Jyri J. Virta

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STUDY OBJECTIVES Previous studies with limited follow-up times have suggested that sleep-related traits are associated with an increased risk of incident dementia or cognitive decline. We investigated the association between midlife sleep characteristics and late life cognitive function. DESIGN A follow-up study with a median follow-up time of 22.5 (range(More)
Cardiovascular risk factors increase the risk of dementia in later life. The aims of the current study were to assess the effect of multiple midlife cardiovascular risk factors on the risk of cognitive impairment in later life, and to assess the validity of the previously suggested CAIDE Study risk score predicting dementia risk 20 years later. A total of(More)
BACKGROUND Sporadic Alzheimer disease (AD) is a multifactorial disease to which both genetic and environmental factors contribute. Therefore, twin pairs are useful in studying its pathogenesis and aetiology. Cerebral glucose metabolism has been found to be reduced in AD patients. METHODS Cerebral glucose metabolism was studied in seven monozygotic (MZ)(More)
Mitochondrial recessive ataxia syndrome (MIRAS) is a common cause of autosomal recessive juvenile- or adult-onset ataxia, at least in Scandinavia. MIRAS patients are homozygous or compound heterozygous for POLG mutations W748S and A467T. Because many first-degree relatives of MIRAS patients in the studied families have reported neurological symptoms and(More)
1533 Sleep Characteristics Associated with Cognitive Function—Virta et al INTRODUCTION As of today, the medications available for Alzheimer disease (AD) and other dementia disorders are of limited value, offering only symptomatic relief. Therefore, the recognition of possibly modifiable risk factors for dementia and cognitive impairment is of utmost(More)
Positron emission tomography (PET) with 2-deoxy-2[(18)F]-fluoro-D-glucose (FDG) can be used to estimate regional cerebral glucose metabolism (rCMRgluc). FDG-PET studies have shown rCMRgluc to be reduced especially in temporal and parietal cortices in Alzheimer's disease (AD). A previous study on monozygotic twins discordant for AD showed that the rCMRgluc(More)
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