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Journal of Neuroinflammation

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https://www.readbyqxmd.com/read/27931222/mir-15a-16-reduces-retinal-leukostasis-through-decreased-pro-inflammatory-signaling
#1
Eun-Ah Ye, Li Liu, Youde Jiang, Jenny Jan, Subhash Gaddipati, Susmit Suvas, Jena J Steinle
BACKGROUND: Hyperglycemia is a significant risk factor for diabetic retinopathy and induces increased inflammatory responses and retinal leukostasis, as well as vascular damage. Although there is an increasing amount of evidence that miRNA may be involved in the regulation in the pathology of diabetic retinopathy, the mechanisms by which miRNA mediate cellular responses to control onset and progression of diabetic retinopathy are still unclear. The purpose of our study was to investigate the hypothesis that miR-15a/16 inhibit pro-inflammatory signaling to reduce retinal leukostasis...
December 8, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27931217/lrp1-modulates-the-microglial-immune-response-via-regulation-of-jnk-and-nf-%C3%AE%C2%BAb-signaling-pathways
#2
Longyu Yang, Chia-Chen Liu, Honghua Zheng, Takahisa Kanekiyo, Yuka Atagi, Lin Jia, Daxin Wang, Aurelie N'songo, Dan Can, Huaxi Xu, Xiao-Fen Chen, Guojun Bu
BACKGROUND: Neuroinflammation is characterized by microglial activation and the increased levels of cytokines and chemokines in the central nervous system (CNS). Recent evidence has implicated both beneficial and toxic roles of microglia when over-activated upon nerve injury or in neurodegenerative diseases, including Alzheimer's disease (AD). The low-density lipoprotein receptor-related protein 1 (LRP1) is a major receptor for apolipoprotein E (apoE) and amyloid-β (Aβ), which play critical roles in AD pathogenesis...
December 8, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27927222/tollip-an-early-regulator-of-the-acute-inflammatory-response-in-the-substantia-nigra
#3
Marie Humbert-Claude, D Duc, D Dwir, L Thieren, J Sandström von Tobel, C Begka, F Legueux, D Velin, M H Maillard, K Q Do, F Monnet-Tschudi, L Tenenbaum
BACKGROUND: Tollip is a ubiquitously expressed protein, originally described as a modulator of the IL-1R/TLR-NF-κB signaling pathways. Although this property has been well characterized in peripheral cells, and despite some evidence of its expression in the central nervous system, the role of Tollip in neuroinflammation remains poorly understood. The present study sought to explore the implication of Tollip in inflammation in the substantia nigra pars compacta, the structure affected in Parkinson's disease...
December 7, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27912762/regulation-of-effector-function-of-cns-autoreactive-cd4-t-cells-through-inhibitory-receptors-and-il-7r%C3%AE
#4
Patrick K Nuro-Gyina, Elizabeth L Rieser, Marissa C Granitto, Wei Pei, Yue Liu, Priscilla W Lee, Saba Aqel, Jian Zhang, Amy E Lovett-Racke, Michael K Racke, Yuhong Yang
BACKGROUND: Multiple sclerosis (MS) is a chronic CNS autoimmune disease characterized by inflammation, demyelination, and neuronal degeneration, where myelin-specific CD4 T cells play critical roles in the formation of acute MS lesions and disease progression. The suppression of IL-7Rα expression and the upregulation of inhibitory receptors (PD-1, etc.) are essential parts of the cell-intrinsic immunosuppressive program regulating T effector functions to prevent autoimmunity. However, little is known on the factors regulating IL-7Rα/PD-1 balance in myelin-specific CD4 T effector/memory cells during the development of CNS autoimmunity...
December 3, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27905992/variable-sensitivity-to-complement-dependent-cytotoxicity-in-murine-models-of-neuromyelitis-optica
#5
Yiting Liu, Danielle E Harlow, Katherine S Given, Gregory P Owens, Wendy B Macklin, Jeffrey L Bennett
BACKGROUND: Studies of neuromyelitis optica (NMO), an autoimmune disease of the central nervous system (CNS), have demonstrated that autoantibodies against the water channel aquaporin-4 (AQP4) induce astrocyte damage through complement-dependent cytotoxicity (CDC). In developing experimental models of NMO using cells, tissues or animals from mice, co-administration of AQP4-IgG and normal human serum, which serves as the source of human complement (HC), is required. The sensitivity of mouse CNS cells to HC and CDC in these models is not known...
December 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27905989/the-histone-deacetylase-inhibitor-sodium-butyrate-exhibits-neuroprotective-effects-for-ischemic-stroke-in-middle-aged-female-rats
#6
Min Jung Park, Farida Sohrabji
BACKGROUND: Sodium butyrate (NaB) is a histone deacetylase (HDAC) inhibitor exhibiting anti-inflammatory and neuroprotective effects in a rat ischemic model of stroke as well as a myocardial ischemia model. Although clinical evidence shows that older women are at higher risk for stroke occurrence and greater stroke severity, no studies have evaluated the effectiveness of NaB either in females or in older animals. METHODS: To determine the effects of NaB on stroke in older females, acyclic middle-aged Sprague-Dawley female rats (9-11 months old, constant diestrus) were subject to middle cerebral artery occlusion (MCAo) by intracerebral injection of recombinant endothelin-1...
December 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27903275/cell-cycle-inhibition-reduces-inflammatory-responses-neuronal-loss-and-cognitive-deficits-induced-by-hypobaria-exposure-following-traumatic-brain-injury
#7
Jacob W Skovira, Junfang Wu, Jessica J Matyas, Alok Kumar, Marie Hanscom, Shruti V Kabadi, Raymond Fang, Alan I Faden
BACKGROUND: Traumatic brain injury (TBI) patients in military settings can be exposed to prolonged periods of hypobaria (HB) during aeromedical evacuation. Hypobaric exposure, even with supplemental oxygen to prevent hypoxia, worsens outcome after experimental TBI, in part by increasing neuroinflammation. Cell cycle activation (CCA) after TBI has been implicated as a mechanism contributing to both post-traumatic cell death and neuroinflammation. Here, we examined whether hypobaric exposure in rats subjected to TBI increases CCA and microglial activation in the brain, as compared to TBI alone, and to evaluate the ability of a cyclin-dependent kinase (CDK) inhibitor (CR8) to reduce such changes and improve behavioral outcomes...
December 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27894304/brain-inflammation-is-accompanied-by-peripheral-inflammation-in-cstb-mice-a-model-for-progressive-myoclonus-epilepsy
#8
Olesya Okuneva, Zhilin Li, Inken Körber, Saara Tegelberg, Tarja Joensuu, Li Tian, Anna-Elina Lehesjoki
Progressive myoclonus epilepsy of Unverricht-Lundborg type (EPM1) is an autosomal recessively inherited childhood-onset neurodegenerative disorder, characterized by myoclonus, seizures, and ataxia. Mutations in the cystatin B gene (CSTB) underlie EPM1. The CSTB-deficient (Cstb (-/-) ) mouse model recapitulates key features of EPM1, including myoclonic seizures. The mice show early microglial activation that precedes seizure onset and neuronal loss and leads to neuroinflammation. We here characterized the inflammatory phenotype of Cstb (-/-) mice in more detail...
November 28, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27881137/balancing-the-immune-response-in-the-brain-il-10-and-its-regulation
#9
REVIEW
Diogo Lobo-Silva, Guilhermina M Carriche, A Gil Castro, Susana Roque, Margarida Saraiva
BACKGROUND: The inflammatory response is critical to fight insults, such as pathogen invasion or tissue damage, but if not resolved often becomes detrimental to the host. A growing body of evidence places non-resolved inflammation at the core of various pathologies, from cancer to neurodegenerative diseases. It is therefore not surprising that the immune system has evolved several regulatory mechanisms to achieve maximum protection in the absence of pathology. MAIN BODY: The production of the anti-inflammatory cytokine interleukin (IL)-10 is one of the most important mechanisms evolved by many immune cells to counteract damage driven by excessive inflammation...
November 24, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27871289/inhibition-of-stat3-and-mapk-dependent-pge2-synthesis-ameliorates-phagocytosis-of-fibrillar-%C3%AE-amyloid-peptide-1-42-via-ep2-receptor-in-emf-stimulated-n9-microglial-cells
#10
Gen-Lin He, Zhen Luo, Ting-Ting Shen, Ping Li, Ju Yang, Xue Luo, Chun-Hai Chen, Peng Gao, Xue-Sen Yang
BACKGROUND: Prostaglandin E2 (PGE2)-involved neuroinflammatory processes are prevalent in several neurological conditions and diseases. Amyloid burden is correlated with the activation of E-prostanoid (EP) 2 receptors by PGE2 in Alzheimer's disease. We previously demonstrated that electromagnetic field (EMF) exposure can induce pro-inflammatory responses and the depression of phagocytosis in microglial cells, but the signaling pathways involved in phagocytosis of fibrillar β-amyloid (fAβ) in microglial cells exposed to EMF are poorly understood...
November 21, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27863501/mutations-in-lrrk2-impair-nf-%C3%AE%C2%BAb-pathway-in-ipsc-derived-neurons
#11
Rakel López de Maturana, Valérie Lang, Amaia Zubiarrain, Amaya Sousa, Nerea Vázquez, Ana Gorostidi, Julio Águila, Adolfo López de Munain, Manuel Rodríguez, Rosario Sánchez-Pernaute
BACKGROUND: Mutations in leucine-rich repeat kinase 2 (LRRK2) contribute to both familial and idiopathic forms of Parkinson's disease (PD). Neuroinflammation is a key event in neurodegeneration and aging, and there is mounting evidence of LRRK2 involvement in inflammatory pathways. In a previous study, we described an alteration of the inflammatory response in dermal fibroblasts from PD patients expressing the G2019S and R1441G mutations in LRRK2. METHODS: Taking advantage of cellular reprogramming, we generated induced pluripotent stem cell (iPSC) lines and neurons thereafter, harboring LRRK2(G2019S) and LRRK2(R1441G) mutations...
November 18, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27855706/human-class-i-major-histocompatibility-complex-alleles-determine-central-nervous-system-injury-versus-repair
#12
Bharath Wootla, Aleksandar Denic, Jens O Watzlawik, Arthur E Warrington, Laurie J Zoecklein, Louisa M Papke-Norton, Chella David, Moses Rodriguez
BACKGROUND: We investigated the role of human HLA class I molecules in persistent central nervous system (CNS) injury versus repair following virus infection of the CNS. METHODS: Human class I A11(+) and B27(+) transgenic human beta-2 microglobulin positive (Hβ2m(+)) mice of the H-2 (b) background were generated on a combined class I-deficient (mouse beta-2 microglobulin deficient, β2m(0)) and class II-deficient (mouse Aβ(0)) phenotype. Intracranial infection with Theiler's murine encephalomyelitis virus (TMEV) in susceptible SJL mice results in acute encephalitis with prominent injury in the hippocampus, striatum, and cortex...
November 17, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27855689/metformin-reduces-morphine-tolerance-by-inhibiting-microglial-mediated-neuroinflammation
#13
Yinbing Pan, Xiaodi Sun, Lai Jiang, Liang Hu, Hong Kong, Yuan Han, Cheng Qian, Chao Song, Yanning Qian, Wentao Liu
BACKGROUND: Tolerance seriously impedes the application of morphine in clinical medicine. Thus, it is necessary to investigate the exact mechanisms and efficient treatment. Microglial activation and neuroinflammation in the spinal cord are thought to play pivotal roles on the genesis and maintaining of morphine tolerance. Activation of adenosine monophosphate-activated kinase (AMPK) has been associated with the inhibition of inflammatory nociception. Metformin, a biguanide class of antidiabetic drugs and activator of AMPK, has a potential anti-inflammatory effect...
November 17, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27852330/appearance-of-claudin-5-leukocytes-in-the-central-nervous-system-during-neuroinflammation-a-novel-role-for-endothelial-derived-extracellular-vesicles
#14
Debayon Paul, Valentina Baena, Shujun Ge, Xi Jiang, Evan R Jellison, Timothy Kiprono, Dritan Agalliu, Joel S Pachter
BACKGROUND: The mechanism of leukocyte transendothelial migration (TEM) across the highly restrictive blood-brain barrier (BBB) remains enigmatic, with paracellular TEM thought to require leukocytes to somehow navigate the obstructive endothelial tight junctions (TJs). Transient interactions between TJ proteins on the respective leukocyte and endothelial surfaces have been proposed as one mechanism for TEM. Given the expanding role of extracellular vesicles (EVs) in intercellular communication, we investigated whether EVs derived from brain microvascular endothelial cells (BMEC) of the BBB may play a role in transferring a major TJ protein, claudin-5 (CLN-5), to leukocytes as a possible basis for such a mechanism during neuroinflammation...
November 16, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27846891/cytokine-and-chemokine-alterations-in-tissue-csf-and-plasma-in-early-presymptomatic-phase-of-experimental-allergic-encephalomyelitis-eae-in-a-rat-model-of-multiple-sclerosis
#15
Nozha Borjini, Mercedes Fernández, Luciana Giardino, Laura Calzà
BACKGROUND: Experimental allergic encephalomyelitis (EAE) is the most commonly used experimental animal model for human multiple sclerosis (MS) that has been used so far to study the acute and remission-relapsing phases of the disease. Despite the vast literature on neuroinflammation onset and progression in EAE, important questions are still open regarding in particular the early asymptomatic phase between immunization and clinical onset. METHODS: In this study, we performed a time-course investigation of neuroinflammation and demyelination biomarkers in the spinal cord (SC), cerebrospinal fluid (CSF), and blood in EAE induced in dark agouti (DA) female rats compared to the controls and adjuvant-injected rats, using high-throughput technologies for gene expression and protein assays and focusing on the time-course between immunization, clinical onset (1, 5, 8 days post-immunization (DPI)), and progression (11 and 18 DPI)...
November 15, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27832807/sex-specific-variation-in-signaling-pathways-and-gene-expression-patterns-in-human-leukocytes-in-response-to-endotoxin-and-exercise
#16
Asghar Abbasi, Rodolfo de Paula Vieira, Felix Bischof, Michael Walter, Masoud Movassaghi, Nicole C Berchtold, Andreas M Niess, Carl W Cotman, Hinnak Northoff
BACKGROUND: While exercise effects on the immune system have received increasing attention in recent years, it remains unclear to what extent gender and fluctuations in sex hormones during menstrual cycle influence immunological responses to exercise. METHODS: We investigated mRNA changes induced through exhaustive exercise (half-marathon; pre-exercise and post-exercise [30 min, 3 h, 24 h] on whole blood cultures ± lipopolysaccharide [LPS] [1 h]) with a specific focus on sex differences (men vs women in luteal phase) as an extension of our previous study...
November 10, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27832801/gene-expression-comparison-reveals-distinct-basal-expression-of-hox-members-and-differential-tnf-induced-response-between-brain-and-spinal-cord-derived-microvascular-endothelial-cells
#17
Yves Molino, Françoise Jabès, Amandine Bonnet, Nicolas Gaudin, Anne Bernard, Philippe Benech, Michel Khrestchatisky
BACKGROUND: The heterogeneity of endothelial cell types underlies their remarkable ability to sub-specialize and provide specific requirements for a given vascular bed. Here, we compared rat microvascular endothelial cells (MECs) derived from the brain and spinal cord in both basal and inflammatory conditions. METHODS: We used whole rat genome microarrays to compare, at different time points, basal and TNF-α-induced gene expression of rat MECs from in vitro models of the blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB)...
November 10, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27829467/intracerebral-transplantation-of-interleukin-13-producing-mesenchymal-stem-cells-limits-microgliosis-oligodendrocyte-loss-and-demyelination-in-the-cuprizone-mouse-model
#18
Debbie Le Blon, Caroline Guglielmetti, Chloé Hoornaert, Alessandra Quarta, Jasmijn Daans, Dearbhaile Dooley, Evi Lemmens, Jelle Praet, Nathalie De Vocht, Kristien Reekmans, Eva Santermans, Niel Hens, Herman Goossens, Marleen Verhoye, Annemie Van der Linden, Zwi Berneman, Sven Hendrix, Peter Ponsaerts
BACKGROUND: Promoting the neuroprotective and repair-inducing effector functions of microglia and macrophages, by means of M2 polarisation or alternative activation, is expected to become a new therapeutic approach for central nervous system (CNS) disorders in which detrimental pro-inflammatory microglia and/or macrophages display a major contribution to the neuropathology. In this study, we present a novel in vivo approach using intracerebral grafting of mesenchymal stem cells (MSC) genetically engineered to secrete interleukin 13 (IL13-MSC)...
November 9, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27829437/in-vivo-inhibition-of-mir-155-significantly-alters-post-stroke-inflammatory-response
#19
Juan Carlos Pena-Philippides, Ernesto Caballero-Garrido, Tamar Lordkipanidze, Tamara Roitbak
BACKGROUND: MicroRNA miR-155 is implicated in modulation of the inflammatory processes in various pathological conditions. In our previous studies, we demonstrated that in vivo inhibition of miR-155 promotes functional recovery after mouse experimental stroke. In the present study, we explored if this beneficial effect is associated with miR-155 inhibition-induced alterations in post-stroke inflammatory response. METHODS: Intravenous injections of a specific miR-155 inhibitor were initiated at 48 h after mouse distal middle cerebral artery occlusion (dMCAO)...
November 9, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27821173/anthocyanins-abrogate-glutamate-induced-ampk-activation-oxidative-stress-neuroinflammation-and-neurodegeneration-in-postnatal-rat-brain
#20
Shahid Ali Shah, Faiz Ul Amin, Mehtab Khan, Muhammad Noman Abid, Shafiq Ur Rehman, Tae Hyun Kim, Min Woo Kim, Myeong Ok Kim
BACKGROUND: Glutamate-induced excitotoxicity, oxidative damage, and neuroinflammation are believed to play an important role in the development of a number of CNS disorders. We recently reported that a high dose of glutamate could induce AMPK-mediated neurodegeneration in the postnatal day 7 (PND7) rat brain. Yet, the mechanism of glutamate-induced oxidative stress and neuroinflammation in the postnatal brain is not well understood. Here, we report for the first time the mechanism of glutamate-induced oxidative damage, neuroinflammation, and neuroprotection by polyphenolic anthocyanins in PND7...
November 8, 2016: Journal of Neuroinflammation
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