign of LBD. The indistinguishability of dementia and PD in all ancillary measures suggests a single unitary “RBD‐then‐neurodegeneration” process, the clinical presentation of which depends upon selective neuronal vulnerability. © 2009 Movement Disorder Society</p>
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<noteGroup><note xml:id="fn1"><p>Potential conflict of interest: Nothing to report</p>
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<!--Version 0.6 générée le 3-12-2015--><mods version="3.6"><titleInfo lang="en"><title>Idiopathic REM sleep behavior disorder in the transition to degenerative disease</title>
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<titleInfo type="abbreviated" lang="en"><title>RBD in the Transition to Neurodegeneration</title>
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<titleInfo type="alternative" contentType="CDATA" lang="en"><title>Idiopathic REM sleep behavior disorder in the transition to degenerative disease</title>
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<name type="personal"><namePart type="given">Ronald B.</namePart>
<namePart type="family">Postuma</namePart>
<namePart type="termsOfAddress">MD, MSC</namePart>
<affiliation>Department of Neurology, McGill University, Montreal General Hospital, Montreal, Quebec, Canada</affiliation>
<affiliation>Centre d'etude du sommeil, Hopital du Sacre‐Coeur, Montreal, Quebec, Canada</affiliation>
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<name type="personal"><namePart type="given">Jean‐Francois</namePart>
<namePart type="family">Gagnon</namePart>
<namePart type="termsOfAddress">PhD</namePart>
<affiliation>Centre d'etude du sommeil, Hopital du Sacre‐Coeur, Montreal, Quebec, Canada</affiliation>
<affiliation>Department of Psychiatry, Université de Montréal, Quebec, Canada</affiliation>
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<name type="personal"><namePart type="given">Melanie</namePart>
<namePart type="family">Vendette</namePart>
<namePart type="termsOfAddress">BSC</namePart>
<affiliation>Centre d'etude du sommeil, Hopital du Sacre‐Coeur, Montreal, Quebec, Canada</affiliation>
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<name type="personal"><namePart type="given">Jacques Y.</namePart>
<namePart type="family">Montplaisir</namePart>
<namePart type="termsOfAddress">MD, PhD</namePart>
<affiliation>Centre d'etude du sommeil, Hopital du Sacre‐Coeur, Montreal, Quebec, Canada</affiliation>
<affiliation>Department of Psychiatry, Université de Montréal, Quebec, Canada</affiliation>
<description>Correspondence: CRCPC, Centre d'étude du sommeil et des rythmes biologiques, Hôpital du Sacré‐Cœur de Montréal, 5400 Boul. Gouin Ouest, Montréal, Québec S H4J 1C5 Canada</description>
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<dateIssued encoding="w3cdtf">2009-11-15</dateIssued>
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<abstract lang="en">Idiopathic REM sleep behavior disorder (RBD) predicts Parkinson's disease (PD) and dementia. However, the nature of the disease that emerges from RBD has not been fully characterized. Since 2004, we have been conducting a prospective study of idiopathic RBD patients, providing an opportunity to directly observe patients as they transitioned to a defined neurodegenerative syndrome. Patients with idiopathic RBD underwent an extensive annual evaluation of motor function, olfaction, color vision, autonomic function, cognition and psychiatric symptoms. Neurodegenerative disease was defined according to standard criteria. We compared these measures in patients who had developed PD to those with dementia, all within the first year of developing disease. Of 67 patients, 6 developed PD and eleven developed dementia. Except for cognitive functioning, all tests of olfaction, color vision, autonomic function, depression, and quantitative measures of motor speed were similar in patients with PD and dementia. Of dementia patients, seven met criteria for probable Lewy body dementia (LBD) and four for Alzheimer's disease (or, possible LBD). In all probable LBD cases, the diagnosis was made because of parkinsonism, with no patient experiencing hallucinations or fluctuations. Patients with “Alzheimer's disease” seemed to have LBD, as they demonstrated typical LBD cognitive profiles on neuropsychological testing and were indistinguishable from LBD patients in ancillary measures. Therefore, among RBD patients with new‐onset LBD, hallucinations or fluctuations are absent, suggesting that RBD is a reliable early sign of LBD. The indistinguishability of dementia and PD in all ancillary measures suggests a single unitary “RBD‐then‐neurodegeneration” process, the clinical presentation of which depends upon selective neuronal vulnerability. © 2009 Movement Disorder Society</abstract>
<note type="content">*Potential conflict of interest: Nothing to report</note>
<note type="funding">Fonds de la Recherche en Santé du Québec</note>
<note type="funding">Canadian Institutes of Health Research</note>
<subject lang="en"><genre>Keywords</genre>
<topic>REM sleep behavior disorder</topic>
<topic>Parkinson's disease</topic>
<topic>Lewy body dementia</topic>
<topic>Alzheimer's disease</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Movement Disorders</title>
<subTitle>Official Journal of the Movement Disorder Society</subTitle>
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<identifier type="ISSN">0885-3185</identifier>
<identifier type="eISSN">1531-8257</identifier>
<identifier type="DOI">10.1002/(ISSN)1531-8257</identifier>
<identifier type="PublisherID">MDS</identifier>
<part><date>2009</date>
<detail type="volume"><caption>vol.</caption>
<number>24</number>
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<detail type="issue"><caption>no.</caption>
<number>15</number>
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