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https://www.readbyqxmd.com/read/29151087/ganser-syndrome
#1
Sebastian Dieguez
Ganser's syndrome is a rare and controversial condition, whose main and most striking feature is the production of approximate answers (or near misses) to very simple questions. For instance, asked how many legs a horse has, Ganser patients will reply "5", and answers to plain arithmetic questions will likewise be wrong, but only slightly off the mark (e.g., 2 + 2 = 3). This symptom was originally described by Sigbert Ganser in 1897 in prisoners on remand and labeled Vorbeigehen ("to pass by"), although the term Vorbeireden ("to talk beside the point") is also frequently used...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29150540/increased-florbetapir-binding-in-the-temporal-neocortex-from-age-20-to-60-years
#2
Julie Gonneaud, Eider M Arenaza-Urquijo, Florence Mézenge, Brigitte Landeau, Malo Gaubert, Alexandre Bejanin, Robin de Flores, Miranka Wirth, Clémence Tomadesso, Géraldine Poisnel, Ahmed Abbas, Béatrice Desgranges, Gaël Chételat
OBJECTIVE: To improve our understanding of early β-amyloid (Aβ) accumulation processes using florbetapir-PET scan in 20- to 60-year-old individuals. METHODS: Seventy-six cognitively normal individuals aged 20 to 60 years, 57 cognitively normal older individuals (61-84 years old), and 70 patients with mild cognitive impairment or probable Alzheimer disease (AD) underwent a florbetapir-PET scan. Images were spatially normalized and scaled using the whole cerebellum...
November 17, 2017: Neurology
https://www.readbyqxmd.com/read/29148336/predictors-of-medication-adherence-in-the-elderly-the-role-of-mental-health
#3
Jo E Rodgers, Emily M Thudium, Hadi Beyhaghi, Carla A Sueta, Khalid A Alburikan, Anna M Kucharska-Newton, Patricia P Chang, Sally C Stearns
The aging population routinely has comorbid conditions requiring complicated medication regimens, yet nonadherence can preclude optimal outcomes. This study explored the association of adherence in the elderly with demographic, socioeconomic, and disease burden measures. Data were from the fifth visit (2011-2013) for 6,538 participants in the Atherosclerosis Risk in Communities Study, conducted in four communities. The Morisky-Green-Levine Scale measured self-reported adherence. Forty percent of respondents indicated some nonadherence, primarily due to poor memory...
March 1, 2017: Medical Care Research and Review: MCRR
https://www.readbyqxmd.com/read/29147068/the-italian-version-of-the-five-word-test-a-simple-diagnostic-test-for-dementia-due-to-alzheimer-s-disease-in-routine-clinical-practice
#4
Luca Rozzini, Anna Ceraso, Marina Zanetti, Silvia Pelizzari, Evita Tomasoni, Vivian Accardo, Alessandro Padovani
Background: The five-word test (FWT) is a neuropsychological tool (derived from the Grober and Buschke paradigm), measuring hippocampal memory trace consolidation. The study aimed to validate the test for the Italian language and to verify its ability to discriminate patients affected by mild cognitive impairment and dementia due to Alzheimer's disease from healthy matches. Methods: 217 subjects (127 controls, 47 MCI due to AD, and 43 AD) underwent neuropsychological evaluation...
2017: Behavioural Neurology
https://www.readbyqxmd.com/read/29146478/diacylglycerols-as-biomarkers-of-sustained-immune-activation-in-proteinopathies-associated-with-dementia
#5
REVIEW
Paul L Wood, John E Cebak, Randall L Woltjer
Cognitive decline is a devastating clinical condition, heavily correlated with age progression. In the cases of Alzheimer's disease, Parkinson's disease, and Lewy body disease, the common neuropathologies are proteinopathies and neuroinflammation. Herein, we review current lipidomics findings and conclude that brain and circulating diacylglycerols represent biomarkers of this ongoing sustained immune response, presumably involving microglia. We further hypothesize that a logical next step will be to evaluate biomarkers of immune activation in a cohort of patients with Mild Cognitive Impairment (MCI) and subsequently attempt to provide therapeutic intervention with anti-inflammatory therapy in MCI patients with immune activation...
November 13, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29145738/development-of-a-psychosocial-group-intervention-for-individuals-with-mild-cognitive-impairment-innovative-practice
#6
Karen Barton, Ian Johnson, Amy Mountford
A diagnosis of mild cognitive impairment is associated with an increase in anxiety and depression and a decrease in psychological well-being. Despite this, individuals with mild cognitive impairment may not receive the appropriate support needed to manage the emotional and practical elements of their diagnosis. A psychosocial group intervention based on the 'Recovery Model' was developed in order to meet these needs. Outcome data from a trial of this group intervention indicated it was successful in meeting its aims...
January 1, 2017: Dementia
https://www.readbyqxmd.com/read/29142143/dha-supplementation-improves-cognitive-function-via-enhancing-a%C3%AE-mediated-autophagy-in-chinese-elderly-with-mild-cognitive-impairment-a-randomised-placebo-controlled-trial
#7
Yan-Ping Zhang, Yinyin Lou, Jing Hu, Rujuan Miao, Fei Ma
BACKGROUND: Higher docosahexaenoic acid (DHA) intake is inversely correlated with relative risk of Alzheimer's disease. The potential benefits of DHA supplementation in people with mild cognitive impairment (MCI) have not been fully examined. OBJECTIVE: Our study aimed to assess the effect of a 24-month DHA supplementation on cognitive function and amyloid beta (Aβ)-mediated autophagy in elderly subjects with MCI. METHODS: This was a randomised, double-blind, placebo-controlled trial in Tianjin, China...
November 15, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29141977/vitamins-associated-with-brain-aging-mild-cognitive-impairment-and-alzheimer-disease-biomarkers-epidemiological-and-experimental-evidence-plausible-mechanisms-and-knowledge-gaps
#8
REVIEW
Michael Fenech
The key to preventing brain aging, mild cognitive impairment (MCI), and Alzheimer disease (AD) via vitamin intake is first to understand molecular mechanisms, then to deduce relevant biomarkers, and subsequently to test the level of evidence for the impact of vitamins in the relevant pathways and their modulation of dementia risk. This narrative review infers information on mechanisms from gene and metabolic defects associated with MCI and AD, and assesses the role of vitamins using recent results from animal and human studies...
November 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/29141548/cognitive-training-in-patients-with-alzheimer-s-disease-findings-of-a-12-month-randomized-controlled-trial
#9
Alessandro Trebbastoni, Letizia Imbriano, Livia Podda, Lidia Rendace, Maria Luisa Sacchetti, Alessandra Campanelli, Fabrizia D Antonio, Carlo de Lena
BACKGROUND: Cognitive training (CT) is a non-pharmacological intervention based on a set of tasks that reflect specific cognitive functions. CT is aimed at improving cognition in patients with cognitive impairment, though no definitive conclusions have yet been drawn on its efficacy in Alzheimer's disease (AD). OBJECTIVE: To assess the effectiveness of a CT program designed to improve cognition in AD patients. METHOD: This is a randomized, controlled, single-blind, longitudinal trial with a no-treatment control condition in mild-to-moderate AD...
November 12, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/29141449/decisions-and-attitudes-regarding-participation-and-proxy-in-clinical-trials-among-patients-with-impaired-cognitive-function
#10
S Stormoen, I M Tallberg, O Almkvist, M Eriksdotter, E Sundström
Background Medical decision-making capacity is impaired in Alzheimer's disease and mild cognitive impairment. Medical decision-making capacity depends on many different cognitive functions and varies due to situation and cognitive, social, and emotional status of the patient. Our aim was to analyze dementia patients' capacity to estimate risks and benefits in different clinical trials and determine how cognitive decline affects their attitude toward possible participation and proxy consent. Methods Groups: Alzheimer's disease (n = 20), mild cognitive impairment (n = 21) and healthy controls (n = 33)...
January 1, 2017: Dementia
https://www.readbyqxmd.com/read/29141280/subjective-cognitive-complaints-and-objective-cognitive-impairment-in-parkinson-s-disease
#11
Jin Yong Hong, Yoonju Lee, Mun Kyung Sunwoo, Young H Sohn, Phil Hyu Lee
BACKGROUND AND PURPOSE: Subjective cognitive complaints (SCCs) are very common in patients with Parkinson's disease (PD). However, the relationship between SCCs and objective cognitive impairment is still unclear. This study aimed to determine whether SCCs are correlated with objective cognitive performance in patients with PD. METHODS: Totals of 148 cognitively normal patients, 71 patients with mild cognitive impairment (MCI), and 31 demented patients were recruited consecutively from a movement-disorders clinic...
October 31, 2017: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/29140858/computerized-cognitive-testing-in-primary-care-a-qualitative-study
#12
Geneva Millett, Gary Naglie, Ross Upshur, Liisa Jaakkimainen, Jocelyn Charles, Mary C Tierney
Computerized cognitive assessment tools may facilitate early identification of dementia in the primary care setting. We investigated primary care physicians' (PCPs') views on advantages and disadvantages of computerized testing based on their experience with the Computer Assessment of Mild Cognitive Impairment (CAMCI). Over a 2-month period, 259 patients, 65 years and older, from the family practice of 13 PCPs completed the CAMCI. Twelve PCPs participated in an individual interview. Generally, PCPs felt that the relationship between them and their patients helped facilitate cognitive testing; however, they thought available paper tests were time consuming and not sufficiently informative...
November 14, 2017: Alzheimer Disease and Associated Disorders
https://www.readbyqxmd.com/read/29138080/muscarinic-receptor-subtype-distribution-in-the-central-nervous-system-and-relevance-to-aging-and-alzheimer-s-disease
#13
REVIEW
E P Lebois, C Thorn, J R Edgerton, M Popiolek, S Xi
Muscarinic acetylcholine receptors (mAChRs) are G proteincoupled receptors (GPCRs) that mediate the metabotropic actions of acetylcholine (ACh). There are five subtypes of mAChR, M1 - M5, which are expressed throughout the central nervous system (CNS) on numerous cell types and represent promising treatment targets for a number of different diseases, disorders, and conditions of the CNS. Although the present review will focus on Alzheimer's disease (AD) and amnestic mild cognitive impairment (aMCI), a number of conditions such as Parkinson's disease (PD), schizophrenia, and others represent significant unmet medical needs for which selective muscarinic agents could offer therapeutic benefits...
November 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29135998/multivariate-regression-analysis-of-structural-mri-connectivity-matrices-in-alzheimer-s-disease
#14
Javier Rasero, Nicola Amoroso, Marianna La Rocca, Sabina Tangaro, Roberto Bellotti, Sebastiano Stramaglia
Alzheimer's disease (AD) is the most common form of dementia among older people and increasing longevity ensures its prevalence will rise even further. Whether AD originates by disconnecting a localized brain area and propagates to the rest of the brain across disease-severity progression is a question with an unknown answer. An important related challenge is to predict whether a given subject, with a mild cognitive impairment (MCI), will convert or not to AD. Here, our aim is to characterize the structural connectivity pattern of MCI and AD subjects using the multivariate distance matrix regression (MDMR) analysis, and to compare it to those of healthy subjects...
2017: PloS One
https://www.readbyqxmd.com/read/29135331/imaging-microglial-activation-and-amyloid-burden-in-amnestic-mild-cognitive-impairment
#15
Dunja Knezevic, Nicolaas Paul Lg Verhoeff, Sina Hafizi, Antonio P Strafella, Ariel Graff-Guerrero, Tarek Rajji, Bruce G Pollock, Sylvain Houle, Pablo M Rusjan, Romina Mizrahi
Amnestic mild cognitive impairment (aMCI) is defined as a transitional state between normal aging and Alzheimer's disease (AD). Given the replicated finding of increased microglial activation in AD, we sought to investigate whether microglial activation is also elevated in aMCI and whether it is related to amyloid beta (Aβ) burden in-vivo . Eleven aMCI participants and 14 healthy volunteers completed positron emission tomography (PET) scans with [(18)F]-FEPPA and [(11)C]-PIB. Given the known sensitivity in affinity of second-generation TSPO radioligands, participants were genotyped for the TSPO polymorphism and only high-affinity binders were included...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29135021/diagnostic-accuracy-of-the-chinese-version-of-the-trail-making-test-for-screening-cognitive-impairment
#16
Mingqing Wei, Jing Shi, Ting Li, Jingnian Ni, Xuekai Zhang, Yumeng Li, Shenghua Kang, Fuyun Ma, Hengge Xie, Bin Qin, Dongsheng Fan, Liping Zhang, Yongyan Wang, Jinzhou Tian
BACKGROUND/OBJECTIVES: The Trail-Making Test (TMT), which is commonly used to measure executive function, consists of two components (TMT-A and TMTB). There is a lack of normative TMT data for Chinese elderly adults. This study aimed to evaluate the validity of the TMT in screening for cognitive impairment. DESIGN: 2,294 Chinese-speaking adults aged 50 to 85: 1,026 with normal cognition (NC), 462 with mild cognitive impairment (MCI), 108 with Alzheimer's disease (AD), 113 with vascular mild cognitive impairment (VaMCI), 121 with vascular dementia (VaD), 282 with uncertain types of dementia, and 15 with mixed dementia...
November 14, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29134465/current-role-for-biomarkers-in-clinical-diagnosis-of-alzheimer-disease-and-frontotemporal-dementia
#17
REVIEW
Nasim Sheikh-Bahaei, Seyed Ahmad Sajjadi, Aimee L Pierce
Purpose of review Alzheimer's disease (AD) and frontotemporal dementia can often be diagnosed accurately with careful clinical history, cognitive testing, neurological examination, and structural brain MRI. However, there are certain circumstances wherein detection of specific biomarkers of neurodegeneration or underlying AD pathology will impact the clinical diagnosis or treatment plan. We will review the currently available biomarkers for AD and frontotemporal dementia (FTD) and discuss their clinical importance...
November 14, 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/29133432/locus-coeruleus-ablation-exacerbates-cognitive-deficits-neuropathology-and-lethality-in-p301s-tau-transgenic-mice
#18
Termpanit Chalermpalanupap, Jason P Schroeder, Jacki M Rorabaugh, L Cameron Liles, James J Lah, Allan I Levey, David Weinshenker
The brainstem locus coeruleus (LC) supplies norepinephrine (NE) to the forebrain and degenerates in Alzheimer's disease (AD). Loss of LC neurons is correlated with increased severity of other AD hallmarks including β-amyloid (Aβ) plaques, tau neurofibrillary tangles and cognitive deficits, suggesting that it contributes to the disease progression. Lesions of the LC in amyloid-based transgenic mouse models of AD exacerbate Aβ pathology, neuroinflammation, and cognitive deficits, but it is unknown how the loss of LC neurons affects tau-mediated pathology or behavioral abnormalities...
November 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29132765/cortical-thinning-correlates-of-changes-in-visuospatial-and-visuoperceptual-performance-in-parkinson-s-disease-a-4-year-follow-up
#19
A I Garcia-Diaz, B Segura, H C Baggio, C Uribe, A Campabadal, A Abos, M J Marti, F Valldeoriola, Y Compta, N Bargallo, C Junque
BACKGROUND: Growing evidence highlights the relevance of posterior cortically-based cognitive deficits in Parkinson's disease (PD) as possible biomarkers of the evolution to dementia. Cross-sectional correlational studies have established a relationship between the degree of atrophy in posterior brain regions and visuospatial and visuoperceptual (VS/VP) impairment. The aim of this study is to address the progressive cortical thinning correlates of VS/VP performance in PD. METHODS: Forty-four PD patients and 20 matched healthy subjects were included in this study and followed for 4 years...
November 7, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29129610/the-effect-of-rat-strain-and-stress-exposure-on-performance-in-touchscreen-tasks
#20
Lena-Sophie Martis, Simone Krog, Thao Phuong Tran, Elena Bouzinova, Sofie Laage Christiansen, Arne Møller, Megan C Holmes, Ove Wiborg
Patients suffering from depression-associated cognitive impairments often recover incompletely after remission from the core symptoms of depression (lack of energy, depressed mood and anhedonia). This study aimed to set the basis for clinically relevant testing of cognitive impairments in a preclinical model of depression. Hence, we used the chronic mild stress (CMS) model of depression, which provokes the core symptom of anhedonia in a fraction of the stress exposed animals, while others remain resilient, and assessed the entire CMS groups' cognitive performance on the touchscreen operant platform...
November 9, 2017: Physiology & Behavior
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