Cerebrospinal tau, phospho‐tau, and beta‐amyloid and neuropsychological functions in Parkinson's disease
Identifieur interne : 000B68 ( Istex/Curation ); précédent : 000B67; suivant : 000B69Cerebrospinal tau, phospho‐tau, and beta‐amyloid and neuropsychological functions in Parkinson's disease
Auteurs : Yaroslau Compta [Espagne] ; María J. Martí [Espagne] ; Naroa Ibarretxe-Bilbao [Espagne] ; Carme Junqué [Espagne] ; Francesc Valldeoriola [Espagne] ; Esteban Mu Oz [Espagne] ; Mario Ezquerra [Espagne] ; Jose Ríos [Espagne] ; Eduardo Tolosa [Espagne]Source :
- Movement Disorders [ 0885-3185 ] ; 2009-11-15.
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- KwdEn :
Abstract
Alzheimer's disease (AD)‐pathology may play a role in Parkinson's disease (PD)‐related dementia (PDD). The aim of this study was to assess cerebrospinal fluid (CSF) levels of tau, phospho‐tau, and beta‐amyloid, proposed AD biomarkers, and their relationship with cognitive function in PD. Forty PD patients [20 nondemented (PDND); 20 PDD] and 30 controls underwent CSF tau, phospho‐tau, and beta‐amyloid analysis using specific ELISA techniques. All PD patients and 15 controls underwent neuropsychological testing of fronto‐subcortical (attention, fluency) and neocortical (memory, naming, visuoperceptive) functions. CSF markers levels were compared between groups, and compared and correlated with neuropsychological measures in PDND and PDD separately and as a continuum (PD). CSF tau and phospho‐tau were higher in PDD than in PDND and controls (P < 0.05). CSF beta‐amyloid ranged from high (controls) to intermediate (PDND) and low (PDD) levels (P < 0.001). In all PD and PDD patients, high CSF tau and phospho‐tau were associated with impaired memory and naming. In PDND, CSF beta‐amyloid was related with phonetic fluency. These findings suggest underlying AD‐pathology in PDD in association with cortical cognitive dysfunction, and that low CSF beta‐amyloid in PDND patients with impaired phonetic fluency can constitute an early marker of cognitive dysfunction. © 2009 Movement Disorder Society
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DOI: 10.1002/mds.22594
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<front><div type="abstract" xml:lang="en">Alzheimer's disease (AD)‐pathology may play a role in Parkinson's disease (PD)‐related dementia (PDD). The aim of this study was to assess cerebrospinal fluid (CSF) levels of tau, phospho‐tau, and beta‐amyloid, proposed AD biomarkers, and their relationship with cognitive function in PD. Forty PD patients [20 nondemented (PDND); 20 PDD] and 30 controls underwent CSF tau, phospho‐tau, and beta‐amyloid analysis using specific ELISA techniques. All PD patients and 15 controls underwent neuropsychological testing of fronto‐subcortical (attention, fluency) and neocortical (memory, naming, visuoperceptive) functions. CSF markers levels were compared between groups, and compared and correlated with neuropsychological measures in PDND and PDD separately and as a continuum (PD). CSF tau and phospho‐tau were higher in PDD than in PDND and controls (P < 0.05). CSF beta‐amyloid ranged from high (controls) to intermediate (PDND) and low (PDD) levels (P < 0.001). In all PD and PDD patients, high CSF tau and phospho‐tau were associated with impaired memory and naming. In PDND, CSF beta‐amyloid was related with phonetic fluency. These findings suggest underlying AD‐pathology in PDD in association with cortical cognitive dysfunction, and that low CSF beta‐amyloid in PDND patients with impaired phonetic fluency can constitute an early marker of cognitive dysfunction. © 2009 Movement Disorder Society</div>
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