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Plasma proteome profiling identifies changes associated to AD but not to FTD University of Antwerp
Background Frontotemporal dementia (FTD) is caused by frontotemporal lobar degeneration (FTLD), characterized mainly by inclusions of Tau (FTLD-Tau) or TAR DNA binding43 (FTLD-TDP) proteins. Plasma biomarkers are strongly needed for specific diagnosis and potential treatment monitoring of FTD. We aimed to identify specific FTD plasma biomarker profiles discriminating FTD from AD and controls, and between FTD pathological subtypes. In addition, ...
C9ORF72 repeat expansions and other FTD gene mutations in a clinical AD patient series from Mayo Clinic University of Antwerp
Alzheimer disease (AD) and frontotemporal dementia (FTD) are two frequent forms of primary neurodegenerative dementias with overlapping clinical symptoms. Pathogenic mutations of the amyloid precursor protein (APP) and presenilins 1 and 2 (PSEN1, PSEN2) genes have been linked to familial early-onset forms of AD; however, more recently mutations in the common FTD genes encoding the microtubule associated protein tau (MAPT), progranulin (GRN) and ...
Downregulation of exosomal miR-204-5p and miR-632 as a biomarker for FTD University of Antwerp
Objective To determine whether exosomal microRNAs (miRNAs) in cerebrospinal fluid (CSF) of patients with frontotemporal dementia (FTD) can serve as diagnostic biomarkers, we assessed miRNA expression in the Genetic Frontotemporal Dementia Initiative (GENFI) cohort and in sporadic FTD. Methods GENFI participants were either carriers of a pathogenic mutation in progranulin, chromosome 9 open reading frame 72 or microtubule-associated protein tau ...
Brain kynurenine pathway metabolite levels may reflect extent of neuroinflammation in ALS, FTD and early onset AD University of Antwerp
Objectives: Despite distinct clinical profiles, amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) patients share a remarkable portion of pathological features, with a substantial percentage of patients displaying a mixed disease phenotype. Kynurenine metabolism seems to play a role in dementia-associated neuroinflammation and has been linked to both diseases. We aimed to explore dissimilarities in kynurenine pathway ...
Expanded GGGGCC Hexanucleotide Repeat in Noncoding Region of C9ORF72 Causes Chromosome 9p-Linked FTD and ALS University of Antwerp
Several families have been reported with autosomal-dominant frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), genetically linked to chromosome 9p21. Here, we report an expansion of a noncoding GGGGCC hexanucleotide repeat in the gene C9ORF72 that is strongly associated with disease in a large FTD/ALS kindred, previously reported to be conclusively linked to chromosome 9p. This same repeat expansion was identified in the ...
Neuronal inclusion protein TDP-43 has no primary genetic role in FTD and ALS Vrije Universiteit Brussel Ghent University KU Leuven University of Antwerp
The nuclear TAR DNA binding protein (TDP-43) is deposited in ubiquitin-positive inclusions in frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), two clinicopathologically overlapping neurodegenerative diseases. In this study we excluded mutations and copy number variations in the gene encoding TDP-43 (TARDBP) from an extended series of 173 FTD and 237 ALS patients. Further, we did not identify association of common genetic ...
Trajectories of brain and hippocampal atrophy in FTD with mutations in MAPT or GRN University of Antwerp
Objective: To use multiple serial MRI to assess rates and trajectories of brain and hippocampal atrophy in subjects with frontotemporal dementia (FTD) with progranulin (GRN) or microtubule-associated protein tau (MAPT) gene mutations. Methods: In this case-control study, we identified 8 subjects with mutations in GRN and 12 subjects with mutations in MAPT who had at least 2 serial MRIs. Serial MRIs were registered to baseline MRI for each ...
Differential early subcortical involvement in genetic FTD within the GENFI cohort University of Antwerp KU Leuven
Background Studies have previously shown evidence for presymptomatic cortical atrophy in genetic FTD. Whilst initial investigations have also identified early deep grey matter volume loss, little is known about the extent of subcortical involvement, particularly within subregions, and how this differs between genetic groups. Methods 480 mutation carriers from the Genetic FTD Initiative (GENFI) were included (198 GRN, 202 C9orf72, 80 MAPT), ...