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Alzheimers dementia

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https://www.readbyqxmd.com/read/28227979/dispersion-entropy-for-the-analysis-of-resting-state-meg-regularity-in-alzheimer-s-disease
#1
Hamed Azami, Mostafa Rostaghi, Alberto Fernandez, Javier Escudero, Hamed Azami, Mostafa Rostaghi, Alberto Fernandez, Javier Escudero, Alberto Fernandez, Javier Escudero, Mostafa Rostaghi, Hamed Azami
Alzheimer's disease (AD) is a progressive degenerative brain disorder affecting memory, thinking, behaviour and emotion. It is the most common form of dementia and a big social problem in western societies. The analysis of brain activity may help to diagnose this disease. Changes in entropy methods have been reported useful in research studies to characterize AD. We have recently proposed dispersion entropy (DisEn) as a very fast and powerful tool to quantify the irregularity of time series. The aim of this paper is to evaluate the ability of DisEn, in comparison with fuzzy entropy (FuzEn), sample entropy (SampEn), and permutation entropy (PerEn), to discriminate 36 AD patients from 26 elderly control subjects using resting-state magnetoencephalogram (MEG) signals...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227768/measures-of-the-brain-functional-network-that-correlate-with-alzheimer-s-neuropsychological-test-scores-an-fmri-and-graph-analysis-study
#2
Soroosh Golbabaei, Amin Dadashi, Hamid Soltanian-Zadeh, Soroosh Golbabaei, Amin Dadashi, Hamid Soltanian-Zadeh, Soroosh Golbabaei, Amin Dadashi, Hamid Soltanian-Zadeh
Neural degeneration in Alzheimer's disease (AD) leads to structural topology deformation that in turn changes brain functionality. The main aim of the present study is to find the brain's functional connectivity network (FCN) correlates of Alzheimer's psychological test scores. To this end, the brain's FCN is extracted from the resting state functional magnetic resonance images (rs-fMRI) of healthy controls and patients with AD and represented as a graph. Then, network measures are calculated from the graphs...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227108/analysis-of-spontaneous-eeg-activity-in-alzheimer-s-disease-using-cross-sample-entropy-and-graph-theory
#3
Carlos Gomez, Jesus Poza, Javier Gomez-Pilar, Alejandro Bachiller, Celia Juan-Cruz, Miguel A Tola-Arribas, Alicia Carreres, Monica Cano, Roberto Hornero, Carlos Gomez, Jesus Poza, Javier Gomez-Pilar, Alejandro Bachiller, Celia Juan-Cruz, Miguel A Tola-Arribas, Alicia Carreres, Monica Cano, Roberto Hornero, Celia Juan-Cruz, Carlos Gomez, Alicia Carreres, Jesus Poza, Monica Cano, Roberto Hornero, Javier Gomez-Pilar, Alejandro Bachiller, Miguel A Tola-Arribas
The aim of this pilot study was to analyze spontaneous electroencephalography (EEG) activity in Alzheimer's disease (AD) by means of Cross-Sample Entropy (Cross-SampEn) and two local measures derived from graph theory: clustering coefficient (CC) and characteristic path length (PL). Five minutes of EEG activity were recorded from 37 patients with dementia due to AD and 29 elderly controls. Our results showed that Cross-SampEn values were lower in the AD group than in the control one for all the interactions among EEG channels...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226665/changes-in-the-eeg-amplitude-as-a-biomarker-for-early-detection-of-alzheimer-s-disease
#4
Ali H Al-Nuaimi, Emmanuel Jammeh, Lingfen Sun, Emmanuel Ifeachor, Ali H Al-Nuaimi, Emmanuel Jammeh, Lingfen Sun, Emmanuel Ifeachor, Emmanuel Jammeh, Lingfen Sun, Ali H Al-Nuaimi, Emmanuel Ifeachor
The rapid increase in the number of older people with Alzheimer's disease (AD) and other forms of dementia represents one of the major challenges to the health and social care systems. Early detection of AD makes it possible for patients to access appropriate services and to benefit from new treatments and therapies, as and when they become available. The onset of AD starts many years before the clinical symptoms become clear. A biomarker that can measure the brain changes in this period would be useful for early diagnosis of AD...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225789/non-melanoma-skin-cancer-and-risk-of-alzheimer-s-disease-and-all-cause-dementia
#5
Sigrun A J Schmidt, Anne G Ording, Erzsébet Horváth-Puhó, Henrik T Sørensen, Victor W Henderson
Cancer patients may be at decreased risk of Alzheimer's disease. This hypothesis is best developed for non-melanoma skin cancer (NMSC), but supportive epidemiological data are sparse. We therefore conducted a nationwide cohort study of the association between NMSC and Alzheimer's disease (main outcome) and all-cause dementia. Using Danish medical databases, we identified adults diagnosed with NMSC between 1 January 1980 and 30 November 2013 (n = 216,221) and a comparison cohort of five individuals matched to each NMSC patient by sex and birth year (n = 1,081,097)...
2017: PloS One
https://www.readbyqxmd.com/read/28225543/cuba-s-aging-and-alzheimer-longitudinal-study
#6
Juan de Jesús Llibre-Rodríguez, Adolfo Valhuerdi-Cepero, Ana M López-Medina, Lisseth Noriega-Fernández, Rutbeskia Porto-Álvarez, Milagros A Guerra-Hernández, Rodolfo I Bosch-Bayard, Tania Zayas-Llerena, Elaine Hernandez-Ulloa, Ana L Rodríguez-Blanco, Enrique Salazar-Pérez, Juan C Llibre-Guerra, Jorge J Llibre-Guerra, Beatriz Marcheco-Teruel
Aging and Alzheimer is a prospective, longitudinal cohort study involving 2944 adults aged ≥65 years from selected areas in Cuba's Havana and Matanzas Provinces. This door-to-door study, which began in 2003, includes periodic assessments of the cohort based on an interview; physical exam; anthropometric measurements; and diagnosis of dementia and its subtypes, other mental disorders, and other chronic non-communicable diseases and their risk factors. Information was gathered on sociodemographic characteristics; disability, dependency and frailty; use of health services; and characteristics of care and caregiver burden...
January 2017: MEDICC Review
https://www.readbyqxmd.com/read/28225193/human-neural-progenitor-transplantation-rescues-behavior-and-reduces-%C3%AE-synuclein-in-a-transgenic-model-of-dementia-with-lewy-bodies
#7
Natalie R S Goldberg, Samuel E Marsh, Joseph Ochaba, Brandon C Shelley, Hayk Davtyan, Leslie M Thompson, Joan S Steffan, Clive N Svendsen, Mathew Blurton-Jones
Synucleinopathies are a group of neurodegenerative disorders sharing the common feature of misfolding and accumulation of the presynaptic protein α-synuclein (α-syn) into insoluble aggregates. Within this diverse group, Dementia with Lewy Bodies (DLB) is characterized by the aberrant accumulation of α-syn in cortical, hippocampal, and brainstem neurons, resulting in multiple cellular stressors that particularly impair dopamine and glutamate neurotransmission and related motor and cognitive function. Recent studies show that murine neural stem cell (NSC) transplantation can improve cognitive or motor function in transgenic models of Alzheimer's and Huntington's disease, and DLB...
February 22, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28224671/outcomes-after-diagnosis-of-mild-cognitive-impairment-in-a-large-autopsy-series
#8
Erin L Abner, Richard J Kryscio, Frederick A Schmitt, David W Fardo, Daniela C Moga, Eseosa T Ighodaro, Gregory A Jicha, Lei Yu, Hiroko H Dodge, Chengjie Xiong, Randall L Woltjer, Julie A Schneider, Nigel J Cairns, David A Bennett, Peter T Nelson
OBJECTIVE: Determine clinical and neuropathological outcomes following a clinical diagnosis of mild cognitive impairment (MCI). METHODS: Data were drawn from a large autopsy series (N=1,337) of individuals followed longitudinally from normal or MCI status to death, derived from four Alzheimer's Disease (AD) Centers in the United States. RESULTS: Mean follow-up was 7.9 years. Of the 874 individuals ever diagnosed with MCI, final clinical diagnoses were varied: 39...
February 22, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28224163/getting-what-they-need-when-they-need-it-identifying-barriers-to-information-needs-of-family-caregivers-to-manage-dementia-related-behavioral-symptoms
#9
Nicole E Werner, Barbara Stanislawski, Katherine A Marx, Daphne C Watkins, Marissa Kobayashi, Helen Kales, Laura N Gitlin
BACKGROUND: Consumer health informatics (CHI) such as web-based applications may provide the platform for enabling the over 15 million family caregivers of patients with Alzheimer's Disease or related dementias the information they need when they need it to support behavioral symptom management. However, for CHI to be successful, it is necessary that it be designed to meet the specific information needs of family caregivers in the context in which caregiving occurs. A sociotechnical systems approach to CHI design can help to understand the contextual complexities of family caregiving and account for those complexities in the design of CHI for family caregivers...
February 22, 2017: Applied Clinical Informatics
https://www.readbyqxmd.com/read/28223934/plasma-cystatin-c-and-high-density-lipoprotein-are-important-biomarkers-of-alzheimer-s-disease-and-vascular-dementia-a-cross-sectional-study
#10
Rui Wang, Zhaoyu Chen, Yongmei Fu, Xiaobo Wei, Jinchi Liao, Xu Liu, Bingjun He, Yunqi Xu, Jing Zou, Xiaoyan Yang, Ruihui Weng, Sheng Tan, Christopher McElroy, Kunlin Jin, Qing Wang
: Objectives: Cystatin C (Cys C) and high-density lipoprotein (HDL) play critical roles in neurodegenerative diseases, such as dementia, Alzheimer's disease (AD) and vascular dementia (VaD). However, whether they can be used as reliable biomarkers to distinguish patients with dementia from healthy subjects and to determine disease severity remain largely unknown. Methods: We conducted a cross-sectional study to determine plasma Cys C and HDL levels of 88 patients with dementia (43 AD patients, 45 VaD patients) and 45 healthy age-matched controls...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28223932/cerebrospinal-fluid-levels-of-amyloid-beta-1-43-mirror-1-42-in-relation-to-imaging-biomarkers-of-alzheimer-s-disease
#11
Ina S Almdahl, Camilla Lauridsen, Per Selnes, Lisa F Kalheim, Christopher Coello, Beata Gajdzik, Ina Møller, Marianne Wettergreen, Ramune Grambaite, Atle Bjørnerud, Geir Bråthen, Sigrid B Sando, Linda R White, Tormod Fladby
Introduction: Amyloid beta 1-43 (Aβ43), with its additional C-terminal threonine residue, is hypothesized to play a role in early Alzheimer's disease pathology possibly different from that of amyloid beta 1-42 (Aβ42). Cerebrospinal fluid (CSF) Aβ43 has been suggested as a potential novel biomarker for predicting conversion from mild cognitive impairment (MCI) to dementia in Alzheimer's disease. However, the relationship between CSF Aβ43 and established imaging biomarkers of Alzheimer's disease has never been assessed...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28223022/early-identification-of-mild-cognitive-impairment-using-incomplete-random-forest-robust-support-vector-machine-and-fdg-pet-imaging
#12
Shen Lu, Yong Xia, Weidong Cai, Michael Fulham, David Dagan Feng
Alzheimer's disease (AD) is the most common type of dementia and will be an increasing health problem in society as the population ages. Mild cognitive impairment (MCI) is considered to be a prodromal stage of AD. The ability to identify subjects with MCI will be increasingly important as disease modifying therapies for AD are developed. We propose a semi-supervised learning method based on robust optimization for the identification of MCI from [18F]Fluorodeoxyglucose PET scans. We extracted three groups of spatial features from the cortical and subcortical regions of each FDG-PET image volume...
February 7, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28222815/cognitive-stimulation-therapy-as-a-sustainable-intervention-for-dementia-in-sub-saharan-africa-feasibility-and-clinical-efficacy-using-a-stepped-wedge-design
#13
Stella-Maria Paddick, Sarah Mkenda, Godfrey Mbowe, Aloyce Kisoli, William K Gray, Catherine L Dotchin, Laura Ternent, Adesola Ogunniyi, John Kissima, Olaide Olakehinde, Declare Mushi, Richard W Walker
BACKGROUND: Cognitive stimulation therapy (CST) is a psychosocial group-based intervention for dementia shown to improve cognition and quality of life with a similar efficacy to cholinesterase inhibitors. Since CST can be delivered by non-specialist healthcare workers, it has potential for use in low-resource environments, such as sub-Saharan Africa (SSA). We aimed to assess the feasibility and clinical effectiveness of CST in rural Tanzania using a stepped-wedge design. METHODS: Participants and their carers were recruited through a community dementia screening program...
February 22, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28222532/prevalence-of-use-of-cardiovascular-drugs-in-dementia-patients-treated-in-general-practices-in-germany
#14
Louis Jacob, Jens Bohlken, Karel Kostev
BACKGROUND: Dementia is a chronic disease associated with numerous cardiovascular disorders. OBJECTIVE: To analyze the prevalence of cardiovascular drug use in dementia patients treated in general practices in Germany. METHODS: The present study included patients who were diagnosed with dementia (Alzheimer's disease, vascular dementia, or unspecified dementia) in 2015. The main outcome measure was the proportion of patients using cardiovascular drugs...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222531/physical-exercise-with-music-maintains-activities-of-daily-living-in-patients-with-dementia-mihama-kiho-project-part-21
#15
Masayuki Satoh, Jun-Ichi Ogawa, Tomoko Tokita, Noriko Nakaguchi, Koji Nakao, Hirotaka Kida, Hidekazu Tomimoto
BACKGROUND: Recent studies suggest that combined non-pharmacological interventions are more beneficial than single interventions for primary and secondary prevention of dementia. We previously reported enhanced effects of physical exercise with music (ExM) on cognitive function in normal elderly people compared to exercise alone. OBJECTIVE: To identify if ExM improves cognitive function and activities of daily living (ADLs) in dementia patients over cognitive stimulation (CS)...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222527/gene-expression-and-methylation-analysis-of-abca7-in-patients-with-alzheimer-s-disease
#16
Kiyohiro Yamazaki, Yuta Yoshino, Takaaki Mori, Taku Yoshida, Yuki Ozaki, Tomoko Sao, Yoko Mori, Shinichiro Ochi, Jun-Ichi Iga, Shu-Ichi Ueno
BACKGROUND/OBJECTIVE: The aim of this study was to examine the blood gene expression and methylation of ATP-binding cassette sub-family A member 7 gene (ABCA7) as a biological marker of AD. METHODS: AD subjects (n = 50; 11 males, 77.7±6.05 years old) and age- and sex-matched healthy controls (n = 50) were recruited. A single nucleotide polymorphism in ABCA7 (rs3764650), methylation rates of CpG sites in the ABCA7 promoter region, and ABCA7 mRNA expression levels in peripheral blood were examined...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222516/intelligent-assistive-technology-for-alzheimer-s-disease-and-other-dementias-a-systematic-review
#17
Marcello Ienca, Jotterand Fabrice, Bernice Elger, Maurizio Caon, Alessandro Scoccia Pappagallo, Reto W Kressig, Tenzin Wangmo
Intelligent assistive technologies (IATs) have the potential of offering innovative solutions to mitigate the global burden of dementia and provide new tools for dementia care. While technological opportunities multiply rapidly, clinical applications are rare as the technological potential of IATs remains inadequately translated into dementia care. In this article, the authors present the results of a systematic review and the resulting comprehensive technology index of IATs with application in dementia care...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222514/one-year-evolution-of-behavioral-and%C3%A2-psychological-symptoms-of-dementia-in-patients-initially-hospitalized-in%C3%A2-cognitive-behavioral-units-the-evital-prospective-cohort
#18
Isabelle Rouch, Elodie Pongan, Béatrice Trombert, Florence Fabre, Nicolas Auguste, Claire Sellier, Magalie Freulon, Sophie Jacqueline, Denis Federico, Christelle Mouchoux, Géraldine Martin-Gaujard, Pierre Krolak-Salmon, Bernard Laurent, Jean-Michel Dorey
BACKGROUND: The 2008-2012 French Alzheimer's Plan has provided hospital Cognitive and Behavioral Units (CBU) to improve the management of patients with productive behavioral and psychological symptoms of dementia (BPSD). Little is known concerning the behavioral outcome of these patients after discharge. OBJECTIVE: The present study investigated the long-term evolution of BPSD over one year after CBU discharge. METHODS: The EVITAL cohort included 221 participants admitted to the CBUs of 3 French hospitals...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222509/galantamine-response-associates-with-agitation-and-the-prefrontal-cortex-in-patients-with-alzheimer-s-disease
#19
Sachiko Nakayama, Akimitsu Suda, Hajime Nakanishi, Yumiko Motoi, Nobutaka Hattori
Behavioral and psychological symptoms of dementia (BPSD) occur in up to 80% of AD patients and represent one of the largest factors contributing to caregiver burden. To analyze the effect of galantamine on BPSD and caregiver burden, we treated a total of 50 patients with mild AD for 12 weeks and evaluated them using the Neuropsychiatric Inventory (NPI) and Japanese version of the Zarit Caregiver Burden Interview (ZBI). We also performed regional cerebral blood flow single photon emission computed tomography (rCBF SPECT) at baseline using three-dimensional sterotatic surface projections...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222506/synaptic-compensation-as-a-probable-cause-of-prolonged-mild-cognitive-impairment-in-alzheimer-s-disease-implications-from-a-transgenic-mouse-model-of-the-disease
#20
Narjes Baazaoui, Michael Flory, Khalid Iqbal
Alzheimer's disease (AD) is a slow, progressive neurodegenerative disease in which cognitive decline takes place over a period of several years with a very variable period of mild cognitive impairment (MCI) and, in some cases, relatively long period before progression to dementia. The cognitive deficit during MCI is probably due to neuronal loss, an intermediate level of amyloid-β (Aβ) plaques and neurofibrillary tangles (NFT) and synaptosis, which is interrupted with a transient compensatory increase. We found impairment in reference memory accompanied by a decrease in the expression of synaptophysin, β-III tubulin, and MAP2 and a trend for GluR1, at 12 weeks of age in 3xTg-AD mice (hAPPSwe, P301L tau, PS1 [M146V] knock-in), a widely used transgenic model of AD...
February 7, 2017: Journal of Alzheimer's Disease: JAD
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