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Erschienen in: Current Neurology and Neuroscience Reports 8/2014

01.08.2014 | Neuroimaging (DJ Brooks, Section Editor)

Imaging the Role of Amyloid in PD Dementia and Dementia with Lewy Bodies

verfasst von: Stephen N. Gomperts

Erschienen in: Current Neurology and Neuroscience Reports | Ausgabe 8/2014

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Abstract

Cognitive impairment and dementia are significant sequelae of Parkinson disease (PD) and comprise a key feature of dementia with Lewy bodies (DLB), a disease with similar clinical and neuropathological features. Multiple independent causes have been implicated in PD dementia (PDD) and DLB, among them the accumulation of β-amyloid, a neuropathological hallmark of Alzheimer disease. Over the last decade, PET imaging has emerged as a viable method to measure amyloid burden in the human brain and relate it to neurodegenerative diseases. This article reviews what amyloid imaging has taught us about PDD and DLB. Current data suggest that brain amyloid deposition tends to be more marked in DLB, yet contributes to cognitive impairment in both DLB and PD. These results are broadly consistent with neuropathology and CSF studies. β-Amyloid may interact synergistically with other pathological processes in PD and DLB to contribute to cognitive impairment.
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Zurück zum Zitat Burke JF, Albin RL, Koeppe RA, Giordani B, Kilbourn MR, Gilman S, et al. Assessment of mild dementia with amyloid and dopamine terminal positron emission tomography. Brain. 2011;134:1647–57. PiB and vesicular monoamine transporter imaging of the dopamine terminal were used to differentiate AD, DLB, and FTD subjects with mild dementia.PubMedCentralPubMed Burke JF, Albin RL, Koeppe RA, Giordani B, Kilbourn MR, Gilman S, et al. Assessment of mild dementia with amyloid and dopamine terminal positron emission tomography. Brain. 2011;134:1647–57. PiB and vesicular monoamine transporter imaging of the dopamine terminal were used to differentiate AD, DLB, and FTD subjects with mild dementia.PubMedCentralPubMed
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Zurück zum Zitat Kantarci K, Lowe VJ, Boeve BF, Weigand SD, Senjem ML, Przybelski SA, et al. Multimodality imaging characteristics of dementia with Lewy bodies. Neurobiol Aging. 2012;33:2091–105. This article compared AD and DLB patients using MRI, PiB imaging, and fluorodeoxyglucose imaging; a subset of patients underwent neuropathological evaluation. It found that a single imaging modality did not differentiate groups or individual patients well, but that using at least two modalities improved their discrimination.PubMedCentralPubMed Kantarci K, Lowe VJ, Boeve BF, Weigand SD, Senjem ML, Przybelski SA, et al. Multimodality imaging characteristics of dementia with Lewy bodies. Neurobiol Aging. 2012;33:2091–105. This article compared AD and DLB patients using MRI, PiB imaging, and fluorodeoxyglucose imaging; a subset of patients underwent neuropathological evaluation. It found that a single imaging modality did not differentiate groups or individual patients well, but that using at least two modalities improved their discrimination.PubMedCentralPubMed
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Metadaten
Titel
Imaging the Role of Amyloid in PD Dementia and Dementia with Lewy Bodies
verfasst von
Stephen N. Gomperts
Publikationsdatum
01.08.2014
Verlag
Springer US
Erschienen in
Current Neurology and Neuroscience Reports / Ausgabe 8/2014
Print ISSN: 1528-4042
Elektronische ISSN: 1534-6293
DOI
https://doi.org/10.1007/s11910-014-0472-6

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