Memory and thinking in later life, and their decline.
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776 to 800 of 1,152Are loneliness and social isolation associated with cognitive decline?
Objective: This study aimed to examine the association of loneliness and social isolation on cognition over a 3-year follow-up period in middle- and older-aged adults.
Methods: Data from a Spanish nationally representative sample were analyzed (n = 1691; aged 50 years or older). Loneliness, social isolation, and cognition (immediate recall, delayed recall, verbal fluency, forward digit span, backward digit span, and a composite cognitive score) were assessed both at baseline and at follow-up. Adjusted generalized estimating equations models were performed.
Results: Loneliness was significantly associated with lower scores in the composite cognitive score, immediate and delayed recall, verbal fluency, and backward digit span (B = -0.14 to B = -3.16; P < .05) and with a more rapid decline from baseline to follow-up in two out of six cognitive tests. Higher social isolation was associated w…
matched on Cognitive Dysfunction (mesh), cognitive decline (text)
Systemic inflammation during midlife and cognitive change over 20 years: The ARIC Study.
Objective: To examine the association between systemic inflammation measured during midlife and 20-year cognitive decline.
Methods: Within the Atherosclerosis Risk in Communities cohort study, inflammatory biomarkers were measured during middle adulthood. We created an inflammation composite score using 4 blood biomarkers measured at visit 1 (fibrinogen, white blood cell count, von Willebrand factor, and factor VIII); we measured C-reactive protein (CRP) at visit 2. Cognition was assessed over 3 visits spanning 20 years using measures of memory, executive function, and language.
Results: A total of 12,336 participants (baseline age 56.8 [5.7], 21% black, 56% women) were included. After adjusting for demographic variables, vascular risk factors, and comorbidities, each standard deviation (SD) increase in midlife inflammation composite score was associated with an additional 20-year declin…
matched on Cognitive Dysfunction (mesh), cognitive decline (text)
Mediterranean Diet and Health Outcomes in the SUN Cohort.
The Mediterranean Dietary (MedDiet) Pattern has been linked to many beneficial health effects. This review summarizes the main findings of a prospective cohort study, the Seguimiento Universidad de Navarra (SUN) cohort, specifically focused on MedDiet and the risk of major chronic disease. It is an open cohort in which 22,786 Spanish university graduates have participated since 1999 until February 2018. Data on diet, lifestyle and clinical diagnosis are collected at baseline and every two years. After reviewing 21 publications from the SUN cohort on the effects of the MedDiet, we conclude that this cohort has provided good evidence that a high MedDiet adherence is associated with a reduced incidence of all-cause mortality, fatal and non-fatal major cardiovascular disease (CVD), type 2 diabetes, weight gain, metabolic syndrome, depression, cognitive decline, and nephrolithiasis. An invers…
matched on Cognitive Dysfunction (mesh), cognitive decline (text)
Caring for an individual with mild cognitive impairment: a qualitative perspective of health-related quality of life from caregivers.
Objectives: Little is known regarding the effect that caring for an individual with Mild Cognitive Impairment (MCI) has on health-related quality of life (HRQOL). We sought to identify the most important aspects of HRQOL related to caring for an individual with MCI.
Methods: Six focus groups were conducted with caregivers of individuals with MCI (n = 32). Qualitative frequency analysis was used to analyze the data.
Results: Findings indicated that caregivers most frequently discussed social health, including changes in social roles and an increased need for social support (51.2% of the total discussion). This was followed by mental health concerns (37.9%) centering on anger/frustration, and a need for patience in the caregiving role, as well as caregiver-specific anxiety. Other topics included physical health (10.0%; including the impact that stress and burden have on medical heath), and…
matched on Cognitive Dysfunction (mesh), mild cognitive impairment (text)
Prolonged Grief and Cognitive Decline: A Prospective Population-Based Study in Middle-Aged and Older Persons.
Objective: Bereavement can result in unresolved and prolonged grief, often termed prolonged grief disorder (PGD). The impact of PGD on cognitive functioning is poorly understood. The aim of the study was to compare the cognitive decline, assessed by repeated measures of different cognition domains, between persons with normal and PGD and a non-grieving reference population in a 7-year follow-up study.
Methods: The study sample comprised 3126 non-demented persons, mean age: 64 years, of the Rotterdam Study. Participants were classified into three groups: no grief (reference group, N = 2,582), normal grief (N = 418), and prolonged grief disorder (N = 126). Participants were assessed with the Complicated Grief Inventory and underwent cognitive testing (Mini-Mental State Examination [MMSE], Letter-Digit Substitution test, Stroop test, Word fluency task, Word learning test). Analyses were adj…
matched on Cognitive Dysfunction (mesh), cognitive decline (text)
Cognitive function trajectories and their determinants in older people: 8 years of follow-up in the English Longitudinal Study of Ageing.
Background: Maintaining cognitive function is an important aspect of healthy ageing. In this study, we examined age trajectories of cognitive decline in a large nationally representative sample of older people in England. We explored the factors that influence such decline and whether these differed by gender.
Methods: Latent growth curve modelling was used to explore age-specific changes, and influences on them, in an 8-year period in memory, executive function, processing speed and global cognitive function among 10 626 participants in the English Longitudinal Study of Ageing. We run gender-specific models with the following exposures: age, education, wealth, childhood socioeconomic status, cardiovascular disease, diabetes, physical function, body mass index, physical activity, alcohol, smoking, depression and dementia.
Results: After adjustment, women had significantly less decline th…
matched on Cognitive Dysfunction (mesh), cognitive decline (text)
Loneliness, depression and cognitive function in older U.S. adults.
Objective: To examine reciprocal relations of loneliness and cognitive function in older adults.
Methods: Data were analyzed from 8382 men and women, age 65 and older, participating in the US Health and Retirement Study from 1998 to 2010. Participants underwent biennial assessments of loneliness and depression (classified as no, low or high depression) determined by the Center for Epidemiologic Studies Depression scale (8-item version), cognition (a derived memory score based on a word list memory task and proxy-rated memory and global cognitive function), health status and social and demographic characteristics from 1998 to 2010. We used repeated measures analysis to examine the reciprocal relations of loneliness and cognitive function in separate models controlling sequentially and cumulatively for socio-demographic factors, social network, health conditions and depression.
Results: Lo…
matched on Cognitive Dysfunction (mesh), cognitive decline (text)
Caregiver burden in mild cognitive impairment.
Objectives: We aimed to compare the rates of burden amongst caregivers of participants with mild cognitive impairment (MCI), compared to a control group. We also aimed to identify factors in both the caregiver and patient that are associated with significant levels of burden.
Method: This was a cross-sectional study. Sixty-four participants with MCI, 36 control-participants and their respective caregivers/informants were recruited to a university research clinic. The proportion of those who showed clinically significant levels of burden was determined by a Zarit Burden Interview score of >21. The associations of burden in MCI-caregivers were calculated in the following categories; participant characteristics (including depressive symptoms, cognition and informant ratings of cognitive and behavioural change); caregiver characteristics; and the caregiving context. Multivariate analyses wer…
matched on Cognitive Dysfunction (mesh), mild cognitive impairment (text)
Physical exercise in MCI elderly promotes reduction of pro-inflammatory cytokines and improvements on cognition and BDNF peripheral levels.
The benefits of physical exercise to reduce low-grade inflammation and improve Brain-Derived Neurotrophic Factor (BDNF) levels and cognitive function became a growing field of interest. Low-grade inflammation is common during aging and seems to be linked to neurodegenerative process. Regular physical exercises can help to reduce pro-inflammatory cytokines levels and to improve BDNF peripheral concentrations. The main goal of this research was to analyze the effects of a 16-week multimodal physical exercise program on peripheral BDNF levels and on Tumor Necrosis-α (TNF-α) and Interleukin- 6 (IL-6) as pro-inflammatory markers in cognitive healthy elderly individuals and in elderly with mild cognitive impairment (MCI). Cognitive functions were assessed by the Montreal Cognitive Assessment (MoCA) prior to and after the intervention. Thirty cognitively healthy participants and thirty-seven MC…
matched on Cognitive Dysfunction (mesh), mild cognitive impairment (text)
Shimada H, Makizako H, Doi T, Yoshida D, Tsutsumimoto K, Anan Y, Uemura K, Ito T, Lee S, Park H, Suzuki T (2013)MEDLINE-indexed journal, not yet read by usJournal of the American Medical Directors Association342 citations Combined prevalence of frailty and mild cognitive impairment in a population of elderly Japanese people.
Objective: Preventive strategies for frailty and mild cognitive impairment (MCI) are important for avoiding future functional decline and dementia in older adults. The purpose of this study was to use a population-based survey to ascertain the single and combined prevalence of frailty and MCI and to identify the relationships between frailty and MCI in older Japanese adults.
Design: Cross-sectional study.
Setting: General community.
Participants: A total of 5104 older adults (aged 65 years or older, mean age 71 years) who were enrolled in the Obu Study of Health Promotion for the Elderly (OSHPE).
Measurements: Each participant underwent detailed physical and cognitive testing to assess frailty and MCI. We considered the frailty phenotype to be characterized by limitations in 3 or more of the following 5 domains: mobility, strength, endurance, physical activity, and nutrition. Screening f…
matched on Cognitive Dysfunction (mesh), mild cognitive impairment (text)
Why don't older adults with subjective memory complaints seek help?
Background: Subjective memory complaints (SMCs) are common among older adults, often causing significant distress and showing strong relationships to future cognitive decline. However, low rates of help-seeking for memory complaints are well documented. Little is known about the reasons behind the decision to seek or not to seek help with memory problems. The common-sense model of illness perception proposes that the beliefs people hold about their health underlie help-seeking behaviour. The present study investigated factors underlying the decision to seek help in people with SMCs within the framework of the common-sense model of illness perception.
Methods: Cognition, illness perceptions, coping styles, depression and anxiety were assessed in 98 adults with SMCs, aged 50 years and above, including 60 attending a memory clinic and 38 non-help-seekers.
Results: Objective cognitive perfor…
matched on Memory Disorders (mesh), cognitive decline (text)
Samieri C, Maillard P, Crivello F, Proust-Lima C, Peuchant E, Helmer C, Amieva H, Allard M, Dartigues JF, Cunnane SC, Mazoyer BM, Barberger-Gateau P (2012)MEDLINE-indexed journal, not yet read by usNeurology75 citations Plasma long-chain omega-3 fatty acids and atrophy of the medial temporal lobe.
Objective: The long-chain ω-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are potential candidates for interventions to delay Alzheimer disease (AD), but evidence from clinical studies is mixed. We aimed at determining whether plasma levels of EPA or DHA predict atrophy of medial temporal lobe (MTL) gray matter regions in older subjects.
Methods: A total of 281 community dwellers from the Three-City Study, aged 65 years or older, had plasma fatty acid measurements at baseline and underwent MRI examinations at baseline and at 4 years. We studied the association between plasma EPA and DHA and MTL gray matter volume change at 4 years.
Results: Higher plasma EPA, but not DHA, was associated with lower gray matter atrophy of the right hippocampal/parahippocampal area and of the right amygdala (p < 0.05, familywise error corrected). Based on a mean right amygdala vol…
matched on Memory Disorders (mesh), cognitive decline (text)
The Relationship Between Sleep, Cognition, and Dementia Risk in People With Focal Epilepsy.
Background and objectives: Sleep disruption and cognitive impairment are important comorbidities of focal epilepsy. However, the nature to which sleep affects cognition and long-term dementia risk in focal epilepsy, compared with other brain conditions, remains unclear. We examined the relationship between sleep, cognition, and dementia risk in patients with focal epilepsy compared with healthy controls and stroke patients.
Methods: We conducted an analysis of the prospective UK Biobank cohort study, with baseline assessments performed between 2006 and 2010 and follow-up until 2021. Study groups were mutually exclusive participants with focal epilepsy and stroke at baseline assessment and healthy controls. Sleep characteristics included reports of sleep duration, obstructive sleep apnea, insomnia, napping, and dozing. Main outcomes were risk of incident all-cause dementia and Alzheimer d…
matched on Dementia (mesh)
Understanding the impact of dementia on spousal relationships: A qualitative study with female spousal carers of people living with dementia.
Background: Dementia does not merely affect individuals, the carer and the person living with dementia, but also has a profound impact on their spousal relationship. As such, this study aimed to gain a deeper understanding of how dementia affects spousal relationships with a focus on interpersonal (i.e. relationship adjustment, communication engagement and emotional connection between two individuals) and intrapersonal (i.e. loss of self within the context of relationships) dynamics using a qualitative approach. The study also explored how carers adapt to such relationship challenges in the context of dementia care. Methods: A phenomenological approach was used to capture the subjective experiences of female spousal carers, who regularly support their partner living with dementia. A total of nine semi-structured interviews were conducted. Results: Relationship adjustment theme highlighte…
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Cognitive Stimulation Therapy-Spain (CST-ES): Cultural Adaptation Process and Pilot Study.
Objectives: To assess the validity and acceptability of an adapted version of Cognitive Stimulation Therapy (CST) for the Spanish population and culturally adapt the original UK manuals.
Methods: The process followed the Formative Method for Adapting Psychotherapy (FMAP). Two focus groups were conducted with healthcare professionals specialized in the care of people with dementia, a pilot study with a small sample size (n = 6), and individual interviews with participants, family caregivers, and group facilitators. The study was conducted at the National Reference Center for Alzheimer's and Dementia Care (CREA), a specialized dementia care center in Spain. The participants included eight healthcare professionals for the focus groups, six persons with dementia from CREA outpatient programs for the pilot study, their family caregivers, and two group facilitators. Assessments for the pilot s…
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Voluntary wheel running exercise improves sleep disorder, circadian rhythm disturbance, and neuropathology in an animal model of Alzheimer's disease.
Introduction: The sleep-wake cycle and circadian rhythm disturbances are common in Alzheimer's disease (AD). However, it is not known if exercise has any benefit for the sleep disorders in AD.
Methods: We conducted a 2-month voluntary wheel running (VWR) exercise (Ex) in an animal model of AD (APPSWE/PS1dE9 mice). We assessed behavioral circadian rhythm, sleep structure, circadian clock genes, cognitive function, and neurodegeneration in the suprachiasmatic nucleus (SCN), the hippocampus, and the cortex.
Results: After VWR exercise in the AD mice, the rapid eye movement sleep was increased by 89%. The levels of circadian clock genes were significantly changed (brain and muscle arnt-like protein 1 [BMAL1] and retinoic acid receptor-related orphan receptorsα [RORα] reduced by 45.7% and 36.4%, reverse erythroblastosis virusα (REV-ERBα) increased by 119%) in the SCN by immunofluorescence sta…
matched on Alzheimer Disease (mesh)
The Impact of Engagement with the PARO Therapeutic Robot on the Psychological Benefits of Older Adults with Dementia.
Objectives: This study aimed to examine the effect of 8-weeks of a 60-minute PARO intervention to reduce depressive symptoms and loneliness in older adults with dementia and investigated changes in their emotional or behavioral expressions and level of engagement with the PARO robot.
Methods: This was a quasi-experimental study with a repeated measures design. The outcome measures were evaluated at four time-points: before the intervention, week 4, immediately after the intervention, and one month after the PARO intervention.
Results: Fifty-two participants were recruited. The age of the participants ranged from 65 to 96 years, with a mean age of 81.81 years (SD = 8.54) in the PARO group and 79.08 years (SD = 7.71) in the control group. Using a mixed between-within subjects' analysis of variance, the results showed that there were significant interaction effects between the groups and ti…
matched on Dementia (mesh)
"I Lay Awake at Night": Latino Family Caregivers' Experiences Covering Out-of-Pocket Costs When Caring for Someone Living With Dementia.
Background and objectives: The financial burden of caregiving has received less research attention than physical and emotional costs. This is especially true for underserved ethnic minorities. Financial strain affects mental and physical health and is unequally distributed across caregivers of different races and ethnicities. Although caregivers overall spend, on average, one quarter of their income on caregiving, Latino caregivers, the focus of this study, spend nearly half.
Research design and methods: To better understand this disparity, we conducted 11 qualitative interviews with 14 Latino caregivers of persons living with dementia located in either California or Texas. Interview transcripts were thematically coded, guided by a material-psychosocial-behavioral conceptual model of financial strain.
Results: We identified 3 themes: daily needs and costs, psychological distress caused b…
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Irving-Pease EK, Refoyo-Martínez A, Barrie W, Ingason A, Pearson A, Fischer A, Sjögren KG, Halgren AS, Macleod R, Demeter F, Henriksen RA, Vimala T, McColl H, Vaughn AH, Speidel L, Stern AJ, Scorrano G, Ramsøe A, Schork AJ, Rosengren A, Zhao L, Kristiansen K, Iversen AKN, Fugger L, Sudmant PH, Lawson DJ, Durbin R, Korneliussen T, Werge T, Allentoft ME, Sikora M, Nielsen R, Racimo F, Willerslev E (2024)MEDLINE-indexed journal, not yet read by usNature84 citations The selection landscape and genetic legacy of ancient Eurasians.
The Holocene (beginning around 12,000 years ago) encompassed some of the most significant changes in human evolution, with far-reaching consequences for the dietary, physical and mental health of present-day populations. Using a dataset of more than 1,600 imputed ancient genomes1, we modelled the selection landscape during the transition from hunting and gathering, to farming and pastoralism across West Eurasia. We identify key selection signals related to metabolism, including that selection at the FADS cluster began earlier than previously reported and that selection near the LCT locus predates the emergence of the lactase persistence allele by thousands of years. We also find strong selection in the HLA region, possibly due to increased exposure to pathogens during the Bronze Age. Using ancient individuals to infer local ancestry tracts in over 400,000 samples from the UK Biobank, we …
matched on Alzheimer Disease (mesh)
'Talking lines': the stories of diagnosis and support as told by those with lived experience of rare forms of dementia.
Background: People living with, or caring for someone with, rare forms of dementia can encounter issues while obtaining a diagnosis and trying to access appropriate support. This can affect their wellbeing, quality of life, social relationships and employment status. This study makes use of an arts-based narrative approach to explore individual accounts of these experiences whilst also exploring how, in telling their stories, those affected by rare forms of dementia might invoke, and situate their stories in relation to, broader cultural narratives around dementia and illness.
Methods: Semi-structured interviews were conducted via video-conferencing software with participants (N = 27), living with, or caring for someone with, a rare forms of dementia. Participants used line drawings to depict their journey from initial symptoms to the present day, followed by prompts to verbally narrate …
matched on Dementia (mesh)
Volunteer group participation and subsequent health and well-being among older adults in Japan: An outcome-wide longitudinal approach.
Background: Prior studies have underscored the importance of studying volunteering in the East Asian context. However, no study has conducted a holistic assessment of the relationship between volunteering and the multidimensional health and well-being outcomes of East Asian populations using a strong study design for causal inference. To address this gap, this study examined the associations between volunteer group participation and the subsequent health and well-being of Japanese older adults.
Methods: Three waves of data (2013, 2016, and 2019), obtained from the Japan Gerontological Evaluation Study-a nationwide cohort study of physically and cognitively independent older adults, aged ≥ 65 years, in Japan-were utilized. Exposure was evaluated as the frequency of volunteer group participation: ≥ 1/week, 1 - 3 times a month, a few times a year, and none (2016). As outcomes, 40 indicators…
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Extraction of sleep information from clinical notes of Alzheimer's disease patients using natural language processing.
Objectives: Alzheimer's disease (AD) is the most common form of dementia in the United States. Sleep is one of the lifestyle-related factors that has been shown critical for optimal cognitive function in old age. However, there is a lack of research studying the association between sleep and AD incidence. A major bottleneck for conducting such research is that the traditional way to acquire sleep information is time-consuming, inefficient, non-scalable, and limited to patients' subjective experience. We aim to automate the extraction of specific sleep-related patterns, such as snoring, napping, poor sleep quality, daytime sleepiness, night wakings, other sleep problems, and sleep duration, from clinical notes of AD patients. These sleep patterns are hypothesized to play a role in the incidence of AD, providing insight into the relationship between sleep and AD onset and progression.
Mate…
matched on Alzheimer Disease (mesh)
Social Isolation Changes and Long-Term Outcomes Among Older Adults.
Importance: While the association between cross-sectional measures of social isolation and adverse health outcomes is well established, less is known about the association between changes in social isolation and health outcomes.
Objective: To assess changes of social isolation and mortality, physical function, cognitive function, cardiovascular disease (CVD), and stroke.
Design, setting, and participants: In a cohort design, social isolation changes in 4 years and subsequent risk of mortality and other outcomes were assessed using the 13 649 eligible Health and Retirement Study (HRS) respondents from the 2006 to 2020 waves. Data were analyzed from October 11, 2023, to April 26, 2024.
Exposure: The main exposure was the change in social isolation measured by the Steptoe 5-item Social Isolation Index from the initial assessment to a second assessment conducted 4 years later. Participants w…
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Chinese formula Guben-Jiannao Ye alleviates the dysfunction of circadian and sleep rhythms in APP/PS1 mice implicated in activation of the PI3K/AKT/mTOR signaling pathway.
Ethnopharmacological relevance: The Chinese formula Guben-Jiannao Ye (GBJNY) formula has a long history of usage in traditional Chinese medicine (TCM) for the treatment of learning and memory disorders as well as senile insomnia. This formulation is derived from Sun Simiao's five tonic pills. Furthermore, modern pharmacological investigations have revealed its ability to improve cognitive impairment and ameliorate sleep-wake circadian rhythm disorders. However, the precise mechanism underlying its efficacy remains elusive.
Aim of the study: The current research explored the modulatory effects and possible mechanisms of GBJNY in circadian rhythm sleep-wake disorders and cognitive dysfunction in Alzheimer's disease using transcriptome sequencing and experimental validation.
Materials and methods: The LC-MS/MS tandem technology was utilized to qualitatively discern the active components pre…
matched on Alzheimer Disease (mesh)
Mortality and Function After Widowhood Among Older Adults With Dementia, Cancer, or Organ Failure.
Importance: The widowhood effect, in which mortality increases and function decreases in the period following spousal death, may be heightened in older adults with functional impairment and serious illnesses, such as cancer, dementia, or organ failure, who are highly reliant on others, particularly spouses, for support. Yet there are limited data on widowhood among people with these conditions.
Objective: To determine the association of widowhood with function and mortality among older adults with dementia, cancer, or organ failure.
Design, setting, and participants: This longitudinal cohort study used population-based, nationally representative data from the Health and Retirement Study database linked to Medicare claims from 2008 to 2018. Participants were married or partnered community-dwelling adults aged 65 years and older with and without cancer, organ failure, or dementia and funct…
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