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https://www.readbyqxmd.com/read/28433549/influence-of-negative-life-events-and-widowhood-on-risk-for-dementia
#1
Lotte Gerritsen, Hui-Xin Wang, Chandra A Reynolds, Laura Fratiglioni, Margaret Gatz, Nancy L Pedersen
OBJECTIVE: The aim of the current study was to examine the effect of negative life events and widowhood on the incidence of dementia. METHODS: Data were from four Swedish longitudinal cohort studies with a total of nearly 2,000 participants and 8-25 years of follow-up. Seven stressful events were examined for which data were available in all cohorts. Clinical dementia diagnoses were made through medical and psychological examinations. Cox proportional hazards models were used to estimate the association between life events and dementia, adjusting for lifestyle and cardiovascular risk factors...
March 16, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28432115/effects-of-exercise-on-vascular-function-structure-and-health-in-humans
#2
Daniel J Green, Kurt J Smith
Physical activity has profound impacts on the vasculature in humans. Acute exercise induces immediate changes in artery function, whereas repeated episodic bouts of exercise induce chronic functional adaptation and, ultimately, structural arterial remodeling. The nature of these changes in function and structure are dependent on the characteristics of the training load and may be modulated by other factors such as exercise-induced inflammation and oxidative stress. The clinical implications of these physiological adaptations are profound...
April 21, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28431607/sigma-1-receptor-in-brain-ischemia-reperfusion-possible-role-in-the-nr2a-induced-pathway-to-regulate-brain-derived-neurotrophic-factor
#3
Qian Xu, Xue-Fei Ji, Tian-Yan Chi, Peng Liu, Ge Jin, Ling Chen, Li-Bo Zou
Sigma-1 receptor (σ1r) activation could attenuate the learning and memory deficits in the AD model, ischemia model and others. In our previous study, the activation of σ1r increased the expression of brain-derived neurotrophic factor (BDNF), possibly through the NR2A-induced pathway, and σ1r agonists might function as neuroprotectant agents in vascular dementia. Here, we used σ1r knockout mice to confirm the role of σ1r. Furthermore, an antagonist of NR2A was first used to investigate whether the NR2A-induced pathway is the necessary link between σ1r and BDNF...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431036/effects-of-delay-duration-on-the-wms-logical-memory-performance-of-older-adults-with-probable-alzheimer-s-disease-probable-vascular-dementia-and-normal-cognition
#4
Valencia Montgomery, Katie Harris, Anthony Stabler, Lisa H Lu
Objective: To examine how the duration of time delay between Wechsler Memory Scale (WMS) Logical Memory I and Logical Memory II (LM) affected participants' recall performance. Method: There are 46,146 total Logical Memory administrations to participants diagnosed with either Alzheimer's disease (AD), vascular dementia (VaD), or normal cognition in the National Alzheimer's Disease Coordinating Center's Uniform Data Set. Results: Only 50% of the sample was administered the standard 20-35 min of delay as specified by WMS-R and WMS-III...
May 1, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28430290/frequency-and-topography-of-small-cerebrovascular-lesions-in-vascular-and-in-mixed-dementia-a-post-mortem-7-tesla-magnetic-resonance-imaging-study-with-neuropathological-correlates
#5
Jacques De Reuck, Florent Auger, Nicolas Durieux, Vincent Deramecourt, Claude-Alain Maurage, Charlotte Cordonnier, Florence Pasquier, Didier Leys, Regis Bordet
<i><b>Introduction</b>: Mixed dementia (MixD) refers to a combination of definite Alzheimer's disease (AD) and vascular encephalopathy. The existence of a "pure" type of vascular dementia (VaD) is controversial. There is a need to find magnetic resonance imaging (MRI) characteristics allowing the distinction between VaD and MixD. The present post-mortem 7.0-tesla MRI compares the frequency or severity and the topography of the small cerebrovascular lesions in brains of patients with VaD and with MixD...
2017: Folia Neuropathologica
https://www.readbyqxmd.com/read/28430012/zo-1-expression-is-suppressed-by-gm-csf-via-mir-96-erg-in-brain-microvascular-endothelial-cells
#6
Hu Zhang, Shuhong Zhang, Jilin Zhang, Dongxin Liu, Jiayi Wei, Wengang Fang, Weidong Zhao, Yuhua Chen, Deshu Shang
The level of granulocyte-macrophage colony-stimulating factor (GM-CSF) increases in some disorders such as vascular dementia, Alzheimer's disease, and multiple sclerosis. We previously reported that in Alzheimer's disease patients, a high level of GM-CSF in the brain parenchyma downregulated expression of ZO-1, a blood-brain barrier tight junction protein, and facilitated the infiltration of peripheral monocytes across the blood-brain barrier. However, the molecular mechanism underlying regulation of ZO-1 expression by GM-CSF is unclear...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28429235/regulation-of-human-brain-microvascular-endothelial-cell-adhesion-and-barrier-functions-by-memantine
#7
Fei Wang, Zhirong Zou, Yi Gong, Dong Yuan, Xun Chen, Tao Sun
Vascular risk factors have been linked to cognitive decline and dementia in the elderly. Microvascular inflammation, especially of the endothelium, may contribute to the progression of neurodegenerative events in Alzheimer's disease (AD). Memantine, an uncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, is a licensed drug used for the treatment of moderate to severe AD. However, little information is available regarding its anti-inflammatory effects on the endothelium. In this study, we investigated the effects of memantine on human brain microvascular endothelial dysfunction induced by the pro-inflammatory cytokine tumor necrosis factor-α (TNF-α)...
April 20, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28428977/19th-workshop-of-the-international-stroke-genetics-consortium-april-28-29-2016-boston-massachusetts-usa-2016-001-mri-defined-cerebrovascular-genomics-the-charge-consortium
#8
S Debette, Y Saba, D Vojinovic, X Jian, H Adams, G Chauhan, M Sargurupremraj, S Kaffashian, J Ding, J C Bis, P Nyquist, K Mather, C Van Duijn, L J Launer, M A Ikram, H Schmidt, W T Longstreth, M Fornage, S Seshadri
The CHARGE consortium is an investigator-initiated collaboration to facilitate meta-analyses of genome-wide association studies (GWAS) and genomic analyses based on next generation sequencing (NGS), among multiple large and well-phenotyped population-based cohort studies around the world (http://www.chargeconsortium.com). Within the neuro-CHARGE working group, we are presenting an update of ongoing genomic studies on MRI-markers of cerebrovascular disease. Large population-based studies have shown that the burden of cerebrovascular disease extends far beyond that of clinical stroke...
March 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28428166/vascular-cognitive-impairment-in-a-memory-clinic-population-rationale-and-design-of-the-utrecht-amsterdam-clinical-features-and-prognosis-in-vascular-cognitive-impairment-trace-vci-study
#9
EDITORIAL
Jooske Marije Funke Boomsma, Lieza Geertje Exalto, Frederik Barkhof, Esther van den Berg, Jeroen de Bresser, Rutger Heinen, Huiberdina Lena Koek, Niels Daniël Prins, Philip Scheltens, Henry Chanoch Weinstein, Wiesje Maria van der Flier, Geert Jan Biessels
BACKGROUND: Vascular Cognitive Impairment (VCI) refers to cognitive dysfunction due to vascular brain injury, as a single cause or in combination with other, often neurodegenerative, etiologies. VCI is a broad construct that captures a heterogeneous patient population both in terms of cognitive and noncognitive symptoms and in terms of etiology and prognosis. This provides a challenge when applying this construct in clinical practice. OBJECTIVE: This paper presents the rationale and design of the TRACE-VCI study, which investigates the clinical features and prognosis of VCI in a memory clinic setting...
April 19, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28424374/mechanisms-of-vascular-disease-in-dementia-what-does-industry-want-to-know
#10
EDITORIAL
Paul B Wren, Derek Hill, Andrew Lockhart
Despite recent advances in basic and clinical science, dementia remains an area of high unmet medical need. The role of cerebrovascular mechanisms in the pathogenesis and progression of cognitive and functional impairment in dementia is being revived. In order to facilitate the development of therapeutic approaches, it is critical that a number of fundamental elements are integrated into research strategies investigating cerebrovascular pathologies as these will maximize the opportunity of bringing medicines to patients in a timely manner...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28424272/trends-in-dementia-prevalence-incidence-and-survival-rate-in-a-japanese-community
#11
Tomoyuki Ohara, Jun Hata, Daigo Yoshida, Naoko Mukai, Masaharu Nagata, Toru Iwaki, Takanari Kitazono, Shigenobu Kanba, Yutaka Kiyohara, Toshiharu Ninomiya
OBJECTIVE: To investigate secular trends in the prevalence, incidence, and survival rate of dementia in a Japanese elderly population in a comprehensive manner. METHODS: Five cross-sectional surveys of dementia were conducted among residents of a Japanese community, aged ≥65 years, in 1985, 1992, 1998, 2005, and 2012. We also established 2 cohorts consisting of the residents of this age group without dementia in 1988 (n = 803) and 2002 (n = 1,231), and each was followed for 10 years...
April 19, 2017: Neurology
https://www.readbyqxmd.com/read/28421328/association-of-adiponectin-leptin-and-resistin-with-inflammatory-markers-and-obesity-in-dementia
#12
Małgorzata Bednarska-Makaruk, Ałła Graban, Anna Wiśniewska, Wanda Łojkowska, Anna Bochyńska, Magdalena Gugała-Iwaniuk, Ksenia Sławińska, Agnieszka Ługowska, Danuta Ryglewicz, Hanna Wehr
The aim of the study was to determine the role of adiponectin, leptin and resistin in various types of dementia and to investigate their association with inflammatory markers, insulin resistance and abdominal obesity. In 205 patients with dementia [89 with Alzheimer's disease (AD), 47 with vascular dementia (VaD), 69 with mixed dementia (MD)], 113 persons with mild cognitive impairment and in 107 controls serum adiponectin, leptin and resistin levels, pro-inflammatory [interleukin-6 (IL-6), C-reactive protein (hsCRP) and chitotriosidase] and anti-inflammatory (25-OH vitamin D, HDL-cholesterol and paraoxonase 1) markers, as well as glucose metabolism parameters (glucose, insulin and HOMA-IR) were determined...
April 18, 2017: Biogerontology
https://www.readbyqxmd.com/read/28420323/study-protocol-insight-46-a-neuroscience-sub-study-of-the-mrc-national-survey-of-health-and-development
#13
Christopher A Lane, Thomas D Parker, Dave M Cash, Kirsty Macpherson, Elizabeth Donnachie, Heidi Murray-Smith, Anna Barnes, Suzie Barker, Daniel G Beasley, Jose Bras, David Brown, Ninon Burgos, Michelle Byford, M Jorge Cardoso, Ana Carvalho, Jessica Collins, Enrico De Vita, John C Dickson, Norah Epie, Miklos Espak, Susie M D Henley, Chandrashekar Hoskote, Michael Hutel, Jana Klimova, Ian B Malone, Pawel Markiewicz, Andrew Melbourne, Marc Modat, Anette Schrag, Sachit Shah, Nikhil Sharma, Carole H Sudre, David L Thomas, Andrew Wong, Hui Zhang, John Hardy, Henrik Zetterberg, Sebastien Ourselin, Sebastian J Crutch, Diana Kuh, Marcus Richards, Nick C Fox, Jonathan M Schott
BACKGROUND: Increasing age is the biggest risk factor for dementia, of which Alzheimer's disease is the commonest cause. The pathological changes underpinning Alzheimer's disease are thought to develop at least a decade prior to the onset of symptoms. Molecular positron emission tomography and multi-modal magnetic resonance imaging allow key pathological processes underpinning cognitive impairment - including β-amyloid depostion, vascular disease, network breakdown and atrophy - to be assessed repeatedly and non-invasively...
April 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28419991/effect-of-melatonin-and-resveratrol-against-memory-impairment-and-hippocampal-damage-in-a-rat-model-of-vascular-dementia
#14
Dongfang Shen, Xiaoyan Tian, Wenxu Sang, Rongrong Song
OBJECTIVES: This study was intended to investigate whether treatment with resveratrol and melatonin alone or in combination can exert neurorestorative effects in a rat model of vascular dementia. METHODS: Briefly, male Wistar rats were subjected to permanent bilateral common carotid artery occlusion (BCCAO) by surgery. After 4 weeks, the cognitive deficits were assessed using the Morris water maze and novel object recognition tests. The biochemical parameters of oxidative stress and inflammation were also assessed...
April 19, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28412946/big-data-and-data-repurposing-using-existing-data-to-answer-new-questions-in-vascular-dementia-research
#15
Fergus N Doubal, Myzoon Ali, G David Batty, Andreas Charidimou, Maria Eriksdotter, Martin Hofmann-Apitius, Yun-Hee Kim, Deborah A Levine, Gillian Mead, Hermann A M Mucke, Craig W Ritchie, Charlotte J Roberts, Tom C Russ, Robert Stewart, William Whiteley, Terence J Quinn
INTRODUCTION: Traditional approaches to clinical research have, as yet, failed to provide effective treatments for vascular dementia (VaD). Novel approaches to collation and synthesis of data may allow for time and cost efficient hypothesis generating and testing. These approaches may have particular utility in helping us understand and treat a complex condition such as VaD. METHODS: We present an overview of new uses for existing data to progress VaD research. The overview is the result of consultation with various stakeholders, focused literature review and learning from the group's experience of successful approaches to data repurposing...
April 17, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28410661/vascular-contributions-to-cognitive-impairment-in-late-life
#16
REVIEW
Helena C Chui, Liliana Ramirez Gomez
Cerebrovascular disease (CVD) is the second leading cause of cognitive impairment in late life. Structural neuroimaging offers the most sensitive and specific biomarkers for hemorrhages and infarcts, but there are significant limitations in its ability to detect microvascular disease, microinfarcts, dynamic changes in the blood-brain barrier, and preclinical cerebrovascular disease. Autopsy studies disclose the common co-occurrence of vascular and neurodegenerative conditions, suggesting that in late life, a multifactorial approach to cognitive impairment may be more appropriate than traditional dichotomous classifications...
May 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/28410350/education-socioeconomic-status-and-intelligence-in-childhood-and-stroke-risk-in-later-life-a-meta-analysis
#17
Caroline A McHutchison, Ellen V Backhouse, Vera Cvoro, Susan D Shenkin, Joanna M Wardlaw
BACKGROUND: Stroke is the second most common cause of death, and a common cause of dependency and dementia. Adult vascular risk factors and socioeconomic status (SES) are associated with increased risk, but less is known about early life risk factors, such as education, childhood SES, or intelligence (IQ). METHODS: We comprehensively searched Medline, PsycINFO and EMBASE from inception to November 2015. We included all studies reporting data on >50 strokes examining childhood/premorbid IQ, SES, and education...
April 7, 2017: Epidemiology
https://www.readbyqxmd.com/read/28407377/biomarkers-of-microvascular-endothelial-dysfunction-predict-incident-dementia-a-population-based-prospective-study
#18
H Holm, K Nägga, E D Nilsson, F Ricci, O Melander, O Hansson, E Bachus, M Magnusson, A Fedorowski
BACKGROUND: Cerebral endothelial dysfunction occurs in a spectrum of neurodegenerative diseases. Whether biomarkers of microvascular endothelial dysfunction can predict dementia is largely unknown. We explored the longitudinal association of midregional pro-atrial natriuretic peptide (MR-proANP), C-terminal endothelin-1 (CT-proET-1) and midregional pro-adrenomedullin (MR-proADM) with dementia and subtypes among community-dwelling older adults. METHODS: A population-based cohort of 5,347 individuals (men, 70%; age, 69±6 years) without prevalent dementia provided plasma for determination of MR-proANP, CT-proET-1 and MR-proADM...
April 13, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28405701/-diabetes-and-the-central-nervous-system
#19
F Erbguth
Diabetes increases the risk of stroke by a factor of 2-4. For primary and secondary stroke prevention, strict glycemic control alone was not superior to standard treatment. However, the risk of stroke in patients with diabetes could be reduced by multimodal risk interventions during the last 20 years by about 50%. Increased glucose levels (poststroke hyperglycemia (PSH)) which indicate a worse prognosis develop in 50% of stroke patients. The potentially beneficial effect of strict glycemic control in PSH by i...
April 12, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28403222/comorbidity-and-dementia-a-nationwide-survey-in-taiwan
#20
Ting-Bin Chen, Szu-Yu Yiao, Yu Sun, Huey-Jane Lee, Shu-Chien Yang, Ming-Jang Chiu, Ta-Fu Chen, Ker-Neng Lin, Li-Yu Tang, Chung-Chih Lin, Pei-Ning Wang
BACKGROUND: Comorbid medical diseases are highly prevalent in the geriatric population, imposing hardship on healthcare services for demented individuals. Dementia also complicates clinical care for other co-existing medical conditions. This study investigated the comorbidities associated with dementia in the elderly population aged 65 years and over in Taiwan. METHODS: We conducted a nationwide, population-based, cross-sectional survey; participants were selected by computerized random sampling from all 19 Taiwan counties between December 2011 and March 2013...
2017: PloS One
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