P3-109 Religiosity predicts dementia in Israeli men (original) (raw)

2004, Neurobiology of Aging

were retained if significant. Results: In the final modal, MCI (OR = 28.9, p < 0.001), LLD (OR = 5.2, p = 0.010), APOE (OR = 3.1, p = 0.002), and age (OR = 1.1, p = 0.004 for each additional year) were significant main effects, with a trend for MCI by LLD interaction (p = 0.084). CVD (p = 0.357), education (p = 0.365), and gender (p = 0.407) were not significant. LLD by APOE interaction was significant (p = 0.045) with effect of LLD greater among NC (OR = 5.2) than among MCI (OR = 1.52). Analyses were repeated using only the sub-sample with CA at follow-up with comparable results. Conclusions: These results suggest that risk for development of dementia may be an interaction of presence of MCI, LLD, and the APOE gene, suggesting the incremental effect of LLD is greatest among those with no e4 allele.

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Alzheimer's disease and apolipoprotein e-4 allele in an amish population

Annals of Neurology, 1996

Alzheimer's Disease (AD) is a complex genetic disorder with four loci already identified. Mutations in three of these, the amyloid precursor protein, presenilin I, and preseuilin 11, cause early-onset AD. The apolipoprotein E (APOE) gene contributes primarily to late-onset AD. The APOE-4 allele acts in a dose-related fashion to increase risk and decrease the age-of-onset distribution in AD. We examined the effect of APOE on AD in a previously unstudied Amish population that has a lower prevalence of dementia compared with other populations. We sampled a large inbred family with 6 late-onset AD members. We also genotyped 53 individuals from the general Amish population as controls for the APOE allele frequency estimates. The frequency of the APOE-4 allele in the Amish controls was 0.037 2 0.02. This differed significantly compared with three independent sets of non-Amish white controls (p < 2 x lo-*, p < 6 x w5, and

Genetic and Environmental Epidemiology of Alzheimer's Disease in Arabs Residing in Israel

Journal of Molecular Neuroscience, 2003

We have found an unusually high prevalence of Alzheimer's disease (AD) in Wadi Ara, an inbred Arab community in northern Israel. Allele frequencies of 4.5% and 3.5% were found for the apolipoprotein E e4 allele among AD cases and nondemented controls, respectively, showing that other genetic or environmental influences must be responsible. Family studies revealed that more than one-third of the AD cases are members of one hamula (tribal group) within Wadi Ara. We hypothesize that the high risk of AD in this genetic isolate may be attributable to a founder effect enhanced by consanguinity. It is also possible that smoking or high fat diet are responsible. To map chromosomal loci contributing to AD susceptibility, we conducted a genome scan from specific hamulas and followed candidate regions found to be linked to disease. Markers from 18 chromosomal regions showed significant allelic association with AD. Smoking was very common in men but was not linked to the presence of AD in Wadi Ara, The unique characteristics of this community, together with the large amount of human genome data, should allow for the identification of AD genes in candidate regions.

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