| 1. |
- Robins Wahlin, Tarja-Brita, et al.
(författare)
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Episodic Learning and Memory in Prodromal Huntington’s Disease : The Role of Multimodal Encoding and Selective Reminding
- 2015
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Ingår i: International Journal of Clinical Medicine. - : Scientific Research Publishing, Inc.. - 2158-284X .- 2158-2882. ; 6:11, s. 876-886
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Tidskriftsartikel (refereegranskat)abstract
- This study investigated episodic memory in prodromal HD. Three groups were compared (N=70): mutation carriers with less than 12.5 years to disease onset (n=16), mutation carriers with 12.5 or more years to disease onset (n=16), and noncarriers (n=38). Episodic memory was assessed using the Fuld Object Memory Evaluation, which includes multimodal presentation and selective reminding, and the Claeson-Dahl Learning Test which includes verbal repeated presentation and recall trials. Both carrier groups demonstrated deficient episodic memory compared to noncarriers. The results suggest deficient episodic memory in prodromal HD, and that inconsistent retrieval contributes to these deficits. Multimodal presentation attenuates the deficits.
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| 2. |
- Robins Wahlin, Tarja-Brita, et al.
(författare)
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Non-verbal and verbal fluency in prodromal Huntington’s disease
- 2015
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Ingår i: Dementia and Geriatric Cognitive Disorders Extra. - : S. Karger AG. - 1664-5464. ; 5:3, s. 517-529
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Tidskriftsartikel (refereegranskat)abstract
- Background: This study examines nonverbal (design) and verbal (phonemic and semantic) fluency in prodromal Huntington’s disease (HD). An accumulating body of research indicates subtle deficits in cognitive functioning among prodromal mutation carriers for HD. Methods: Performance was compared between 32 mutation carriers and 38 noncarriers in order to examine the magnitude of impairment across fluency tasks. The Predicted Years To Onset (PYTO) in mutation carriers was calculated by a regression equation and used to divide the group according to whether onset was predicted less than 12.75 years (HD+CLOSE; n=16) or greater than 12.75 years (HD+DISTANT; n=16). Results: The results indicate that both nonverbal and verbal fluency are sensitive to subtle impairment in prodromal HD. HD+CLOSE group produced fewer items in all assessed fluency tasks compared to noncarriers. HD+DISTANT produced fewer drawings than noncarriers in the nonverbal task. PYTO correlated significantly with all measures of nonverbal and verbal fluency. Conclusion: The pattern of results indicates that subtle cognitive deficits exist in prodromal HD, and that less structured tasks with high executive demands are the most sensitive in detecting divergence from the normal range of functioning. These selective impairments can be attributed to the early involvement of frontostriatal circuitry and frontal lobes.
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| 3. |
- Broström, Anders, et al.
(författare)
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Sex-Specific Associations Between Self-reported Sleep Duration, Cardiovascular Disease, Hypertension, and Mortality in an Elderly Population
- 2018
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Ingår i: Journal of Cardiovascular Nursing. - : Lippincott Williams & Wilkins. - 0889-4655 .- 1550-5049. ; 33:5, s. 422-428
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Both short and long sleep durations have been associated to increased mortality. Knowledge about sex-specific differences among elderly regarding associations between sleep duration, cardiovascular health, and mortality is sparse.OBJECTIVE: The aims of this study are to examine the association between self-reported sleep duration and mortality and to investigate whether this association is sex specific and/or moderated by cardiovascular morbidity, and also to explore potential mediators of sleep duration effects on mortality.METHODS: A population-based, observational, cross-sectional design with 6-year follow-up with mortality as primary outcome was conducted. Self-rated sleep duration, clinical examinations, echocardiography, and blood samples (N-terminal fragment of proBNP) were collected. A total of 675 persons (50% women; mean age, 78 years) were divided into short sleepers (≤6 hours; n = 231), normal sleepers (7-8 hours; n = 338), and long sleepers (≥9 hours; n = 61). Data were subjected to principal component analyses. Cardiovascular disease (CVD) and hypertension factors were extracted and used as moderators and as mediators in the regression analyses.RESULTS: During follow-up, 55 short sleepers (24%), 68 normal sleepers (20%), and 21 long sleepers (34%) died. Mediator analyses showed that long sleep was associated with mortality in men (hazard ratio [HR], 1.8; P = .049), independently of CVD and hypertension. In men with short sleep, CVD acted as a moderator of the association with mortality (HR, 4.1; P = .025). However, when using N-terminal fragment of proBNP, this effect became nonsignificant (HR, 3.1; P = .06). In woman, a trend to moderation involving the hypertension factor and short sleep was found (HR, 4.6; P = .09).CONCLUSION: Short and long sleep duration may be seen as risk markers, particularly among older men with cardiovascular morbidity.
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| 4. |
- Broström, Anders, et al.
(författare)
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Sex-specific associations between self-reported sleep duration, depression, anxiety, fatigue and daytime sleepiness in an older community-dwelling population
- 2018
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Ingår i: Scandinavian Journal of Caring Sciences. - : John Wiley & Sons. - 0283-9318 .- 1471-6712. ; :1, s. 290-298
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: The purpose of this study was to explore whether associations between self-reported sleep duration, depressive symptoms, anxiety, fatigue and daytime sleepiness differed in older community-dwelling men and women. Design: Cross-sectional.Methods: A community-dwelling sample of 675 older men and women (mean age 77.7 years, SD 3.8 years) was used. All participants underwent a clinical examination by a cardiologist. Validated questionnaires were used to investigate sleep duration, depressive symptoms, anxiety, fatigue and daytime sleepiness. Subjects were divided into short sleepers (≤6 hours), n = 231; normal sleepers (7-8 hours), n = 338; and long sleepers (≥9 hours), n = 61. ancovas were used to explore sex-specific effects.Results: Depressive symptoms were associated with short sleep in men, but not in women. Fatigue was associated with both short and long sleep duration in men. No sex-specific associations of sleep duration with daytime sleepiness or anxiety were found.Conclusion: Nurses investigating sleep duration and its correlates, or effects, in clinical practice need to take sex into account, as some associations may be sex specific. Depressive symptoms and fatigue can be used as indicators to identify older men with sleep complaints.
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| 5. |
- Finkel, Deborah, et al.
(författare)
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Genetic and Environmental Influences on Longitudinal Trajectories of Functional Biological Age : Comparisons Across Gender
- 2017
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Ingår i: Behavior Genetics. - : Springer Science and Business Media LLC. - 0001-8244 .- 1573-3297. ; 47:4, s. 375-382
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Tidskriftsartikel (refereegranskat)abstract
- We used an alternate age variable, functional biological age (fBioAge), which was based on performance on functional body measures. The aim was to examine development of fBioAge across the adult life span, and to also examine potential gender differences and genetic and environmental influences on change with age. We used longitudinal data (n = 740; chronological age (ChronAge) range 45-85 at baseline) from the Swedish Adoption/Twin Study of Aging. The rate of increase in fBioAge was twice as fast after ChronAge 75 than before. fBioAge was higher in women than in men. fBioAge was fairly equally influenced by genetic and environmental factors. Whereas the rate of ChronAge cannot vary across time, gender, or individual, our analyses demonstrate that fBioAge does capture these within and between individual differences in aging, providing advantages for fBioAge in the study of aging effects.
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| 6. |
- Palmer, Katie, et al.
(författare)
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Prevalence of dementia and factors associated with dementia in rural Bangladesh : data from a cross-sectional, population-based study
- 2014
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Ingår i: International psychogeriatrics. - : International Psychogeriatric Association. - 1041-6102 .- 1741-203X. ; 26:11, s. 1905-1915
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Tidskriftsartikel (refereegranskat)abstract
- Background: There are currently no published reports of dementia prevalence or factors associated with dementia occurrence in Bangladesh. The aims are to report the prevalence of definite and questionable dementia in rural Bangladesh, and examine factors potentially associated with dementia occurrence, including sociodemographic, clinical, social, and nutritional factors. Methods: We used data from a population-based, cross-sectional study from Matlab, in rural Bangladesh, on 471 persons aged 60+ years. Participants underwent a clinical examination including diagnosis of somatic disorders, and a structured interview including questions about sociodemographic and social factors. Nutritional status was measured with the Mini Nutritional Assessment, and blood tests were conducted to assess a range of nutritional and clinical aspects. Age-and sex-specific dementia prevalence was calculated. Crude and adjusted logistic regression was used to examine associations between dementia and clinical, social, and nutritional factors. Dementia was diagnosed using a two-step procedure by physicians according to DSM-IV criteria. Results: The prevalence of questionable dementia was 11.5% and definite dementia was 3.6%. Dementia prevalence increased with increasing years of age (adjusted OR: 1.04; 95% CI = 1.002-1.1) and decreased with more years of education (adjusted OR: 0.8; 95% CI = 0.6-0.99). Being malnourished increased the odds of dementia almost six-fold (adjusted OR: 5.9; 95% CI = 1.3-26.3), while frequent participation in social activities was associated with a decreased odds (adjusted OR: 0.5; 95% CI = 0.2-0.9). Conclusions: The prevalence of dementia in rural Bangladesh is similar to other countries in the South Asia region, but lower than reports from other world regions. Malnutrition is strongly associated with dementia occurrence, and is a relevant area for future research within low-income countries.
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| 7. |
- Sternäng, Ola, et al.
(författare)
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Associations Between Functional Biological Age and Cognition Among Older Adults in Rural Bangladesh : Comparisons With Chronological Age
- 2019
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Ingår i: Journal of Aging and Health. - : SAGE Publications. - 0898-2643 .- 1552-6887. ; 31:5, s. 814-836
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: We constructed a functional biological age (fBioAge) indicator by using four functional variables: grip strength, forced expiratory lung volume, visual acuity, and hearing. Our aim was to compare how chronological age (ChronAge) and fBioAge are related to cognitive abilities in older adults. Method: We used data from the Poverty and Health in Aging project, Bangladesh. Participants (N = 400) were 60+ years of age and diagnosed as nondemented. Examined cognitive abilities were four episodic memory measures (including recall and recognition), two verbal fluency indicators, two semantic knowledge, and two processing speed tasks. Results: fBioAge accounted for cognitive variance beyond that explained by ChronAge also after controlling for medical diagnoses and blood markers. Discussion: Compared with ChronAge, fBioAge was a stronger predictor of cognition during a broad part of the old adult span. fBioAge seems, in that respect, to have the potential to become a useful age indicator in future aging studies.
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| 8. |
- Sundgren, Mathias, et al.
(författare)
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Event related potential and response time give evidence for a physiological reserve in cognitive functioning in relapsing-remitting multiple sclerosis
- 2015
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Ingår i: Journal of the Neurological Sciences. - : Elsevier BV. - 0022-510X .- 1878-5883. ; 356:1-2, s. 107-112
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Tidskriftsartikel (refereegranskat)abstract
- Cognitive dysfunction is common in multiple sclerosis (MS). Different factors may moderate the degree of cognitive deficit. The aim of the present study was to distinguish different mechanisms for cognitive reserve in relapsing–remitting MS (RRMS). The effects of clinical variables (physical disability, depression), premorbid intelligence (years of education, vocabulary knowledge), visual event-related potentialmeasures (P300) and response time(RT)were studied in RRMS patients (n=71) and healthy subjects (n=89). Patients with high P300 amplitude and short RT had better cognitive performance. This effect was significantly weaker in controls. High P300 and short RT may be physiological markers of a cognitive reserve in RRMS. In contrast, the association between cognitive scores and premorbid intelligence was similar in patients and in control subjects. The effects of physiological reserve and clinical variables were studied in a hierarchical linear regression model of cognitive performance in RRMS. P300 amplitude and RT explained a considerable amount of variance in global cognitive performance (34%, p b 0.001). The effects of P300 and RTwere notmoderated by premorbid intelligence. Physical disability and depression added significantly to explained variance, and the final model accounted for 44% (p b 0.001) of the variation. We conclude that physiological reserve is the strongest moderator of cognitive impairment in RRMS
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| 9. |
- Wahlin, Åke, 1956-, et al.
(författare)
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Prevalence of depressive symptoms and suicidal thoughts among elderly persons in rural Bangladesh
- 2015
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Ingår i: International psychogeriatrics. - 1041-6102 .- 1741-203X. ; 27:12, s. 1999-2008
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Tidskriftsartikel (refereegranskat)abstract
- Background: Depression, if broadly defined, is the commonest late-life mental disorder. We examined the distribution of depressive symptoms and suicidal thoughts, across age, sex, literacy, and marital status, among elderly individuals residing in rural Bangladesh and participating in a population-based study on health and aging.Methods: Prevalence figures of depressive symptoms were assessed with SRQ20 (n = 625), and possible social network and economic associations were examined. Morbidity accounts of depressive symptoms and suicidal thoughts were examined for a subsample that also underwent complete medical examination (n = 471).Results: We selected for analyses the items that corresponded to DSM-IV criteria and constructed a dichotomous variable. The prevalence was 45%, and most pronounced among the oldest women (70%). The overall prevalence of suicidal thoughts was 23%. Being a woman, illiterate or single were all risk factors for depressive symptoms and suicidal thoughts. These associations remained unaccounted for by the social network and economic variables. Co-residing with a child and having a high quality of contact were protective of both depressive symptoms and suicidal thoughts. The main findings were replicated in the subsample, where it was found that morbidities were also associated with the outcomes, independently of the four main predictors.Conclusions: Prevalence figures for depressive symptoms among elderly in rural Bangladesh are high. Demographic, social network, and morbidity factors are independently associated with both depressive symptoms and suicidal thoughts. This is the first study to report prevalence figures for depressive symptoms in this population.
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| 10. |
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