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Alzheimer Revision

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https://www.readbyqxmd.com/read/28106554/recovery-from-proactive-semantic-interference-in-mild-cognitive-impairment-and-normal-aging-relationship-to-atrophy-in-brain-regions-vulnerable-to-alzheimer-s-disease
#1
David A Loewenstein, Rosie E Curiel, Clinton Wright, Xiaoyan Sun, Noam Alperin, Elzabeth Crocco, Sara J Czaja, Arlene Raffo, Ailyn Penate, Jose Melo, Kimberly Capp, Monica Gamez, Ranjan Duara
BACKGROUND: There is growing evidence that proactive semantic interference (PSI) and failure to recover from PSI may represent early features of Alzheimer's disease (AD). OBJECTIVE: This study investigated the association between PSI, recovery from PSI, and reduced MRI volumes in AD signature regions among cognitively impaired and unimpaired older adults. METHODS: Performance on the LASSI-L (a novel test of PSI and recovery from PSI) and regional brain volumetric measures were compared between 38 cognitively normal (CN) elders and 29 older participants with amnestic mild cognitive impairment (MCI)...
January 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28103749/clinical-practice-with-anti-dementia-drugs-a-revised-third-consensus-statement-from-the-british-association-for-psychopharmacology
#2
John T O'Brien, Clive Holmes, Matthew Jones, Roy Jones, Gill Livingston, Ian McKeith, Peter Mittler, Peter Passmore, Craig Ritchie, Louise Robinson, Elizabeth L Sampson, John-Paul Taylor, Alan Thomas, Alistair Burns
The British Association for Psychopharmacology coordinated a meeting of experts to review and revise its previous 2011 guidelines for clinical practice with anti-dementia drugs. As before, levels of evidence were rated using accepted standards which were then translated into grades of recommendation A-D, with A having the strongest evidence base (from randomised controlled trials) and D the weakest (case studies or expert opinion). Current clinical diagnostic criteria for dementia have sufficient accuracy to be applied in clinical practice (B) and both structural (computed tomography and magnetic resonance imaging) and functional (positron emission tomography and single photon emission computerised tomography) brain imaging can improve diagnostic accuracy in particular situations (B)...
December 1, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28061328/calcium-hypothesis-of-alzheimer-s-disease-and-brain-aging-a%C3%A2-framework-for-integrating-new-evidence-into-a-comprehensive-theory-of-pathogenesis
#3
(no author information available yet)
This article updates the Calcium Hypothesis of Alzheimer's disease and brain aging on the basis of emerging evidence since 1994 (The present article, with the subtitle "New evidence for a central role of Ca(2+) in neurodegeneration," includes three appendices that provide context and further explanations for the rationale for the revisions in the updated hypothesis-the three appendices are as follows: Appendix I "Emerging concepts on potential pathogenic roles of [Ca(2+)]," Appendix II "Future studies to validate the central role of dysregulated [Ca(2+)] in neurodegeneration," and Appendix III "Epilogue: towards a comprehensive hypothesis...
January 3, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28030437/cerebrospinal-fluid-biomarkers-for-the-diagnosis-of-alzheimer-disease-in-south-korea
#4
Sun Ah Park, Won Seok Chae, Hyeong Jun Kim, Ho Sik Shin, Saeromi Kim, Ji Young Im, Sang Il Ahn, Kyoung Dae Min, Soo Jae Yim, Byoung Seok Ye, Sang Won Seo, Jee Hyang Jeong, Kyung Won Park, Seong Hye Choi, Duk L Na
Laboratory-specific reference values for cerebrospinal fluid (CSF) Alzheimer disease (AD) biomarkers are necessary. Our objective was to apply well-known CSF biomarkers and redetermine their diagnostic cutoff values for AD in South Korea. CSF samples from matched control subjects (n=71), patients with AD dementia (ADD, n=76), and other neurological disorders with cognitive decline (OND, n=47) were obtained from 6 Korean dementia clinics according to a standardized protocol. CSF biomarker concentrations were measured using enzyme-linked immunosorbent assay...
December 23, 2016: Alzheimer Disease and Associated Disorders
https://www.readbyqxmd.com/read/27981922/caregiver-burden-quality-of-life-and-vulnerability-towards-psychopathology-in-caregivers-of-patients-with-dementia-alzheimer-s-disease
#5
Saima Dawood
OBJECTIVE: To identify caregivers' burden, evaluate quality of life in them; and predict anxiety and depression in caregivers of patients with Alzheimer's disease (AD). STUDY DESIGN: Cross-sectional study. PLACE AND DURATION OF STUDY: Neurology and Psychiatry Department of Lahore General Hospital (LGH), from January to December, 2013. METHODOLOGY: A purposive sample of 60 caregivers, who had been taking care of patients with AD for more than one year, were recruited from the study centre...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/27942728/sex-and-race-differences-in-the-association-between-statin-use-and-the-incidence-of-alzheimer-disease
#6
Julie M Zissimopoulos, Douglas Barthold, Roberta Diaz Brinton, Geoffrey Joyce
Importance: To our knowledge, no effective treatments exist for Alzheimer disease, and new molecules are years away. However, several drugs prescribed for other conditions have been associated with reducing its risk. Objective: To analyze the association between statin exposure and Alzheimer disease incidence among Medicare beneficiaries. Design, Setting, and Participants: We examined the medical and pharmacy claims of a 20% sample of Medicare beneficiaries from 2006 to 2013 and compared rates of Alzheimer disease diagnosis for 399 979 statin users 65 years of age or older with high or low exposure to statins and with drug molecules for black, Hispanic, and non-Hispanic white people, and men and women of Asian, Native American, or unkown race/ethnicity who are referred to as "other...
December 12, 2016: JAMA Neurology
https://www.readbyqxmd.com/read/27858710/app-mutations-in-cerebral-amyloid-angiopathy-with-or-without-cortical-calcifications-report-of-three-families-and-a%C3%A2-literature-review
#7
François Sellal, David Wallon, Laurent Martinez-Almoyna, Cecilia Marelli, Abhinav Dhar, Héléne Oesterlé, Anne Rovelet-Lecrux, Stéphane Rousseau, Christina E Kourkoulis, Jon Rosand, Zora Y DiPucchio, Matthew Frosch, Claudine Gombert, Bertrand Audoin, Manuéle Mine, Florence Riant, Thierry Frebourg, Didier Hannequin, Dominique Campion, Steven M Greenberg, Elisabeth Tournier-Lasserve, Gaël Nicolas
BACKGROUND: Specific APP mutations cause cerebral amyloid angiopathy (CAA) with or without Alzheimer's disease (AD). OBJECTIVE: We aimed at reporting APP mutations associated with CAA, describe the clinical, cerebrospinal fluid AD biomarkers, and neuroimaging features, and compare them with the data from the literature. METHODS: We performed a retrospective study in two French genetics laboratories by gathering all clinical and neuroimaging data from patients referred for a genetic diagnosis of CAA with an age of onset before 66 years and fulfilling the other Boston revised criteria...
November 14, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27847684/longitudinal-change-in-everyday-function-and-behavioral-symptoms-in-frontotemporal-dementia
#8
Claire M O'Connor, Lindy Clemson, Michael Hornberger, Cristian E Leyton, John R Hodges, Olivier Piguet, Eneida Mioshi
BACKGROUND: The relationship between behavioral changes and functional decline in frontotemporal dementia (FTD) is not well understood. METHODS: Thirty-nine patients (21 behavioral variant FTD [bvFTD], 18 semantic variant primary progressive aphasia [svPPA]) were followed up longitudinally (2-4 years follow-up). Functional (Disability Assessment for Dementia) and behavioral (Cambridge Behavioural Inventory Revised) assessments were included for between-group (pairwise comparisons, mixed model analysis) and within-group analyses (bivariate correlations)...
October 2016: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/27834781/do-cancer-drugs-counteract-neurodegeneration-repurposing-for%C3%A2-alzheimer-s-disease
#9
Fiammetta Monacelli, Michele Cea, Roberta Borghi, Patrizio Odetti, Alessio Nencioni
In spite of in depth investigations in the field of the amyloid cascade hypothesis, so far, no disease modifying therapy has been developed for Alzheimer's disease (AD). The pathophysiology provides some evidence of the inverse correlation between cancer and AD. Both AD and cancer are characterized by abnormal cellular behaviors; trigger factors along with a meta synchronously action is expected to drive cancer or neurodegeneration, supporting, respectively, progressive neuronal loss or uncontrolled cell proliferation in cancer cells...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27802233/multimodal-cognitive-enhancement-therapy-for-patients-with-mild-cognitive-impairment-and-mild-dementia-a%C3%A2-multi-center-randomized-controlled-double-blind-crossover-trial
#10
Ji Won Han, Hyeonggon Lee, Jong Woo Hong, Kayoung Kim, Taehyun Kim, Hye Jin Byun, Ji Won Ko, Jong Chul Youn, Seung-Ho Ryu, Nam-Jin Lee, Chi-Un Pae, Ki Woong Kim
We developed and evaluated the effect of Multimodal Cognitive Enhancement Therapy (MCET) consisting of cognitive training, cognitive stimulations, reality orientation, physical therapy, reminiscence therapy, and music therapy in combination in older people with mild cognitive impairment (MCI) or mild dementia. This study was a multi-center, double-blind, randomized, placebo-controlled, two-period cross-over study (two 8-week treatment phases separated by a 4-week wash-out period). Sixty-four participants with MCI or dementia whose Clinical Dementia Rating was 0...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27785004/psen1-l226f-mutation-in-a-patient-with-early-onset-alzheimer-s-disease-in-korea
#11
Eva Bagyinszky, Sun Ah Park, Hyung Jun Kim, Seong Hye Choi, Seong Soo A An, Sang Yun Kim
In this study, we report a first 226leucine (Leu) mutation to phenylalanine (Phe) in (PSEN1, CTC>TTC, L226F) in Asia from a Korean early-onset Alzheimer's disease (EOAD) patient. Polymerase chain reaction (PCR)-single strand conformation polymorphism, sequencing, and in silico predictions were performed. Previously, L226F was reported in EOAD patients by Zekanowski et al and Gómez-Tortosa et al. Disease phenotypes appeared in their thirties, and family history was positive in both cases. In our patient, age of onset was similar (37 years of age), but the mutation seemed to be de novo, since no affected family member was found...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27770234/soluble-pre-fibrillar-tau-and-%C3%AE-amyloid-species-emerge-in-early-human-alzheimer-s-disease-and-track-disease-progression-and-cognitive-decline
#12
David J Koss, Glynn Jones, Anna Cranston, Heidi Gardner, Nicholas M Kanaan, Bettina Platt
Post-mortem investigations of human Alzheimer's disease (AD) have largely failed to provide unequivocal evidence in support of the original amyloid cascade hypothesis, which postulated deposition of β-amyloid (Aβ) aggregates to be the cause of a demented state as well as inductive to tau neurofibrillary tangles (NFTs). Conflicting evidence suggests, however, that Aβ plaques and NFTs, albeit to a lesser extent, are present in a substantial subset of non-demented individuals. Hence, a range of soluble tau and Aβ species has more recently been implicated as the disease-relevant toxic entities...
December 2016: Acta Neuropathologica
https://www.readbyqxmd.com/read/27732893/two-cholinesterase-inhibitors-trigger-dissimilar-effects-on-behavior-and-body-weight-in-c57bl-6-mice-the-case-of-chlorpyrifos-and-rivastigmine
#13
Pia Basaure, Fiona Peris-Sampedro, Maria Cabré, Ingrid Reverte, Maria Teresa Colomina
Cholinesterases (ChE) are common targets of organophosphate (OP) pesticides and play a critical role in the pathology of some dementias. While chlorpyrifos (CPF) remains one of the most commonly used OPs in the world, numerous investigations have reported its neurotoxic potential and highlighted behavioral disturbances upon its administration. Rivastigmine currently serves to treat Alzheimer's disease, but it may induce cholinergic overstimulation in non-demented individuals. The present investigation aimed to compare the acute and delayed effects caused by both ChE inhibitors in adult C57BL/6 male mice...
October 11, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27693131/timed-up-and-go-test-atrophy-of-medial-temporal-areas-and-cognitive-functions-in-community-dwelling-older-adults-with-normal-cognition-and-mild-cognitive-impairment
#14
Yujiro Kose, Masahiro Ikenaga, Yosuke Yamada, Kazuhiro Morimura, Noriko Takeda, Shinji Ouma, Yoshio Tsuboi, Tatsuo Yamada, Misaka Kimura, Akira Kiyonaga, Yasuki Higaki, Hiroaki Tanaka
AIM: This study aimed to ascertain if performance on the Timed Up and Go (TUG) test is associated with indicators of brain volume and cognitive functions among community-dwelling older adults with normal cognition or mild cognitive impairment. METHODS: Participants were 80 community-dwelling older adults aged 65-89years (44 men, 36 women), including 20 with mild cognitive impairment. Participants completed the TUG and a battery of cognitive assessments, including the Mini-Mental State Examination (MMSE), the Logical Memory I and II (LM-I, LM-II) subtests of the Wechsler Memory Scale-Revised; and the Trail Making Test A and B (TMT-A, TMT-B)...
September 28, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27687251/fully-automated-structural-mri-of-the-brain-in-clinical-dementia-workup
#15
Karin Persson, Geir Selbæk, Anne Brækhus, Mona Beyer, Maria Barca, Knut Engedal
BACKGROUND: The dementia syndrome has been regarded a clinical diagnosis but the focus on supplemental biomarkers is increasing. An automatic magnetic resonance imaging (MRI) volumetry method, NeuroQuant® (NQ), has been developed for use in clinical settings. PURPOSE: To evaluate the clinical usefulness of NQ in distinguishing Alzheimer's disease dementia (AD) from non-dementia and non-AD dementia. MATERIAL AND METHODS: NQ was performed in 275 patients diagnosed according to the criteria of ICD-10 for AD, vascular dementia and Parkinson's disease dementia (PDD); the Winblad criteria for mild cognitive impairment; the Lund-Manchester criteria for frontotemporal dementia; and the revised consensus criteria for Lewy body dementia (LBD)...
September 28, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27686019/neprilysin-inhibitors-emerging-therapy-for-heart-failure
#16
Anjali Tiku Owens, Susan Brozena, Mariell Jessup
Biologically active natriuretic peptides (NPs) are an integral part of cardiac homeostasis as they help to maintain sodium and fluid balance. When homeostasis is perturbed by neurohormonal activation in heart failure, levels of NPs rise in response. Neprilysin (NEP) is a naturally occuring enzyme that breaks down NPs. Scientists have recently discovered a novel pharmacologic agent that combines a NEP inhibitor and an angiotensin receptor blocker. In a large clinical trial, this new drug was found to reduce hospitalization and mortality in systolic heart failure...
January 14, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/27620855/motivating-mature-adults-to-be-physically-active
#17
Jennifer L Etnier, William B Karper, Se-Yun Park, Chia-Hao Shih, Aaron T Piepmeier, Laurie Wideman
As a population, middle-aged and older adults are not meeting national guidelines for exercise. The purpose of this study was to describe factors associated with exercise adherence in an 8-month program offered as part of a research study testing the effects of exercise on cognitive performance for persons with a family history of Alzheimer's disease (AD). After completion of the program, participants provided open-ended responses indicating their reasons for adhering to the exercise program, and they completed the Motives for Physical Activities Measure-Revised...
September 6, 2016: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/27598537/lesion-topography-and-microscopic-white-matter-tract-damage-contribute-to-cognitive-impairment-in-symptomatic-carotid-artery-disease
#18
Dewen Meng, Akram A Hosseini, Richard J Simpson, Quratulain Shaikh, Christopher R Tench, Robert A Dineen, Dorothee P Auer
Purpose To investigate associations between neuroimaging markers of cerebrovascular disease, including lesion topography and extent and severity of strategic and global cerebral tissue injury, and cognition in carotid artery disease (CAD). Materials and Methods All participants gave written informed consent to undergo brain magnetic resonance imaging and the Addenbrooke's Cognitive Examination-Revised. One hundred eight patients with symptomatic CAD but no dementia were included, and a score less than 82 represented cognitive impairment...
February 2017: Radiology
https://www.readbyqxmd.com/read/27589525/disrupted-brain-network-in-progressive-mild-cognitive-impairment-measured-by-eigenvector-centrality-mapping-is-linked-to-cognition-and-cerebrospinal-fluid-biomarkers
#19
Tiantian Qiu, Xiao Luo, Zhujing Shen, Peiyu Huang, Xiaojun Xu, Jiong Zhou, Minming Zhang
Mild cognitive impairment (MCI) is a heterogeneous condition associated with a high risk of progressing to Alzheimer's disease (AD). Although functional brain network alterations have been observed in progressive MCI (pMCI), the underlying pathological mechanisms of network alterations remain unclear. In the present study, we evaluated neuropsychological, imaging, and cerebrospinal fluid (CSF) data at baseline across a cohort of: 21 pMCI patients, 33 stable MCI (sMCI) patients, and 29 normal controls. Fast eigenvector centrality mapping (fECM) based on resting-state functional MRI (rsfMRI) was used to investigate brain network organization differences among these groups, and we further assessed its relation to cognition and AD-related pathology...
October 18, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27579672/reference-measurement-procedure-for-csf-amyloid-beta-a%C3%AE-1-42-and-the-csf-a%C3%AE-1-42-a%C3%AE-1-40-ratio-a-cross-validation-study-against-amyloid-pet
#20
Josef Pannee, Erik Portelius, Lennart Minthon, Johan Gobom, Ulf Andreasson, Henrik Zetterberg, Oskar Hansson, Kaj Blennow
A clinical diagnosis of Alzheimer's disease is currently made on the basis of results from cognitive tests in combination with medical history and general clinical evaluation, but the peptide amyloid-beta (Aβ) in cerebrospinal fluid (CSF) is increasingly used as a biomarker for amyloid pathology in clinical trials and in recently proposed revised clinical criteria for Alzheimer's disease. Recent analytical developments have resulted in mass spectrometry (MS) reference measurement procedures for absolute quantification of Aβ1-42 in CSF...
November 2016: Journal of Neurochemistry
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