九州大学 · 医学
Ohara教授の研究室は、高齢化が進む日本の高齢者を対象に、認知症の発症に影響を及ぼす生活習慣や代謝的要因の解明を主眼としています。特に、糖尿病や血糖変動、睡眠、喫煙、栄養状態、歯科状態といった生活習慣要因と認知症リスクの関連を疫学的・行動的アプローチで分析しています。研究は、予防に役立つ知見の提供を目的としており、日本における高齢者の健康長寿実現に貢献することを目指しています。
Figures are computed from collected data and may differ slightly.
Our findings suggest that diabetes is a significant risk factor for all-cause dementia, AD, and probably VaD. Moreover, 2-hour PG levels, but not FPG levels, are closely associated with increased risk of all-cause dementia, AD, and VaD.
The increased incidence and improved survival rate of AD could have resulted in the steep increase in AD prevalence in the Japanese elderly.
Tooth loss is associated with an increased risk of all-cause dementia and AD in the Japanese population.
Greater milk and dairy intake reduced the risk of dementia, especially AD, in the general Japanese population.
Short and long daily sleep duration and hypnotic use are risk factors for dementia and death in Japanese elderly adults.
Persistent smoking from mid- to late life is a significant risk factor for dementia and its subtypes in the general Japanese population.
The present findings suggest a significant association between increased serum sTREM2 levels and the risk of developing all-cause dementia, AD, and VaD in the general elderly Japanese population. ANN NEUROL 2019;85:47-58.
Our findings suggest that the total number of regions with grey matter atrophy among the medial temporal lobe, insula, hippocampus and amygdala is a significant predictor for developing dementia, especially AD, in the general older population.
APOE is an established susceptibility gene for late-onset Alzheimer's disease (LOAD). Recent genome-wide association studies have identified many additional susceptibility genes for LOAD in populations of European descent. However, there is little information on whether or not genetic variants in these genes are associated with other ethnicities. To investigate the association of seven genes identified by genome-wide association studies, we carried out a case-control study using 825 LOAD cases a
The APOE-ɛ4 allele is a risk factor for AD in the Japanese population. Information on APOE genotype improves AD risk assessment substantially beyond a model based on potential risk factors.
Objective: We investigated the association between glucose tolerance status defined by a 75-g oral glucose tolerance test (OGTT) and the development of dementia. Methods: A total of 1,017 community-dwelling dementia-free subjects aged 60 years who underwent the OGTT were followed up for 15 years. Outcome measure was clinically diagnosed dementia. Results: The age- and sex-adjusted incidence of all-cause dementia, Alzheimer disease (AD), and vascular dementia (VaD) were significantly higher in su
The association between diabetes mellitus and the risk of developing dementia has received much attention in epidemiological studies. However, the results from these studies are still inconclusive. An accurate population-based prospective cohort study of dementia was begun in 1985 in the town of Hisayama, Japan. To examine the association between the glucose tolerance status and development of dementia, a total of 1,017 community-dwelling dementia-free subjects aged > or = 60 years who underwent
Background Epidemiological evidence implies a link between heart disease and dementia. However, few prospective studies have assessed the association between serum NT-proBNP (N-terminal pro-B-type natriuretic peptide) levels and dementia. Methods and Results A total of 1635 community-dwelling Japanese elderly aged ≥60 years without dementia (57% women, mean age±SD 70.8±7.7 years) were followed up for 10 years. Serum NT-proBNP levels were divided into 4 categories (≤54, 55-124, 125-299, and ≥300
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