Influence of Cognitive Status, Age, and APOE-4 Genetic Risk on Brain FDDNP Positron-Emission Tomography Imaging in Persons Without Dementia

被引：51

作者：

Small, Gary W. ^{[1
,2
,5
,6
]}

Siddarth, Prabha ^{[1
,2
]}

Burggren, Alison C. ^{[1
,2
]}

Kepe, Vladimir ^{[3
]}

Ercoli, Linda M. ^{[1
,2
]}

Miller, Karen J. ^{[1
,2
]}

Lavretsky, Helen ^{[1
,2
]}

Thompson, Paul M. ^{[4
]}

Cole, Greg M. ^{[4
,5
]}

Huang, S. C. ^{[3
]}

Phelps, Michael E. ^{[3
]}

Bookheimer, Susan Y. ^{[1
,2
]}

Barrio, Jorge R. ^{[3
]}

机构：

[1] Univ Calif Los Angeles, Dept Psychiat & Biobehav Sci, David Geffen Sch Med, Los Angeles, CA 90024 USA

[2] Univ Calif Los Angeles, Semel Inst Neurosci & Human Behav, David Geffen Sch Med, Los Angeles, CA 90024 USA

[3] Univ Calif Los Angeles, Dept Mol & Med Pharmacol, David Geffen Sch Med, Los Angeles, CA 90024 USA

[4] Univ Calif Los Angeles, Dept Neurol, David Geffen Sch Med, Los Angeles, CA 90024 USA

[5] Univ Calif Los Angeles, Alzheimers Dis Ctr, David Geffen Sch Med, Los Angeles, CA 90024 USA

[6] Univ Calif Los Angeles, Ctr Aging, David Geffen Sch Med, Los Angeles, CA 90024 USA

来源：

ARCHIVES OF GENERAL PSYCHIATRY | 2009年 / 66卷 / 01期

关键词：

E EPSILON-4 ALLELE; ALZHEIMERS-DISEASE; FAMILY-HISTORY; IMPAIRMENT; DECLINE; POPULATION; PREVALENCE; GENOTYPE; PLAQUES; HEALTH;

D O I：

10.1001/archgenpsychiatry.2008.516

中图分类号：

R749 [精神病学];

学科分类号：

100205 ;

摘要：

Context: Amyloid senile plaques and tau neurofibrillary tangles are neuropathological hallmarks of Alzheimer disease that accumulate in the brains of people without dementia years before they develop dementia. Positron emission tomography (PET) scans after intravenous injections of 2-(1-{6-[(2-[F-18]fluoroethyl)(methyl)amino]-2-naphthyl}ethylidene)malononitrile (FDDNP), which binds to plaques and tangles in vitro, demonstrate increased cerebral binding in patients with Alzheimer disease compared with cognitively intact controls. Here we investigated whether known risk factors for Alzheimer disease and dementia are associated with FDDNP-PET binding. Objective: To determine if impaired cognitive status, older age, apolipoprotein E-4 (APOE-4) genetic risk for Alzheimer disease, family history of dementia, and less education are associated with increased regional cerebral FDDNP-PET binding. Design: Cross-sectional clinical study. Setting: A university research institute. Participants: Volunteer sample of 76 middle-aged and older persons without dementia (mean age, 67 years) including 36 with mild cognitive impairment. Of the 72 subjects with genetic data, 34 were APOE-4 carriers. Main Outcome Measures: The FDDNP-PET signal in brain regions of interest, including medial and lateral temporal, posterior cingulate, parietal, and frontal. Results: For all regions studied, cognitive status was associated with increased FDDNP binding (P < .02 to .005). Older age was associated with increased lateral temporal FDDNP binding. Carriers of APOE-4 demonstrated higher frontal FDDNP binding than noncarriers. In the mild cognitive impairment group, age was associated with increased medial and lateral temporal FDDNP binding, and APOE-4 carriers had higher medial temporal binding than noncarriers. Conclusions: Impaired cognitive status, older age, and APOE-4 carrier status are associated with increased brain FDDNP-PET binding in persons without dementia, consistent with previous clinical and postmortem studies associating these risk factors with amyloid plaque and tau tangle accumulation. Stratifying subject groups according to APOE-4 carrier status, age, and cognitive status may therefore be an informative strategy in future clinical trials using FDDNP-PET.

引用

页码：81 / 87

页数：7

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