Cited by 47Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsMedical Imaging Techniques and Applications

Effects of age on the glucose metabolic changes in mild cognitive impairment

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Kantarci, K., Senjem, M.L., Lowe, V.J., Wiste, H.J., Weigand, S.D., Kemp, B.J., Frank, A.R., Shiung, M.M. +4 more·2010·American Journal of Neuroradiology

Abstract

BACKGROUND AND PURPOSE: Decreased glucose metabolism in the temporal and parietal lobes on FDG-PET is recognized as an early imaging marker for the AD pathology. Our objective was to investigate the effects of age on FDG-PET findings in aMCI. MATERIALS AND METHODS: Twenty-five patients with aMCI at 55–86 years of age (median = 73 years) and 25 age- and sex-matched CN subjects underwent FDG-PET. SPM5 was used to compare the FDG uptake in patients in aMCI-old (>73 years) and aMCI-young (≤73 years) groups with CN subjects. The findings in the aMCI-old patients were independently validated in a separate cohort of 10 aMCI and 13 CN subjects older than 73 years of age. RESULTS: The pattern of decreased glucose metabolism and gray matter atrophy in the medial temporal, posterior cingulate, precuneus, lateral parietal, and temporal lobes in aMCI-young subjects was consistent with the typical pattern observed in AD. The pattern of glucose metabolic changes in aMCI-old subjects was different, predominantly involving the frontal lobes and the left parietal lobe. Gray matter atrophy in aMCI-old subjects was less pronounced than that in the aMCI-young subjects, involving the hippocampus and the basal forebrain in both hemispheres CONCLUSIONS: Pathologic heterogeneity may be underlying the absence of AD-like glucose metabolic changes in older compared with younger patients with aMCI. This may be an important consideration for the clinical use of temporoparietal hypometabolism on FDG-PET as a marker for early diagnosis of AD in aMCI.

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Authors
Kantarci, K., Senjem, M. L., Lowe, V. J., Wiste, H. J., Weigand, S. D., Kemp, B. J., Frank, A. R., Shiung, M. M., Boeve, B. F., Knopman, D. S., Petersen, R. C., & Jack, C. R.
Affiliations
Mayo Clinic (US)
Corresponding author
Kantarci, K.
Venue
American Journal of Neuroradiology
Published
2010-03-18
Volume
31
Issue
7
Pages
1247-1253
ISSN
  • 0195-6108 (ISSN-L)
  • 1936-959X
OpenAlex
W2166123150
Cited by
47
References
33
Citations by year
2025: 2 · 2023: 2 · 2021: 2 · 2020: 1 · 2019: 1 · 2018: 5 · 2017: 4 · 2016: 6 · 2015: 3 · 2014: 9 · 2013: 5 · 2012: 1
FWCI
2.50
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • American Journal of Neuroradiology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (AG11378, AG16574)
  • National Institute on Aging (K23AG030935, AG-06786, AG 16574, U01AG006786, R01AG011378, AG-11378, R37AG011378, P50AG016574)
  • National Center for Research Resources (KL2RR024151, RR024151)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
Keywords
mild cognitive impairment, age effects, glucose metabolism, FDG-PET, Alzheimer's disease, temporal lobe hypometabolism, gray matter atrophy, hippocampal atrophy, early diagnosis
MeSH terms
Aged, Aged, 80 and over, Aging, Alzheimer Disease, Atrophy, Blood Glucose, Cognition Disorders, Female, Humans, Male, Middle Aged, Parietal Lobe, Temporal Lobe, Reproducibility of Results, Biomarkers, Fluorodeoxyglucose F18, Early Diagnosis, Positron-Emission Tomography

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