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https://www.readbyqxmd.com/read/29166618/ipsc-based-compound-screening-and-in%C3%A2-vitro-trials-identify-a-synergistic-anti-amyloid-%C3%AE-combination-for-alzheimer-s-disease
#1
Takayuki Kondo, Keiko Imamura, Misato Funayama, Kayoko Tsukita, Michiyo Miyake, Akira Ohta, Knut Woltjen, Masato Nakagawa, Takashi Asada, Tetsuaki Arai, Shinobu Kawakatsu, Yuishin Izumi, Ryuji Kaji, Nobuhisa Iwata, Haruhisa Inoue
In the process of drug development, in vitro studies do not always adequately predict human-specific drug responsiveness in clinical trials. Here, we applied the advantage of human iPSC-derived neurons, which offer human-specific drug responsiveness, to screen and evaluate therapeutic candidates for Alzheimer's disease (AD). Using AD patient neurons with nearly 100% purity from iPSCs, we established a robust and reproducible assay for amyloid β peptide (Aβ), a pathogenic molecule in AD, and screened a pharmaceutical compound library...
November 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/29166356/factors-related-to-different-objects-of-awareness-in-alzheimer-disease
#2
Isabel B Lacerda, Raquel L Santos, José Pedro Simões Neto, Marcia C N Dourado
Awareness of deficits is a multidimensional phenomenon described as the ability to acknowledge difficulties and impairments. We investigated whether unawareness affects distinct domains to different degrees and identified the factors related to the awareness impairment in Alzheimer Disease (AD). Using a cross-sectional design, we assessed 89 people with AD (PwAD) and their caregivers. Awareness was evaluated by scoring discrepant responses between PwAD and their caregivers across domains including cognitive functioning and health condition, functional activity impairments, emotional state, social functioning, and interpersonal relationships...
October 2017: Alzheimer Disease and Associated Disorders
https://www.readbyqxmd.com/read/29165985/nanoscale-dynamics-of-amyloid-beta-42-oligomers-as-revealed-by-high-speed-atomic-force-microscopy
#3
Siddhartha Banerjee, Zhiqiang Sun, Eric Y Hayden, David B Teplow, Yuri L Lyubchenko
Amyloid β-protein (Aβ) oligomers are emerging as potent neurotoxic species in Alzheimer's disease pathogenesis. Detailed characterization of oligomer structure and dynamics are necessary to develop oligomer-specific therapeutic agents. However, oligomers exist transiently, which complicates their structural analysis. One approach to mitigate these problems has been photochemical cross-linking of native oligomers. In these states, the oligomers can be isolated and purified for physical and chemical studies...
November 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/29165763/neuropsychological-intervention-of-minimal-cognitive-impairment-including-language-deficits
#4
Y Zhao, H Li
OBJECTIVE: Mild Cognitive Impairment (MCI) is an early dementia or discrete memory loss. The cognitive deficit in MCI impedes people's daily activities, which influences multiple aspects of thinking and acting including attention, reading, writing, reasoning, language, and judgment. This review aims to assess the outcome of various neuropsychological interventions in treating MCI. MATERIALS AND METHODS: MCI causes memory problems and is characterized by the cognitive damage that is disproportionate about individual education background and age...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29165383/a-mini-review-of-the-nadph-oxidases-in-vascular-dementia-correlation-with-noxs-and-risk-factors-for-vad
#5
REVIEW
Dong-Hee Choi, Jongmin Lee
Oxidative stress (OS) is one of the factors that cause dementia conditions such as Alzheimer's disease and vascular dementia (VaD). In the pathogenesis of VaD, OS is associated with risk factors that include increased age, hypertension, and stroke. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs) are a molecular source of reactive oxygen species (ROS). According to recent studies, inhibition of NOX activity can reduce cognitive impairment in animal models of VaD. In this article, we review the evidence linking cognitive impairment with NOX-dependent OS, including the vascular NOX and non-vascular NOX systems, in VaD...
November 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29165354/the-role-of-glucagon-like-peptide-1-glp1-in-type-3-diabetes-glp-1-controls-insulin-resistance-neuroinflammation-and-neurogenesis-in-the-brain
#6
REVIEW
Choon Sang Bae, Juhyun Song
Alzheimer's disease (AD), characterized by the aggregation of amyloid-β (Aβ) protein and neuroinflammation, is the most common neurodegenerative disease globally. Previous studies have reported that some AD patients show impaired glucose utilization in brain, leading to cognitive decline. Recently, diabetes-induced dementia has been called "type 3 diabetes", based on features in common with those of type 2 diabetes and the progression of AD. Impaired glucose uptake and insulin resistance in the brain are important issues in type 3 diabetes, because these problems ultimately aggravate memory dysfunction in the brain...
November 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29165249/alzheimer-s-disease-evolution-of-research-diagnostic-criteria
#7
EDITORIAL
The Lancet Neurology
No abstract text is available yet for this article.
December 2017: Lancet Neurology
https://www.readbyqxmd.com/read/29165100/phytochemicals-formulated-as-nanoparticles-inventions-recent-patents-and-future-prospects
#8
Namdeo Jadhav, Sameer Nadaf, Dipali Lohar, Pravin Ghagare, Trupti Powar
BACKGROUND: The quest to improve the therapeutic effectiveness of herbal drugs has driven rigorously the pharmaceutical research towards development of herbal nanoparticles. Till date, various approaches have been adopted for the design of herbal nanoparticles. METHODS: We carried out an organized search of bibliographic databases consisting of an ample number of published abstracts and research articles using a focused review questionaries and insertion/omission criteria...
November 19, 2017: Recent Patents on Drug Delivery & Formulation
https://www.readbyqxmd.com/read/29165085/a-speech-recognition-based-solution-for-the-automatic-detection-of-mild-cognitive-impairment-from-spontaneous-speech
#9
Laszlo Toth, Ildiko Hoffmann, Gabor Gosztolya, Veronika Vincze, Greta Szatloczki, Zoltan Banreti, Magdolna Pakaski, Janos Kalman
BACKGROUND: Even today the reliable diagnosis of the prodromal stages of Alzheimer's disease (AD) remains a great challenge. Our research focuses on the earliest detectable indicators of cognitive decline in mild cognitive impairment (MCI). Since the presence of language impairment has been reported even in the mild stage of AD, the aim of this study is to develop a sensitive neuropsychological screening method which is based on the analysis of spontaneous speech production during performing a memory task...
November 20, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/29165084/advances-on-automatic-speech-analysis-for-early-detection-of-alzheimer-disease-a-non-linear-multi-task-approach
#10
K Lopez-de-Ipina, U Martinez-de-Lizarduy, P M Calvo, Jiri Mekyska, B Beitia, N Barroso, A Estanga, M Tainta, M Ecay-Torres
Nowadays proper detection of cognitive impairment has become a challenge for the scientific community. Alzheimer's Disease (AD), the most common cause of dementia, has a high prevalence that is increasing at a fast pace towards epidemic level. In the not-so-distant future this fact could have a dramatic social and economic impact. In this scenario, an early and accurate diagnosis of AD could help to decrease its effects on patients, relatives and society. Over the last decades there have been useful advances not only in classic assessment techniques, but also in novel non-invasive screening methodologies...
November 20, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/29165083/subjective-spatial-navigation-complaints-a-frequent-symptom-reported-by-patients-with-subjective-cognitive-decline-mild-cognitive-impairment-and-alzheimer-s-disease
#11
Cerman Jiri, Andel Ross, Laczo Jan, Vyhnalek Martin, Nedelska Zuzana, Mokrisova Ivana, Sheardova Katerina, Hort Jakub
BACKGROUND: Great effort has been put into developing simple and feasible tools capable to detect Alzheimer's disease (AD) in its early clinical stage. Spatial navigation impairment occurs very early in AD and is detectable even in the stage of mild cognitive impairment (MCI). OBJECTIVE: The aim was to describe the frequency of self-reported spatial navigation complaints in patients with subjective cognitive decline (SCD), amnestic and non-amnestic MCI (aMCI, naMCI) and AD dementia and to assess whether a simple questionnaire based on these complaints may be used to detect early AD...
November 20, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/29165082/easy-screening-for-mild-alzheimer-s-disease-and-mild-cognitive-impairment-from-elderly-speech
#12
Shohei Kato, Akira Homma, Takuto Sakuma
OBJECTIVE: This study presents a novel approach for early detection of cognitive impairment in the elderly. The approach incorporates the use of speech sound analysis, multivariate statistics, and data-mining techniques. We have developed a speech prosody-based cognitive impairment rating (SPCIR) that can distinguish between cognitively normal controls and elderly people with mild Alzheimer's disease (mAD) or mild cognitive impairment (MCI) using prosodic signals extracted from elderly speech while administering a questionnaire...
November 20, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/29165066/dysregulated-pathway-identification-of-alzheimer-s-disease-based-on-internal-correlation-analysis-of-genes-and-pathways
#13
Wei Kong, Xiaoyang Mou, Benteng Di, Jin Deng, Ruxing Zhong, Shuaiqun Wang
Dysregulated pathway identification is an important task which can gain insight into the underlying biological processes of disease. Current pathway-identification methods focus on a set of co-expression genes and single pathways and ignore the correlation between genes and pathways. The method proposed in this study, takes into account the internal correlations not only between genes but also pathways to identifying dysregulated pathways related to Alzheimer's disease (AD), the most common form of dementia...
November 20, 2017: Combinatorial Chemistry & High Throughput Screening
https://www.readbyqxmd.com/read/29164798/regionally-specific-changes-in-the-hippocampal-circuitry-accompany-progression-of-cerebrospinal-fluid-biomarkers-in-preclinical-alzheimer-s-disease
#14
Christine L Tardif, Gabriel A Devenyi, Robert S C Amaral, Sandra Pelleieux, Judes Poirier, Pedro Rosa-Neto, John Breitner, M Mallar Chakravarty
Neuropathological and in vivo brain imaging studies agree that the cornu ammonis 1 and subiculum subfields of the hippocampus are most vulnerable to atrophy in the prodromal phases of Alzheimer's disease (AD). However, there has been limited investigation of the structural integrity of the components of the hippocampal circuit, including subfields and extra-hippocampal white matter structure, in relation to the progression of well-accepted cerebrospinal fluid (CSF) biomarkers of AD, amyloid-β 1-42 (Aβ) and total-tau (tau)...
November 21, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29164613/calmodulin-like-skin-protein-protects-against-spatial-learning-impairment-in-a-mouse-model-of-alzheimer-disease
#15
Shinya Kusakari, Mikiro Nawa, Katsuko Sudo, Masaaki Matsuoka
Humanin and calmodulin-like skin protein (CLSP) inhibits Alzheimer disease (AD)-related neuronal cell death via the heterotrimeric humanin receptor in vitro. It has been suggested that CLSP is a central agonist of the heterotrimeric humanin receptor in vivo. To investigate the role of CLSP in the AD pathogenesis in vivo, we generated mouse CLSP-1 transgenic mice, crossed them with the APPswe/PSEN1dE9 mice, a model mouse of AD, and examined the effect of CLSP overexpression on the pathological phenotype of the AD mouse model...
November 21, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29164610/shared-pathological-pathways-of-alzheimer-s-disease-with-specific-comorbidities-current-perspectives-and-interventions
#16
REVIEW
Christiane M Nday, Despoina Eleftheriadou, Graham Jackson
Alzheimer's disease (AD) belongs to one of the most multifactorial, complex and heterogeneous morbidity-leading disorders. Despite the extensive research in the field, AD pathogenesis is still at some extend obscure. Mechanisms linking AD with certain comorbidities, namely diabetes mellitus, obesity and dyslipidemia, are increasingly gaining importance, mainly due to their potential role in promoting AD development and exacerbation. Their exact cognitive impairment trajectories, however, remain to be fully elucidated...
November 21, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29164603/18f-pet-with-florbetapir-for-the-early-diagnosis-of-alzheimer-s-disease-dementia-and-other-dementias-in-people-with-mild-cognitive-impairment-mci
#17
REVIEW
Gabriel Martínez, Robin Wm Vernooij, Paulina Fuentes Padilla, Javier Zamora, Xavier Bonfill Cosp, Leon Flicker
BACKGROUND: (18)F-florbetapir uptake by brain tissue measured by positron emission tomography (PET) is accepted by regulatory agencies like the Food and Drug Administration (FDA) and the European Medicine Agencies (EMA) for assessing amyloid load in people with dementia. Its added value is mainly demonstrated by excluding Alzheimer's pathology in an established dementia diagnosis. However, the National Institute on Aging and Alzheimer's Association (NIA-AA) revised the diagnostic criteria for Alzheimer's disease and confidence in the diagnosis of mild cognitive impairment (MCI) due to Alzheimer's disease may be increased when using amyloid biomarkers tests like (18)F-florbetapir...
November 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29164602/18f-pet-with-flutemetamol-for-the-early-diagnosis-of-alzheimer-s-disease-dementia-and-other-dementias-in-people-with-mild-cognitive-impairment-mci
#18
REVIEW
Gabriel Martínez, Robin Wm Vernooij, Paulina Fuentes Padilla, Javier Zamora, Leon Flicker, Xavier Bonfill Cosp
BACKGROUND: (18)F-flutemetamol uptake by brain tissue, measured by positron emission tomography (PET), is accepted by regulatory agencies like the Food and Drug Administration (FDA) and the European Medicine Agencies (EMA) for assessing amyloid load in people with dementia. Its added value is mainly demonstrated by excluding Alzheimer's pathology in an established dementia diagnosis. However, the National Institute on Aging and Alzheimer's Association (NIA-AA) revised the diagnostic criteria for Alzheimer's disease and the confidence in the diagnosis of mild cognitive impairment (MCI) due to Alzheimer's disease may be increased when using some amyloid biomarkers tests like (18)F-flutemetamol...
November 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29164600/18f-pet-with-florbetaben-for-the-early-diagnosis-of-alzheimer-s-disease-dementia-and-other-dementias-in-people-with-mild-cognitive-impairment-mci
#19
REVIEW
Gabriel Martínez, Robin Wm Vernooij, Paulina Fuentes Padilla, Javier Zamora, Leon Flicker, Xavier Bonfill Cosp
BACKGROUND: (18)F-florbetaben uptake by brain tissue, measured by positron emission tomography (PET), is accepted by regulatory agencies like the Food and Drug Administration (FDA) and the European Medicine Agencies (EMA) for assessing amyloid load in people with dementia. Its added value is mainly demonstrated by excluding Alzheimer's pathology in an established dementia diagnosis. However, the National Institute on Aging and Alzheimer's Association (NIA-AA) revised the diagnostic criteria for Alzheimer's disease and confidence in the diagnosis of mild cognitive impairment (MCI) due to Alzheimer's disease may be increased when using some amyloid biomarkers tests like (18)F-florbetaben...
November 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29164499/cognitive-disparities-the-impact-of-the-great-depression-and-cumulative-inequality-on-later-life-cognitive-function
#20
Jo Mhairi Hale
Population aging has driven a spate of recent research on later-life cognitive function. Greater longevity increases the lifetime risk of memory diseases that compromise the cognitive abilities vital to well-being. Alzheimer's disease, thought to be the most common underlying pathology for elders' cognitive dysfunction (Willis and Hakim 2013), is already the sixth leading cause of death in the United States (Alzheimer's Association 2016). Understanding social determinants of pathological cognitive decline is key to crafting interventions, but evidence is inconclusive for how social factors interact over the life course to affect cognitive function...
November 21, 2017: Demography
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