Title |
Longitudinal Alzheimer’s Degeneration Reflects the Spatial Topography of Cholinergic Basal Forebrain Projections
|
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Published in |
Cell Reports, July 2018
|
DOI | 10.1016/j.celrep.2018.06.001 |
Pubmed ID | |
Authors |
Taylor W. Schmitz, Marieke Mur, Meghmik Aghourian, Marc-Andre Bedard, R. Nathan Spreng, for the Alzheimer’s Disease Neuroimaging Initiative |
Abstract |
The cholinergic neurons of the basal forebrain (BF) provide virtually all of the brain's cortical and amygdalar cholinergic input. They are particularly vulnerable to neuropathology in early Alzheimer's disease (AD) and may trigger the emergence of neuropathology in their cortico-amygdalar projection system through cholinergic denervation and trans-synaptic spreading of misfolded proteins. We examined whether longitudinal degeneration within the BF can explain longitudinal cortico-amygdalar degeneration in older human adults with abnormal cerebrospinal fluid biomarkers of AD neuropathology. We focused on two BF subregions, which are known to innervate cortico-amygdalar regions via two distinct macroscopic cholinergic projections. To further assess whether structural degeneration of these regions in AD reflects cholinergic denervation, we used the [18F] FEOBV radiotracer, which binds to cortico-amygdalar cholinergic terminals. We found that the two BF subregions explain spatially distinct patterns of cortico-amygdalar degeneration, which closely reflect their cholinergic projections, and overlap with [18F] FEOBV indices of cholinergic denervation. |
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Geographical breakdown
Country | Count | As % |
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United States | 3 | 10% |
Netherlands | 2 | 7% |
United Kingdom | 2 | 7% |
Germany | 1 | 3% |
Mexico | 1 | 3% |
Ireland | 1 | 3% |
Singapore | 1 | 3% |
Australia | 1 | 3% |
Other | 0 | 0% |
Unknown | 9 | 30% |
Demographic breakdown
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Members of the public | 16 | 53% |
Scientists | 12 | 40% |
Practitioners (doctors, other healthcare professionals) | 1 | 3% |
Science communicators (journalists, bloggers, editors) | 1 | 3% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 121 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 28 | 23% |
Researcher | 20 | 17% |
Student > Master | 14 | 12% |
Student > Doctoral Student | 8 | 7% |
Student > Postgraduate | 6 | 5% |
Other | 19 | 16% |
Unknown | 26 | 21% |
Readers by discipline | Count | As % |
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Neuroscience | 37 | 31% |
Psychology | 15 | 12% |
Medicine and Dentistry | 11 | 9% |
Agricultural and Biological Sciences | 7 | 6% |
Biochemistry, Genetics and Molecular Biology | 6 | 5% |
Other | 14 | 12% |
Unknown | 31 | 26% |