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Journal of Neuroinflammation

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https://www.readbyqxmd.com/read/28724382/activation-of-cannabinoid-receptor-type-2-attenuates-surgery-induced-cognitive-impairment-in-mice-through-anti-inflammatory-activity
#1
Lingling Sun, Rui Dong, Xin Xu, Xi Yang, Mian Peng
BACKGROUND: Neuroinflammation plays a major role in postoperative cognitive dysfunction (POCD). Accumulated evidence indicates that cannabinoid receptor type 2 (CB2R) can mediate anti-inflammatory and immunomodulatory effects in part by controlling microglial activity. However, the impact of CB2R on postoperative cognition has not been investigated. We hypothesized that CB2R is involved in surgery-induced cognitive impairment in adult mice. METHODS: Adult C57BL/6 mice were subjected to intramedullary fixation surgery for tibial fracture under isoflurane anesthesia and CB2R agonist (JWH133) or CB2R antagonist (AM630) treatment...
July 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28720149/heparanase-promotes-neuroinflammatory-response-during-subarachnoid-hemorrhage-in-rats
#2
Benjarat Changyaleket, Zhao Zhong Chong, Randal O Dull, Danop Nanegrungsunk, Haoliang Xu
BACKGROUND: Heparanase, a mammalian endo-β-D-glucoronidase that specifically degrades heparan sulfate, has been implicated in inflammation and ischemic stroke. However, the role of heparanase in neuroinflammatory response in subarachnoid hemorrhage (SAH) has not yet been investigated. This study was designed to examine the association between heparanase expression and neuroinflammation during subarachnoid hemorrhage. METHODS: Rats were subjected to SAH by endovascular perforation, and the expression of heparanase was determined by Western blot analysis and immunofluorescence in the ipsilateral brain cortex at 24 h post-SAH...
July 18, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28720143/mhc-class-ii-expression-and-potential-antigen-presenting-cells-in-the-retina-during-experimental-autoimmune-uveitis
#3
Deborah A Lipski, Rémi Dewispelaere, Vincent Foucart, Laure E Caspers, Matthieu Defrance, Catherine Bruyns, François Willermain
BACKGROUND: Controversy exists regarding which cell types are responsible for autoantigen presentation in the retina during experimental autoimmune uveitis (EAU) development. In this study, we aimed to identify and characterize the retinal resident and infiltrating cells susceptible to express major histocompatibility complex (MHC) class II during EAU. METHODS: EAU was induced in C57BL/6 mice by adoptive transfer of autoreactive lymphocytes from IRBP1-20-immunized animals...
July 18, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28716092/the-role-of-microglial-p2x7-modulation-of-cell-death-and-cytokine-release
#4
Yingbo He, Natalie Taylor, Lawrence Fourgeaud, Anindya Bhattacharya
BACKGROUND: ATP-gated P2X7 is a non-selective cation channel, which participates in a wide range of cellular functions as well as pathophysiological processes including neuropathic pain, immune response, and neuroinflammation. Despite its abundant expression in microglia, the role of P2X7 in neuroinflammation still remains unclear. METHODS: Primary microglia were isolated from cortices of P0-2 C57BL/6 wild-type or P2X7 knockout (P2X7(-/-)) mouse pups. Lipopolysaccharide, lipopolysaccharide plus IFNγ, or IL4 plus IL13 were used to polarize microglia to pro-inflammatory or anti-inflammatory states...
July 17, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28693588/cxcl11-production-in-cerebrospinal-fluid-distinguishes-herpes-simplex-meningitis-from-herpes-simplex-encephalitis
#5
Liza Lind, Marie Studahl, Linn Persson Berg, Kristina Eriksson
BACKGROUND: The closely related herpes simplex viruses 1 and 2 can cause inflammations of the central nervous system (CNS), where type 1 most often manifest as encephalitis (HSE), and type 2 as meningitis (HSM). HSE is associated with severe neurological complications, while HSM is benign in adults. We proposed that studying the chemokine and cytokine production in cerebrospinal fluid (CSF) and serum could indicate why two closely related viruses exhibit different severity of their accompanied CNS inflammation...
July 10, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28668091/amplification-and-propagation-of-interleukin-1%C3%AE-signaling-by-murine-brain-endothelial-and-glial-cells
#6
Stephanie M Krasnow, J Gabriel Knoll, Santhosh Chakkaramakkil Verghese, Peter R Levasseur, Daniel L Marks
BACKGROUND: During acute infections and chronic illnesses, the pro-inflammatory cytokine interleukin-1β (IL-1β) acts within the brain to elicit metabolic derangements and sickness behaviors. It is unknown which cells in the brain are the proximal targets for IL-1β with respect to the generation of these illness responses. We performed a series of in vitro experiments to (1) investigate which brain cell populations exhibit inflammatory responses to IL-1β and (2) examine the interactions between different IL-1β-responsive cell types in various co-culture combinations...
July 1, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28662718/thrombin-induced-tnfr-dependent-mir-181c-downregulation-promotes-mll1-and-nf-%C3%AE%C2%BAb-target-gene-expression-in-human-microglia
#7
Min Yin, Zhiying Chen, Yetong Ouyang, Huiyan Zhang, Zhigang Wan, Han Wang, Wei Wu, Xiaoping Yin
BACKGROUND: Controlling thrombin-driven microglial activation may serve as a therapeutic target for intracerebral hemorrhage (ICH). Here, we investigated microRNA (miRNA)-based regulation of thrombin-driven microglial activation using an in vitro thrombin toxicity model applied to primary human microglia. METHODS: A miRNA array identified 22 differential miRNA candidates. Quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) identified miR-181c as the most significantly downregulated miRNA...
June 29, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28655348/the-carbon-monoxide-releasing-molecule-alf-186-mediates-anti-inflammatory-and-neuroprotective-effects-via-the-soluble-guanylate-cyclase-%C3%A3-1-in-rats-retinal-ganglion-cells-after-ischemia-and-reperfusion-injury
#8
Felix Ulbrich, Claus Hagmann, Hartmut Buerkle, Carlos C Romao, Nils Schallner, Ulrich Goebel, Julia Biermann
BACKGROUND: The endogenously produced gaseous molecule carbon monoxide is able to promote organ protection after ischemia-reperfusion injuries (IRI). The impact of carbon monoxide releasing molecules (CORM) regarding inflammation in neuronal tissues has not been studied in detail. In this investigation, we aimed to analyze the effects of the CORM ALF-186 on neuro-inflammation and hypothesized that the soluble guanylate cyclase (sGC) is playing a decisive role. METHODS: Retinal ischemia-reperfusion injury was performed for 60 min in Sprague-Dawley rats...
June 27, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28655310/protease-activated-receptor-1-activation-by-granzyme-b-causes-neurotoxicity-that-is-augmented-by-interleukin-1%C3%AE
#9
Paul R Lee, Tory P Johnson, Sharmilee Gnanapavan, Gavin Giovannoni, Tongguang Wang, Joseph P Steiner, Marie Medynets, Mark J Vaal, Valerie Gartner, Avindra Nath
BACKGROUND: The cause of neurodegeneration in progressive forms of multiple sclerosis is unknown. We investigated the impact of specific neuroinflammatory markers on human neurons to identify potential therapeutic targets for neuroprotection against chronic inflammation. METHODS: Surface immunocytochemistry directly visualized protease-activated receptor-1 (PAR1) and interleukin-1 (IL-1) receptors on neurons in human postmortem cortex in patients with and without neuroinflammatory lesions...
June 27, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28651603/a-systems-pharmacology-based-approach-to-identify-novel-kv1-3-channel-dependent-mechanisms-in-microglial-activation
#10
Srikant Rangaraju, Syed Ali Raza, Andrea Pennati, Qiudong Deng, Eric B Dammer, Duc Duong, Michael W Pennington, Malu G Tansey, James J Lah, Ranjita Betarbet, Nicholas T Seyfried, Allan I Levey
BACKGROUND: Kv1.3 potassium channels regulate microglial functions and are overexpressed in neuroinflammatory diseases. Kv1.3 blockade may selectively inhibit pro-inflammatory microglia in neurological diseases but the molecular and cellular mechanisms regulated by Kv1.3 channels are poorly defined. METHODS: We performed immunoblotting and flow cytometry to confirm Kv1.3 channel upregulation in lipopolysaccharide (LPS)-activated BV2 microglia and in brain mononuclear phagocytes freshly isolated from LPS-treated mice...
June 26, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28651542/evidence-for-an-early-innate-immune-response-in-the-motor-cortex-of-als
#11
Javier H Jara, Barış Genç, Macdonell J Stanford, Peter Pytel, Raymond P Roos, Sandra Weintraub, M Marsel Mesulam, Eileen H Bigio, Richard J Miller, P Hande Özdinler
BACKGROUND: Recent evidence indicates the importance of innate immunity and neuroinflammation with microgliosis in amyotrophic lateral sclerosis (ALS) pathology. The MCP1 (monocyte chemoattractant protein-1) and CCR2 (CC chemokine receptor 2) signaling system has been strongly associated with the innate immune responses observed in ALS patients, but the motor cortex has not been studied in detail. METHODS: After revealing the presence of MCP1 and CCR2 in the motor cortex of ALS patients, to elucidate, visualize, and define the timing, location and the extent of immune response in relation to upper motor neuron vulnerability and progressive degeneration in ALS, we developed MCP1-CCR2-hSOD1(G93A) mice, an ALS reporter line, in which cells expressing MCP1 and CCR2 are genetically labeled by monomeric red fluorescent protein-1 and enhanced green fluorescent protein, respectively...
June 26, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28646890/influence-of-type-i-ifn-signaling-on-anti-mog-antibody-mediated-demyelination
#12
Carsten Tue Berg, Reza Khorooshi, Nasrin Asgari, Trevor Owens
BACKGROUND: Antibodies with specificity for myelin oligodendrocyte glycoprotein (MOG) are implicated in multiple sclerosis and related diseases. The pathogenic importance of anti-MOG antibody in primary demyelinating pathology remains poorly characterized. OBJECTIVE: The objective of this study is to investigate whether administration of anti-MOG antibody would be sufficient for demyelination and to determine if type I interferon (IFN) signaling plays a similar role in anti-MOG antibody-mediated pathology, as has been shown for neuromyelitis optica-like pathology...
June 24, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28646884/the-increased-concentration-of-macrophage-migration-inhibitory-factor-in-serum-and-cerebrospinal-fluid-of-patients-with-tick-borne-encephalitis
#13
Sambor Grygorczuk, Miłosz Parczewski, Renata Świerzbińska, Piotr Czupryna, Anna Moniuszko, Justyna Dunaj, Maciej Kondrusik, Sławomir Pancewicz
BACKGROUND: Host factors determining the clinical presentation of tick-borne encephalitis (TBE) are not fully elucidated. The peripheral inflammatory response to TBE virus is hypothesized to facilitate its entry into central nervous system by disrupting the blood-brain barrier with the involvement of a signaling route including Toll-like receptor 3 (TLR3) and pro-inflammatory cytokines macrophage migration inhibitory factor (MIF), tumor necrosis factor-α (TNFα), and interleukin-1 beta (IL-1β)...
June 24, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28645333/sac-1004-a-vascular-leakage-blocker-reduces-cerebral-ischemia-reperfusion-injury-by-suppressing-blood-brain-barrier-disruption-and-inflammation
#14
Haiying Zhang, Joon Ha Park, Sony Maharjan, Jeong Ae Park, Kyu-Sung Choi, Hyojin Park, Yoonjeong Jeong, Ji Hyeon Ahn, In Hye Kim, Jae-Chul Lee, Jeong Hwi Cho, In-Kyu Lee, Choong Hyun Lee, In Koo Hwang, Young-Myeong Kim, Young-Ger Suh, Moo-Ho Won, Young-Guen Kwon
BACKGROUND: Blood-brain barrier (BBB) breakdown and inflammation are critical events in ischemic stroke, contributing to aggravated brain damage. The BBB mainly consists of microvascular endothelial cells sealed by tight junctions to protect the brain from blood-borne substances. Thus, the maintenance of BBB integrity may be a potential target for neuroprotection. Sac-1004, a pseudo-sugar derivative of cholesterol, enhances the endothelial barrier by the stabilization of the cortical actin ring...
June 23, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28645309/herpes-simplex-virus-1-infects-the-olfactory-bulb-shortly-following-ocular-infection-and-exhibits-a-long-term-inflammatory-profile-in-the-form-of-effector-and-hsv-1-specific-t-cells
#15
Chandra M Menendez, Daniel J J Carr
BACKGROUND: Herpes simplex virus 1 (HSV-1) infection can result in a life-threatening condition known as herpes simplex encephalitis (HSE). Trafficking patterns by which the virus reaches the central nervous system (CNS) following ocular infection are unresolved. We evaluated early viral dissemination pathways following ocular infection that involve trafficking to the olfactory bulb (OB). Additionally, we have characterized the capacity of HSV-1 to establish latency within OB tissue and profiled the local T lymphocyte response over the course of the acute infection into latency...
June 23, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28645297/interleukin-1-receptor-type-1-is-overexpressed-in-neurons-but-not-in-glial-cells-within-the-rat-superficial-spinal-dorsal-horn-in-complete-freund-adjuvant-induced-inflammatory-pain
#16
Krisztina Holló, László Ducza, Zoltán Hegyi, Klaudia Dócs, Krisztina Hegedűs, Erzsébet Bakk, Ildikó Papp, Gréta Kis, Zoltán Mészár, Zsuzsanna Bardóczi, Miklós Antal
BACKGROUND: All known biological functions of the pro-inflammatory cytokine interleukin-1β (IL-1β) are mediated by type 1 interleukin receptor (IL-1R1). IL-1β-IL-1R1 signaling modulates various neuronal functions including spinal pain processing. Although the role of IL-1β in pain processing is generally accepted, there is a discussion in the literature whether IL-1β exerts its effect on spinal pain processing by activating neuronal or glial IL-1R1. To contribute to this debate, here we investigated the expression and cellular distribution of IL-1R1 in the superficial spinal dorsal horn in control animals and also in inflammatory pain...
June 23, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28645295/identification-of-the-flotillin-1-2-heterocomplex-as-a-target-of-autoantibodies-in-bona-fide-multiple-sclerosis
#17
S Hahn, G Trendelenburg, M Scharf, Y Denno, S Brakopp, B Teegen, C Probst, K P Wandinger, M Buttmann, A Haarmann, F Szabados, M Vom Dahl, T Kümpfel, P Eichhorn, H Gold, F Paul, S Jarius, N Melzer, W Stöcker, L Komorowski
BACKGROUND: Autoantibodies, in particular those against aquaporin-4 and myelin-oligodendrocyte glycoprotein (MOG), aid as biomarkers in the differential diagnosis of demyelination. Here, we report on discovery of autoantibodies against flotillin in patients with multiple sclerosis (MS). METHODS: The target antigen was identified by histo-immunoprecipitation using the patients' sera and cryosections of rat or pig cerebellum combined with mass spectrometrical analysis...
June 23, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28645275/rapid-monocyte-infiltration-following-retinal-detachment-is-dependent-on-non-canonical-il6-signaling-through-gp130
#18
Xinlei Wang, Eric B Miller, Mayank Goswami, Pengfei Zhang, Kaitryn E Ronning, Sarah J Karlen, Robert J Zawadzki, Edward N Pugh, Marie E Burns
BACKGROUND: Retinal detachment (RD) can lead to proliferative vitreoretinopathy (PVR), a leading cause of intractable vision loss. PVR is associated with a cytokine storm involving common proinflammatory molecules like IL6, but little is known about the source and downstream signaling of IL6 and the consequences for the retina. Here, we investigated the early immune response and resultant cytokine signaling following RD in mice. METHODS: RD was induced in C57BL/6 J and IL6 knockout mice, and the resulting inflammatory response was examined using immunohistochemistry and flow cytometry...
June 23, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28629465/natural-igm-antibodies-that-bind-neoepitopes-exposed-as-a-result-of-spinal-cord-injury-drive-secondary-injury-by-activating-complement
#19
Aarti Narang, Fei Qiao, Carl Atkinson, Hong Zhu, Xiaofeng Yang, Liudmila Kulik, V Michael Holers, Stephen Tomlinson
BACKGROUND: Natural IgM antibodies (Abs) function as innate immune sensors of injury via recognition of neoepitopes expressed on damaged cells, although how this recognition systems function following spinal cord injury (SCI) exposes various neoepitopes and their precise nature remains largely unknown. Here, we investigated the role of two natural IgM monoclonal Abs (mAbs), B4 and C2, that recognize post-ischemic neoepitopes following ischemia and reperfusion in other tissues. METHODS: Identification of post-SCI expressed neoepitopes was examined using previously characterized monoclonal Abs (B4 and C2 mAbs)...
June 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28610608/isoliquiritigenin-alleviates-early-brain-injury-after-experimental-intracerebral-hemorrhage-via-suppressing-ros-and-or-nf-%C3%AE%C2%BAb-mediated-nlrp3-inflammasome-activation-by-promoting-nrf2-antioxidant-pathway
#20
Jun Zeng, Yizhao Chen, Rui Ding, Liang Feng, Zhenghao Fu, Shuo Yang, Xinqing Deng, Zhichong Xie, Shizhong Zheng
BACKGROUND: Intracerebral hemorrhage (ICH) induces potently oxidative stress responses and inflammatory processes. Isoliquiritigenin (ILG) is a flavonoid with a chalcone structure and can activate nuclear factor erythroid-2 related factor 2 (Nrf2)-mediated antioxidant system, negatively regulate nuclear factor-κB (NF-κB) and nod-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome pathways, but its role and potential molecular mechanisms in the pathology following ICH remain unclear...
June 13, 2017: Journal of Neuroinflammation
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