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Progress in Neurobiology

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https://www.readbyqxmd.com/read/28802884/astrocytes-and-endoplasmic-reticulum-stress-a-bridge-between-obesity-and-neurodegenerative-diseases
#1
REVIEW
Cynthia A Martin-Jiménez, Ángela García-Vega, Ricardo Cabezas, Gjumrakch Aliev, Valentina Echeverria, Janneth González, George E Barreto
Endoplasmic reticulum (ER) is a subcellular organelle involved in protein folding and processing. ER stress constitutes a cellular process characterized by accumulation of misfolded proteins, impaired lipid metabolism and induction of inflammatory responses. ER stress has been suggested to be involved in several human pathologies, including neurodegenerative diseases and obesity. Different studies have shown that both neurodegenerative diseases and obesity trigger similar cellular responses to ER stress. Moreover, both diseases are assessed in astrocytes as evidences suggest these cells as key regulators of brain homeostasis...
August 9, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28782588/impact-of-aging-immune-system-on-neurodegeneration-and-potential-immunotherapies
#2
REVIEW
Zhanfeng Liang, Yang Zhao, Linhui Ruan, Linnan Zhu, Kunlin Jin, Qichuan Zhuge, Dong-Ming Su, Yong Zhao
The interaction between the nervous and immune systems during aging is an area of avid interest, but many aspects remain unclear. This is due, not only to the complexity of the aging process, but also to a mutual dependency and reciprocal causation of alterations and diseases between both the nervous and immune systems. Aging of the brain drives whole body systemic aging, including aging-related changes of the immune system. In turn, the immune system aging, particularly immunosenescence and T cell aging initiated by thymic involution that are sources of chronic inflammation in the elderly (termed inflammaging), potentially induces brain aging and memory loss in a reciprocal manner...
August 4, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28779869/functional-integration-of-complex-mirna-networks-in-central-and-peripheral-lesion-and-axonal-regeneration
#3
REVIEW
M Ghibaudi, M Boido, A Vercelli
New players are emerging in the game of peripheral and central nervous system injury since their physiopathological mechanisms remain partially elusive. These mechanisms are characterized by several molecules whose activation and/or modification following a trauma is often controlled at transcriptional level. In this scenario, microRNAs (miRNAs/miRs) have been identified as main actors in coordinating important molecular pathways in nerve or spinal cord injury (SCI). miRNAs are small non-coding RNAs whose functionality at network level is now emerging as a new level of complexity...
August 2, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28743465/nanomaterial-applications-for-neurological-diseases-and-central-nervous-system-injury
#4
REVIEW
Lijie Huang, Jiangnan Hu, Shengwei Huang, Brian Wang, Felix Siaw-Debrah, Mark Nyanzu, Yu Zhang, Qichuan Zhuge
The effectiveness of noninvasive treatment for neurological disease is generally limited by the poor entry of therapeutic agents into the central nervous system (CNS). Most CNS drugs cannot permeate into the brain parenchyma because of the blood-brain barrier thus, overcoming this problem has become one of the most significant challenges in the development of neurological therapeutics. Nanotechnology has emerged as an innovative alternative for treating neurological diseases. In fact, rapid advances in nanotechnology have provided promising solutions to this challenge...
July 22, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28743464/stem-cell-therapy-for-abrogating-stroke-induced-neuroinflammation-and-relevant-secondary-cell-death-mechanisms
#5
REVIEW
Connor Stonesifer, Sydney Corey, Shaila Ghanekar, Zachary Diamandis, Sandra A Acosta, Cesar V Borlongan
Ischemic stroke is a leading cause of death worldwide. A key secondary cell death mechanism mediating neurological damage following the initial episode of ischemic stroke is the upregulation of endogenous neuroinflammatory processes to levels that destroy hypoxic tissue local to the area of insult, induce apoptosis, and initiate a feedback loop of inflammatory cascades that can expand the region of damage. Stem cell therapy has emerged as an experimental treatment for stroke, and accumulating evidence supports the therapeutic efficacy of stem cells to abrogate stroke-induced inflammation...
July 22, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28734837/neural-reuse-of-action-perception-circuits-for-language-concepts-and-communication
#6
REVIEW
Friedemann Pulvermüller
Neurocognitive and neurolinguistics theories make explicit statements relating specialized cognitive and linguistic processes to specific brain loci. These linking hypotheses are in need of neurobiological explanation. Recent mathematical models of human language mechanisms constrained by fundamental neuroscience principles and established knowledge about comparative neuroanatomy offer explanations for where, when and how language is processed in the human brain. In these models, network structure and connectivity along with action- and perception-induced correlation of neuronal activity co-determine neurocognitive mechanisms...
July 19, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28734836/criticality-in-the-brain-a-synthesis-of-neurobiology-models-and-cognition
#7
REVIEW
Luca Cocchi, Leonardo L Gollo, Andrew Zalesky, Michael Breakspear
Cognitive function requires the coordination of neural activity across many scales, from neurons and circuits to large-scale networks. As such, it is unlikely that an explanatory framework focused upon any single scale will yield a comprehensive theory of brain activity and cognitive function. Modelling and analysis methods for neuroscience should aim to accommodate multiscale phenomena. Emerging research now suggests that multi-scale processes in the brain arise from so-called critical phenomena that occur very broadly in the natural world...
July 19, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28634086/towards-building-a-more-complex-view-of-the-lateral-geniculate-nucleus-recent-advances-in-understanding-its-role
#8
REVIEW
Masoud Ghodrati, Seyed-Mahdi Khaligh-Razavi, Sidney R Lehky
The lateral geniculate nucleus (LGN) has often been treated in the past as a linear filter that adds little to retinal processing of visual inputs. Here we review anatomical, neurophysiological, brain imaging, and modeling studies that have in recent years built up a much more complex view of LGN. These include effects related to nonlinear dendritic processing, cortical feedback, synchrony and oscillations across LGN populations, as well as involvement of LGN in higher level cognitive processing. Although recent studies have provided valuable insights into early visual processing including the role of LGN, a unified model of LGN responses to real-world objects has not yet been developed...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28587768/small-things-matter-implications-of-app-intracellular-domain-aicd-nuclear-signaling-in-the-progression-and-pathogenesis-of-alzheimer-s-disease
#9
REVIEW
Hassan Bukhari, Annika Glotzbach, Katharina Kolbe, Gregor Leonhardt, Christina Loosse, Thorsten Müller
Alzheimer's disease (AD) is the most common neurodegenerative disease with tens of millions of people affected worldwide. The pathogenesis is still poorly understood and various therapeutical approaches targeting the amyloid β (Aβ) peptide, a product of the amyloidogenic cleavage of the amyloid precursor protein (APP), failed. Moreover, a couple of studies critically questioned the relevance of Aβ in the pathogenesis of AD. Thus, new ideas need to be studied and one highly interesting hypothesis is the APP mediated signal transduction to the nucleus...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28576664/uncertainty-and-stress-why-it-causes-diseases-and-how-it-is-mastered-by-the-brain
#10
REVIEW
Achim Peters, Bruce S McEwen, Karl Friston
The term 'stress' - coined in 1936 - has many definitions, but until now has lacked a theoretical foundation. Here we present an information-theoretic approach - based on the 'free energy principle' - defining the essence of stress; namely, uncertainty. We address three questions: What is uncertainty? What does it do to us? What are our resources to master it? Mathematically speaking, uncertainty is entropy or 'expected surprise'. The 'free energy principle' rests upon the fact that self-organizing biological agents resist a tendency to disorder and must therefore minimize the entropy of their sensory states...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28552391/where-are-we-the-anatomy-of-the-murine-cortical-meninges-revisited-for-intravital-imaging-immunology-and-clearance-of-waste-from-the-brain
#11
REVIEW
Jonathan A Coles, Elmarie Myburgh, James M Brewer, Paul G McMenamin
Rapid progress is being made in understanding the roles of the cerebral meninges in the maintenance of normal brain function, in immune surveillance, and as a site of disease. Most basic research on the meninges and the neural brain is now done on mice, major attractions being the availability of reporter mice with fluorescent cells, and of a huge range of antibodies useful for immunocytochemistry and the characterization of isolated cells. In addition, two-photon microscopy through the unperforated calvaria allows intravital imaging of the undisturbed meninges with sub-micron resolution...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28528956/brain-interference-revisiting-the-role-of-ifn%C3%AE-in-the-central-nervous-system
#12
REVIEW
S Monteiro, S Roque, F Marques, M Correia-Neves, J J Cerqueira
Interferon gamma (IFNγ) is a pro-inflammatory cytokine, first described as a secreted molecule capable of interfering with viral replication. Since then, numerous other important actions in the context of the immune response to invading pathogens (including those invading the brain) have been ascribed to this pleiotropic cytokine. Nevertheless, the precise role of IFNγ in neuropsychiatric and neurodegenerative disorders, and its possible contribution to the regulation of normal brain function, remains enigmatic...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28502807/augmenting-brain-metabolism-to-increase-macro-and-chaperone-mediated-autophagy-for-decreasing-neuronal-proteotoxicity-and-aging
#13
REVIEW
Ben Loos, Daniel J Klionsky, Esther Wong
Accumulation of toxic protein aggregates in the nerve cells is a hallmark of neuronal diseases and brain aging. Mechanisms to enhance neuronal surveillance to improve neuronal proteostasis have a direct impact on promoting neuronal health and forestalling age-related decline in brain function. Autophagy is a lysosomal degradative pathway pivotal for neuronal protein quality control. Different types of autophagic mechanisms participate in protein handling in neurons. Macroautophagy targets misfolded and aggregated proteins in autophagic vesicles to the lysosomes for destruction, while chaperone-mediated autophagy (CMA) degrades specific soluble cytosolic proteins delivered to the lysosomes by chaperones...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28457671/old-and-new-challenges-in-parkinson-s-disease-therapeutics
#14
REVIEW
Ana O Pires, F G Teixeira, B Mendes-Pinheiro, Sofia C Serra, Nuno Sousa, António J Salgado
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the degeneration of dopaminergic neurons and/or loss od neuronal projections, in several dopaminergic networks. Current treatments for idiopathic PD rely mainly on the use of pharmacologic agents to improve motor symptomatology of PD patients. Nevertheless, so far PD remains an incurable disease. Therefore, it is of utmost importance to establish new therapeutic strategies for PD treatment. Over the last 20 years, several molecular, gene and cell/stem-cell therapeutic approaches have been developed with the aim of counteracting or retarding PD progression...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28322921/linking-deregulation-of-non-coding-rna-to-the-core-pathophysiology-of-alzheimer-s-disease-an-integrative-review
#15
REVIEW
Mark J Millan
The human genome encodes a vast repertoire of protein non-coding RNAs (ncRNA), some specific to the brain. MicroRNAs, which interfere with the translation of target mRNAs, are of particular interest since their deregulation has been implicated in neurodegenerative disorders like Alzheimer's disease (AD). However, it remains challenging to link the complex body of observations on miRNAs and AD into a coherent framework. Using extensive graphical support, this article discusses how a diverse panoply of miRNAs convergently and divergently impact (and are impacted by) core pathophysiological processes underlying AD: neuroinflammation and oxidative stress; aberrant generation of β-amyloid-42 (Aβ42); anomalies in the production, cleavage and post-translational marking of Tau; impaired clearance of Aβ42 and Tau; perturbation of axonal organisation; disruption of synaptic plasticity; endoplasmic reticulum stress and the unfolded protein response; mitochondrial dysfunction; aberrant induction of cell cycle re-entry; and apoptotic loss of neurons...
September 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28629600/multiple-mechanisms-of-neurodegeneration-and-progression
#16
EDITORIAL
Maria Trinidad Herrero, Micaela Morelli
No abstract text is available yet for this article.
August 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/27887908/the-yin-and-yang-of-nucleic-acid-based-therapy-in-the-brain
#17
REVIEW
Stefano Gustincich, Silvia Zucchelli, Antonello Mallamaci
The post-genomic era has unveiled the existence of a large repertory of non-coding RNAs and repetitive elements that play a fundamental role in cellular homeostasis and dysfunction. These may represent unprecedented opportunities to modify gene expression at the right time in the correct space in vivo, providing an almost unlimited reservoir of new potential pharmacological agents. Hijacking their mode of actions, the druggable genome can be extended to regulatory RNAs and DNA elements in a scalable fashion...
August 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/27530222/the-multifaceted-role-of-metalloproteinases-in-physiological-and-pathological-conditions-in-embryonic-and-adult-brains
#18
REVIEW
Maria Egle De Stefano, Maria Trinidad Herrero
Matrix metalloproteinases (MMPs) are a large family of ubiquitous extracellular endopeptidases, which play important roles in a variety of physiological and pathological conditions, from the embryonic stages throughout adult life. Their extraordinary physiological "success" is due to concomitant broad substrate specificities and strict regulation of their expression, activation and inhibition levels. In recent years, MMPs have gained increasing attention as significant effectors in various aspects of central nervous system (CNS) physiology...
August 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/27236051/long-term-consequences-of-prenatal-stress-and-neurotoxicants-exposure-on-neurodevelopment
#19
REVIEW
Marta C Antonelli, María Eugenia Pallarés, Sandra Ceccatelli, Stefan Spulber
There is a large consensus that the prenatal environment determines the susceptibility to pathological conditions later in life. The hypothesis most widely accepted is that exposure to insults inducing adverse conditions in-utero may have negative effects on the development of target organs, disrupting homeostasis and increasing the risk of diseases at adulthood. Several models have been proposed to investigate the fetal origins of adult diseases, but although these approaches hold true for almost all diseases, particular attention has been focused on disorders related to the central nervous system, since the brain is particularly sensitive to alterations of the microenvironment during early development...
August 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/27107797/microglial-phenotypes-in-parkinson-s-disease-and-animal-models-of-the-disease
#20
REVIEW
Valerie Joers, Malú G Tansey, Giovanna Mulas, Anna R Carta
Over the last decade the important concept has emerged that microglia, similar to other tissue macrophages, assume different phenotypes and serve several effector functions, generating the theory that activated microglia can be organized by their pro-inflammatory or anti-inflammatory and repairing functions. Importantly, microglia exist in a heterogenous population and their phenotypes are not permanently polarized into two categories; they exist along a continuum where they acquire different profiles based on their local environment...
August 2017: Progress in Neurobiology
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