Tomoyuki Ohara

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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(More)
Diabetes mellitus (DM) is considered to be a risk factor for dementia including Alzheimer's disease (AD). However, the molecular mechanism underlying this risk is not well understood. We examined gene expression profiles in postmortem human brains donated for the Hisayama study. Three-way analysis of variance of microarray data from frontal cortex, temporal(More)
BACKGROUND Small deep brain infarcts are often caused by two different vascular pathologies: 1. atheromatous occlusion at the orifice of large caliber penetrating arteries termed branch atheromatous disease (BAD) and 2. lipohyalinotic degenerative changes termed lipohyalinotic degeneration (LD). We herein analyze and describe the characteristics of these 2(More)
BACKGROUND AND PURPOSE Fluid-attenuated inversion recovery vascular hyperintensity (FVH) is often identified in patients with acute ischemic stroke. The purpose of this study was to determine the clinical significance of FVH in patients with transient ischemic attack (TIA). METHODS Consecutive inpatients with TIA who underwent MRI within 24 hours of(More)
OBJECTIVE We examined the association between the ratio of serum eicosapentaenoic acid to arachidonic acid (EPA/AA) or the docosahexaenoic acid (DHA)/AA and the development of cardiovascular disease in a general Japanese population. METHODS A total of 3103 community-dwelling Japanese individuals aged ≥40 years were followed up for an average of 5.1 years.(More)
BACKGROUND Progressive motor deficits (PMD) are common in cerebral penetrating artery disease (PAD) during the acute stage and leads to severe disability. Reliable predictors and stroke mechanism for PMD in PAD have been yet to be elucidated. Moreover, difference of predictors between topographically classified PAD has not ever been systematically studied.(More)
BACKGROUND To our knowledge, there are no previous reports that assessed the association between dietary patterns and risk of dementia in Asian populations. OBJECTIVE We investigated dietary patterns and their potential association with risk of incident dementia in a general Japanese population. DESIGN A total of 1006 community-dwelling Japanese(More)
BACKGROUND Platelet-derived microparticles (PDMPs) have attracted attention as blood coagulation-promoting, endothelial cell-activating factors. The objective of this study was to determine the parameters associated with elevated PDMP levels and examine their relationship with atherosclerotic lesions of main intracranial and extracranial arteries. (More)
BACKGROUND AND PURPOSE Patients with acute lacunar infarction in the lenticulostriate artery (LSA) territory often show progression of motor deficits (PMD) after admission. The purpose of our study is to identify predictors for PMD using the findings of diffusion-weighted imaging (DWI) on admission. METHODS From January 2005 to December 2008, we studied(More)
The associations between blood pressure and dementia have been inconclusive. We followed up a total of 668 community-dwelling Japanese individuals without dementia, aged 65 to 79 years, for 17 years and examined the associations of late-life and midlife hypertension with the risk of vascular dementia and Alzheimer disease using the Cox proportional hazards(More)