keyword
MENU ▼
Read by QxMD icon Read
search

Alzheimers monitoring

keyword
https://www.readbyqxmd.com/read/28225806/capsaicin-reduces-alzheimer-associated-tau-changes-in-the-hippocampus-of-type-2-diabetes-rats
#1
Weijie Xu, Juanhong Liu, Delin Ma, Gang Yuan, Yan Lu, Yan Yang
Type 2 diabetes (T2D) is a high-risk factor for Alzheimer's disease (AD) due to impaired insulin signaling pathway in brain. Capsaicin is a specific transient receptor potential vanilloid 1 (TRPV1) agonist which was proved to ameliorate insulin resistance. In this study, we investigated whether dietary capsaicin could reduce the risk of AD in T2D. T2D rats were fed with capsaicin-containing high fat (HF) diet for 10 consecutive days (T2D+CAP). Pair-fed T2D rats (T2D+PF) fed with the HF-diet of average dose of T2D+CAP group were included to control for the effects of reduced food intake and body weight...
2017: PloS One
https://www.readbyqxmd.com/read/28219440/tau-pet-imaging-present-and-future-directions
#2
REVIEW
Laure Saint-Aubert, Laetitia Lemoine, Konstantinos Chiotis, Antoine Leuzy, Elena Rodriguez-Vieitez, Agneta Nordberg
Abnormal aggregation of tau in the brain is a major contributing factor in various neurodegenerative diseases. The role of tau phosphorylation in the pathophysiology of tauopathies remains unclear. Consequently, it is important to be able to accurately and specifically target tau deposits in vivo in the brains of patients. The advances of molecular imaging in the recent years have now led to the recent development of promising tau-specific tracers for positron emission tomography (PET), such as THK5317, THK5351, AV-1451, and PBB3...
February 20, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28213109/screening-of-plants-used-in-the-european-traditional-medicine-to-treat-memory-disorders-for-acetylcholinesterase-inhibitory-activity-and-anti-amyloidogenic-activity
#3
Eva S Lobbens, Karina J Vissing, Lene Jorgensen, Marco van de Weert, Anna K Jäger
ETHNOPHARMACOLOGICAL RELEVANCE: Plants used in the traditional medicine of Europe to treat memory dysfunction and/or to enhance memory were investigated for activity against the underlying mechanisms of Alzheimer's disease. AIM OF THE STUDY: To investigate 35 ethanolic extracts of plants, selected using an ethnopharmacological approach, for anti-amyloidogenic activity as well as an ability to inhibit the enzymatic activity of acetylcholinesterase. MATERIALS AND METHODS: The anti-amyloidogenic activity of the extracts against amyloid beta was investigated by Thioflavin T fibrillation assays and the ability to inhibit the enzymatic activity of acetylcholinesterase was evaluated monitoring the hydrolysis of acetylthiocholine RESULTS: Under the experimental conditions investigated, extracts of two plants, Carum carvi and Olea sylvestris, inhibited amyloid beta fibrillation considerably, eight plant extracts inhibited amyloid beta fibrillation to some extent, 16 plant extracts had no effect on amyloid beta fibrillation and nine extracts accelerated fibrillation of amyloid beta...
February 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28210978/future-directions-in-imaging-neurodegeneration
#4
REVIEW
Joseph C Masdeu
Neuroimaging comprises a powerful set of instruments to diagnose various neurodegenerative disorders, clarifies their neurobiology, and monitors their treatment. Magnetic resonance imaging depicts volume changes, as well as abnormalities in functional and structural connectivity. Positron emission tomography (PET) allows for the quantification of regional cerebral metabolism, characteristically altered in Alzheimer's disease, amyotrophic lateral sclerosis, diffuse Lewy-body disease, and the frontotemporal dementias...
January 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28209520/deconstructing-empathy-neuroanatomical-dissociations-between-affect-sharing-and-prosocial-motivation-using-a-patient-lesion-model
#5
Suzanne M Shdo, Kamalini G Ranasinghe, Kelly A Gola, Clinton J Mielke, Paul V Sukhanov, Bruce L Miller, Katherine P Rankin
Affect sharing and prosocial motivation are integral parts of empathy that are conceptually and mechanistically distinct. We used a neurodegenerative disease (NDG) lesion model to more directly examine the neural correlates of these two aspects of real-world empathic responding. The study enrolled 275 participants, including 44 healthy older controls and 231 patients diagnosed with one of five neurodegenerative diseases (75 Alzheimer's disease, 58 behavioral variant frontotemporal dementia (bvFTD), 42 semantic variant primary progressive aphasia (svPPA), 28 progressive supranuclear palsy, and 28 non-fluent variant (nfvPPA)...
February 13, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28209190/the-effects-of-different-familial-alzheimer-s-disease-mutations-on-app-processing-in-vivo
#6
Steinunn Thordardottir, Anne Kinhult Ståhlbom, Ove Almkvist, Håkan Thonberg, Maria Eriksdotter, Henrik Zetterberg, Kaj Blennow, Caroline Graff
BACKGROUND: Disturbed amyloid precursor protein (APP) processing is considered to be central to the pathogenesis of Alzheimer's disease (AD). The autosomal dominant form of the disease, familial AD (FAD), may serve as a model for the sporadic form of AD. In FAD the diagnosis of AD is reliable and presymptomatic individuals carrying FAD mutations can give valuable insights into the earliest stages of the disease where therapeutic interventions are thought to be the most effective. METHODS: In the current cross-sectional study, products of APP processing (e...
February 16, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28188402/-alzheimer-s-disease-and-epilepsy
#7
R Haussmann, T Mayer, W Schrempf, M Donix
Data regarding the incidence and prevalence of epileptic seizures in Alzheimer's disease show great variability and are clinically underestimated due to their atypical symptomatology. Considering their considerable negative effects on cognition and activities of daily living, epileptic seizures need to be correctly treated. Hypotheses with respect to the pathogenetic mechanisms and associations between Alzheimer's disease and epilepsy are mostly derived from animal experiments. The causal connections are so far insufficiently understood...
February 10, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28187125/aerobic-exercise-for-alzheimer-s-disease-a-randomized-controlled-pilot-trial
#8
Jill K Morris, Eric D Vidoni, David K Johnson, Angela Van Sciver, Jonathan D Mahnken, Robyn A Honea, Heather M Wilkins, William M Brooks, Sandra A Billinger, Russell H Swerdlow, Jeffrey M Burns
BACKGROUND: There is increasing interest in the role of physical exercise as a therapeutic strategy for individuals with Alzheimer's disease (AD). We assessed the effect of 26 weeks (6 months) of a supervised aerobic exercise program on memory, executive function, functional ability and depression in early AD. METHODS AND FINDINGS: This study was a 26-week randomized controlled trial comparing the effects of 150 minutes per week of aerobic exercise vs. non-aerobic stretching and toning control intervention in individuals with early AD...
2017: PloS One
https://www.readbyqxmd.com/read/28176408/hippocampal-release-of-dopamine-and-norepinephrine-encodes-novel-contextual-information
#9
Perla Moreno-Castilla, Rodrigo Pérez-Ortega, Valeria Violante-Soria, Israela Balderas, Federico Bermúdez-Rattoni
The detection and processing of novel information encountered in our environment is crucial for proper adaptive behavior and learning. Hippocampus is a prime structure for novelty detection that receives high-level inputs including context information. It is of our interest to understand the mechanisms by which the hippocampus processes contextual information. For this, we performed in vivo microdyalisis in order to monitor extracellular changes in neurotransmitter levels during Object Location Memory (OLM), a behavioral protocol developed to evaluate contextual information processing in recognition memory...
February 8, 2017: Hippocampus
https://www.readbyqxmd.com/read/28157100/efficacy-and-safety-of-donepezil-in-chinese-patients-with-severe-alzheimer-s-disease-a-randomized-controlled-trial
#10
Jianping Jia, Cuibai Wei, Longfei Jia, Yi Tang, Junhua Liang, Aihong Zhou, Fangyu Li, Lu Shi, Rachelle S Doody
BACKGROUND: Donepezil has been used worldwide for the treatment of severe Alzheimer's disease (AD). Whether it is also appropriate for severe AD in Chinese patients remains unknown. OBJECTIVE: To determine whether donepezil is effective and tolerable for Chinese patients with severe AD. METHODS: The present study was a 24-week, multicenter, double-blind, randomized, placebo-controlled, parallel-group study conducted at 38 investigational hospitals in China...
February 1, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28154182/reduced-lipid-bilayer-thickness-regulates-the-aggregation-and-cytotoxicity-of-amyloid-%C3%AE
#11
Kyle J Korshavn, Cristina Satriano, Yuxi Lin, Rongchun Zhang, Mark Dulchavsky, Anirban Bhunia, Magdalena I Ivanova, Young-Ho Lee, Carmelo La Rosa, Mi Hee Lim, Ayyalusamy Ramamoorthy
The aggregation of amyloid-Aβ (Aβ) on lipid bilayers has been implicated as a mechanism by which Aβ exerts its toxicity in Alzheimer's disease (AD). Lipid bilayer thinning has been observed during both oxidative stress and protein aggregation in AD, but whether these pathological modifications of the bilayer correlate with Aβ misfolding is unclear. Here, we studied peptide-lipid interactions in synthetic bilayers of the short-chain lipid dilauroyl phosphatidylcholine (DLPC) as a simplified model for diseased bilayers to determine their impact on Aβ aggregate, protofibril, and fibril formation...
February 1, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28153323/in-vitro-monitoring-of-amyloid-%C3%AE-peptide-oligomerization-by-electrospray-differential-mobility-analysis-an-alternative-tool-to-evaluate-alzheimer-s-disease-drug-candidates
#12
Dimitri Brinet, François Gaie-Levrel, Vincent Delatour, Julia Kaffy, Sandrine Ongeri, Myriam Taverna
Alzheimer's disease (AD) is a neurodegenerative disorder linked to protein aggregation, like more than twenty other human pathologies. One major protein incriminated in AD is the 42-residue amyloid-β peptide (Aβ1-42) which aggregates to form neurotoxic oligomers and fibrils. While, low molecular weight oligomers have been evidenced as neurotoxic species, only scarce methods raise the challenge to monitor the beginning of the aggregation process, called oligomerization. We propose here an innovative and fast monitoring of the time-dependent Aβ1-42 oligomerization pattern by electrospray differential mobility analysis (ES-DMA)...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28152299/development-of-a-reporter-system-for-in-vivo-monitoring-of-%C3%AE-secretase-activity-in-drosophila
#13
Young Gi Hong, Seyun Roh, Donggi Paik, Sangyun Jeong
The γ-secretase complex represents an evolutionarily conserved family of transmembrane aspartyl proteases that cleave numerous type-I membrane proteins, including the β-amyloid precursor protein (APP) and the receptor Notch. All known rare mutations in APP and the γ-secretase catalytic component, presenilin, which lead to increased amyloid βpeptide production, are responsible for early-onset familial Alzheimer's disease. β-amyloid protein precursor-like (APPL) is the Drosophila ortholog of human APP. Here, we created Notch- and APPL-based Drosophila reporter systems for in vivo monitoring of γ-secretase activity...
January 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28147442/emerging-ocular-biomarkers-of-alzheimer-disease
#14
REVIEW
Peter van Wijngaarden, Xavier Hadoux, Mostafa Alwan, Stuart Keel, Mohamed Dirani
Interest in reliable biomarkers of Alzheimer disease, the leading cause of dementia, has been fuelled by challenges in diagnosing the disease and monitoring disease progression as well as the response to therapy. A range of ocular manifestations of Alzheimer disease, including retinal and lens amyloid-beta accumulation, retinal nerve fiber layer loss, and retinal vascular changes, have been proposed as potential biomarkers of the disease. Herein, we examine the evidence regarding the potential value of these ocular biomarkers of Alzheimer disease...
January 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28132667/pathogenic-ps1-phosphorylation-at-ser367
#15
Masato Maesako, Jana Horlacher, Katarzyna M Zoltowska, Ksenia V Kastanenka, Eleanna Kara, Sarah Svirsky, Laura J Keller, Xuejing Li, Bradley T Hyman, Brian J Bacskai, Oksana Berezovska
The high levels of serine (S) and threonine (T) residues within the Presenilin 1 (PS1) N-terminus and in the large hydrophilic loop region suggest that the enzymatic function of PS1/γ-secretase can be modulated by its 'phosphorylated' and 'dephosphorylated' states. However, the functional outcome of PS1 phosphorylation and its significance for Alzheimer's disease (AD) pathogenesis is poorly understood. Here, comprehensive analysis using FRET-based imaging reveals that activity-driven and Protein Kinase A-mediated PS1 phosphorylation at three domains (domain 1: T74, domain 2: S310 and S313, domain 3: S365, S366, and S367), with S367 being critical, is responsible for the PS1 pathogenic 'closed' conformation, and resulting increase in the Aβ42/40 ratio...
January 30, 2017: ELife
https://www.readbyqxmd.com/read/28131209/potential-oxidative-stress-biomarkers-of-mild-cognitive-impairment-due-to-alzheimer-disease
#16
REVIEW
Ana García-Blanco, Miguel Baquero, Máximo Vento, Esperanza Gil, Luis Bataller, Consuelo Cháfer-Pericás
The high and increasing incidence of Alzheimer Disease (AD) worldwide is a major global concern. Classical diagnosis is carried out in the dementia phase, often in the moderate stages when treatment efficacy is limited. Nowadays, early diagnosis, even in pre-dementia stages, is possible in selected cases within an appropriate clinical setting, employing cerebral spinal fluid (CSF) sample analysis and neuroimaging procedures. In spite of the accurate diagnosis achieved by novel CSF biomarkers or positron emission tomography beta-amyloid tracers, these tests are invasive and expensive...
February 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28129943/beta-site-amyloid-precursor-protein-cleaving-enzyme-1-inhibition-impairs-synaptic-plasticity-via-seizure-protein-6
#17
Kaichuan Zhu, Xianyuan Xiang, Severin Filser, Petar Marinković, Mario M Dorostkar, Sophie Crux, Ulf Neumann, Derya R Shimshek, Gerhard Rammes, Christian Haass, Stefan F Lichtenthaler, Jenny M Gunnersen, Jochen Herms
BACKGROUND: Beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) is a promising drug target for the treatment of Alzheimer's disease. Prolonged BACE1 inhibition interferes with structural and functional synaptic plasticity in mice, most likely by altering the metabolism of BACE1 substrates. Seizure protein 6 (SEZ6) is predominantly cleaved by BACE1, and Sez6 knockout mice share some phenotypes with BACE1 inhibitor-treated mice. We investigated whether SEZ6 is involved in BACE1 inhibition-induced structural and functional synaptic alterations...
December 26, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28124574/curcumin-regulates-insulin-pathways-and-glucose-metabolism-in-the-brains-of-appswe-ps1de9-mice
#18
Pengwen Wang, Caixin Su, Huili Feng, Xiaopei Chen, Yunfang Dong, Yingxue Rao, Ying Ren, Jinduo Yang, Jing Shi, Jinzhou Tian, Shucui Jiang
Recent studies have shown the therapeutic potential of curcumin in Alzheimer's disease (AD). In 2014, our lab found that curcumin reduced Aβ40, Aβ42 and Aβ-derived diffusible ligands in the mouse hippocampus, and improved learning and memory. However, the mechanisms underlying this biological effect are only partially known. There is considerable evidence in brain metabolism studies indicating that AD might be a brain-specific type of diabetes with progressive impairment of glucose utilisation and insulin signalling...
January 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28120486/a-phase-i-randomized-proof-of-clinical-mechanism-study-assessing-the-pharmacokinetics-and-pharmacodynamics-of-the-oral-pde9a-inhibitor-bi-409306-in-healthy-male-volunteers
#19
Katja Boland, Viktoria Moschetti, Chantaratsamon Dansirikul, Solen Pichereau, Lien Gheyle, Frank Runge, Heike Zimdahl-Gelling, Michael Sand
OBJECTIVE: Cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase (PDE) inhibitors are hypothesized to improve cognition in schizophrenia and Alzheimer disease by increasing cGMP levels in certain brain regions. This phase I, randomized, parallel-group, double-blind, placebo-controlled study provides proof-of-mechanism evidence for BI 409306, a novel, oral PDE9A inhibitor. METHODS: In healthy males, exposure of BI 409306 (25-, 50-, 100-, and 200-mg single dose) and placebo was assessed in plasma and cerebrospinal fluid (CSF)...
January 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28118288/mitochondrial-dynamics-changes-with-age-in-an-appsw-ps1de9-mouse-model-of-alzheimer-s-disease
#20
Lin-Lin Xu, Yang Shen, Xiao Wang, Li-Fei Wei, Ping Wang, Hui Yang, Cun-Fu Wang, Zhao-Hong Xie, Jian-Zhong Bi
Increasing research suggests that mitochondrial defects play a major role in Alzheimer's disease (AD) pathogenesis. We aimed to better understand changes in mitochondria with the development and progression of AD. We compared APPsw/PS1dE9 transgenic mice at 3, 6, 9, and 12 months old as an animal model of AD and age-matched C57BL/6 mice as controls. The learning ability and spatial memory ability of APPsw/PS1dE9 mice showed significant differences compared with controls until 9 and 12 months. Mitochondrial morphology was altered in hippocampus tissue of APPsw/PS1dE9 mice beginning from the third month...
January 21, 2017: Neuroreport
keyword
keyword
21037
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"