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Sökning: WFRF:(Kern Silke)

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1.
  • Rydberg Sterner, Therese, et al. (författare)
  • The Gothenburg H70 Birth cohort study 2014-16: design, methods and study population.
  • 2019
  • Ingår i: European journal of epidemiology. - 1573-7284 .- 0393-2990. ; 34:2, s. 191-209
  • Tidskriftsartikel (refereegranskat)abstract
    • To improve health care for older persons, we need to learn more about ageing, e.g. identify protective factors and early markers for diseases. The Gothenburg H70 Birth Cohort Studies (the H70 studies) are multidisciplinary epidemiological studies examining representative birth cohorts of older populations in Gothenburg, Sweden. So far, six birth cohorts of 70-year-olds have been examined over time, and examinations have been virtually identical between studies. This paper describes the study procedures for the baseline examination of the Birth cohort 1944, conducted in 2014-16. In this study, all men and women born 1944 on specific dates, and registered as residents in Gothenburg, were eligible for participation (n = 1839). A total of 1203 (response rate 72.2%; 559 men and 644 women; mean age 70.5 years) agreed to participate in the study. The study comprised sampling of blood and cerebrospinal fluid, psychiatric, cognitive, and physical health examinations, examinations of genetics and family history, use of medications, social factors, functional ability and disability, physical fitness and activity, body composition, lung function, audiological and ophthalmological examinations, diet, brain imaging, as well as a close informant interview, and qualitative studies. As in previous examinations, data collection serves as a basis for future longitudinal follow-up examinations. The research gained from the H70 studies has clinical relevance in relation to prevention, early diagnosis, clinical course, experience of illness, understanding pathogenesis and prognosis. Results will increase our understanding of ageing and inform service development, which may lead to enhanced quality of care for older persons.
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  • Arvidsson Rådestig, Maya, et al. (författare)
  • Cognitive Performance and Cerebrospinal Fluid Markers in Preclinical Alzheimer's Disease: Results from the Gothenburg H70 Birth Cohort Studies.
  • 2021
  • Ingår i: Journal of Alzheimer's disease : JAD. - 1875-8908. ; 79:1, s. 225-235
  • Tidskriftsartikel (refereegranskat)abstract
    • We have previously shown that older adults with preclinical Alzheimer's disease (AD) pathology in cerebrospinal fluid (CSF) had slightly worse performance in Mini-Mental State Examination (MMSE) than participants without preclinical AD pathology.We therefore aimed to compare performance on neurocognitive tests in a population-based sample of 70-year-olds with and without CSF AD pathology.The sample was derived from the population-based Gothenburg H70 Birth Cohort Studies in Sweden. Participants (n = 316, 70 years old) underwent comprehensive cognitive examinations, and CSF Aβ-42, Aβ-40, T-tau, and P-tau concentrations were measured. Participants were classified according to the ATN system, and according to their Clinical Dementia Rating (CDR) score. Cognitive performance was examined in the CSF amyloid, tau, and neurodegeneration (ATN) categories.Among participants with CDR 0 (n = 259), those with amyloid (A+) and/or tau pathology (T+, N+) showed similar performance on most cognitive tests compared to participants with A-T-N-. Participants with A-T-N+ performed worse in memory (Supra span (p = 0.003), object Delayed (p = 0.042) and Immediate recall (p = 0.033)). Among participants with CDR 0.5 (n = 57), those with amyloid pathology (A+) scored worse in category fluency (p = 0.003).Cognitively normal participants with amyloid and/or tau pathology performed similarly to those without any biomarker evidence of preclinical AD in most cognitive domains, with the exception of slightly poorer memory performance in A-T-N+. Our study suggests that preclinical AD biomarkers are altered before cognitive decline.
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4.
  • Bjerke, Maria, 1977, et al. (författare)
  • Cerebrospinal Fluid Fatty Acid-Binding Protein 3 is Related to Dementia Development in a Population-Based Sample of Older Adult Women Followed for 8 Years.
  • 2016
  • Ingår i: Journal of Alzheimer's disease : JAD. - 1875-8908. ; 49:3, s. 733-741
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Increased fatty acid-binding protein 3 (FABP-3) levels have been reported in neurodegenerative diseases, including Alzheimer's disease (AD). Cerebrospinal fluid (CSF) FABP-3 has therefore been proposed as a putative marker for dementia. Population-based studies examining whether CSF FABP-3 predicts later development of dementia are lacking. OBJECTIVE: The aim of this study was to examine CSF levels of FABP-3 in relation to later development of dementia in elderly women and in relation to Aβ42, T-tau, P-tau181, and CSF: serum albumin ratio. METHODS: 86 non-demented women aged 70-84 years who participated in the Prospective Population Study of Women in Gothenburg, Sweden took part in a lumbar puncture in 1992-93. CSF-FABP-3, Aβ42, T-tau, P-tau181, and the CSF: serum albumin ratio were measured at baseline. Participants were examined with a neuropsychiatric exam at baseline and at follow-up in 2000. Dementia was diagnosed in accordance with DSM-III-R criteria. RESULTS: Between 1992 and 2000, 8 women developed dementia (4 AD, 3 vascular dementia, 1 mixed vascular dementia and AD). Higher levels of CSF-FABP-3 at baseline were related to development of dementia (OR 1.36 CI [1.05-1.76] p = 0.022) and the subtype AD (OR 1.38 CI [1.06-1.82), p = 0.019) during follow-up. FABP-3 correlated with CSF T-tau (r = 0.88, p <  0.001), P-tau181 (r = 0.619, p <  0.001), and CSF:serum albumin ratio (r = 0.233, p = 0.031), but not with Aβ42 (r = -0.08, p = 0.444)Conclusion: CSF FABP-3 may be an early marker for later development of dementia, probably related to neuronal degeneration, but independent of Aβ metabolism.
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  • Höglund, Kina, 1976, et al. (författare)
  • Preclinical amyloid pathology biomarker positivity: effects on tau pathology and neurodegeneration
  • 2017
  • Ingår i: Translational Psychiatry. - 2158-3188. ; 7
  • Tidskriftsartikel (refereegranskat)abstract
    • Brain autopsy and biomarker studies indicate that the pathology of Alzheimer's disease (AD) is initiated at least 10-20 years before clinical symptoms. This provides a window of opportunity to initiate preventive treatment. However, this emphasizes the necessity for biomarkers that identify individuals at risk for developing AD later in life. In this cross-sectional study, originating from three epidemiologic studies in Sweden (n = 1428), the objective was to examine whether amyloid pathology, as determined by low cerebrospinal fluid (CSF) concentration of the 42 amino acid form of beta-amyloid (A beta 42), is associated with biomarker evidence of other pathological changes in cognitively healthy elderly. A total of 129 patients were included and CSF levels of A beta 42, total tau, tau phosphorylated at threonine 181 (p-tau), neurogranin, VILIP-1, VEGF, FABP3, A beta 40, neurofilament light, MBP, orexin A, BDNF and YKL-40 were measured. Among these healthy elderly, 35.6% (N=46) had CSF A beta 42 levels below 530 pg ml(-1). These individuals displayed significantly higher CSF concentrations of t-tau (P < 0.001), p-tau (181) (P < 0.001), neurogranin (P = 0.009) and FABP3 (P = 0.044) compared with amyloid-negative individuals. Our study indicates that there is a subpopulation among healthy older individuals who have amyloid pathology along with signs of ongoing neuronal and synaptic degeneration, as well as tangle pathology. Previous studies have demonstrated that increase in CSF tau and p-tau is a specific sign of AD progression that occurs downstream of the deposition of A beta. On the basis of this, our data suggest that these subjects are at risk for developing AD. We also confirm the association between APOE epsilon 4 and amyloid pathology in healthy older individuals.
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7.
  • Johansson, Lena, 1972, et al. (författare)
  • Midlife Stress in Relation to Late-Life Cerebrospinal Fluid Biomarkers of Alzheimer's Disease: A 25-Year Follow-Up Study.
  • 2018
  • Ingår i: Dementia and geriatric cognitive disorders. - 1421-9824. ; 46:1-2, s. 90-99
  • Tidskriftsartikel (refereegranskat)abstract
    • Psychological stress has previously been associated with higher risk of developing late-life dementia, especially Alzheimer's disease (AD). This study tested whether longstanding midlife stress is related to cerebrospinal fluid (CSF) biomarkers of late-life AD, such as tau protein and amyloid beta (Aβ).The study included 79 nondemented females from the Prospective Population Study of Women in Gothenburg, Sweden, who responded to a standardized stress question at baseline (mean age 49 years) and underwent a lumbar puncture at follow-up 25 years later. Multiple linear regression models analyzed the relationships between midlife psychological stress and late-life CSF measures of total tau (t-tau), phosphorylated tau (p-tau), Aβ40, and Aβ42.Longstanding stress in midlife was associated with higher levels of CSF t-tau (β = 0.64, p = 0.01) and Aβ40 (β = 0.60, p = 0.02) in late life. No associations were found between midlife stress and levels of p-tau or Aβ42.The findings suggest that longstanding stress stimulates unspecific neurodegenerative processes, but not the core processes of AD, at least not in the early phase of the disease. The association with higher concentration of CSF t-tau may reflect neural degeneration and the association with higher Aβ40 may be an early sign of Aβ overproduction or cerebrovascular processes in the brain.
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  • Kern, Silke, et al. (författare)
  • Does low-dose acetylsalicylic acid prevent cognitive decline in women with high cardiovascular risk? A 5-year follow-up of a non-demented population-based cohort of Swedish elderly women.
  • 2012
  • Ingår i: BMJ Open. - 2044-6055. ; 2:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective The aim of this study was to examine whether low-dose acetylsalicylic acid (ASA) influences the rate of cognitive change in elderly women. Design Prospective, population-based cohort study. Setting The city of Gothenburg, Sweden, including those living in private households as well as in residential care. Participants The sample was derived from the Prospective Population Study of Women and from the H70 Birth Cohort Study in Gothenburg, Sweden. Both samples were obtained from the Swedish Population Register, based on birth date, and included 789 (response rate 71%) women aged 70–92 years. After the exclusion of individuals with dementia and users of warfarin, clopidogrel or heparin at baseline, 681 women were examined. Among all participants, 95.4% (N=601) had a high cardiovascular risk (CVD), defined as 10% or higher 10-year risk of any CVD event according to the Framingham heart study and 129 used low-dose ASA (75–160 mg daily) at baseline. After 5 years a follow-up was completed by 489 women. Primary outcome and secondary outcome measures Cognitive decline and dementia incidence in relation to the use of low-dose ASA and cardiovascular risk factors. Cognition was measured using the Mini Mental State Examination (MMSE), word fluency, naming ability and memory word tests. Dementia was diagnosed according to the DSM-III-R criterion. As secondary outcome incidence of stroke and peptic ulcer in relation to low-dose ASA use was studied. Results Women on regular low-dose ASA declined less on MMSE at follow-up than those not on ASA. This difference was even more pronounced in those who had ASA at both examinations (p=0.004 compared with never users; n=66 vs n=338). All other cognitive tests showed the same trends. There were no differences between the groups regarding short-term risk for dementia (N=41). Conclusion Low-dose ASA treatment may have a neuroprotective effect in elderly women at high cardiovascular risk.
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