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Dementia risk factors

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https://www.readbyqxmd.com/read/28643811/-from-mild-cognitive-impairment-to-dementia-what-is-the-role-of-public-health
#1
Nicola Vanacore, Alessandra Di Pucchio, Eleonora Lacorte, Ilaria Bacigalupo, Flavia Mayer, Giulia Grande, Matteo Cesari, Marco Canevelli
Mild cognitive impairment (MCI) is a nosological entity proposed by Petersen in 1999 with the objective of identifying an early stage of dementia. The new diagnostic criteria for dementia, both those promoted by the International Working Group (IWG) and those defined by the National Institute of Aging (NIA), subsequently introduced a new model that starts with a preclinical phase, then proceeds with a prodromal phase, and ends with a phase of dementia. The condition known as subjective cognitive disorder (SCD) is included between the preclinic and the prodromal phases...
May 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28641077/inhibition-of-early-growth-response-1-in-the-hippocampus-alleviates-neuropathology-and-improves-cognition-in-an-alzheimer-model-with-plaques-and-tangles
#2
Xike Qin, Yunling Wang, Hemant K Paudel
A sporadic form of Alzheimer disease (AD) and vascular dementia share many risk factors, and their pathogenic mechanisms are suggested to be related. Transcription factor early growth response 1 (Egr-1) regulates various vascular pathologies and is up-regulated in both AD brains and AD mouse models; however, its role in AD pathogenesis is unclear. Herein, we report that silencing of Egr-1 in the hippocampus by shRNA reduces tau phosphorylation, amyloid-β (Aβ) pathology, and improves cognition in the 3xTg-AD mouse model...
June 19, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28638820/dementia-literacy-among-community-dwelling-older-adults-in-urban-china-a-cross-sectional-study
#3
Haifeng Zhang, Samantha M Loi, Shu'aijun Zhou, Mei Zhao, Xiaozhen Lv, Jing Wang, Xiao Wang, Nicola Lautenschlager, Xin Yu, Huali Wang
OBJECTIVE: Delay in seeking diagnosis of dementia is common in China. Misinformation and poor knowledge about dementia may contribute to it. The study was designed to explore the nationwide dementia literacy among older adults in urban China and to investigate the factors associated with overall dementia literacy. METHODS: In a cross-sectional study, a convenience sample of 3,439 community-dwelling old adults aged 60 and over was recruited from 34 cities in 20 provinces between June 20 and August 20, 2014...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28634550/sortilin-related-receptor-expression-in-human-neural-stem-cells-derived-from-alzheimer-s-disease-patients-carrying-the-apoe-epsilon-4-allele
#4
Alen Zollo, Zoe Allen, Helle F Rasmussen, Filomena Iannuzzi, Yichen Shi, Agnete Larsen, Thorsten J Maier, Carmela Matrone
Alzheimer's disease (AD) is the most common form of dementia in the elderly; important risk factors are old age and inheritance of the apolipoprotein E4 (APOE4) allele. Changes in amyloid precursor protein (APP) binding, trafficking, and sorting may be important AD causative factors. Secretase-mediated APP cleavage produces neurotoxic amyloid-beta (Aβ) peptides, which form lethal deposits in the brain. In vivo and in vitro studies have implicated sortilin-related receptor (SORL1) as an important factor in APP trafficking and processing...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28632203/combined-assessment-of-dyrk1a-bdnf-and-homocysteine-levels-as-diagnostic-marker-for-alzheimer-s-disease
#5
N Janel, P Alexopoulos, A Badel, F Lamari, A C Camproux, J Lagarde, S Simon, C Feraudet-Tarisse, P Lamourette, M Arbones, J L Paul, B Dubois, M C Potier, M Sarazin, J M Delabar
Early identification of Alzheimer's disease (AD) risk factors would aid development of interventions to delay the onset of dementia, but current biomarkers are invasive and/or costly to assess. Validated plasma biomarkers would circumvent these challenges. We previously identified the kinase DYRK1A in plasma. To validate DYRK1A as a biomarker for AD diagnosis, we assessed the levels of DYRK1A and the related markers brain-derived neurotrophic factor (BDNF) and homocysteine in two unrelated AD patient cohorts with age-matched controls...
June 20, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28631875/nursing-assessment-as-an-effective-tool-for-the-identification-of-delirium-risk-in-older-in-patients-a-case-control-study
#6
Elena Solà-Miravete, Carlos López, Estrella Martínez-Segura, Mireia Adell-Lleixà, Maria Eulàlia Juvé-Udina, Mar Lleixà-Fortuño
AIMS: To evaluate the usefulness of comprehensive nursing assessment as a strategy for determining the risk of delirium in older in-patients from a model of care needs based on variables easily measured by nurses. BACKGROUND: There are many scales of assessment and prediction of risk of delirium, but they are little known and infrequently used by professionals. Recognition of delirium by doctors and nurses continues to be limited. DESIGN AND METHODS: A case-control study...
June 20, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28628597/integrating-health-promotion-into-physical-therapy-practice-to-improve-brain-health-and-prevent-alzheimer-disease
#7
Ellen McGough, Neva Kirk-Sanchez, Teresa Liu-Ambrose
BACKGROUND AND PURPOSE: Alzheimer disease is the most common cause of dementia, and brain pathology appears years before symptoms are evident. Primary prevention through health promotion can incorporate lifestyle improvement across the lifespan. Risk factor assessment and identifying markers of disease might also trigger preventive measures needed for high-risk individuals and groups. SUMMARY OF KEY POINTS: Many potential risk factors are modifiable through exercise, and may be responsive to early intervention strategies to reduce the downward slope toward disability...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28627380/post-traumatic-stress-disorder-and-risk-of-dementia-among-members-of-a-health-care-delivery-system
#8
Jason D Flatt, Paola Gilsanz, Charles P Quesenberry, Kathleen B Albers, Rachel A Whitmer
INTRODUCTION: Post-traumatic stress disorder (PTSD) is associated with an increased risk of dementia in male veterans, but little is known in females and civilians. METHODS: PTSD and comorbidities were abstracted from medical records from 1/1/1996 to 12/31/2001. Dementia incidence from 1/1/2002 to 12/31/2014 in 499,844 health care members aged 60+ years over an average of 8.2 years. Cox proportional hazard models were adjusted for age, demographics, and comorbidities...
June 13, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28627042/deciding-about-nursing-home-care-in-dementia-a-conjoint-analysis-of-how-older-people-balance-competing-goals
#9
Alison Fahey, Dearbhail Ní Chaoimh, Grainne R Mulkerrin, Eamon C Mulkerrin, Shaun T O'Keeffe
AIM: "Don't put me in a home" is a common preference of older people, but so too is "I don't want to be a burden on my family." These and other goals often conflict with each other when people have worsening dementia and the issue of possible nursing home admission arises. METHODS: Community-dwelling older hospital patients were asked to imagine that they lived alone, had dementia and were experiencing increasing practical difficulties, and were presented with 11 possible "outcome packages...
June 18, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28623948/one-carbon-metabolism-cognitive-impairment-and-csf-measures-of-alzheimer-pathology-homocysteine-and-beyond
#10
Loïc Dayon, Seu Ping Guiraud, John Corthésy, Laeticia Da Silva, Eugenia Migliavacca, Domilė Tautvydaitė, Aikaterini Oikonomidi, Barbara Moullet, Hugues Henry, Sylviane Métairon, Julien Marquis, Patrick Descombes, Sebastiano Collino, François-Pierre J Martin, Ivan Montoliu, Martin Kussmann, Jérôme Wojcik, Gene L Bowman, Julius Popp
BACKGROUND: Hyperhomocysteinemia is a risk factor for cognitive decline and dementia, including Alzheimer disease (AD). Homocysteine (Hcy) is a sulfur-containing amino acid and metabolite of the methionine pathway. The interrelated methionine, purine, and thymidylate cycles constitute the one-carbon metabolism that plays a critical role in the synthesis of DNA, neurotransmitters, phospholipids, and myelin. In this study, we tested the hypothesis that one-carbon metabolites beyond Hcy are relevant to cognitive function and cerebrospinal fluid (CSF) measures of AD pathology in older adults...
June 17, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28623677/incidence-of-cognitively-defined-late-onset-alzheimer-s-dementia-subgroups-from-a-prospective-cohort-study
#11
Paul K Crane, Emily Trittschuh, Shubhabrata Mukherjee, Andrew J Saykin, R Elizabeth Sanders, Eric B Larson, Susan M McCurry, Wayne McCormick, James D Bowen, Thomas Grabowski, Mackenzie Moore, Julianna Bauman, Alden L Gross, C Dirk Keene, Thomas E Bird, Laura E Gibbons, Jesse Mez
INTRODUCTION: There may be biologically relevant heterogeneity within typical late-onset Alzheimer's dementia. METHODS: We analyzed cognitive data from people with incident late-onset Alzheimer's dementia from a prospective cohort study. We determined individual averages across memory, visuospatial functioning, language, and executive functioning. We identified domains with substantial impairments relative to that average. We compared demographic, neuropathology, and genetic findings across groups defined by relative impairments...
June 14, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28621053/factors-affecting-aging-cognitive-function-among-community-dwelling-older-adults
#12
Chun-Ja Kim, JeeWon Park, Se-Won Kang, Elizabeth A Schlenk
AIM: The study purpose was to determine factors affecting aging cognitive function of 3,645 community-dwelling older adults in Korea. METHODS: The Hasegawa Dementia Scale assessed aging cognitive function, blood analyses and anthropometrics assessed cardio-metabolic risk factors, and the Geriatric Depression Scale Short Form Korean Version assessed depressive symptoms. RESULTS: Participants with poor aging cognitive function were more likely to be in the late age group (≥75 y) and currently smoking and have a medical history of stroke, high body mass index, and high level of depressive symptoms; they were also less likely to engage in regular meals and physical activities...
June 16, 2017: International Journal of Nursing Practice
https://www.readbyqxmd.com/read/28620833/assessment-of-serum-uric-acid-as-risk-factor-for-tauopathies
#13
Tommaso Schirinzi, Giulia Di Lazzaro, Vito Luigi Colona, Paola Imbriani, Mohammad Alwardat, Giulia Maria Sancesario, Alessandro Martorana, Antonio Pisani
Low levels of serum uric acid (UA) are a risk factor for many neurodegenerative diseases but the role of UA in tauopathies has not been yet fully evaluated. In this study, we assessed the risk associated with serum UA levels in a large group of patients with tauopathies, either primary or secondary. The mean serum UA concentrations of 111 patients with tauopathies (TAU), including 41 with progressive supranuclear palsy (PSP), 45 with Alzheimer's disease (AD) and 25 with frontotemporal dementia (FTD) were compared to that of 130 controls (CTL)...
June 15, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28619768/liquorice-induced-hypokalaemia-in-patients-treated-with-yokukansan-preparations-identification-of-the-risk-factors-in-a-retrospective-cohort-study
#14
Saori Shimada, Tetsuaki Arai, Akira Tamaoka, Masato Homma
OBJECTIVE: To evaluate serum potassium levels and rates of hypokalaemia in patients treated with liquorice-containing Japanese traditional Kampo-medicines Yokukansan (YK) and Yokukansan-ka-chinpihange (YKCH). DESIGN: Retrospective cohort study. SETTING: Patients receiving YK preparations for dementia and other psychiatric disorders in the University of Tsukuba Hospital in Japan. PARTICIPANTS: 389 patients (male/female: 174/215, 68...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28617802/oxidative-stress-affects-processing-of-amyloid-precursor-protein-in-vascular-endothelial-cells
#15
Abebe Muche, Thomas Arendt, Reinhard Schliebs
BACKGROUND: Oxidative stress is thought to be a key player in the pathogenesis of neurodegenerative dementia, including Alzheimer's disease (AD). It has been assumed that oxidative stress contributes to the ß-amyloid deposition in cerebral blood vessels. METHODS: In order to prove this hypothesis, we examined the effect of oxidative stress on the processing of amyloid precursor protein (APP) in primary endothelial cells (EC) derived from cerebral cortical tissue of transgenic Tg2576 mice...
2017: PloS One
https://www.readbyqxmd.com/read/28617071/an-endothelial-link-between-the-benefits-of-physical-exercise-in-dementia
#16
Lianne J Trigiani, Edith Hamel
The current absence of a disease-modifying treatment for Alzheimer's disease (AD) and vascular cognitive impairment and dementia (VCID) highlights the necessity for investigating the benefits of non-pharmacological approaches such as physical exercise (PE). Although evidence exists to support an association between regular PE and higher scores on cognitive function tests, and a slower rate of cognitive decline, there is no clear consensus on the underlying molecular mechanisms of the advantages of PE. This review seeks to summarize the positive effects of PE in human and animal studies while highlighting the vascular link between these benefits...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28615661/increased-levels-of-ascorbic-acid-in-the-cerebrospinal-fluid-of-cognitively-intact-elderly-patients-with-major-depression-a-preliminary-study
#17
Kenji Hashimoto, Tamaki Ishima, Yasunori Sato, Davide Bruno, Jay Nierenberg, Charles R Marmar, Henrik Zetterberg, Kaj Blennow, Nunzio Pomara
Major depressive disorder (MDD) in the elderly is a risk factor for dementia, but the precise biological basis remains unknown, hampering the search for novel biomarkers and treatments. In this study, we performed metabolomics analysis of cerebrospinal fluid (CSF) from cognitively intact elderly patients (N = 28) with MDD and age- and gender-matched healthy controls (N = 18). The CSF levels of 177 substances were measured, while 288 substances were below the detection limit. Only ascorbic acid was significantly different, with higher levels in the MDD group at baseline...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28611659/vitamin-d-homocysteine-and-folate-in-subcortical-vascular-dementia-and-alzheimer-dementia
#18
Rita Moretti, Paola Caruso, Matteo Dal Ben, Corrado Conti, Silvia Gazzin, Claudio Tiribelli
Dementia is a worldwide health problem which affects millions of patients; Alzheimer's disease (AD) and subcortical vascular dementia (sVAD) are the two most frequent forms of its presentation. As no definite therapeutic options have been discovered, different risk factors for cognitive impairment have been searched for potential therapies. This report focuses on the possible evidence that vitamin D deficiency and hyper-homocysteinemia can be considered as two important factors for the development or the progression of neurodegenerative or vascular pathologies...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28609829/body-mass-index-and-risk-of-alzheimer-disease-a-mendelian-randomization-study-of-399-536-individuals
#19
Liv Tybjærg Nordestgaard, Anne Tybjærg-Hansen, Børge G. Nordestgaard, Ruth Frikke-Schmidt
Context: Recently, data on two million people established that low body mass index (BMI) is associated with increased risk of dementia. Whether this observational association reflects a causal effect remains to be clarified. Objective: We tested the hypothesis that there is a causal association between low BMI and high risk of Alzheimer disease. Design, Setting and Participants: Using a Mendelian randomization approach, we studied 95,578 individuals from the Copenhagen General Population Study (CGPS) with up to 36 years of follow-up, and consortia data on 303,958 individuals from the Genetic Investigation of Anthropometric Traits (GIANT) and the International Genomics of Alzheimer's Project (IGAP)...
May 9, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28606710/leisure-time-physical-activity-and-risk-of-disability-incidence-a-12-year-prospective-cohort-study-among-young-elderly-of-the-same-age-at-baseline
#20
Takashi Matsunaga, Mariko Naito, Kenji Wakai, Shigekazu Ukawa, Wenjing Zhao, Satoe Okabayashi, Masahiko Ando, Takashi Kawamura, Akiko Tamakoshi
BACKGROUND: To clarify the role of physical activity in preventing disability in Japan, we investigated the association between amount of leisure-time physical activity and incidence of disability among the young elderly. METHODS: In the New Integrated Suburban Seniority Investigation (NISSIN) project conducted from 1996 to 2013, we followed 2888 community-dwelling adults aged 64-65 years with no history of cerebrovascular disease for a median follow-up of 11.6 years...
June 9, 2017: Journal of Epidemiology
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