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Astrogliopathy predominates the earliest stage of corticobasal degeneration pathology

Overview of attention for article published in Brain: A Journal of Neurology, October 2016
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  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (84th percentile)
  • Average Attention Score compared to outputs of the same age and source

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17 tweeters
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1 Facebook page
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1 Google+ user

Citations

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39 Dimensions

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45 Mendeley
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Title
Astrogliopathy predominates the earliest stage of corticobasal degeneration pathology
Published in
Brain: A Journal of Neurology, October 2016
DOI 10.1093/brain/aww256
Pubmed ID
Authors

Helen Ling, Gabor G. Kovacs, Jean Paul G Vonsattel, Karen Davey, Kin Y Mok, John Hardy, Huw R. Morris, Thomas T. Warner, Janice L. Holton, Tamas Revesz

Abstract

Animal models have shown that tau seeding and propagation are strain- and neural network-specific. The study of preclinical cases is valuable to gain insights into early pathological features of corticobasal degeneration and its progression. Three preclinical corticobasal degeneration cases and six age-matched end-stage corticobasal degeneration cases were included in this study. Tau immunohistochemistry performed in 20 brain regions and quantitative assessment of regional tau load using image analysis were performed. Semi-quantitative grading of tau-positive cellular lesions and neuronal loss in the frontal, parietal and temporal cortices, striatum, substantia nigra and subthalamic nucleus were assessed. All preclinical cases were clinically asymptomatic but had widespread tau lesions in the typically affected regions in corticobasal degeneration and the pathognomonic astrocytic plaques were the most prominent lesion type in the anterior frontal and striatal regions. Mean total tau load (sum of all regional tau load) of end-stage corticobasal degeneration cases were nine times greater than that of the preclinical cases (P = 0.04) and less tau load was found in all regions of the preclinical cases. An anterior-to-posterior tau load ratio in the frontal cortex in preclinical cases was 12-fold greater than in end-stage corticobasal degeneration cases. Relatively greater tau burden in the anterior frontal cortex, striatum and subthalamic nucleus suggests the striatal afferent connection to the dorsolateral prefrontal cortex and basal ganglia circuitry are the earliest neural network connections affected by corticobasal degeneration-related tau pathology. Differential distribution of the tau pathology to selective cortical regions in these preclinical cases implies phenotypic presentation may be predetermined at a very early stage of the disease process. Neuronal loss of the substantia nigra was either absent or very mild in the preclinical cases and was moderate to severe in end-stage corticobasal degeneration cases (P < 0.05). Our findings suggest that a threshold of pathological burden in the 'right' anatomical regions needs to be reached before the onset of clinical symptoms. The early prominence of the astrocytic plaques in relation to sparse neuronal lesions leads one to speculate that corticobasal degeneration may begin as an astrogliopathy at a very early disease stage but neuronal lesions gradually take over as the predominant lesion type in advanced disease.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 45 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Austria 1 2%
Unknown 44 98%

Demographic breakdown

Readers by professional status Count As %
Researcher 8 18%
Student > Doctoral Student 7 16%
Student > Postgraduate 6 13%
Student > Master 5 11%
Student > Ph. D. Student 5 11%
Other 14 31%
Readers by discipline Count As %
Medicine and Dentistry 15 33%
Neuroscience 11 24%
Agricultural and Biological Sciences 5 11%
Psychology 5 11%
Unspecified 3 7%
Other 6 13%

Attention Score in Context

This research output has an Altmetric Attention Score of 12. 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 11 May 2017.
All research outputs
#1,188,099
of 12,395,737 outputs
Outputs from Brain: A Journal of Neurology
#1,308
of 4,825 outputs
Outputs of similar age
#42,143
of 274,439 outputs
Outputs of similar age from Brain: A Journal of Neurology
#43
of 78 outputs
Altmetric has tracked 12,395,737 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 90th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,825 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 15.9. This one has gotten more attention than average, scoring higher than 72% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 274,439 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 84% of its contemporaries.
We're also able to compare this research output to 78 others from the same source and published within six weeks on either side of this one. This one is in the 44th percentile – i.e., 44% of its contemporaries scored the same or lower than it.