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Author

B. Bellaver

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Open access Sep 2026

Age at Diagnosis and Clinical and Genetic Profiles Among Adults With Attention-Deficit/Hyperactivity Disorder

Key Points Question Do demographic, clinical, and genetic profiles of adults diagnosed with attention-deficit/hyperactivity disorder (ADHD) in adulthood differ from adults diagnosed with ADHD in childhood or adolescence, and how do profiles of both groups compare with matched controls without ADHD? Findings In this cro...

D. Leffa, Guilherme Bauer-Negrini, B. Bellaver et al. · 0 citations
Open access Sep 2026

Tau‐PET correlates of mild behavioral impairment in preclinical and prodromal Alzheimer's disease: A head‐to‐head comparison of Flortaucipir and MK6240

Abstract INTRODUCTION We compared the association between mild behavioral impairment (MBI) and first‐ versus second‐generation tau‐positron emission tomography (PET) tracers in preclinical and prodromal Alzheimer's disease (AD). METHODS We assessed 110 individuals with head‐to‐head [18F]MK6240 and [18F]Flortaucipir tau...

I. Bizzi, Arthur C. Macedo, Lydia Trudel et al. · 0 citations
Open access Sep 2026

A Harmonized Visual Reading Framework for Tau PET Staging in Alzheimer Disease

Key Points Question Can a harmonized visual reading framework enable reliable, tracer-agnostic staging of tau positron emission tomography (PET) pathology for clinical use? Findings In this multicenter cross-sectional study of 681 participants scanned with multiple tau PET radiotracers, a 5-class harmonized visual read...

E. Ruppert, M. Vermeiren, Marina Scop Medeiros et al. · 0 citations
Open access Sep 2026

Astrocyte reactivity identifies p-tau217-positive individuals at elevated risk of cognitive decline across the Alzheimer’s disease continuum

It is shown that elevated plasma GFAP significantly modulates the association between p-tau217 and both cross-sectional cognitive severity and longitudinal clinical decline, and support that astrocyte reactivity is associated with greater cognitive impairment and faster clinical decline among individuals with elevated...

B. Bellaver, G. Povala, P. C. L. Ferreira et al. · 0 citations
Open access Jul 2026

Altered T1w/T2w-FLAIR Ratio in White Matter Hyperintensities as an Indicator of Structural Integrity Loss: Association with Alzheimer’s Disease and Vascular Dementia

Residualized WMH T1w/T2w-FLAIR ratio captures lesion-specific microstructural variation missed by volumetric measures, consistent with vascular-gliotic injury in VD and coexisting amyloid-linked demyelination in AD.

Rushil Srirambhatla, J. Campion, T. Desmidt et al. · 0 citations
Aug 2026

Association Between Plasma GFAP and Medial Temporal Atrophy and Cognition in Amyloid-Negative Cerebrovascular Disease.

In Aβ-negative cognitively impaired individuals with high cerebrovascular burden, elevated plasma GFAP is associated with medial temporal atrophy and cognitive decline, suggesting GFAP may capture astrocyte-reactivity relevant to vascular cognitive impairment beyond amyloid pathology.

M. S. Oliveira-Junior, M. Rodrigues, Livia Amaral et al. · 0 citations

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