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Journal of Neuroinflammation

Xiao-Pei Yang, Ji-Yang Fu, Rui-Cheng Yang, Wen-Tong Liu, Tao Zhang, Bo Yang, Ling Miao, Bei-Bei Dou, Chen Tan, Huan-Chun Chen, Xiang-Ru Wang
BACKGROUND: Streptococcus suis serotype 2 (SS2) is an important zoonotic bacterial pathogen in both humans and animals, which can cause high morbidity and mortality. Meningitis is one of the major clinical manifestations of SS2 infection. However, the specific process of SS2 meningitis and its molecular mechanisms remain unclear. Epidermal growth factor receptor (EGFR) has been reported to initiate transduction of intracellular signals and regulate host inflammatory responses. Whether and how EGFR contributes to the development of S...
October 19, 2016: Journal of Neuroinflammation
Annukka Pietikäinen, Mikael Maksimow, Tommi Kauko, Saija Hurme, Marko Salmi, Jukka Hytönen
BACKGROUND: Lyme neuroborreliosis (LNB) is one of the manifestations of Lyme disease. Although it is known that immune reaction of LNB patients is dominated by Th1 and Th2 responses and patients have elevated numbers of B cells in their cerebrospinal fluid (CSF), not all the cells involved in inflammation and cytokine secretion have been characterized. The current diagnostics of LNB is based on intrathecal production of antibodies. In recent years, the measurement of chemokine CXCL13 concentration from the CSF has been introduced as a new promising diagnostic tool for LNB to complement the antibody-based diagnostic methods...
October 18, 2016: Journal of Neuroinflammation
Christian Wächter, Lee E Eiden, Nedye Naumann, Candan Depboylu, Eberhard Weihe
BACKGROUND: The majority of investigations on HIV-associated neurocognitive disorders (HAND) neglect the cerebellum in spite of emerging evidence for its role in higher cognitive functions and dysfunctions in common neurodegenerative diseases. METHODS: We systematically investigated the molecular and cellular responses of the cerebellum as contributors to lentiviral infection-induced neurodegeneration, in the simian immunodeficiency virus (SIV)-infected rhesus macaque model for HIV infection and HAND...
October 14, 2016: Journal of Neuroinflammation
Kenneth I Strauss, Kost V Elisevich
BACKGROUND: Epilepsy patients have distinct immune/inflammatory cell profiles and inflammatory mediator levels in the blood. Although the neural origin of inflammatory cells and mediators has been implied, few studies have measured these inflammatory components in the human brain itself. This study examines the brain levels of chemokines (8), cytokines (14), and vascular injury mediators (3) suspected of being altered in epilepsy. METHODS: Soluble protein extracts of fresh frozen resected hippocampus, entorhinal cortex, and temporal cortex from 58 medically refractory mesial temporal lobe epilepsy subjects and 4 nonepileptic neurosurgical subjects were assayed for 25 inflammation-related mediators using ultrasensitive low-density arrays...
October 13, 2016: Journal of Neuroinflammation
Yenis M Gutierrez-Murgas, Gwenn Skar, Danielle Ramirez, Matthew Beaver, Jessica N Snowden
BACKGROUND: Shunt infection is a frequent and serious complication in the surgical treatment in hydrocephalus. Previous studies have shown an attenuated immune response to these biofilm-mediated infections. We proposed that IL-10 reduces the inflammatory response to Staphylococcus epidermidis (S. epidermidis) CNS catheter infection. METHODS: In this study, a murine model of catheter-associated S. epidermidis biofilm infection in the CNS was generated based on a well-established similar model for S...
October 13, 2016: Journal of Neuroinflammation
Ruihe Lin, Jingli Cai, Eric W Kostuk, Robert Rosenwasser, Lorraine Iacovitti
BACKGROUND: Dimethyl fumarate (DMF), working via its metabolite monomethylfumarate (MMF), acts as a potent antioxidant and immunomodulator in animal models of neurologic disease and in patients with multiple sclerosis. These properties and their translational potential led us to investigate whether DMF/MMF could also protect at-risk and/or dying neurons in models of ischemic stroke in vitro and in vivo. Although the antioxidant effects have been partially addressed, the benefits of DMF immunomodulation after ischemic stroke still need to be explored...
October 13, 2016: Journal of Neuroinflammation
Ai-Ling Chen, Xi Sun, Wei Wang, Jin-Feng Liu, Xin Zeng, Jing-Fan Qiu, Xin-Jian Liu, Yong Wang
BACKGROUND: Immunosuppression has been described as a consequence of brain injury and infection by different mechanisms. Angiostrongylus cantonensis can cause injury to the central nervous system and eosinophilic meningitis to human. Both T cell and B cell immunity play an essential role in the resistance of the infection. However, whether brain injury caused by A. cantonensis infection can lead to immunosuppression is not clear. Therefore, the present study sought to observe the alteration of immune responses in mice infected with A...
October 12, 2016: Journal of Neuroinflammation
Yuping Li, Ke Pan, Lin Chen, Jiao-Lin Ning, Xiaojun Li, Ting Yang, Niccolò Terrando, Jianteng Gu, Guocai Tao
BACKGROUND: Postoperative cognitive dysfunction (POCD) is a common complication after surgery, especially amongst elderly patients. Neuroinflammation and iron homeostasis are key hallmarks of several neurological disorders. In this study, we investigated the role of deferoxamine (DFO), a clinically used iron chelator, in a mouse model of surgery-induced cognitive dysfunction and assessed its neuroprotective effects on neuroinflammation, oxidative stress, and memory function. METHODS: A model of laparotomy under general anesthesia and analgesia was used to study POCD...
October 12, 2016: Journal of Neuroinflammation
Brenna M Flannery, Donald A Bruun, Douglas J Rowland, Christopher N Banks, Adam T Austin, David L Kukis, Yonggang Li, Byron D Ford, Daniel J Tancredi, Jill L Silverman, Simon R Cherry, Pamela J Lein
BACKGROUND: Acute intoxication with organophosphorus (OP) cholinesterase inhibitors can trigger convulsions that progress to life-threatening status epilepticus. Survivors face long-term morbidity including mild-to-severe decline in memory. It is posited that neuroinflammation plays a key role in the pathogenesis of OP-induced neuropsychiatric deficits. Rigorous testing of this hypothesis requires preclinical models that recapitulate relevant phenotypic outcomes. Here, we describe a rat model of acute intoxication with the OP diisopropylfluorophosphate (DFP) that exhibits persistent neuroinflammation and cognitive impairment...
October 12, 2016: Journal of Neuroinflammation
Paschalis Theotokis, Olga Touloumi, Roza Lagoudaki, Evangelia Nousiopoulou, Evangelia Kesidou, Spyridon Siafis, Theodoros Tselios, Athanasios Lourbopoulos, Dimitrios Karacostas, Nikolaos Grigoriadis, Constantina Simeonidou
BACKGROUND: Nogo-A and its putative receptor NgR are considered to be among the inhibitors of axonal regeneration in the CNS. However, few studies so far have addressed the issue of local NgR complex multilateral localization within inflammation in an MS mouse model of autoimmune demyelination. METHODS: Chronic experimental autoimmune encephalomyelitis (EAE) was induced in C57BL/6 mice. Analyses were performed on acute (days 18-22) and chronic (day 50) time points and compared to controls...
October 11, 2016: Journal of Neuroinflammation
Frances Corrigan, Kimberley A Mander, Anna V Leonard, Robert Vink
BACKGROUND: The neuroinflammatory response following traumatic brain injury (TBI) is known to be a key secondary injury factor that can drive ongoing neuronal injury. Despite this, treatments that have targeted aspects of the inflammatory pathway have not shown significant efficacy in clinical trials. MAIN BODY: We suggest that this may be because classical inflammation only represents part of the story, with activation of neurogenic inflammation potentially one of the key initiating inflammatory events following TBI...
October 11, 2016: Journal of Neuroinflammation
Jing Qiu, Zhongjun Yan, Kai Tao, Yansong Li, Yuqian Li, Jingchen Li, Yushu Dong, Dayun Feng, Huisheng Chen
BACKGROUND: Astrocyte-mediated neuroinflammation plays a critical role in ischemic stroke-induced secondary cerebral injury. Previous studies have suggested that the dopamine D2 receptor (DRD2) acts as a key target in regulating the neuroinflammatory response. However, the underlying molecular mechanisms are still unknown, and effective DRD2 agonists are lacking. In the present study, we examined the anti-inflammatory and neuroprotective effects of sinomenine (Sino), a monomeric compound with potential immunoregulatory properties in nervous system...
October 10, 2016: Journal of Neuroinflammation
Maria Pannell, Dominika Labuz, Melih Ö Celik, Jacqueline Keye, Arvind Batra, Britta Siegmund, Halina Machelska
BACKGROUND: During the inflammation which occurs following nerve damage, macrophages are recruited to the site of injury. Phenotypic diversity is a hallmark of the macrophage lineage and includes pro-inflammatory M1 and anti-inflammatory M2 populations. Our aim in this study was to investigate the ability of polarized M0, M1, and M2 macrophages to secrete opioid peptides and to examine their relative contribution to the modulation of neuropathic pain. METHODS: Mouse bone marrow-derived cells were cultured as unstimulated M0 macrophages or were stimulated into an M1 phenotype using lipopolysaccharide and interferon-γ or into an M2 phenotype using interleukin-4...
October 7, 2016: Journal of Neuroinflammation
Giovanni Nardo, Maria Chiara Trolese, Giuseppe de Vito, Roberta Cecchi, Nilo Riva, Giorgia Dina, Paul R Heath, Angelo Quattrini, Pamela J Shaw, Vincenzo Piazza, Caterina Bendotti
BACKGROUND: Increasing evidence suggests that the immune system has a beneficial role in the progression of amyotrophic lateral sclerosis (ALS) although the mechanism remains unclear. Recently, we demonstrated that motor neurons (MNs) of C57SOD1(G93A) mice with slow disease progression activate molecules classically involved in the cross-talk with the immune system. This happens a lot less in 129SvSOD1(G93A) mice which, while expressing the same amount of transgene, had faster disease progression and earlier axonal damage...
October 7, 2016: Journal of Neuroinflammation
Xin Sun, Zachary B Jones, Xiao-Ming Chen, Libing Zhou, Kwok-Fai So, Yi Ren
Spinal cord injury (SCI) is a devastating event that results in significant physical disabilities for affected individuals. Apart from local injury within the spinal cord, SCI patients develop a variety of complications characterized by multiple organ dysfunction or failure. These disorders, such as neurogenic pain, depression, lung injury, cardiovascular disease, liver damage, kidney dysfunction, urinary tract infection, and increased susceptibility to pathogen infection, are common in injured patients, hinder functional recovery, and can even be life threatening...
October 6, 2016: Journal of Neuroinflammation
Qiuying Zhao, Xiaohui Wu, Shuo Yan, Xiaofang Xie, Yonghua Fan, Jinqiang Zhang, Cheng Peng, Zili You
BACKGROUND: Discoveries that microglia-mediated neuroinflammation is involved in the pathological process of depression provided a new strategy for novel antidepressant therapy. Peroxisome proliferator-activated receptor γ (PPARγ) is a nuclear receptor regulating inflammation and microglial polarization and, therefore, a potential target for resolving depressive disorders. Our hypothesis was that antidepressant effects could be achieved through anti-inflammatory and neuroprotective activities by PPARγ-dependent microglia-modulating agents...
October 4, 2016: Journal of Neuroinflammation
Jian Zhan, Wenyi Qin, Ying Zhang, Jing Jiang, Hongmei Ma, Qiongli Li, Yong Luo
BACKGROUND: Zinc finger protein A20 (tumor necrosis factor alpha-induced protein 3) functions as a potent negative feedback inhibitor of the nuclear factor-kB (NF-kB) signaling. It exerts these effects by interrupting the activation of IkB kinase beta (IKKβ), the most critical kinase in upstream of NF-kB, and thereby controlling inflammatory homeostasis. We reported previously that electroacupuncture (EA) could effectively suppress IKKβ activation. However, the mechanism underlying these effects was unclear...
October 3, 2016: Journal of Neuroinflammation
Kathryn E Hopperton, Marc-Olivier Trépanier, Vanessa Giuliano, Richard P Bazinet
BACKGROUND: Neuroinflammation is a proposed mechanism by which Alzheimer's disease (AD) pathology potentiates neuronal death and cognitive decline. Consumption of omega-3 polyunsaturated fatty acids (PUFA) is associated with a decreased risk of AD in human observational studies and exerts protective effects on cognition and pathology in animal models. These fatty acids and molecules derived from them are known to have anti-inflammatory and pro-resolving properties, presenting a potential mechanism for these protective effects...
September 29, 2016: Journal of Neuroinflammation
Priya Revathikumar, Filip Bergqvist, Srividya Gopalakrishnan, Marina Korotkova, Per-Johan Jakobsson, Jon Lampa, Erwan Le Maître
BACKGROUND: The cholinergic anti-inflammatory pathway (CAP) primarily functions through acetylcholine (ACh)-alpha7 nicotinic acetylcholine receptor (α7nAChR) interaction on macrophages to control peripheral inflammation. Interestingly, ACh can also bind α7nAChRs on microglia resulting in neuroprotective effects. However, ACh effects on astrocytes remain elusive. Here, we investigated the effects of nicotine, an ACh receptor agonist, on the cytokine and cholinesterase production of immunocompetent human astrocytes stimulated with interleukin 1β (IL-1β) in vitro...
September 29, 2016: Journal of Neuroinflammation
Slava Rom, Viviana Zuluaga-Ramirez, Nancy L Reichenbach, Holly Dykstra, Sachin Gajghate, Pal Pacher, Yuri Persidsky
BACKGROUND: Blood-brain barrier (BBB) dysfunction/disruption followed by leukocyte infiltration into the brain causes neuroinflammation and contributes to morbidity in multiple sclerosis, encephalitis, traumatic brain injury, and stroke. The identification of pathways that decreases the inflammatory potential of leukocytes would prevent such injury. Poly(ADP-ribose) polymerase 1 (PARP) controls various genes via its interaction with myriad transcription factors. Selective PARP inhibitors have appeared lately as potent anti-inflammatory tools...
September 27, 2016: Journal of Neuroinflammation
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