Unknown

Dataset Information

0

Evolution of neurodegeneration-imaging biomarkers from clinically normal to dementia in the Alzheimer disease spectrum.


ABSTRACT: The availability of antemortem biomarkers for Alzheimer's disease (AD) enables monitoring the evolution of neurodegenerative processes in real time. Pittsburgh compound B (PIB) positron emission tomography (PET) was used to select participants in the Mayo Clinic Study of Aging and the Mayo Alzheimer's Disease Research Center with elevated ?-amyloid, designated as "A+," and hippocampal volume and (18)fluorodeoxyglucose (FDG) positron emission tomography were used to characterize participants as having evidence of neurodegeneration ("N+") at the baseline evaluation. There were 145 clinically normal (CN) A+ individuals, 62 persons with mild cognitive impairment (MCI) who were A+ and 20 with A+ AD dementia. Over a period of 1-6 years, MCI A+N+ individuals showed declines in medial temporal, lateral temporal, lateral parietal, and to a lesser extent, medial parietal regions for both FDG standardized uptake value ratio and gray matter volume that exceeded declines seen in the CN A+N+ group. The AD dementia group showed declines in the same regions on FDG standardized uptake value ratio and gray matter volume with rates that exceeded that in MCI A+N+. Expansion of regional involvement and faster rate of neurodegeneration characterizes progression in the AD pathway.

SUBMITTER: Knopman DS 

PROVIDER: S-EPMC5018437 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature

altmetric image

Publications


The availability of antemortem biomarkers for Alzheimer's disease (AD) enables monitoring the evolution of neurodegenerative processes in real time. Pittsburgh compound B (PIB) positron emission tomography (PET) was used to select participants in the Mayo Clinic Study of Aging and the Mayo Alzheimer's Disease Research Center with elevated β-amyloid, designated as "A+," and hippocampal volume and (18)fluorodeoxyglucose (FDG) positron emission tomography were used to characterize participants as h  ...[more]

Similar Datasets

| S-EPMC4999168 | biostudies-literature
| S-EPMC4451046 | biostudies-literature
| S-EPMC5266522 | biostudies-literature
| S-EPMC5606918 | biostudies-literature
| S-EPMC10499811 | biostudies-literature
| S-EPMC6556092 | biostudies-literature
| S-EPMC3854826 | biostudies-other
| S-EPMC6669933 | biostudies-literature
| S-EPMC10042585 | biostudies-literature
| S-EPMC3796183 | biostudies-literature