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Abstract: The diagnostic value of cerebrospinal fluid (CSF) biomarkers is well established in Alzheimer's disease, but our current knowledge about how abnormal CSF levels affect cerebral integrity, at local and network levels, is incomplete in asymptomatic older adults. Here, we have collected CSF samples and performed structural magnetic resonance imaging scans in cognitively normal elderly as part of a cross-sectional multicenter study (SIGNAL project). To identify group differences in cortical thickness, white matter volume, and properties of structural networks, participants were split into controls (N = 20), positive amyloid-? (A?1?42 +) (N = 19), and positive phosphorylated tau (N = 18). The A?1?42 + group exhibited thickening of middle temporal regions, while positive phosphorylated tau individuals showed thinning in the superior parietal and orbitofrontal cortices. Subjects with abnormal CSF biomarkers further showed regional white matter atrophy and more segregated cortical networks, the A?1?42 + group showing heightened isolation of cingulate and temporal cortices. Collectively, these findings highlight the relevance of combining structural brain imaging and connectomics for in vivo tracking of Alzheimer's disease lesions in asymptomatic stages.
Fuente: Neurobiology of Aging Volume 64, April 2018, Pages 58-67
Editorial: Elsevier
Fecha de publicación: 01/04/2018
Nº de páginas: 9
Tipo de publicación: Artículo de Revista
DOI: 10.1016/j.neurobiolaging.2017.12.010
ISSN: 0197-4580,1558-1497
Consultar en UCrea Leer publicación
CANTERO, JOSÉ L.
ATIENZA, MERCEDES
PASCUAL SANCHEZ JUAN
ELOY MANUEL RODRIGUEZ RODRIGUEZ
JOSE LUIS VAZQUEZ HIGUERA
ANA POZUETA CANTUDO
ANDREA GONZALEZ SUAREZ
VILAPLANA, EDUARD
PEGUEROLES, JORDI
MONTAL, VÍCTOR
BLESA, RAFAEL
ALCOLEA, DANIEL
LLEO, ALBERTO
FORTEA, JUAN
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