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https://www.readbyqxmd.com/read/29676499/responsibility-and-age-related-dementia
#1
Petr Frantik
This article identifies the assumption of responsibility as a basic need of human beings and applies the concept specifically to older people with dementia or Alzheimer's disease. It suggests a two-level concept of responsibility, based on the approach of discourse ethicist Karl-Otto Apel, as a promising approach to recognizing human diversity while at the same time respecting people's equal rights to participate in discourse. This concept can serve as a theoretical starting point for the construction of individually adapted types of responsibility...
May 2018: Bioethics
https://www.readbyqxmd.com/read/29675796/construction-of-transcriptional-regulatory-network-of-alzheimer-s-disease-based-on-panda-algorithm
#2
Jieyuan Ding, Wei Kong, Xiaoyang Mou, Shuaiqun Wang
The focus of modern biomedical research concentrates on molecular level regulatory mechanisms and how the normal and abnormal phenotypes of tissue functional are affected by regulatory mechanisms. Most of the research on regulatory mechanism starts from the reconstruction of gene regulation network. At present, a large number of reconstruction methods construct the network using a single data set. These methods of inferring and predicting the relationship between the target gene and the transcription factor (TF) can be used to identify individual interactions between genes, while there is not much research on the interaction of many functional-related genes...
April 19, 2018: Interdisciplinary Sciences, Computational Life Sciences
https://www.readbyqxmd.com/read/29674420/white-matter-reference-region-in-pet-studies-of-11-c-pittsburgh-compound-b-uptake-effects-of-age-and-amyloid-%C3%AE-deposition
#3
Val J Lowe, Emily S Lundt, Matthew L Senjem, Christopher G Schwarz, Hoon-Ki Min, Scott A Przybelski, Kejal Kantarci, David Knopman, Ronald C Petersen, Clifford R Jack
Amyloid-β (Aβ) deposition as seen on positron emission tomography (PET) using an Aβ binding agent is a critical diagnostic biomarker for Alzheimer's disease (AD). Some reports suggest using white matter (WM) as a reference region for quantification of serial Aβ PET studies; however, nonspecific WM retention in Aβ PET in people with dementia or in cognitively unimpaired (CU) has been widely reported and is poorly understood. Methods: To investigate the suitability of WM as a reference region and the factors affecting WM 11 C-Pittsburgh Compound B (PiB) uptake variability, we conducted a retrospective study on two large data sets: 1) a longitudinal study of participants ( n = 577) who were CU, had mild cognitive impairment (MCI), or had dementia likely due to AD (ADD); and 2) a cross-sectional study of single-scan PET imaging in CU subjects ( n = 1349)...
April 19, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29674032/reliable-determination-of-new-lipid-peroxidation-compounds-as-potential-early-alzheimer-disease-biomarkers
#4
Ana García-Blanco, Carmen Peña-Bautista, Camille Oger, Claire Vigor, Jean-Marie Galano, Thierry Durand, Nuria Martín-Ibáñez, Miguel Baquero, Máximo Vento, Consuelo Cháfer-Pericás
Lipid peroxidation plays an important role in Alzheimer Disease, so corresponding metabolites found in urine samples could be potential biomarkers. The aim of this work is to develop a reliable ultra-performance liquid chromatography-tandem mass spectrometry analytical method to determine a new set of lipid peroxidation compounds in urine samples. Excellent sensitivity was achieved with limits of detection between 0.08 and 17 nmol L-1 , which renders this method suitable to monitor analytes concentrations in real samples...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29673784/visual-texture-agnosia-in-dementia-with-lewy-bodies-and-alzheimer-s-disease
#5
Yuka Oishi, Toru Imamura, Tatsuo Shimomura, Kyoko Suzuki
BACKGROUND: Neuroimaging and some clinical studies have reported that the ventral visual pathway is relevant for visual texture recognition. Although a variety of visual deficits have been reported in patients with Alzheimer's disease (AD) and dementia with Lewy bodies (DLB), visual material identification and texture recognition have not been thoroughly examined. OBJECTIVES: To investigate visual texture recognition in patients with AD and DLB and to clarify the relationship between visual texture recognition and various visuoperceptual functions...
March 27, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29673549/tau-and-neuroinflammation-what-impact-for-alzheimer-s-disease-and-tauopathies
#6
REVIEW
Cyril Laurent, Luc Buée, David Blum
Alzheimer's Disease (AD) is a chronic neurodegenerative disorder and the most common type of dementia (60-80% of cases). In 2016, nearly 44 million people were affected by AD or related dementia. AD is characterized by progressive neuronal damages leading to subtle and latter obvious decline in cognitive functions including symptoms such as memory loss or confusion, which ultimately require full-time medical care. Its neuropathology is defined by the extracellular accumulation of amyloid-β (Aβ) peptide into amyloid plaques, and intraneuronal neurofibrillary tangles (NFT) consisting of aggregated hyper- and abnormal phosphorylation of tau protein...
February 2018: Biomedical Journal
https://www.readbyqxmd.com/read/29672930/clinical-and-imaging-correlates-of-amyloid-deposition-in-dementia-with-lewy-bodies
#7
Paul C Donaghy, Michael J Firbank, Alan J Thomas, Jim Lloyd, George Petrides, Nicola Barnett, Kirsty Olsen, John T O'Brien
BACKGROUND: Amyloid deposition is common in dementia with Lewy bodies, but its pathophysiological significance is unclear. OBJECTIVE: The objective of this study was to investigate the relationship between amyloid deposition and clinical profile, gray matter volume, and brain perfusion in dementia with Lewy bodies. METHODS: Dementia with Lewy bodies (n = 37), Alzheimer's disease (n = 20), and controls (n = 20) underwent a thorough clinical assessment, 3T MRI, and early- and late-phase 18 F-Florbetapir PET-CT to assess cortical perfusion and amyloid deposition, respectively...
April 19, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29672813/-topics-on-which-relatives-of-persons-with-dementia-seek-counseling-over-telephone-or-email-current-results-of-a-nationwide-counseling-service-of-the-german-alzheimer-society
#8
Anna Pendergrass, Saskia Weiß, Elmar Gräßel
BACKGROUND: Since 15 years, the Alzheimer 's Telephone of the German Alzheimer Society (Deutsche Alzheimer Gesellschaft e.V.; DAlzG), a nationwide psychosocial counseling service, has been offering support for people with dementia (PwD) and their families. The aim of this study was to evaluate: a) why informal PwD caregivers seek telephone counseling, b) whether these telephone calls are one-time counseling or long-term support, and c) whether the telephone inquiries differ from the email-based inquiries with regard to the addressed issues...
April 19, 2018: Das Gesundheitswesen
https://www.readbyqxmd.com/read/29672680/cognitive-correlates-of-%C3%AE-4%C3%AE-2-nicotinic-acetylcholine-receptors-in-mild-alzheimer-s-dementia
#9
Osama Sabri, Philipp M Meyer, Susanne Gräf, Swen Hesse, Stephan Wilke, Georg-Alexander Becker, Michael Rullmann, Marianne Patt, Julia Luthardt, Gudrun Wagenknecht, Alexander Hoepping, Rene Smits, Annegret Franke, Bernhard Sattler, Solveig Tiepolt, Steffen Fischer, Winnie Deuther-Conrad, Ulrich Hegerl, Henryk Barthel, Peter Schönknecht, Peter Brust
In early Alzheimer's dementia, there is a need for PET biomarkers of disease progression with close associations to cognitive dysfunction that may aid to predict further cognitive decline and neurodegeneration. Amyloid biomarkers are not suitable for that purpose. The α4β2 nicotinic acetylcholine receptors (α4β2-nAChRs) are widely abundant in the human brain. As neuromodulators they play an important role in cognitive functions such as attention, learning and memory. Post-mortem studies reported lower expression of α4β2-nAChRs in more advanced Alzheimer's dementia...
April 17, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29671901/using-dolls-for-therapeutic-purposes-a-study-on-nursing-home-residents-with-severe-dementia
#10
A Cantarella, E Borella, S Faggian, A Navuzzi, R De Beni
OBJECTIVES: Among the psychosocial interventions intended to reduce the behavioral and psychological symptoms of dementia (BPSD), doll therapy (DT) is increasingly used in clinical practice. Few studies on DT have been based on empirical data obtained with an adequate procedure; however, none have assessed its efficacy using an active control group, and the scales used to assess changes in BPSD are usually unreliable. The aim of the present study was to measure the impact of DT on people with severe dementia with a reliable, commonly used scale for assessing their BPSD, and the related distress in formal caregivers...
April 19, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29671396/composite-mathematical-modeling-of-calcium-signaling-behind-neuronal-cell-death-in-alzheimer-s-disease
#11
Bobby Ranjan, Ket Hing Chong, Jie Zheng
BACKGROUND: Alzheimer's disease (AD) is a progressive neurological disorder, recognized as the most common cause of dementia affecting people aged 65 and above. AD is characterized by an increase in amyloid metabolism, and by the misfolding and deposition of β-amyloid oligomers in and around neurons in the brain. These processes remodel the calcium signaling mechanism in neurons, leading to cell death via apoptosis. Despite accumulating knowledge about the biological processes underlying AD, mathematical models to date are restricted to depicting only a small portion of the pathology...
April 11, 2018: BMC Systems Biology
https://www.readbyqxmd.com/read/29671334/alzheimer-disease-non-pharmacological-and-pharmacological-management-of-cognition-and-neuropsychiatric-symptoms
#12
Samantha M Loi, Dhamidhu Eratne, Wendy Kelso, Dennis Velakoulis, Jeffrey Cl Looi
OBJECTIVES: This clinical update review focuses on the management of cognition and the neuropsychiatric features of Alzheimer's disease (AD) and highlights current issues regarding pharmacological and non-pharmacological treatment, putative therapeutics and recent relevant research findings in this area. CONCLUSIONS: AD is a neurodegenerative progressive condition characterised by cognitive impairment and functional decline. Most people with AD will demonstrate neuropsychiatric features, better known as behavioural and psychological symptoms of dementia (BPSD)...
March 1, 2018: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/29670545/effect-of-the-nu-age-diet-on-cognitive-functioning-in-older-adults-a-randomized-controlled-trial
#13
Anna Marseglia, Weili Xu, Laura Fratiglioni, Cristina Fabbri, Agnes A M Berendsen, Agata Bialecka-Debek, Amy Jennings, Rachel Gillings, Nathalie Meunier, Elodie Caumon, Susan Fairweather-Tait, Barbara Pietruszka, Lisette C P G M De Groot, Aurelia Santoro, Claudio Franceschi
Background: Findings from animal and epidemiological research support the potential neuroprotective benefits from healthy diets. However, to establish diet-neuroprotective causal relations, evidence from dietary intervention studies is needed. NU-AGE is the first multicenter intervention assessing whether a diet targeting health in aging can counteract the age-related physiological changes in different organs, including the brain. In this study, we specifically investigated the effects of NU-AGE's dietary intervention on age-related cognitive decline...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29669557/discovery-biology-of-neuropsychiatric-syndromes-dbns-a-center-for-integrating-clinical-medicine-and-basic-science
#14
Biju Viswanath, Naren P Rao, Janardhanan C Narayanaswamy, Palanimuthu T Sivakumar, Arun Kandasamy, Muralidharan Kesavan, Urvakhsh Meherwan Mehta, Ganesan Venkatasubramanian, John P John, Odity Mukherjee, Meera Purushottam, Ramakrishnan Kannan, Bhupesh Mehta, Thennarasu Kandavel, B Binukumar, Jitender Saini, Deepak Jayarajan, A Shyamsundar, Sydney Moirangthem, K G Vijay Kumar, Jagadisha Thirthalli, Prabha S Chandra, Bangalore N Gangadhar, Pratima Murthy, Mitradas M Panicker, Upinder S Bhalla, Sumantra Chattarji, Vivek Benegal, Mathew Varghese, Janardhan Y C Reddy, Padinjat Raghu, Mahendra Rao, Sanjeev Jain
BACKGROUND: There is emerging evidence that there are shared genetic, environmental and developmental risk factors in psychiatry, that cut across traditional diagnostic boundaries. With this background, the Discovery biology of neuropsychiatric syndromes (DBNS) proposes to recruit patients from five different syndromes (schizophrenia, bipolar disorder, obsessive compulsive disorder, Alzheimer's dementia and substance use disorders), identify those with multiple affected relatives, and invite these families to participate in this study...
April 18, 2018: BMC Psychiatry
https://www.readbyqxmd.com/read/29669461/connected-speech-and-language-in-mild-cognitive-impairment-and-alzheimer-s-disease-a-review-of-picture-description-tasks
#15
Kimberly D Mueller, Bruce Hermann, Jonilda Mecollari, Lyn S Turkstra
INTRODUCTION: The neuropsychological profile of people with mild cognitive impairment (MCI) and Alzheimer's disease (AD) dementia includes a history of decline in memory and other cognitive domains, including language. While language impairments have been well described in AD dementia, language features of MCI are less well understood. Connected speech and language analysis is the study of an individual's spoken discourse, usually elicited by a target stimulus, the results of which can facilitate understanding of how language deficits typical of MCI and AD dementia manifest in everyday communication...
April 19, 2018: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/29669164/galantamine-is-not-a-positive-allosteric-modulator-of-human-%C3%AE-4%C3%AE-2-or-%C3%AE-7-nicotinic-acetylcholine-receptors
#16
Natalia M Kowal, Philip K Ahring, Vivian W Y Liao, Dinesh C Indurti, Benjamin S Harvey, Susan M O'Connor, Mary Chebib, Elin S Olafsdottir, Thomas Balle
BACKGROUND AND PURPOSE: The alkaloid galantamine was originally isolated from the green snowdrop Galanthus woronowii and is currently marketed as a drug for treatment of mild to moderate dementia in Alzheimer's disease patients. In addition to a well-documented proficiency of inhibiting the acetylcholinesterase enzyme, galantamine has been reported to increase neuronal nicotinic acetylcholine (nACh) receptor function by acting as a positive allosteric modulator. Yet, there remains controversy regarding these findings in the literature...
April 18, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29669100/the-impact-of-changes-in-population-health-and-mortality-on-future-prevalence-of-alzheimer-s-disease-and-other-dementias-in-the-united-states
#17
Julie M Zissimopoulos, Bryan C Tysinger, Patricia A St Clair, Eileen M Crimmins
Objectives: We assessed potential benefits for older Americans of reducing risk factors associated with dementia. Methods: A dynamic simulation model tracked a national cohort of persons 51 and 52 years of age to project dementia onset and mortality in risk reduction scenarios for diabetes, hypertension, and dementia. Results: We found reducing incidence of diabetes by 50% did not reduce number of years a person ages 51 or 52 lived with dementia and increased the population ages 65 and older in 2040 with dementia by about 115,000...
April 16, 2018: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/29669098/the-association-of-early-life-factors-and-declining-incidence-rates-of-dementia-in-an-elderly-population-of-african-americans
#18
Hugh C Hendrie, Valerie Smith-Gamble, Kathleen A Lane, Christianna Purnell, Daniel O Clark, Sujuan Gao
Objectives: To explore the possible association of childhood residence, education levels, and occupation with declining incidence rates of dementia in 2 cohorts of elderly African Americans. Methods: African Americans residing in Indianapolis without dementia were enrolled in 1992 and 2001 and evaluated every 2-3 years. The cohorts consist of 1,440 participants in 1992 and 1,835 participants in 2001 aged 70 years and older. Cox proportional hazard regression models were used to compare cohort differences in dementia and Alzheimer's disease (AD) risk...
April 16, 2018: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/29668866/distinct-interplay-between-atrophy-and-hypometabolism-in-alzheimer-s-versus-semantic-dementia
#19
Alexandre Bejanin, Renaud La Joie, Brigitte Landeau, Serge Belliard, Vincent de La Sayette, Francis Eustache, Béatrice Desgranges, Gaël Chételat
Multimodal neuroimaging analyses offer additional information beyond that provided by each neuroimaging modality. Thus, direct comparisons and correlations between neuroimaging modalities allow revealing disease-specific topographic relationships. Here, we compared the topographic discrepancies between atrophy and hypometabolism in two neurodegenerative diseases characterized by distinct pathological processes, namely Alzheimer's disease (AD) versus semantic dementia (SD), to unravel their specific influence on local and global brain structure-function relationships...
April 13, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29667565/longitudinal-associations-between-different-dementia-diagnoses-and-medication-use-jointly-accounting-for-dropout
#20
George O Agogo, Christine M Ramsey, Danijela Gnjidic, Daniela C Moga, Heather Allore
ABSTRACTBackground:Longitudinal studies of older adults are characterized by high dropout rates, multimorbid conditions, and multiple medication use, especially proximal to death. We studied the association between multiple medication use and incident dementia diagnoses including Alzheimer's disease (AD), vascular dementia (VD), and Lewy-body dementia (LBD), simultaneously accounting for dropout. METHODS: Using the National Alzheimer's Coordinating Center data with three years of follow-up, a set of covariate-adjusted models that ignore dropout was fit to complete-case data, and to the whole-cohort data...
April 18, 2018: International Psychogeriatrics
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