Traumatic brain injury as a risk factor for Alzheimer disease. Comparison of two retrospective autopsy cohorts with evaluation of ApoE genotype

被引：56

作者：

Jellinger K.A. ^{[1
]}

Paulus W. ^{[2
]}

Wrocklage C. ^{[2
]}

Litvan I. ^{[3
]}

机构：

[1] L. Boltzmann Inst. Clin. Neurobiol., A-1140 Vienna, Baumgartner Hoehe 1, B-Bldg.

[2] Department of Neuropathology, University of Munster School of Med., Munster

[3] Cognitive Neoropharmacology Unit, H.M. Jackson Foundation, Bethesda, MD

来源：

BMC Neurology | / 1卷 / 1期

关键词：

Traumatic Brain Injury; Alzheimer Disease; Dementia With Lewy Body; Severe Traumatic Brain Injury; Braak Stage;

D O I：

10.1186/1471-2377-1-3

中图分类号：

学科分类号：

摘要：

Background and Purpose: The impact of traumatic brain injury (TBI) on the pathogenesis of Alzheimer disease (AD) is still controversial. The aim of our retrospective autopsy study was to assess the impact of TBE and ApoE allele frequency on the development of AD. Material and Methods: We examined 1. the incidence of AD pathology (Braak stageing, CERAD, NIA-Reagan Institute criteria) in 58 consecutive patients (mean age ± SD 77.0 ± 6.8 years) with residual closed TBI lesions, and 2. the frequency of TBI residuals in 57 age-matched autopsy proven AD cases. In both series, ApoE was evaluated from archival paraffin-embedded brain material. Results: 1. TBE series: 12.1 % showed definite and 10.3% probable AD (mean age 77.6 and 75.2 years), only 2/13 with ApoEε3/4. From 45 (77.6%) non-AD cases (mean age 78.2 years), 3 had ApoEε3/4. The prevalence of 22.4% AD in this small autopsy cohort was significantly higher than 3.3% in a recent large clinical series and 14% in the general population over age 70. 2. In the AD cohort with ApoEε4 allele frequency of 30% similar to other AD series, residuals of closed TBI were seen in 4 brains (7%) (mean age ± SD 78.2 ± 6.4), all lacking the ApoEε4 allele. TBI incidence was slightly lower than 8.5% in the clinical MIRAGE study. Conclusions: The results of this first retrospective autopsy study of TBI, ApoEε allele frequency, and AD confirm clinical studies suggesting severe TBI to be a risk factor for the development AD higher in subjects lacking ApoEε4 alleles. Further studies in larger autopsy series are needed to elucidate the relationship between TBI, genetic predisposition, and AD. © 2001 Jellinger et al; licensee BioMed Central Ltd.

引用

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