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Dynamic functional brain network connectivity during pseudoword processing relates to children’s reading skill
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Development of a standard of care for patients with valosin-containing protein associated multisystem proteinopathy.
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In: Orphanet journal of rare diseases, vol 17, iss 1 (2022)
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Family history of FXTAS is associated with age-related cognitive-linguistic decline among mothers with the FMR1 premutation.
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In: Journal of neurodevelopmental disorders, vol 14, iss 1 (2022)
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Cortical microstructure in primary progressive aphasia: a multicenter study.
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Illán-Gala, Ignacio; Montal, Victor; Borrego-Écija, Sergi; Mandelli, Maria Luisa; Falgàs, Neus; Welch, Ariane E; Pegueroles, Jordi; Santos-Santos, Miguel; Bejanin, Alexandre; Alcolea, Daniel; Dols-Icardo, Oriol; Belbin, Olivia; Sánchez-Saudinós, Mª Belén; Bargalló, Nuria; González-Ortiz, Sofía; Lladó, Albert; Blesa, Rafael; Dickerson, Bradford C; Rosen, Howard J; Miller, Bruce L; Lleó, Alberto; Gorno-Tempini, Maria Luisa; Sánchez-Valle, Raquel; Fortea, Juan
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In: Alzheimer's research & therapy, vol 14, iss 1 (2022)
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Abstract:
BackgroundCortical mean diffusivity is a novel imaging metric sensitive to early changes in neurodegenerative syndromes. Higher cortical mean diffusivity values reflect microstructural disorganization and have been proposed as a sensitive biomarker that might antedate macroscopic cortical changes. We aimed to test the hypothesis that cortical mean diffusivity is more sensitive than cortical thickness to detect cortical changes in primary progressive aphasia (PPA).MethodsIn this multicenter, case-control study, we recruited 120 patients with PPA (52 non-fluent, 31 semantic, and 32 logopenic variants; and 5 GRN-related PPA) as well as 89 controls from three centers. The 3-Tesla MRI protocol included structural and diffusion-weighted sequences. Disease severity was assessed with the Clinical Dementia Rating scale. Cortical thickness and cortical mean diffusivity were computed using a surface-based approach.ResultsThe comparison between each PPA variant and controls revealed cortical mean diffusivity increases and cortical thinning in overlapping regions, reflecting the canonical loci of neurodegeneration of each variant. Importantly, cortical mean diffusivity increases also expanded to other PPA-related areas and correlated with disease severity in all PPA groups. Cortical mean diffusivity was also increased in patients with very mild PPA when only minimal cortical thinning was observed and showed a good correlation with measures of disease severity.ConclusionsCortical mean diffusivity shows promise as a sensitive biomarker for the study of the neurodegeneration-related microstructural changes in PPA.
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Keyword:
2.1 Biological and endogenous factors; Acquired Cognitive Impairment; Aging; Alzheimer's disease; Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD); Alzheimer’s disease; Aphasia; Biomedical Imaging; Brain Disorders; Case-Control Studies; Clinical Research; Dementia; Diffusion; Diffusion Magnetic Resonance Imaging; Frontotemporal Dementia (FTD); Frontotemporal lobar degeneration; Humans; Magnetic resonance; Magnetic Resonance Imaging; Medical and Health Sciences; Neurodegenerative; Neurological; Neurosciences; Primary Progressive; Primary progressive aphasia; Rare Diseases
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URL: https://escholarship.org/uc/item/4td346vg
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Providing a parent-administered outcome measure in a bilingual family of a father and a mother of two adolescents with ASD: brief report.
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In: Developmental neurorehabilitation, vol 25, iss 2 (2022)
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Open access dataset of task-free hemodynamic activity in 4-month-old infants during sleep using fNIRS. ...
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Human cortical encoding of pitch in tonal and non-tonal languages.
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In: Nature communications, vol 12, iss 1 (2021)
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Resting functional connectivity in the semantic appraisal network predicts accuracy of emotion identification.
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Neural dynamics of semantic categorization in semantic variant of primary progressive aphasia.
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Resting functional connectivity in the semantic appraisal network predicts accuracy of emotion identification.
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A Therapeutic Relational Agent for Reducing Problematic Substance Use (Woebot): Development and Usability Study.
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In: Journal of medical Internet research, vol 23, iss 3 (2021)
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A Bayesian optimization approach for rapidly mapping residual network function in stroke. ...
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Age-related differences in the neural bases of phonological and semantic processes in the context of task-irrelevant information.
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Age-related differences in the neural bases of phonological and semantic processes.
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Age-related differences in resolving semantic and phonological competition during receptive language tasks.
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Sustained neural rhythms reveal endogenous oscillations supporting speech perception. ...
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Language networks in aphasia and health: A 1000 participant activation likelihood estimation meta-analysis. ...
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A Bayesian optimization approach for rapidly mapping residual network function in stroke.
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Expressive language development in adolescents with Down syndrome and fragile X syndrome: change over time and the role of family-related factors.
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In: Journal of neurodevelopmental disorders, vol 12, iss 1 (2020)
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New directions in clinical trials for frontotemporal lobar degeneration: Methods and outcome measures.
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In: Alzheimer's & dementia : the journal of the Alzheimer's Association, vol 16, iss 1 (2020)
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