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18F-AV-1451 in Parkinson's Disease with and without dementia and in Dementia with Lewy Bodies

Smith, Ruben LU ; Schöll, Michael LU ; Londos, Elisabet LU ; Ohlsson, Tomas and Hansson, Oskar LU (2018) In Scientific Reports 8(1).
Abstract

Mixed pathologies of α-synuclein, β-amyloid and tau are relatively common in Parkinson's disease (PD) and Dementia with Lewy Bodies (DLB). We therefore wanted to study the retention patterns of 18F-AV-1451 in PD, PD-dementia (PDD), and DLB. To do this 44 healthy controls, 11 non-demented patients with PD, 18 patients with PDD, and six patients with DLB underwent MRI and 18F-AV-1451 PET scanning and cognitive testing. We found that parietal 18F-AV-1451 retention was increased in patients with DLB compared to controls and PD patients, while 18F-AV-1451 uptake was reduced in the substantia nigra in PDD. Increased parietal 18F-AV-1451 PET uptake was associated with impaired performance... (More)

Mixed pathologies of α-synuclein, β-amyloid and tau are relatively common in Parkinson's disease (PD) and Dementia with Lewy Bodies (DLB). We therefore wanted to study the retention patterns of 18F-AV-1451 in PD, PD-dementia (PDD), and DLB. To do this 44 healthy controls, 11 non-demented patients with PD, 18 patients with PDD, and six patients with DLB underwent MRI and 18F-AV-1451 PET scanning and cognitive testing. We found that parietal 18F-AV-1451 retention was increased in patients with DLB compared to controls and PD patients, while 18F-AV-1451 uptake was reduced in the substantia nigra in PDD. Increased parietal 18F-AV-1451 PET uptake was associated with impaired performance on verbal fluency tests, and the decreased uptake in the substantia nigra correlated with worse motor function. We found no effect of the monoamine oxidase B inhibitor rasagiline on 18F-AV-1451 binding. In conclusion DLB patients have increased parietal 18F-AV-1451 uptake. Increased parietal tau is associated with executive impairment in patients with synucleinopathies, while decreased uptake in the substantia nigra is associated with parkinsonism. Further, our data indicate that 18F-AV-1451 does not significantly bind to MAO-B in vivo.

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Contribution to journal
publication status
published
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in
Scientific Reports
volume
8
issue
1
publisher
Nature Publishing Group
external identifiers
  • scopus:85044304110
ISSN
2045-2322
DOI
10.1038/s41598-018-23041-x
language
English
LU publication?
yes
id
2f122fe0-8615-4800-bc38-9dcb49a6b4a0
date added to LUP
2018-04-03 12:06:21
date last changed
2018-12-02 04:59:53
@article{2f122fe0-8615-4800-bc38-9dcb49a6b4a0,
  abstract     = {<p>Mixed pathologies of α-synuclein, β-amyloid and tau are relatively common in Parkinson's disease (PD) and Dementia with Lewy Bodies (DLB). We therefore wanted to study the retention patterns of <sup>18</sup>F-AV-1451 in PD, PD-dementia (PDD), and DLB. To do this 44 healthy controls, 11 non-demented patients with PD, 18 patients with PDD, and six patients with DLB underwent MRI and <sup>18</sup>F-AV-1451 PET scanning and cognitive testing. We found that parietal <sup>18</sup>F-AV-1451 retention was increased in patients with DLB compared to controls and PD patients, while <sup>18</sup>F-AV-1451 uptake was reduced in the substantia nigra in PDD. Increased parietal <sup>18</sup>F-AV-1451 PET uptake was associated with impaired performance on verbal fluency tests, and the decreased uptake in the substantia nigra correlated with worse motor function. We found no effect of the monoamine oxidase B inhibitor rasagiline on <sup>18</sup>F-AV-1451 binding. In conclusion DLB patients have increased parietal <sup>18</sup>F-AV-1451 uptake. Increased parietal tau is associated with executive impairment in patients with synucleinopathies, while decreased uptake in the substantia nigra is associated with parkinsonism. Further, our data indicate that <sup>18</sup>F-AV-1451 does not significantly bind to MAO-B in vivo.</p>},
  articleno    = {4717},
  author       = {Smith, Ruben and Schöll, Michael and Londos, Elisabet and Ohlsson, Tomas and Hansson, Oskar},
  issn         = {2045-2322},
  language     = {eng},
  month        = {12},
  number       = {1},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {<sup>18</sup>F-AV-1451 in Parkinson's Disease with and without dementia and in Dementia with Lewy Bodies},
  url          = {http://dx.doi.org/10.1038/s41598-018-23041-x},
  volume       = {8},
  year         = {2018},
}