Journal Article

Regional Amyloid Deposition in Amnestic Mild Cognitive Impairment and Alzheimer's Disease Evaluated by 18FAV-45 Positron Emission Tomography in Chinese Population

Chuang, Wen-Li, Wey, Shiaw-Pyng, Hsu, Wen-Chuin, Yen, Tzu-Chen, Huang, Chin-Chang, Huang, Kuo-Lun, Hsieh, Chia-Ju, Hsiao, Ing-Tsung, Kuo, Hung-Chou, Kung, Mei-Ping, Wai, Yau-Yau, Lin, Kun-Ju

2013

Overview

To compare the neocortical amyloid loads among cognitively normal (CN), amnestic mild cognitive impairment (aMCI), and Alzheimer's disease (AD) subjects with [(18)F]AV-45 positron emission tomography (PET). [(18)F]AV-45 PET was performed in 11 CN, 13 aMCI, and 12 AD subjects to compare the cerebral cortex-to-whole cerebellum standard uptake value ratios (SUVRs) of global and individual volumes of interest (VOIs) cerebral cortex. The correlation between global cortical [(18)F]AV-45 SUVRs and Mini-Mental State Examination (MMSE) scores was analyzed. The global cortical [(18)F]AV-45 SUVRs were significantly different among the CN (1.08±0.08), aMCI (1.27±0.06), and AD groups (1.34±0.13) (p = 0.0003) with amyloidosis positivity rates of 9%, 62%, and 92% in the three groups respectively. Compared to CN subjects, AD subjects had higher SUVRs in the global cortical, precuneus, frontal, parietal, occipital, temporal, and posterior cingulate areas; while aMCI subjects had higher values in the global cortical, precuneus, frontal, occipital and posterior cingulate areas. There were negative correlations of MMSE scores with SUVRs in the global cortical, precuneus, frontal, parietal, occipital, temporal, posterior cingulate and anterior cingulate areas on a combined subject pool of the three groups after age and education attainment adjustment. Amyloid deposition occurs relatively early in precuneus, frontal and posterior cingulate in aMCI subjects. Higher [(18)F]AV-45 accumulation is present in parietal, occipital and temporal gyri in AD subjects compared to the aMCI group. Significant correlation between MMSE scores and [(18)F]AV-45 SUVRs can be observed among CN, aMCI and AD subjects.

• Publisher: Public Library of Science,Public Library of Science (PLoS)
• Subject: Activities of daily living / Advertising executives / Aged / Aged, 80 and over / Aging / Alzheimer Disease - diagnosis / Alzheimer Disease - metabolism / Alzheimer's disease / Alzheimers disease / Amnesia - diagnosis / Amnesia - metabolism / Amyloid / Amyloid - metabolism / Amyloidosis / Asian Continental Ancestry Group / Biomarkers / Brain / Brain - metabolism / Brain research / Cerebellum / Cerebral cortex / Cerebral Cortex - metabolism / Cognitive ability / Cognitive Dysfunction - metabolism / Correlation / Correlation analysis / Cortex (cingulate) / Cortex (frontal) / Cortex (occipital) / Cortex (parietal) / Cortex (temporal) / Dementia / Deposition / Emission analysis / Emissions / Female / Fluorodeoxyglucose F18 / Hospitals / Humans / Impairment / Male / Medical imaging / Medicine / Memory / Middle Aged / Neurodegenerative diseases / Neurology / Nuclear medicine / Physicians / Positron emission / Positron emission tomography / Positron-Emission Tomography - methods / Temporal lobe / Tomography