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Träfflista för sökning "hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Geriatrik) "

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1.
  • Kramberger, Milica Gregoric, et al. (författare)
  • Association between EEG abnormalities and CSF biomarkers in a memory clinic cohort
  • 2013
  • Ingår i: Dementia and Geriatric Cognitive Disorders. - : S. Karger. - 1420-8008 .- 1421-9824. ; 36:5-6, s. 319-328
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: The aim of the study was to describe distinct electroencephalogram (EEG) phenotypes defined after routine visual EEG analysis in a large memory clinic cohort and to investigate their relationship to cerebrospinal fluid (CSF) biomarkers. Methods: Patients with Alzheimer's disease (n = 131), mild cognitive impairment (n = 285), subjective cognitive impairment (n = 310), and mixed dementia (n = 29) were assessed clinically with neuroimaging, EEG and CSF investigations. EEG phenotypes were based on frequency of background activity (BA) and presence and degree of episodic abnormalities (EA). Results: BA and EA differed significantly (p < 0.001) between diagnostic groups. A lower CSF amyloid β42/phospho-tau ratio and higher total tau were associated with slower BA (p < 0.01) and a higher degree of EA (p < 0.04). Conclusions: Slowing of BA in combination with EA seems to be related to biological markers of neurodegeneration
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2.
  • Mangialasche, Francesca, et al. (författare)
  • Serum levels of vitamin E forms and risk of cognitive impairment in a Finnish cohort of older adults
  • 2013
  • Ingår i: Experimental Gerontology. - 0531-5565 .- 1873-6815. ; 48:12, s. 1428-1435
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Vitamin E includes eight natural antioxidant compounds (four tocopherols and four tocotrienols), but a-tocopherol has been the main focus of investigation in studies of cognitive impairment and Alzheimer's disease. Objective: To investigate the association between serum levels of tocopherols and tocotrienols, markers of vitamin E oxidative/nitrosative damage (alpha-tocopherylquinone, 5-nitro-gamma-tocopherol) and incidence of cognitive impairment in a population-based study. Design: A sample of 140 non-cognitively impaired elderly subjects derived from the Cardiovascular Risk Factors, Aging, and Dementia (CAIDE) study was followed-up for 8 years to detect cognitive impairment, defined as development of mild cognitive impairment (MCI) or Alzheimer's dementia. The association between baseline serum vitamin E and cognitive impairment was analyzed with multiple logistic regression after adjusting for several confounders. Results: The risk of cognitive impairment was lower in subjects in the middle tertile of the alpha-tocopherol/cholesterol ratio than in those in the lowest tertile: the multiadjusted odds ratio (OR) with 95% confidence interval (CI) was 0.27 (0.10-0.78). Higher incidence of cognitive impairment was found in the middle [OR (95% CI): 3.41 (1.29-9.06)] and highest [OR (95% CI): 2.89 (1.05-7.97)] tertiles of the 5-NO2-gamma-tocopherol/gamma-tocopherol ratio. Analyses of absolute serum levels of vitamin E showed lower risk of cognitive impairment in subjects with higher levels of gamma-tocopherol, beta-tocotrienol, and total tocotrienols. Conclusions: Elevated levels of tocopherol and tocotrienol forms are associated with reduced risk of cognitive impairment in older adults. The association is modulated by concurrent cholesterol concentration. Various vitamin E forms might play a role in cognitive impairment, and their evaluation can provide a more accurate measure of vitamin E status in humans.
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3.
  • Vuorinen, Miika, et al. (författare)
  • Changes in vascular factors 28 years from midlife and late-life cortical thickness
  • 2013
  • Ingår i: Neurobiology of Aging. - 0197-4580 .- 1558-1497. ; 34:1, s. 100-109
  • Tidskriftsartikel (refereegranskat)abstract
    • We assessed midlife blood pressure (BP), body mass index, total cholesterol, and their changes over time in relation to cortical thickness on magnetic resonance imaging 28 years later in 63 elderly at risk of dementia. Participants in the population-based Cardiovascular Risk Factors, Aging, and Dementia study were first examined at midlife. A first follow-up was conducted after 21 years, and a second follow-up after an additional 7 years. Magnetic resonance images from the second follow-up were analyzed using algorithms developed at McGill University, Montreal, Canada. Midlife hypertension was related to thinner cortex in several brain areas, including insular, frontal, and temporal cortices. In elderly with thinner insular cortex, there was a continuous decline in systolic BP and an increase in pulse pressure after midlife, while in elderly with thicker insular cortex the decline in systolic BP started at older ages, paralleled by a decline in pulse pressure. No associations were found between body mass index, cholesterol, or apolipoprotein E ε4 allele and cortical thickness in this group of elderly at risk individuals.
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4.
  • Gustafson, Lars, et al. (författare)
  • A factor analytic approach to symptom patterns in dementia.
  • 2010
  • Ingår i: International Journal of Alzheimer's Disease. - : Hindawi Limited. - 2090-0252 .- 2090-8024.
  • Tidskriftsartikel (refereegranskat)abstract
    • Previous publications have shown a high diagnostic sensitivity and specificity of three short clinical rating scales for Alzheimer's disease (AD), frontotemporal dementia (FTD), and vascular dementia (VaD) validated against neuropathological (NP) diagnoses. In this study, the aim was to perform an exploratory factor analysis of the items in these clinical rating scales. The study included 190 patients with postmortem diagnoses of AD (n = 74), VaD (n = 33), mixed AD/VaD (n = 31), or FTD (n = 52). The factor analysis produced three strong factors. Factor 1 contained items describing cerebrovascular disease, similar to the Hachinski Ischemic Score. Factor 2 enclosed major clinical characteristics of FTD, and factor 3 showed a striking similarity to the AD scale. A fourth symptom cluster was described by perception and expression of emotions. The factor analyses strongly support the construct validity of the diagnostic rating scales.
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5.
  • Hedman, Annicka, et al. (författare)
  • Patterns of functioning in older adults with mild cognitive impairment : a two-year study focusing on everyday technology use
  • 2013
  • Ingår i: Aging & Mental Health. - 1360-7863 .- 1364-6915. ; 17:6, s. 679-688
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: Early detection is vital for persons with mild cognitive impairment (MCI) who are at risk of activity and participation limitations, and crosssectional studies suggest the ability to use everyday technology (ET) to be a sensible tool. However, group level analyses fail to inform us about how functioning can vary over time for individuals. This study aimed at exploring and describing patterns of functioning over two years in a sample newly classified with MCI, with a special focus on perceived difficulty in ET use and involvement in everyday activities. In addition, cognitive functioning and conversion to dementia were studied. Method: 37 older adults (aged 55) with MCI were assessed at inclusion, and at 6, 12, and 24 months. Longitudinal case plots for the variables under study were analyzed based on strict criteria using a person-oriented approach. Paired t-tests from baseline and 24 months were also conducted to analyze change. Results: The 32 participants who remained in the study after two years showed three distinct patterns of functioning over time: stable/ascending (n = 10), fluctuating (n = 10), and descending (n = 12), with the highest conversion to dementia in the descending pattern (58%). The perceived ability to use ET decreased or fluctuated in 50% of the sample. However, on a group level, a significant difference between baseline and 24 months was found only regarding cognitive function. Conclusion: As the need for support is individual and likely to alter over time, repeated evaluations of activity involvement and difficulty in ET use are suggested to target timely interventions for persons with MCI.
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8.
  • Brun, Arne, et al. (författare)
  • The Birth and Early Evolution of the Frontotemporal Dementia (FTD) Concept.
  • 2011
  • Ingår i: Journal of Molecular Neuroscience : MN. - : Humana Press. - 1559-1166. ; 45, s. 324-329
  • Tidskriftsartikel (refereegranskat)abstract
    • An historical overview of the development of the concept of frontotemporal dementia is presented, regarding the last 30 years, using as a backbone the conferences held on this theme, with a start in 1986 in Lund, Sweden. Since then, a dramatic increase in research activities and publications has rapidly expanded our knowledge in this field, a step necessary for the ultimate goal to find an effective treatment of this devastating disorder.
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9.
  • de Frias, Cindy M, et al. (författare)
  • Cholesterol and triglycerides moderate the effect of apolipoprotein E on memory functioning in older adults
  • 2007
  • Ingår i: The journals of gerontology. Series B, Psychological sciences and social sciences. - Washington : The gerontological society of America. - 1079-5014 .- 1758-5368. ; 62:2, s. P112-P118
  • Tidskriftsartikel (refereegranskat)abstract
    • We used data from the Betula Study to examine associations between total cholesterol, triglycerides, and apolipoprotein E on 10-year changes in cognitive performance. Tests assessing episodic memory (recall and recognition), semantic memory (knowledge and fluency), and visuospatial ability (block design) were administered to 524 nondemented adults (initial age of 55-80 years); multilevel modeling was applied to the data. Higher triglyceride levels were associated with a decline in verbal knowledge. Lipid levels moderated the influence of apolipoprotein E on episodic memory, such that among epsilon 4 allele carriers, decline in recognition was noted for individuals with higher cholesterol levels. Cholesterol and triglyceride levels are pharmacologically modifiable risk factors that account for variation In normal cognitive aging.
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10.
  • Enache, Daniela, et al. (författare)
  • CAIDE Dementia Risk Score and biomarkers of neurodegeneration in memory clinic patients without dementia
  • 2016
  • Ingår i: Neurobiology of Aging. - 0197-4580 .- 1558-1497. ; 42, s. 124-131
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this study was to explore cross-sectional associations between Cardiovascular Risk Factors, Aging and Dementia Study (CAIDE) Dementia Risk Score and dementia-related cerebrospinal fluid and neuroimaging biomarkers in 724 patients without dementia from the Memory Clinic at Karolinska University Hospital, Huddinge, Sweden. We additionally evaluated the score's capacity to predict dementia. Two risk score versions were calculated: one including age, gender, obesity, hyperlipidemia, and hypertension; and one additionally including apolipoprotein E (APOE) ε4 carrier status. Cerebrospinal fluid was analyzed for amyloid β (Aβ), total tau, and phosphorylated tau. Visual assessments of medial temporal lobe atrophy (MTA), global cortical atrophy-frontal subscale, and Fazekas scale for white matter changes (WMC) were performed. Higher CAIDE Dementia Risk Score (version without APOE) was significantly associated with higher total tau, more severe MTA, WMC, and global cortical atrophy-frontal subscale. Higher CAIDE Dementia Risk Score (version with APOE) was associated with reduced Aβ, more severe MTA, and WMC. CAIDE Dementia Risk Score version with APOE seemed to predict dementia better in this memory clinic population with short follow-up than the version without APOE.
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