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Journal of Neuroinflammation

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https://www.readbyqxmd.com/read/28103949/activation-of-human-b-cells-negatively-regulates-tgf-%C3%AE-1-production
#1
Nicolas Molnarfi, Kristbjörg Bjarnadóttir, Mahdia Benkhoucha, Catherine Juillard, Patrice H Lalive
BACKGROUND: Accumulating evidence indicate that B cells can exhibit pro- or anti-inflammatory activities. Similar to interleukin (IL)-10-competent B cells, we recently showed that transforming growth factor (TGF)-β1-producing regulatory B cells limit the induction of autoimmune neuroinflammation in mice, making them potentially important in maintaining peripheral immune tolerance in central nervous system inflammatory demyelinating disorders such as multiple sclerosis. METHODS: In this study, we compared B cell production of TGF-β1 and IL-10, the two most studied regulatory cytokines, and the pro-inflammatory B cell-derived IL-6 and tumor necrosis factor cytokines under basal conditions and following polyclonal stimulation with dual B cell receptor (BCR) cross-linking and Toll-like receptor (TLR)9 engagement...
January 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28103888/photoreceptor-protection-via-blockade-of-bet-epigenetic-readers-in-a-murine-model-of-inherited-retinal-degeneration
#2
Lei Zhao, Jun Li, Yingmei Fu, Mengxue Zhang, Bowen Wang, Jonathan Ouellette, Pawan K Shahi, Bikash R Pattnaik, Jyoti J Watters, Wai T Wong, Lian-Wang Guo
BACKGROUND: The bromodomain and extraterminal domain (BET) family proteins (BET2, BET3, and BET4) "read" (bind) histone acetylation marks via two distinct bromodomains (Brom1 and Brom2) facilitating transcriptional activation. These epigenetic "readers" play crucial roles in pathogenic processes such as inflammation. The role of BETs in influencing the degenerative process in the retina is however unknown. METHODS: We employed the rd10 mouse model (Pde6b (rd10) mutation) of retinitis pigmentosa (RP) to examine the involvement of BET proteins in retinal neurodegeneration...
January 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28100246/genetic-effect-of-interleukin-1-beta-c-511t-polymorphism-on-the-structural-covariance-network-and-white-matter-integrity-in-alzheimer-s-disease
#3
Chi-Wei Huang, Shih-Wei Hsu, Shih-Jen Tsai, Nai-Ching Chen, Mu-En Liu, Chen-Chang Lee, Shu-Hua Huang, Weng-Neng Chang, Ya-Ting Chang, Wan-Chen Tsai, Chiung-Chih Chang
BACKGROUND: Inflammatory processes play a pivotal role in the degenerative process of Alzheimer's disease. In humans, a biallelic (C/T) polymorphism in the promoter region (position-511) (rs16944) of the interleukin-1 beta gene has been significantly associated with differences in the secretory capacity of interleukin-1 beta. In this study, we investigated whether this functional polymorphism mediates the brain networks in patients with Alzheimer's disease. METHODS: We enrolled a total of 135 patients with Alzheimer's disease (65 males, 70 females), and investigated their gray matter structural covariance networks using 3D T1 magnetic resonance imaging and their white matter macro-structural integrities using fractional anisotropy...
January 18, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28095856/baff-index-and-cxcl13-levels-in-the-cerebrospinal-fluid-associate-respectively-with-intrathecal-igg-synthesis-and-cortical-atrophy-in-multiple-sclerosis-at-clinical-onset
#4
M Puthenparampil, L Federle, S Miante, A Zito, E Toffanin, S Ruggero, M Ermani, S Pravato, D Poggiali, P Perini, F Rinaldi, P Gallo
BACKGROUND: B lymphocytes are thought to play a relevant role in multiple sclerosis (MS) pathology. The in vivo analysis of intrathecally produced B cell-related cytokines may help to clarify the mechanisms of B cell recruitment and immunoglobulin production within the central nervous system (CNS) in MS. METHODS: Paired cerebrospinal fluid (CSF) and serum specimens from 40 clinically isolated syndrome suggestive of MS or early-onset relapsing-remitting MS patients (CIS/eRRMS) and 17 healthy controls (HC) were analyzed for the intrathecal synthesis of IgG (quantitative formulae and IgG oligoclonal bands, IgGOB), CXCL13, BAFF, and IL-21...
January 17, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086980/inflammation-in-epileptogenesis-after-traumatic-brain-injury
#5
REVIEW
Kyria M Webster, Mujun Sun, Peter Crack, Terence J O'Brien, Sandy R Shultz, Bridgette D Semple
BACKGROUND: Epilepsy is a common and debilitating consequence of traumatic brain injury (TBI). Seizures contribute to progressive neurodegeneration and poor functional and psychosocial outcomes for TBI survivors, and epilepsy after TBI is often resistant to existing anti-epileptic drugs. The development of post-traumatic epilepsy (PTE) occurs in a complex neurobiological environment characterized by ongoing TBI-induced secondary injury processes. Neuroinflammation is an important secondary injury process, though how it contributes to epileptogenesis, and the development of chronic, spontaneous seizure activity, remains poorly understood...
January 13, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086920/absence-of-system-xc-on-immune-cells-invading-the-central-nervous-system-alleviates-experimental-autoimmune-encephalitis
#6
Ellen Merckx, Giulia Albertini, Magdalena Paterka, Cathy Jensen, Philipp Albrecht, Michael Dietrich, Joeri Van Liefferinge, Eduard Bentea, Lise Verbruggen, Thomas Demuyser, Lauren Deneyer, Jan Lewerenz, Geert van Loo, Jacques De Keyser, Hideyo Sato, Pamela Maher, Axel Methner, Ann Massie
BACKGROUND: Multiple sclerosis (MS) is an autoimmune demyelinating disease that affects the central nervous system (CNS), leading to neurodegeneration and chronic disability. Accumulating evidence points to a key role for neuroinflammation, oxidative stress, and excitotoxicity in this degenerative process. System xc(-) or the cystine/glutamate antiporter could tie these pathological mechanisms together: its activity is enhanced by reactive oxygen species and inflammatory stimuli, and its enhancement might lead to the release of toxic amounts of glutamate, thereby triggering excitotoxicity and neurodegeneration...
January 13, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086916/microglial-activation-in-parkinson-s-disease-using-18-f-feppa
#7
Christine Ghadery, Yuko Koshimori, Sarah Coakeley, Madeleine Harris, Pablo Rusjan, Jinhee Kim, Sylvain Houle, Antonio P Strafella
BACKGROUND: Neuroinflammatory processes including activated microglia have been reported to play an important role in Parkinson's disease (PD). Increased expression of translocator protein (TSPO) has been observed after brain injury and inflammation in neurodegenerative diseases. Positron emission tomography (PET) radioligand targeting TSPO allows for the quantification of neuroinflammation in vivo. METHODS: Based on the genotype of the rs6791 polymorphism in the TSPO gene, we included 25 mixed-affinity binders (MABs) (14 PD patients and 11 age-matched healthy controls (HC)) and 27 high-affinity binders (HABs) (16 PD patients and 11 age-matched HC) to assess regional differences in the second-generation radioligand [(18)F]-FEPPA between PD patients and HC...
January 11, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086912/wwl70-attenuates-pge2-production-derived-from-2-arachidonoylglycerol-in-microglia-by-abhd6-independent-mechanism
#8
Mikiei Tanaka, Sean Moran, Jie Wen, Kwame Affram, Tinghua Chen, Aviva J Symes, Yumin Zhang
BACKGROUND: α/β-Hydrolase domain 6 (ABHD6) is one of the major enzymes for endocannabinoid 2-arachidonoylglycerol (2-AG) hydrolysis in microglia cells. Our recent studies have shown that a selective ABHD6 inhibitor WWL70 has anti-inflammatory and neuroprotective effects in animal models of traumatic brain injury and multiple sclerosis. However, the role of ABHD6 in the neuroinflammatory response and the mechanisms by which WWL70 suppresses inflammation has not yet been elucidated in reactive microglia...
January 10, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086911/enhanced-neuroinflammation-mediated-by-dna-methylation-of-the-glucocorticoid-receptor-triggers-cognitive-dysfunction-after-sevoflurane-anesthesia-in-adult-rats-subjected-to-maternal-separation-during-the-neonatal-period
#9
Yangzi Zhu, Yu Wang, Rui Yao, Ting Hao, Junli Cao, He Huang, Liwei Wang, Yuqing Wu
BACKGROUND: Mounting evidence indicates that children who experience abuse and neglect are prone to chronic diseases and premature mortality later in life. One mechanistic hypothesis for this phenomenon is that early life adversity alters the expression or functioning of the glucocorticoid receptor (GR) throughout the course of life and thereby increases sensitivity to inflammatory stimulation. An exaggerated pro-inflammatory response is generally considered to be a key cause of postoperative cognitive dysfunction (POCD)...
January 7, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086956/differential-expression-of-e-type-prostanoid-receptors-2-and-4-in-microglia-stimulated-with-lipopolysaccharide
#10
Ester Bonfill-Teixidor, Amaia Otxoa-de-Amezaga, Miriam Font-Nieves, M Glòria Sans-Fons, Anna M Planas
BACKGROUND: Cyclooxygenase-2 (COX-2) is induced under inflammatory conditions, and prostaglandin E2 (PGE2) is one of the products of COX activity. PGE2 has pleiotropic actions depending on the activation of specific E-type prostanoid EP1-4 receptors. We investigated the involvement of PGE2 and EP receptors in glial activation in response to an inflammatory challenge induced by LPS. METHODS: Cultures of mouse microglia or astroglia cells were treated with LPS in the presence or absence of COX-2 inhibitors, and the production of PGE2 was measured by ELISA...
January 5, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086928/resolvin-rvd2-reduces-hypothalamic-inflammation-and-rescues-mice-from-diet-induced-obesity
#11
Livia B Pascoal, Bruna Bombassaro, Albina F Ramalho, Andressa Coope, Rodrigo F Moura, Felipe Correa-da-Silva, Leticia Ignacio-Souza, Daniela Razolli, Diogo de Oliveira, Rodrigo Catharino, Licio A Velloso
BACKGROUND: Diet-induced hypothalamic inflammation is an important mechanism leading to dysfunction of neurons involved in controlling body mass. Studies have shown that polyunsaturated fats can reduce hypothalamic inflammation. Here, we evaluated the presence and function of RvD2, a resolvin produced from docosahexaenoic acid, in the hypothalamus of mice. METHODS: Male Swiss mice were fed either chow or a high-fat diet. RvD2 receptor and synthetic enzymes were evaluated by real-time PCR and immunofluorescence...
January 5, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086806/age-related-macular-degeneration-associated-polymorphism-rs10490924-in-arms2-results-in-deficiency-of-a-complement-activator
#12
Sven Micklisch, Yuchen Lin, Saskia Jacob, Marcus Karlstetter, Katharina Dannhausen, Prasad Dasari, Monika von der Heide, Hans-Martin Dahse, Lisa Schmölz, Felix Grassmann, Medhanie Alene, Sascha Fauser, Harald Neumann, Stefan Lorkowski, Diana Pauly, Bernhard H Weber, Antonia M Joussen, Thomas Langmann, Peter F Zipfel, Christine Skerka
BACKGROUND: Age-related macular degeneration (AMD) is the leading cause of blindness in developed countries. The polymorphism rs10490924 in the ARMS2 gene is highly associated with AMD and linked to an indel mutation (del443ins54), the latter inducing mRNA instability. At present, the function of the ARMS2 protein, the exact cellular sources in the retina and the biological consequences of the rs10490924 polymorphism are unclear. METHODS: Recombinant ARMS2 was expressed in Pichia pastoris, and protein functions were studied regarding cell surface binding and complement activation in human serum using fluoresence-activated cell sorting (FACS) as well as laser scanning microscopy (LSM)...
January 5, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086930/mannose-binding-lectin-associated-serine-protease-2-masp-2-contributes-to-poor-disease-outcome-in-humans-and-mice-with-pneumococcal-meningitis
#13
E Soemirien Kasanmoentalib, Mercedes Valls Seron, Bart Ferwerda, Michael W Tanck, Aeilko H Zwinderman, Frank Baas, Arie van der Ende, Matthijs C Brouwer, Diederik van de Beek
BACKGROUND: Pneumococcal meningitis is the most common and severe form of bacterial meningitis. Fatality rates are substantial, and long-term sequelae develop in about half of survivors. Disease outcome has been related to the severity of the pro-inflammatory response in the subarachnoid space. The complement system, which mediates key inflammatory processes, has been implicated as a modulator of pneumococcal meningitis disease severity in animal studies. METHODS: We investigated mannose-binding lectin-associated serine protease (MASP-2) levels in cerebrospinal fluid (CSF) samples derived from the diagnostic lumbar puncture, which was available for 307 of 792 pneumococcal meningitis episodes included in our prospective nationwide cohort study (39%), and the association between these levels and clinical outcome...
January 3, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28086917/resveratrol-regulates-neuro-inflammation-and-induces-adaptive-immunity-in-alzheimer-s-disease
#14
Charbel Moussa, Michaeline Hebron, Xu Huang, Jaeil Ahn, Robert A Rissman, Paul S Aisen, R Scott Turner
BACKGROUND: Treatment of mild-moderate Alzheimer's disease (AD) subjects (N = 119) for 52 weeks with the SIRT1 activator resveratrol (up to 1 g by mouth twice daily) attenuates progressive declines in CSF Aβ40 levels and activities of daily living (ADL) scores. METHODS: For this retrospective study, we examined banked CSF and plasma samples from a subset of AD subjects with CSF Aβ42 <600 ng/ml (biomarker-confirmed AD) at baseline (N = 19 resveratrol-treated and N = 19 placebo-treated)...
January 3, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27955696/metabolic-consequences-of-inflammatory-disruption-of-the-blood-brain-barrier-in-an-organ-on-chip-model-of-the-human-neurovascular-unit
#15
Jacquelyn A Brown, Simona G Codreanu, Mingjian Shi, Stacy D Sherrod, Dmitry A Markov, M Diana Neely, Clayton M Britt, Orlando S Hoilett, Ronald S Reiserer, Philip C Samson, Lisa J McCawley, Donna J Webb, Aaron B Bowman, John A McLean, John P Wikswo
BACKGROUND: Understanding blood-brain barrier responses to inflammatory stimulation (such as lipopolysaccharide mimicking a systemic infection or a cytokine cocktail that could be the result of local or systemic inflammation) is essential to understanding the effect of inflammatory stimulation on the brain. It is through the filter of the blood-brain barrier that the brain responds to outside influences, and the blood-brain barrier is a critical point of failure in neuroinflammation. It is important to note that this interaction is not a static response, but one that evolves over time...
December 12, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27955671/pro-epileptogenic-effects-of-viral-like-inflammation-in-both-mature-and-immature-brains
#16
Nina Dupuis, Andrey Mazarati, Béatrice Desnous, Vibol Chhor, Bobbi Fleiss, Tifenn Le Charpentier, Sophie Lebon, Zsolt Csaba, Pierre Gressens, Pascal Dournaud, Stéphane Auvin
BACKGROUND: Infectious encephalitides are most often associated with acute seizures during the infection period and are risk factors for the development of epilepsy at later times. Mechanisms of viral encephalitis-induced epileptogenesis are poorly understood. Here, we evaluated the contribution of viral encephalitis-associated inflammation to ictogenesis and epileptogenesis using a rapid kindling protocol in rats. In addition, we examined whether minocycline can improve outcomes of viral-like brain inflammation...
December 12, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27931222/mir-15a-16-reduces-retinal-leukostasis-through-decreased-pro-inflammatory-signaling
#17
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
#18
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
#19
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
#20
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
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