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https://www.readbyqxmd.com/read/28912161/disruption-of-bmal1-impairs-blood-brain-barrier-integrity-via-pericyte-dysfunction
#1
Ryota Nakazato, Kenji Kawabe, Daisuke Yamada, Shinsuke Ikeno, Michihiro Mieda, Shigeki Shimba, Eiichi Hinoi, Yukio Yoneda, Takeshi Takarada
Circadian rhythm disturbances are well-established in neurological diseases. However, how these disruptions cause homeostatic imbalances remains poorly understood. Brain and muscle aryl hydrocarbon receptor nuclear translocator-like protein 1 (Bmal1) is a major circadian clock transcriptional activator, and Bmal1 deficiency in male Bmal1nestin(-/-) mice induced marked astroglial activation without affecting the number of astrocytes in the brain and spinal cord. Bmal1 deletion caused blood-brain barrier (BBB) hyperpermeability with an age-dependent loss of pericyte coverage of blood vessels in the brain...
September 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28889992/astrocytic-expression-of-the-cxcl12-receptor-cxcr7-ackr3-is-a-hallmark-of-the-diseased-but-not-developing-cns
#2
Malte Puchert, Fabian Pelkner, Gregor Stein, Doychin N Angelov, Johannes Boltze, Daniel-Christoph Wagner, Francesca Odoardi, Alexander Flügel, Wolfgang J Streit, Jürgen Engele
Based on our previous demonstration of CXCR7 as the major mediator of CXCL12 signaling in cultured astrocytes, we have now compared astrocytic expression of the CXCL12 receptors, CXCR7 and CXCR4, during CNS development and disease. In addition, we asked whether disease-associated conditions/factors affect expression of CXCL12 receptors in astrocytes. In the late embryonic rat brain, CXCR7(+)/GFAP(+) cells were restricted to the ventricular/subventricular zone while CXCR4 was widely absent from GFAP-positive cells...
September 7, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28877271/spinal-cord-homogenates-from-sod1-familial-amyotrophic-lateral-sclerosis-induce-sod1-aggregation-in-living-cells
#3
Edward Pokrishevsky, Ran Ha Hong, Ian R Mackenzie, Neil R Cashman
Mutant Cu/Zn superoxide dismutase (SOD1) can confer its misfolding on wild-type SOD1 in living cells; the propagation of misfolding can also be transmitted between cells in vitro. Recent studies identified fluorescently-tagged SOD1G85R as a promiscuous substrate that is highly prone to aggregate by a variety of templates, in vitro and in vivo. Here, we utilized several SOD1-GFP reporter proteins with G37R, G85R, or G93A mutations in SOD1. We observed that human spinal cord homogenates prepared from SOD1 familial ALS (FALS) can induce significantly more intracellular reporter protein aggregation than spinal cord homogenates from sporadic ALS, Alzheimer's disease, multiple system atrophy or healthy control individuals...
2017: PloS One
https://www.readbyqxmd.com/read/28861160/long-nonding-rna-uca1-regulates-neural-stem-cell-differentiation-by-controlling-mir-1-hes1-expression
#4
Jiaolin Zheng, Dan Yi, Yu Liu, Mingqiu Wang, Yulan Zhu, Huaizhang Shi
Neural stem cells are able to self-renew and generate glial and neuronal lineages. Neural stem cell may serve as therapeutic method for neurological disorders including spinal cord injuries, Parkinson's disease, Huntington's disease and Alzheimer's disease. Long noncoding RNAs (lncRNAs) are longer than 200 nucleotides with limited protein-coding capacity. Recent studies have demonstreated that lncRNAs play an important role in several cellular processes including cell differentiation, cell development, proliferation, apoptosis, invasion and migration...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28818082/comparing-chronic-condition-rates-using-icd-9-and-icd-10-in-va-patients-fy2014-2016
#5
Jean Yoon, Adam Chow
BACKGROUND: Management of patients with chronic conditions relies on accurate measurement. It is unknown how transition to the ICD-10 coding system affected reporting of chronic condition rates over time. We measured chronic condition rates 2 years before and 1 year after the transition to ICD-10 to examine changes in prevalence rates and potential measurement issues in the Veterans Affairs (VA) health care system. METHODS: We developed definitions for 34 chronic conditions using ICD-9 and ICD-10 codes and compared the prevalence rates of these conditions from FY2014 to 2016 in a 20% random sample (1...
August 17, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28761431/synaptosomal-associated-protein-25-may-be-an-intervention-target-for-improving-sensory-and-locomotor-functions-after-spinal-cord-contusion
#6
Zhan-Qiong Zhong, Yang Xiang, Xi Hu, You-Cui Wang, Xi Zeng, Xiao-Meng Wang, Qing-Jie Xia, Ting-Hua Wang, Xiao Zhang
Synaptosomal-associated protein 25 kDa (SNAP-25) is localized on the synapse and participates in exocytosis and neurotransmitter release. Decreased expression of SNAP-25 is associated with Alzheimer's disease and attention deficit/hyperactivity disorder. However, the expression of SNAP-25 in spinal cord contusion injury is still unclear. We hypothesized that SNAP-25 is associated with sensory and locomotor functions after spinal cord injury. We established rat models of spinal cord contusion injury to detect gene changes with a gene array...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28754163/choroid-plexus-cerebrospinal-fluid-route-for-monocyte-derived-macrophages-after-stroke
#7
Ruimin Ge, Daniel Tornero, Masao Hirota, Emanuela Monni, Cecilia Laterza, Olle Lindvall, Zaal Kokaia
BACKGROUND: Choroid plexus (CP) supports the entry of monocyte-derived macrophages (MDMs) to the central nervous system in animal models of traumatic brain injury, spinal cord injury, and Alzheimer's disease. Whether the CP is involved in the recruitment of MDMs to the injured brain after ischemic stroke is unknown. METHODS: Adult male C57BL/6 mice were subjected to focal cortical ischemia by permanent occlusion of the distal branch of the right middle cerebral artery...
July 28, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28737113/micrornas-roles-in-regulating-neuroinflammation
#8
Andrew D Gaudet, Laura K Fonken, Linda R Watkins, Randy J Nelson, Phillip G Popovich
MicroRNAs (miRNAs) are small noncoding RNAs that broadly affect cellular and physiological function in all multicellular organisms. Here, the role of miRNAs in neuroinflammation is considered. miRNAs are 21- to 23-oligonucleotide RNAs that regulate translation of specific RNAs by binding to complementary regulatory RNA sequences, thereby causing mRNA degradation or sequestration. More than 5000 miRNAs likely exist in humans, and each miRNA binds an average of 200 RNAs. Specific immunomodulatory miRNAs can regulate a set of RNAs in a coordinated manner, suggesting that effective miRNA-based therapeutic manipulations for neuroinflammatory conditions may be revealed...
July 1, 2017: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/28679106/macrophage-migration-inhibitory-factor-a-multifaceted-cytokine-implicated-in-multiple-neurological-diseases
#9
REVIEW
Marcel F Leyton-Jaimes, Joy Kahn, Adrian Israelson
Macrophage migration inhibitory factor (MIF) is a conserved cytokine found as a homotrimer protein. It is found in a wide spectrum of cell types in the body including neuronal and non-neuronal cells. MIF is implicated in several biological processes; chemo-attraction, cytokine activity, and receptor binding, among other functions. More recently, a chaperone-like activity has been added to its repertoire. In this review, we focus on the implication of MIF in the central nervous system and peripheries, its role in neurological disorders, and the mechanisms by which MIF is regulated...
July 2, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28666746/micrornas-as-important-regulators-of-exercise-adaptation
#10
REVIEW
Gustavo J J Silva, Anja Bye, Hamid El Azzouzi, Ulrik Wisløff
A significant body of evidence supports the protective role of exercise training (ET) in cardiovascular diseases, skeletal muscle dystrophies, several types of cancer, Alzheimer disease or even in the recovery of spinal cord injury. In spite of this, the molecular mechanisms underlying the beneficial effects of exercise training are not well understood and remain elusive. Several mechanisms have been proposed in the past, but more recently microRNAs (miRNAs), small non-coding RNA molecules involved in a variety of basic biological processes that negatively modulate gene expression, recognized as important regulatory molecules...
June 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28622692/motor-deficits-are-independent-of-axonopathy-in-an-alzheimer-s-disease-mouse-model-of-tgcrnd8-mice
#11
Qiuju Yuan, Jian Yang, Wutian Wu, Zhi-Xiu Lin
There have been an increasing number of reports of non-cognitive symptoms in Alzheimer's disease (AD). Some symptoms are associated with the loss of motor functions, e.g. gait disturbances, disturbed activity level and balance. Consistent with clinical findings, several AD mouse models harboring amyloid pathology develop motor impairment. Although the factors that contribute to the motor deficits have not yet been determined, it has been suggested that axonopathy is one of the key factors that may contribute to this particular feature of the disease...
June 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28615436/hospital-safety-among-neurologic-patients-a-population-based-cohort-study-of-adverse-events
#12
MULTICENTER STUDY
Khara M Sauro, Hude Quan, Khokan C Sikdar, Peter Faris, Nathalie Jette
OBJECTIVE: To examine the frequency and type of adverse events (AEs) experienced by neurologic patients in hospital. METHODS: This population-based, retrospective cohort study used hospital discharge abstract data for children and adults admitted to hospital from 2009 to 2015 with 1 of 9 neurologic conditions (Alzheimer disease and related dementia, brain tumor, epilepsy, motor neuron disease, multiple sclerosis, parkinsonism/Parkinson disease, spinal cord injury, traumatic brain injury, and stroke)...
July 18, 2017: Neurology
https://www.readbyqxmd.com/read/28577973/membrane-lipid-therapy-a-historical-perspective-of-membrane-targeted-therapies-from-lipid-bilayer-structure-to-the-pathophysiological-regulation-of-cells
#13
EDITORIAL
Pablo V Escribá
Our current understanding of membrane lipid composition, structure and functions has led to the investigation of their role in cell signaling, both in healthy and pathological cells. As a consequence, therapies based on the regulation of membrane lipid composition and structure have been recently developed. This novel field, known as Membrane Lipid Therapy, is growing and evolving rapidly, providing treatments that are now in use or that are being studied for their application to oncological disorders, Alzheimer's disease, spinal cord injury, stroke, diabetes, obesity, and neuropathic pain...
June 1, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28539884/the-analysis-of-two-bdnf-polymorphisms-g196a-c270t-in-chinese-sporadic-amyotrophic-lateral-sclerosis
#14
Lianping Xu, Danyang Tian, Jiao Li, Lu Chen, Lu Tang, Dongsheng Fan
Amyotrophic lateral sclerosis (ALS) is an ethnically heterogeneous motor neuron disease that results from the selective death of motor neurons in the brain and spinal cord. Brain-derived neurotrophic factor (BDNF) is widely distributed across the central and peripheral nervous systems and plays neurotrophic and other physiological roles in various brain regions. Alterations of neurotrophin availability have been proposed as a pathogenic mechanism underlying ALS neurodegeneration. Several genetic studies have shown a significant association between schizophrenia, Alzheimer's disease, and Parkinson's disease and certain BDNF polymorphisms, specifically G196A (rs6265) and C270T (rs56164415)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28526745/identification-and-characterization-of-nanobodies-targeting-the-epha4-receptor
#15
Lies Schoonaert, Laura Rué, Bart Roucourt, Mieke Timmers, Susan Little, Lucía Chávez-Gutiérrez, Maarten Dewilde, Peter Joyce, Adam Curnock, Peter Weber, Jurgen Haustraete, Gholamreza Hassanzadeh-Ghassabeh, Bart De Strooper, Ludo Van Den Bosch, Philip Van Damme, Robin Lemmens, Wim Robberecht
The ephrin receptor A4 (EphA4) is one of the receptors in the ephrin system that plays a pivotal role in a variety of cell-cell interactions, mostly studied during development. In addition, EphA4 has been found to play a role in cancer biology as well as in the pathogenesis of several neurological disorders such as stroke, spinal cord injury, multiple sclerosis, amyotrophic lateral sclerosis (ALS), and Alzheimer's disease. Pharmacological blocking of EphA4 has been suggested to be a therapeutic strategy for these disorders...
July 7, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28508364/a-novel-2-de-based-proteomic-analysis-to-identify-multiple-substrates-for-specific-protease-in-neuronal-cells
#16
Chiho Kim, Young J Oh
Proteolysis is a process where proteins are broken down into smaller polypeptides or amino acids, comprising one of the important posttranslational modifications of proteins. Since this process is exquisitely achieved by specialized enzymes called proteases under physiological conditions, abnormal protease activity and dysregulation of their substrate proteins are closely associated with a progression of several neurodegenerative diseases including Alzheimer disease, Parkinson disease, stroke, and spinal cord injury...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28476630/membrane-lipid-therapy-a-historical-perspective-of-membrane-targeted-therapies-from-lipid-bilayer-structure-to-the-pathophysiological-regulation-of-cells
#17
REVIEW
Pablo V Escribá
Our current understanding of membrane lipid composition, structure and functions has led to the investigation of their role in cell signaling, both in healthy and pathological cells. As a consequence, therapies based on the regulation of membrane lipid composition and structure have been recently developed. This novel field, known as membrane lipid therapy, is growing and evolving rapidly, providing treatments that are now in use or that are being studied for their application to oncological disorders, Alzheimer's disease, spinal cord injury, stroke, diabetes, obesity, and neuropathic pain...
May 2, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28456941/activation-of-glucagon-like-peptide-1-receptor-promotes-neuroprotection-in-experimental-autoimmune-encephalomyelitis-by-reducing-neuroinflammatory-responses
#18
Chi-Ho Lee, Se Jin Jeon, Kyu Suk Cho, Eunjung Moon, Arjun Sapkota, Hee Sook Jun, Jong Hoon Ryu, Ji Woong Choi
The signaling axis of glucagon-like peptide-1 (GLP-1)/GLP-1 receptor (GLP-1R) has been an important component in overcoming diabetes, and recent reports have uncovered novel beneficial roles of this signaling axis in central nervous system (CNS) disorders, such as Alzheimer's disease, Parkinson's disease, and cerebral ischemia, accelerating processes for exendin-4 repositioning. Here, we studied whether multiple sclerosis (MS) could be a complement to the CNS disorders that are associated with the GLP-1/GLP-1R signaling axis...
April 29, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28444635/the-leukocentric-theory-of-neurological-disorder-a-manifesto
#19
Robert Fern
Approximately half of the human brain is composed of white matter (WM), a specialized tissue housing the axonal projection of neurons and their necessary supporting glial cells. Axons course long distances from their parent soma, have a delicate structure, large surface area and in many cases are dependent upon a uniquely close morphological arrangement with myelinating oligodendrocyte partners; all factors that may predispose them to injury and disease. WM damage is central to a range of well-characterized disorders including multiple sclerosis and spinal cord injury and is also makes a significant contribution to disorders often considered to be largely focused in gray matter; for example, in stroke where ~49% of injury by volume is located in WM...
April 25, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28442357/dl-3-n-butylphthalide-promotes-neuroplasticity-and-motor-recovery-in-stroke-rats
#20
Yefei Sun, Xi Cheng, Huibin Wang, Xiaopeng Mu, Yifan Liang, YuJia Luo, Huiling Qu, Chuansheng Zhao
BACKGROUNDS AND AIMS: Racemic l-3-n-butylphthalide (dl-NBP), is able to achieve a functional recovery in animal models of cerebral ischemia, vascular dementia, and Alzheimer's disease. In this study, we investigated the effect of dl-NBP on axonal growth, neurogenesis and behavioral performances in rats with cerebral ischemia. METHODS: Focal cerebral ischemia in rats was produced by intracerebral injection of endothelin-1. Starting from postoperative day 7, the experimental rats were administered 70mg/kg dl-NBP by oral gavage for two weeks...
June 30, 2017: Behavioural Brain Research
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