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https://www.readbyqxmd.com/read/29457783/cellular-senescence-in-brain-aging-and-neurodegenerative-diseases-evidence-and-perspectives
#1
Darren J Baker, Ronald C Petersen
Along with a general decline in overall health, most chronic degenerative human diseases are inherently associated with increasing age. Age-associated cognitive impairments and neurodegenerative diseases, such as Parkinson's and Alzheimer's diseases, are potentially debilitating conditions that lack viable options for treatment, resulting in a tremendous economic and societal cost. Most high-profile clinical trials for neurodegenerative diseases have led to inefficacious results, suggesting that novel approaches to treating these pathologies are needed...
February 19, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29457143/reciprocity-in-ros-and-autophagic-signaling
#2
Daric J Wible, Shawn B Bratton
Reactive oxygen species (ROS) are important signaling molecules that mediate oxidative stress and cellular damage when improperly regulated. ROS and oxidative stress can activate autophagy, which generally serves as a cytoprotective negative feedback mechanism to selectively eliminate sources of ROS, including mitochondria and peroxisomes. In this review we describe the mechanisms by which ROS directly and indirectly activate autophagy, and conversely, how selective autophagy suppresses the formation of ROS...
February 2018: Current Opinion in Toxicology
https://www.readbyqxmd.com/read/29457053/increased-subjective-experience-of-non-target-emotions-in-patients-with-frontotemporal-dementia-and-alzheimer-s-disease
#3
Kuan-Hua Chen, Sandy J Lwi, Alice Y Hua, Claudia M Haase, Bruce L Miller, Robert W Levenson
Although laboratory procedures are designed to produce specific emotions, participants often experience mixed emotions (i.e., target and non-target emotions). We examined non-target emotions in patients with frontotemporal dementia (FTD), Alzheimer's disease (AD), other neurodegenerative diseases, and healthy controls. Participants watched film clips designed to produce three target emotions. Subjective experience of non-target emotions was assessed and emotional facial expressions were coded. Compared to patients with other neurodegenerative diseases and healthy controls, FTD patients reported more positive and negative non-target emotions, whereas AD patients reported more positive non-target emotions...
June 2017: Current Opinion in Behavioral Sciences
https://www.readbyqxmd.com/read/29456585/neuroinflammation-and-neurohormesis-in-the-pathogenesis-of-alzheimer-s-disease-and-alzheimer-linked-pathologies-modulation-by-nutritional-mushrooms
#4
REVIEW
Angela Trovato Salinaro, Manuela Pennisi, Rosanna Di Paola, Maria Scuto, Rosalia Crupi, Maria Teresa Cambria, Maria Laura Ontario, Mario Tomasello, Maurizio Uva, Luigi Maiolino, Edward J Calabrese, Salvatore Cuzzocrea, Vittorio Calabrese
Human life develops and expands not only in time and space, but also in the retrograde permanent recollection and interweaving of memories. Therefore, individual human identity depends fully on a proper access to the autobiographical memory. Such access is hindered or lost under pathological conditions such as Alzheimer's disease, including recently associated oxidant pathologies, such as ocular neural degeneration occurring in glaucoma or neurosensorial degeneration occurring in Menière's disease. Oxidative stress and altered antioxidant systems have been suggested to play a role in the aetiology of major neurodegenerative disorders, and altered expression of genes sensing oxidative stress, as well as decreased cellular stress response mechanisms could synergistically contribute to the course of these oxidant disorders...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29456521/mathematical-modeling-of-protein-misfolding-mechanisms-in-neurological-diseases-a-historical-overview
#5
REVIEW
Felix Carbonell, Yasser Iturria-Medina, Alan C Evans
Protein misfolding refers to a process where proteins become structurally abnormal and lose their specific 3-dimensional spatial configuration. The histopathological presence of misfolded protein (MP) aggregates has been associated as the primary evidence of multiple neurological diseases, including Prion diseases, Alzheimer's disease, Parkinson's disease, and Creutzfeldt-Jacob disease. However, the exact mechanisms of MP aggregation and propagation, as well as their impact in the long-term patient's clinical condition are still not well understood...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29456501/recommendations-for-the-design-of-serious-games-in-neurodegenerative-diseases
#6
Grégory Ben-Sadoun, Valeria Manera, Julian Alvarez, Guillaume Sacco, Philippe Robert
The use of Serious Games (SG) in the health domain is expanding. In the field of Neurodegenerative Diseases (ND) such as Alzheimer's Disease, SG are currently employed to provide alternative solutions for patients' treatment, stimulation, and rehabilitation. The design of SG for people with ND implies collaborations between professionals in ND and professionals in SG design. As the field is quite young, professionals specialized in both ND and SG are still rare, and recommendations for the design of SG for people with ND are still missing...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29456186/neurons-generated-by-mouse-escs-with-hippocampal-or-cortical-identity-display-distinct-projection-patterns-when-co-transplanted-in-the-adult-brain
#7
Marco Terrigno, Irene Busti, Claudia Alia, Marta Pietrasanta, Ivan Arisi, Mara D'Onofrio, Matteo Caleo, Federico Cremisi
The capability of generating neural precursor cells with distinct types of regional identity in vitro has recently opened new opportunities for cell replacement in animal models of neurodegenerative diseases. By manipulating Wnt and BMP signaling, we steered the differentiation of mouse embryonic stem cells (ESCs) toward isocortical or hippocampal molecular identity. These two types of cells showed different degrees of axonal outgrowth and targeted different regions when co-transplanted in healthy or lesioned isocortex or in hippocampus...
February 8, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29455947/the-neural-exploitation-hypothesis-and-its-implications-for-an-embodied-approach-to-language-and-cognition-insights-from-the-study-of-action-verbs-processing-and-motor-disorders-in-parkinson-s-disease
#8
REVIEW
Vittorio Gallese, Valentina Cuccio
As it is widely known, Parkinson's disease is clinically characterized by motor disorders such as the loss of voluntary movement control, including resting tremor, postural instability, and bradykinesia (Bocanegra et al., 2015; Helmich, Hallett, Deuschl, Toni, & Bloem, 2012; Liu et al., 2006; Rosin, Topka, & Dichgans, 1997). In the last years, many empirical studies (e.g., Bocanegra et al., 2015; Spadacenta et al., 2012) have also shown that the processing of action verbs is selectively impaired in patients affected by this neurodegenerative disorder...
February 2, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29455449/role-of-exosomes-derived-from-mir-133b-modified-mscs-in-an-experimental-rat-model-of-intracerebral-hemorrhage
#9
Haitao Shen, Xiyang Yao, Haiying Li, Xiang Li, Tiejun Zhang, Qing Sun, Chengyuan Ji, Gang Chen
Intracerebral hemorrhage (ICH) has poor outcomes due to high mortality and morbidity, but until now, the effective treatments remain limited. MicroRNAs (miRNAs) are vital regulators of gene expression and demonstrated to be linked to the pathogenesis of various central nervous system (CNS) diseases. Exosomes are considered as cell-to-cell communication vectors and secreted largely by mesenchymal stromal cells (MSCs). The present study investigated the role of miR-133b delivered by exosomes secreted from MSCs to brain tissues in rats after ICH...
February 17, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29454631/update-on-visual-function-and-choroidal-retinal-thickness-alterations-in-parkinson-s-disease
#10
J Obis, M Satue, R Alarcia, L E Pablo, E Garcia-Martin
Parkinson's disease (PD) is a neurodegenerative process that affects 7.5 million people around the world. Since 2004, several studies have demonstrated changes in various retinal layers in PD using optical coherence tomography (OCT). However, there are some discrepancies in the results of those studies. Some of them have correlated retinal thickness with the severity or duration of the disease, demonstrating that OCT measurements may be an innocuous and easy biomarker for PD progression. Other studies have demonstrated visual dysfunctions since early phases of the disease...
February 14, 2018: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/29454581/emerging-roles-of-microglial-cathepsins-in-neurodegenerative-disease
#11
REVIEW
Jessica R Lowry, Andis Klegeris
Alzheimer's disease (AD) is one of the leading causes of dementia, and its prevalence is expected to increase dramatically due to the aging global population. Microglia-driven neuroinflammation may contribute to the progression of AD. Microglia, the immune cells of the central nervous system (CNS), become chronically activated by the pathological proteins of AD including amyloid-β peptides (Aβ). Such adversely activated microglia secrete mediators that promote inflammation and damage neurons. Cathepsins are proteases that are expressed by all brain cell types, and most of them are found both intra- and extra-cellularly...
February 15, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29454326/predictors-of-activity-and-participation-across-neurodegenerative-conditions-a-comparison-of-people-with-motor-neurone-disease-multiple-sclerosis-and-parkinson-s-disease
#12
David Morley, Sarah Dummett, Laura Kelly, Ray Fitzpatrick, Crispin Jenkinson
BACKGROUND: Comparisons between neurological conditions have the potential to inform service providers by identifying particular areas of difficulty experienced by affected individuals. This study aimed to identify predictors of activity and participation in people with motor neurone disease (MND), people with multiple sclerosis (MS) and people with Parkinson's Disease (PD). METHODS: The Oxford Participation and Activities Questionnaire (Ox-PAQ) and Medical Outcomes Study 36-Item Short Form Survey (MOS SF-36) were administered by postal survey to 386 people with a confirmed diagnosis of MND, MS or PD...
February 17, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29454265/supplementation-of-lycopene-attenuates-lipopolysaccharide-induced-amyloidogenesis-and-cognitive-impairments-via-mediating-neuroinflammation-and-oxidative-stress
#13
Jia Wang, Lixia Li, Zhuo Wang, Yifan Cui, Xintong Tan, Tian Yuan, Qian Liu, Zhigang Liu, Xuebo Liu
Neuroinflammation is documented to be the major culprit of Alzheimer's disease. Lycopene (LYC), a fat soluble carotenoid, exhibits neuroprotective function in several neurodegenerative disorders. However, the effects of LYC to countering systemic inflammation-induced amyloidogenesis and memory deficiency remain to be elucidated. In current study, 3-month-old male C57BL/6J mice were treated with 0.03% LYC (w/w, mixed into normal chow) for 5 weeks. The mice were then treated by intraperitoneal injection of LPS (0...
February 2, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29454154/age-related-functional-changes-in-domain-specific-medial-temporal-lobe-pathways
#14
David Berron, Katja Neumann, Anne Maass, Hartmut Schütze, Klaus Fliessbach, Verena Kiven, Frank Jessen, Magdalena Sauvage, Dharshan Kumaran, Emrah Düzel
There is now converging evidence from studies in animals and humans that the medial temporal lobes (MTLs) harbor anatomically distinct processing pathways for object and scene information. Recent functional magnetic resonance imaging studies in humans suggest that this domain-specific organization may be associated with a functional preference of the anterior-lateral part of the entorhinal cortex (alErC) for objects and the posterior-medial entorhinal cortex (pmErC) for scenes. As MTL subregions are differentially affected by aging and neurodegenerative diseases, the question was raised whether aging may affect the 2 pathways differentially...
January 31, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29453961/repeat-associated-non-aug-ran-translation-and-other-molecular-mechanisms-in-fragile-x-tremor-ataxia-syndrome
#15
M Rebecca Glineburg, Peter K Todd, Nicolas Charlet-Berguerand, Chantal Sellier
Fragile X-associated tremor/ataxia syndrome (FXTAS) is a late-onset inherited neurodegenerative disorder characterized by progressive intention tremor, gait ataxia and dementia associated with mild brain atrophy. The cause of FXTAS is a premutation expansion, of 55 to 200 CGG repeats localized within the 5'UTR of FMR1. These repeats are transcribed in the sense and antisense directions into mutants RNAs, which have increased expression in FXTAS. Furthermore, CGG sense and CCG antisense expanded repeats are translated into novel proteins despite their localization in putatively non-coding regions of the transcript...
February 14, 2018: Brain Research
https://www.readbyqxmd.com/read/29453933/myt1l-induced-direct-reprogramming-of-pericytes-into-cholinergic-neurons
#16
Xing-Guang Liang, Chao Tan, Cheng-Kun Wang, Rong-Rong Tao, Yu-Jie Huang, Kui-Fen Ma, Kohji Fukunaga, Ming-Zhu Huang, Feng Han
OBJECTIVE: The cholinergic deficit is thought to underlie progressed cognitive decline in Alzheimer Disease. The lineage reprogramming of somatic cells into cholinergic neurons may provide strategies toward cell-based therapy of neurodegenerative diseases. METHODS AND RESULTS: Here, we found that a combination of neuronal transcription factors, including Ascl1, Myt1l, Brn2, Tlx3, and miR124 (5Fs) were capable of directly converting human brain vascular pericytes (HBVPs) into cholinergic neuronal cells...
February 17, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29453901/shedding-light-on-aberrant-interactions-a-review-of-modern-tools-for-studying-protein-aggregates
#17
REVIEW
Franziska Kundel, Laura Tosatto, Daniel R Whiten, David C Wirthensohn, Mathew H Horrocks, David Klenerman
The link between protein aggregation and neurodegenerative disease is well established. However, given the heterogeneity of species formed during the aggregation process, it is difficult to delineate details of the molecular events involved in generating pathological aggregates from those producing soluble monomers. As aberrant aggregates are possible pharmacological targets for the treatment of neurodegenerative diseases, the need to observe and characterise soluble oligomers has pushed traditional biophysical techniques to their limits, leading to the development of a plethora of new tools capable of detecting soluble oligomers with high precision and specificity...
February 17, 2018: FEBS Journal
https://www.readbyqxmd.com/read/29453387/structural-determinants-of-the-sine-b2-element-embedded-in-the-long-non-coding-rna-activator-of-translation-as-uchl1
#18
Peter Podbevšek, Francesca Fasolo, Carlotta Bon, Laura Cimatti, Sabine Reißer, Piero Carninci, Giovanni Bussi, Silvia Zucchelli, Janez Plavec, Stefano Gustincich
Pervasive transcription of mammalian genomes leads to a previously underestimated level of complexity in gene regulatory networks. Recently, we have identified a new functional class of natural and synthetic antisense long non-coding RNAs (lncRNA) that increases translation of partially overlapping sense mRNAs. These molecules were named SINEUPs, as they require an embedded inverted SINE B2 element for their UP-regulation of translation. Mouse AS Uchl1 is the representative member of natural SINEUPs. It was originally discovered for its role in increasing translation of Uchl1 mRNA, a gene associated with neurodegenerative diseases...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453339/a-role-for-tau-in-learning-memory-and-synaptic-plasticity
#19
Fabrizio Biundo, Dolores Del Prete, Hong Zhang, Ottavio Arancio, Luciano D'Adamio
Tau plays a pivotal role in the pathogenesis of neurodegenerative disorders: mutations in the gene encoding for tau (MAPT) are linked to Fronto-temporal Dementia (FTD) and hyper-phosphorylated aggregates of tau forming neurofibrillary tangles (NFTs) that constitute a pathological hallmark of Alzheimer disease (AD) and FTD. Accordingly, tau is a favored therapeutic target for the treatment of these diseases. Given the criticality of tau to dementia's pathogenesis and therapy, it is important to understand the physiological function of tau in the central nervous system...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452906/extracranial-arterial-wall-volume-is-increased-and-shows-relationships-with-vascular-mri-measures-in-idiopathic-parkinson-s-disease
#20
Stephen Ball, Sarah Al-Bachari, Laura M Parkes, Hedley C A Emsley, Charles N McCollum
OBJECTIVE: Idiopathic Parkinson's disease (IPD) is the second most common neurodegenerative disorder, often complicated by dementia. Cardiovascular risk factors and spontaneous cerebral emboli (SCE) are strongly associated with Alzheimer's (AD) and vascular dementia (VaD). We measured SCE in the middle cerebral artery and arterial wall volume in the extracranial arteries in patients with IPD and controls, and explored the relationships with structural and physiological MRI brain neurovascular measures...
February 10, 2018: Clinical Neurology and Neurosurgery
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