| Title |
Dual tracer tau PET imaging reveals different molecular targets for 11C-THK5351 and 11C-PBB3 in the Alzheimer brain
|
|---|---|
| Published in |
European Journal of Nuclear Medicine and Molecular Imaging, May 2018
|
| DOI | 10.1007/s00259-018-4012-5 |
| Pubmed ID | |
| Authors |
Konstantinos Chiotis, Per Stenkrona, Ove Almkvist, Vladimir Stepanov, Daniel Ferreira, Ryosuke Arakawa, Akihiro Takano, Eric Westman, Andrea Varrone, Nobuyuki Okamura, Hitoshi Shimada, Makoto Higuchi, Christer Halldin, Agneta Nordberg |
| Abstract |
Several tau PET tracers have been developed, but it remains unclear whether they bind to the same molecular target on the heterogeneous tau pathology. In this study we evaluated the binding of two chemically different tau-specific PET tracers (11C-THK5351 and 11C-PBB3) in a head-to-head, in vivo, multimodal design. Nine patients with a diagnosis of mild cognitive impairment or probable Alzheimer's disease and cerebrospinal fluid biomarker evidence supportive of the presence of Alzheimer's disease brain pathology were recruited after thorough clinical assessment. All patients underwent imaging with the tau-specific PET tracers 11C-THK5351 and 11C-PBB3 on the same day, as well as imaging with the amyloid-beta-specific tracer 11C-AZD2184, a T1-MRI sequence, and neuropsychological assessment. The load and regional distribution of binding differed between 11C-THK5351 and 11C-PBB3 with no statistically significant regional correlations observed between the tracers. The binding pattern of 11C-PBB3, but not that of 11C-THK5351, in the temporal lobe resembled that of 11C-AZD2184, with strong correlations detected between 11C-PBB3 and 11C-AZD2184 in the temporal and occipital lobes. Global cognition correlated more closely with 11C-THK5351 than with 11C-PBB3 binding. Similarly, cerebrospinal fluid tau measures and entorhinal cortex thickness were more closely correlated with 11C-THK5351 than with 11C-PBB3 binding. This research suggests different molecular targets for these tracers; while 11C-PBB3 appeared to preferentially bind to tau deposits with a close spatial relationship to amyloid-beta, the binding pattern of 11C-THK5351 fitted the expected distribution of tau pathology in Alzheimer's disease better and was more closely related to downstream disease markers. |
X Demographics
The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 67% |
| Sweden | 1 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 2 | 67% |
| Members of the public | 1 | 33% |
Mendeley readers
The data shown below were compiled from readership statistics for 77 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 77 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 13 | 17% |
| Researcher | 10 | 13% |
| Student > Master | 4 | 5% |
| Professor | 4 | 5% |
| Student > Doctoral Student | 3 | 4% |
| Other | 12 | 16% |
| Unknown | 31 | 40% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 13 | 17% |
| Neuroscience | 12 | 16% |
| Agricultural and Biological Sciences | 3 | 4% |
| Unspecified | 3 | 4% |
| Computer Science | 2 | 3% |
| Other | 13 | 17% |
| Unknown | 31 | 40% |
Attention Score in Context
This research output has an Altmetric Attention Score of 11. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 May 2018.
All research outputs
#2,860,900
of 23,806,312 outputs
Outputs from European Journal of Nuclear Medicine and Molecular Imaging
#239
of 3,083 outputs
Outputs of similar age
#58,768
of 327,101 outputs
Outputs of similar age from European Journal of Nuclear Medicine and Molecular Imaging
#7
of 48 outputs
Altmetric has tracked 23,806,312 research outputs across all sources so far. Compared to these this one has done well and is in the 87th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,083 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.1. This one has done particularly well, scoring higher than 99% of its peers.
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We're also able to compare this research output to 48 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 85% of its contemporaries.