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| Hauptseite > Publikationsdatenbank > Functional Characterization of Atrophy Patterns Related to Cognitive Impairment > print |
| Hauptseite > Publikationsdatenbank > Functional Characterization of Atrophy Patterns Related to Cognitive Impairment > print |
| 001 | 873911 | ||
| 005 | 20210130004535.0 | ||
| 024 | 7 | _ | |a 10.3389/fneur.2020.00018 |2 doi |
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| 037 | _ | _ | |a FZJ-2020-01096 |
| 082 | _ | _ | |a 610 |
| 100 | 1 | _ | |a Schnellbächer, Gereon J. |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Functional Characterization of Atrophy Patterns Related to Cognitive Impairment |
| 260 | _ | _ | |a Lausanne |c 2020 |b Frontiers Research Foundation |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1582035280_32368 |2 PUB:(DE-HGF) |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 500 | _ | _ | |a FUNDINGKR was funded by the German Federal Ministry of Educationand Research (BMBF 01GQ1402). ID was supported by theSTART-Program(08/16) of the Faculty of Medicine at theRWTHAachen University. |
| 520 | _ | _ | |a Introduction: Mild cognitive impairment (MCI) is a heterogenous syndrome considered as a risk factor for developing dementia. Previous work examining morphological brain changes in MCI has identified a temporo-parietal atrophy pattern that suggests a common neuroanatomical denominator of cognitive impairment. Using functional connectivity analyses of structurally affected regions in MCI, we aimed to investigate and characterize functional networks formed by these regions that appear to be particularly vulnerable to disease-related disruptions. Methods: Areas of convergent atrophy in MCI were derived from a quantitative meta-analysis and encompassed left and right medial temporal (i.e., hippocampus, amygdala), as well as parietal regions (precuneus), which were defined as seed regions for connectivity analyses. Both task-based meta-analytical connectivity modeling (MACM) based on the BrainMap database and task-free resting-state functional MRI in a large cohort of older adults from the 1000BRAINS study were applied. We additionally assessed behavioral characteristics associated with the seed regions using BrainMap meta-data and investigated correlations of resting-state connectivity with age. Results: The left temporal seed showed stronger associations with a fronto-temporal network, whereas the right temporal atrophy cluster was more linked to cortico-striatal regions. In accordance with this, behavioral analysis indicated an emphasis of the left temporal seed on language generation, and the right temporal seed was associated with the domains of emotion and attention. Task-independent co-activation was more pronounced in the parietal seed, which demonstrated stronger connectivity with a frontoparietal network and associations with introspection and social cognition. Correlation analysis revealed both decreasing and increasing functional connectivity with higher age that may add to pathological processes but also indicates compensatory mechanisms of functional reorganization with increasing age. Conclusion: Our findings provide an important pathophysiological link between morphological changes and the clinical relevance of major structural damage in MCI. Multimodal analysis of functional networks related to areas of MCI-typical atrophy may help to explain cognitive decline and behavioral alterations not tractable by a mere anatomical interpretation and therefore contribute to prognostic evaluations.Copyright © 2020 Schnellbächer, Hoffstaedter, Eickhoff, Caspers, Nickl-Jockschat, Fox, Laird, Schulz, Reetz and Dogan. |
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| 700 | 1 | _ | |a Hoffstaedter, Felix |0 P:(DE-Juel1)131684 |b 1 |
| 700 | 1 | _ | |a Eickhoff, Simon B. |0 P:(DE-Juel1)131678 |b 2 |
| 700 | 1 | _ | |a Caspers, Svenja |0 P:(DE-Juel1)131675 |b 3 |
| 700 | 1 | _ | |a Nickl-Jockschat, Thomas |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Fox, Peter T. |0 P:(DE-HGF)0 |b 5 |
| 700 | 1 | _ | |a Laird, Angela R. |0 P:(DE-HGF)0 |b 6 |
| 700 | 1 | _ | |a Schulz, Jörg B. |0 P:(DE-Juel1)171786 |b 7 |
| 700 | 1 | _ | |a Reetz, Kathrin |0 P:(DE-Juel1)177889 |b 8 |u fzj |
| 700 | 1 | _ | |a Dogan, Imis |0 P:(DE-HGF)0 |b 9 |e Corresponding author |
| 773 | _ | _ | |a 10.3389/fneur.2020.00018 |g Vol. 11, p. 18 |0 PERI:(DE-600)2564214-5 |p 18 |t Frontiers in neurology |v 11 |y 2020 |x 1664-2295 |
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