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Neuroinflammation

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https://www.readbyqxmd.com/read/29458199/alpha-synuclein-oligomers-impair-memory-through-glial-cell-activation-and-via-toll-like-receptor-2
#1
Pietro La Vitola, Claudia Balducci, Milica Cerovic, Giulia Santamaria, Edoardo Brandi, Federica Grandi, Laura Caldinelli, Laura Colombo, Maria Grazia Morgese, Luigia Trabace, Loredano Pollegioni, Diego Albani, Gianluigi Forloni
Alpha-synuclein oligomers (α-synOs) are emerging as crucial factors in the pathogenesis of synucleinopathies. Although the connection between neuroinflammation and α-syn still remains elusive, increasing evidence suggests that extracellular moieties activate glial cells leading to neuronal damage. Using an acute mouse model, we explored whether α-synOs induce memory impairment in association to neuroinflammation, addressing Toll-like receptors 2 and 4 (TLR2 and TLR4) involvement. We found that α-synOs abolished mouse memory establishment in association to hippocampal glial activation...
February 16, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29458193/attenuation-of-neuro-inflammation-improves-survival-and-neurodegeneration-in-a-mouse-model-of-severe-neonatal-hyperbilirubinemia
#2
Simone Vodret, Giulia Bortolussi, Alessandra Iaconcig, Elena Martinelli, Claudio Tiribelli, Andrés F Muro
All pre-term newborns and a high proportion of term newborns develop neonatal jaundice. Neonatal jaundice is usually a benign condition and self-resolves within few days after birth. However, a combination of unfavorable complications may lead to acute hyperbilirubinemia. Excessive hyperbilirubinemia may be toxic for the developing nervous system leading to severe neurological damage and death by kernicterus. Survivors show irreversible neurological deficits such as motor, sensitive and cognitive abnormalities...
February 16, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29458118/neuroprotective-effect-of-melatonin-against-lipopolysaccharide-induced-depressive-like-behavior-in-mice
#3
E H Taniguti, Y S Ferreira, I J V Stupp, E B Fraga-Junior, C B Mendonça, F L Rossi, H N Ynoue, D L Doneda, L Lopes, E Lima, Z S Buss, S Vandresen-Filho
Accumulating evidence indicates an interaction between inflammation and depression since increased levels of pro-inflammatory cytokines are associated with depression-related symptoms. Melatonin is a hormone synthesized and secreted by the pineal gland with antioxidant, anti-inflammatory and antidepressant-like effects. In this way, it would be interesting to evaluate the putative antidepressant-like effect of melatonin treatment in an acute inflammation mice model of depression. The present study aimed to investigate the effect of melatonin treatment on lipopolysaccharide (LPS) induced depressive-like behavior, neuroinflammation, oxidative stress and alteration on brain-derived neurotrophic fator (BDNF) levels...
February 16, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29458098/spermine-protects-from-lps-induced-memory-deficit-via-bdnf-and-trkb-activation
#4
Pâmella K Frühauf-Perez, Fernanda R Temp, Micheli M Pillat, Cristiane Signor, Arithane Lorena Wendel, Henning Ulrich, Carlos F Mello, Maribel A Rubin
Lipopolysaccharide (LPS) has been long known to promote neuroinflammation and learning and memory deficits. Since spermine, one of the main natural polyamines in the central nervous system, protects from LPS-induced memory deficit by a mechanism that comprises GluN2B receptors, the aim of the present study was to determine whether brain-derived neurotrophic factor (BDNF), tropomyosin-related kinase B (TrkB) receptor and cAMP response element binding (CREB) are involved in this protective effect of spermine...
February 16, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29456585/neuroinflammation-and-neurohormesis-in-the-pathogenesis-of-alzheimer-s-disease-and-alzheimer-linked-pathologies-modulation-by-nutritional-mushrooms
#5
REVIEW
Angela Trovato Salinaro, Manuela Pennisi, Rosanna Di Paola, Maria Scuto, Rosalia Crupi, Maria Teresa Cambria, Maria Laura Ontario, Mario Tomasello, Maurizio Uva, Luigi Maiolino, Edward J Calabrese, Salvatore Cuzzocrea, Vittorio Calabrese
Human life develops and expands not only in time and space, but also in the retrograde permanent recollection and interweaving of memories. Therefore, individual human identity depends fully on a proper access to the autobiographical memory. Such access is hindered or lost under pathological conditions such as Alzheimer's disease, including recently associated oxidant pathologies, such as ocular neural degeneration occurring in glaucoma or neurosensorial degeneration occurring in Menière's disease. Oxidative stress and altered antioxidant systems have been suggested to play a role in the aetiology of major neurodegenerative disorders, and altered expression of genes sensing oxidative stress, as well as decreased cellular stress response mechanisms could synergistically contribute to the course of these oxidant disorders...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29456161/the-effect-of-lrrk2-mutations-on-the-cholinergic-system-in-manifest-and-premanifest-stages-of-parkinson-s-disease-a-cross-sectional-pet-study
#6
Shu-Ying Liu, Daryl J Wile, Jessie Fanglu Fu, Jason Valerio, Elham Shahinfard, Siobhan McCormick, Rostom Mabrouk, Nasim Vafai, Jess McKenzie, Nicole Neilson, Alexandra Perez-Soriano, Julieta E Arena, Mariya Cherkasova, Piu Chan, Jing Zhang, Cyrus P Zabetian, Jan O Aasly, Zbigniew K Wszolek, Martin J McKeown, Michael J Adam, Thomas J Ruth, Michael Schulzer, Vesna Sossi, A Jon Stoessl
BACKGROUND: Markers of neuroinflammation are increased in some patients with LRRK2 Parkinson's disease compared with individuals with idiopathic Parkinson's disease, suggesting possible differences in disease pathogenesis. Previous PET studies have suggested amplified dopamine turnover and preserved serotonergic innervation in LRRK2 mutation carriers. We postulated that patients with LRRK2 mutations might show abnormalities of central cholinergic activity, even before the diagnosis of Parkinson's disease...
February 15, 2018: Lancet Neurology
https://www.readbyqxmd.com/read/29454994/epigallocatechin-3-gallate-loaded-pegylated-plga-nanoparticles-a-new-anti-seizure-strategy-for-temporal-lobe-epilepsy
#7
Amanda Cano, Miren Ettcheto, Marta Espina, Carmen Auladell, Ana Cristina Calpena, Jaume Folch, Marta Barenys, Elena Sánchez-López, Antoni Camins, Maria Luisa García
Temporal lobe epilepsy is the most common type of pharmacoresistant epilepsy in adults. Epigallocatechin-3-gallate has aroused much interest because of its multiple therapeutic effects, but its instability compromises the potential effectiveness. PEGylated-PLGA nanoparticles of Epigallocatechin-3-gallate were designed to protect the drug and to increase the brain delivery. Nanoparticles were prepared by the double emulsion method and cytotoxicity, behavioural, Fluoro-Jade C, Iba1 and GFAP immunohistochemistry studies were carried out to determine their effectiveness...
February 15, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29454581/emerging-roles-of-microglial-cathepsins-in-neurodegenerative-disease
#8
REVIEW
Jessica R Lowry, Andis Klegeris
Alzheimer's disease (AD) is one of the leading causes of dementia, and its prevalence is expected to increase dramatically due to the aging global population. Microglia-driven neuroinflammation may contribute to the progression of AD. Microglia, the immune cells of the central nervous system (CNS), become chronically activated by the pathological proteins of AD including amyloid-β peptides (Aβ). Such adversely activated microglia secrete mediators that promote inflammation and damage neurons. Cathepsins are proteases that are expressed by all brain cell types, and most of them are found both intra- and extra-cellularly...
February 15, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29454374/effects-of-umbilical-cord-blood-cells-and-subtypes-to-reduce-neuroinflammation-following-perinatal-hypoxic-ischemic-brain-injury
#9
Courtney A McDonald, Tayla R Penny, Madison C B Paton, Amy E Sutherland, Lakshmi Nekkanti, Tamara Yawno, Margie Castillo-Melendez, Michael C Fahey, Nicole M Jones, Graham Jenkin, Suzanne L Miller
BACKGROUND: It is well understood that hypoxic-ischemic (HI) brain injury during the highly vulnerable perinatal period can lead to cerebral palsy, the most prevalent cause of chronic disability in children. Recently, human clinical trials have reported safety and some efficacy following treatment of cerebral palsy using umbilical cord blood (UCB) cells. UCB is made up of many different cell types, including endothelial progenitor cells (EPCs), T regulatory cells (Tregs), and monocyte-derived suppressor cells (MDSCs)...
February 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29454354/cerebrospinal-fluid-level-of-nogo-receptor-1-antagonist-lateral-olfactory-tract-usher-substance-lotus-correlates-inversely-with-the-extent-of-neuroinflammation
#10
Keita Takahashi, Hideyuki Takeuchi, Yuji Kurihara, Hiroshi Doi, Misako Kunii, Kenichi Tanaka, Haruko Nakamura, Ryoko Fukai, Atsuko Tomita-Katsumoto, Mikiko Tada, Yuichi Higashiyama, Hideto Joki, Shigeru Koyano, Kohtaro Takei, Fumiaki Tanaka
BACKGROUND: Although inflammation in the central nervous system is responsible for multiple neurological diseases, the lack of appropriate biomarkers makes it difficult to evaluate inflammatory activities in these diseases. Therefore, a new biomarker reflecting neuroinflammation is required for accurate diagnosis, appropriate therapy, and comprehension of pathogenesis of these neurological disorders. We previously reported that the cerebrospinal fluid (CSF) concentration of lateral olfactory tract usher substance (LOTUS), which promotes axonal growth as a Nogo receptor 1 antagonist, negatively correlates with disease activity in multiple sclerosis, suggesting that variation in LOTUS reflects the inflammatory activities and is a useful biomarker to evaluate the disease activity...
February 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29454265/supplementation-of-lycopene-attenuates-lipopolysaccharide-induced-amyloidogenesis-and-cognitive-impairments-via-mediating-neuroinflammation-and-oxidative-stress
#11
Jia Wang, Lixia Li, Zhuo Wang, Yifan Cui, Xintong Tan, Tian Yuan, Qian Liu, Zhigang Liu, Xuebo Liu
Neuroinflammation is documented to be the major culprit of Alzheimer's disease. Lycopene (LYC), a fat soluble carotenoid, exhibits neuroprotective function in several neurodegenerative disorders. However, the effects of LYC to countering systemic inflammation-induced amyloidogenesis and memory deficiency remain to be elucidated. In current study, 3-month-old male C57BL/6J mice were treated with 0.03% LYC (w/w, mixed into normal chow) for 5 weeks. The mice were then treated by intraperitoneal injection of LPS (0...
February 2, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29454065/impact-of-food-additives-on-the-gut-brain-axis
#12
Mary K Holder, Benoit Chassaing
The mammalian intestinal tract is heavily colonized with a complex community of micro-organisms, present at a very high density, and containing an estimated amount of 10 14 bacteria. The microbiota generally benefits the host, as it plays a central role in maturing the immune system, protecting against infection by entero-pathogens such as Clostridium difficile, and favoring nutrient digestion/energy extraction in our intestine. An altered microbiota, however, can become detrimental and lead to inflammation, metabolic disorders, and even altered behavior/neuroinflammation...
February 14, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29453985/zika-virus-infected-primary-microglia-impairs-npcs-proliferation-and-differentiation
#13
Jin Wang, Jing Liu, Rui Zhou, Xin Ding, Qipeng Zhang, Chenyu Zhang, Liang Li
Zika virus (ZIKV) can lead to severe birth defects especially microcephaly in newborns by infecting human neural progenitors and impairing brain development. However, as the resident immune cells in the brain, the role of microglia in the ZIKV pathology is not clearly defined. To understand the interplay between immune response and neural cells, we investigate the interaction between microglia and NPCs during ZIKV infection. Our results demonstrate that primary microglia infected with ZIKV induces an inflammatory response similar to that in human, producing high level of tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), interleukin 1β (IL-1β) and inducible nitric oxide synthase (iNOS)...
February 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29453978/venlafaxine-prevents-morphine-antinociceptive-tolerance-the-role-of-neuroinflammation-and-the-l-arginine-nitric-oxide-pathway
#14
Mohammad Taghi Mansouri, Bahareh Naghizadeh, Behnam Ghorbanzadeh, Soheila Alboghobeish, Neda Amirgholami, Gholamreza Houshmand, Omar Cauli
Opioid-induced neuroinflammation and the nitric oxide (NO) signal-transduction pathway are involved in the development of opioid analgesic tolerance. The antidepressant venlafaxine (VLF) modulates NO in nervous tissues, and so we investigated its effect on induced tolerance to morphine, neuroinflammation, and oxidative stress in mice. Tolerance to the analgesic effects of morphine were induced by injecting mice with morphine (50 mg/kg) once a day for three consecutive days; the effect of co-administration of VLF (5 or 40 mg/kg) with morphine was similarly tested in a separate group...
February 14, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29451906/brain-changes-due-to-hypoxia-during-light-anaesthesia-can-be-prevented-by-deepening-anaesthesia-a-study-in-rats
#15
Setayesh R Tasbihgou, Mina Netkova, Alain F Kalmar, Janine Doorduin, Michel M R F Struys, Regien G Schoemaker, Anthony R Absalom
In anaesthetic practice the risk of cerebral ischemic/hypoxic damage is thought to be attenuated by deep anaesthesia. The rationale is that deeper anaesthesia reduces cerebral oxygen demand more than light anaesthesia, thereby increasing the tolerance to ischemia or hypoxia. However, evidence to support this is scarce. We thus investigated the influence of light versus deep anaesthesia on the responses of rat brains to a period of hypoxia. In the first experiment we exposed adult male Wistar rats to deep or light propofol anaesthesia and then performed [18F]- Fludeoxyglucose (FDG) Positron Emission Tomography (PET) scans to verify the extent of cerebral metabolic suppression...
2018: PloS One
https://www.readbyqxmd.com/read/29450981/nurr1-promotes-neurogenesis-of-dopaminergic-neuron-and-represses-inflammatory-factors-in-the-transwell-coculture-system-of-neural-stem-cells-and-microglia
#16
Xiaoxiang Chen, Yuan Qian, Xiangpeng Wang, Zhiwei Tang, Jiaotian Xu, Hai Lin, Zhiyong Yang, Xiaobin Song, Di Lu, Jiazhi Guo, Ligong Bian, Yu Li, Lei Zhou, Xingli Deng
INTRODUCTION: Neural stem cells (NSCs) are the most promising cells for cell replacement therapy for Parkinson's disease (PD). However, a majority of the transplanted NSCs differentiated into glial cells, thereby limiting the clinical application. Previous studies indicated that chronic neuroinflammation plays a vital role in the degeneration of midbrain DA (mDA) neurons, which suggested the developing potential of therapies for PD by targeting the inflammatory processes. Thus, Nurr1 (nuclear receptor-related factor 1), a transcription factor, has been referred to play a pivotal role in both the differentiation of dopaminergic neurons in embryonic stages and the maintenance of the dopaminergic phenotype throughout life...
February 15, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29450697/endogenous-sex-steroids-dampen-neuroinflammation-and-improve-outcome-of-traumatic-brain-injury-in-mice
#17
Amy C Clevenger, Hoon Kim, Ernesto Salcedo, Joan C Yonchek, Krista M Rodgers, James E Orfila, Robert M Dietz, Nidia Quillinan, Richard J Traystman, Paco S Herson
The role of biological sex in short-term and long-term outcome after traumatic brain injury (TBI) remains controversial. The observation that exogenous female sex steroids (progesterone and estrogen) reduce brain injury coupled with a small number of clinical studies showing smaller injury in women suggest that sex steroids may play a role in outcome from TBI. We used the controlled cortical impact (CCI) model of TBI in mice to test the hypothesis that after CCI, female mice would demonstrate less injury than male mice, related to the protective role of endogenous steroids...
February 15, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29448961/nuclear-receptor-agonist-driven-modification-of-inflammation-and-amyloid-pathology-enhances-and-sustains-cognitive-improvements-in-a-mouse-model-of-alzheimer-s-disease
#18
Brad T Casali, Erin G Reed-Geaghan, Gary E Landreth
BACKGROUND: Alzheimer's disease (AD) is a highly prevalent neurodegenerative disorder characterized by pathological hallmarks of beta-amyloid plaque deposits, tau pathology, inflammation, and cognitive decline. Treatment remains a clinical obstacle due to lack of effective therapeutics. Agonists targeting nuclear receptors, such as bexarotene, reversed cognitive deficits regardless of treatment duration and age in murine models of AD. While bexarotene demonstrated marked efficacy in decreasing plaque levels following short-term treatment, prolonged treatment did not modulate plaque burden...
February 15, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29448957/brain-region-specific-enhancement-of-remyelination-and-prevention-of-demyelination-by-the-csf1r-kinase-inhibitor-blz945
#19
Nicolau Beckmann, Elisa Giorgetti, Anna Neuhaus, Stefan Zurbruegg, Nathalie Accart, Paul Smith, Julien Perdoux, Ludovic Perrot, Mark Nash, Sandrine Desrayaud, Peter Wipfli, Wilfried Frieauff, Derya R Shimshek
Multiple sclerosis (MS) is a chronic inflammatory disease affecting the central nervous system (CNS). While multiple effective immunomodulatory therapies for MS exist today, they lack the scope of promoting CNS repair, in particular remyelination. Microglia play a pivotal role in regulating myelination processes, and the colony-stimulating factor 1 (CSF-1) pathway is a key regulator for microglia differentiation and survival. Here, we investigated the effects of the CSF-1 receptor kinase inhibitor, BLZ945, on central myelination processes in the 5-week murine cuprizone model by non-invasive and longitudinal magnetic resonance imaging (MRI) and histology...
February 15, 2018: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/29447949/protective-effects-of-alpinae-oxyphyllae-fructus-extracts-on-lipopolysaccharide-induced-animal-model-of-alzheimer-s-disease
#20
Yunlong Wang, Mengshi Wang, Kaiyue Fan, Tongde Li, Tingxu Yan, Bo Wu, Kaishun Bi, Ying Jia
ETHNOPHARMACOLOGICAL RELEVANCE: Alpinae Oxyphyllae Fructus (AOF) with warming and tonifying the kidney and spleen, anti-salivation, anti-polyuria and anti-diarrhea functions is the dried ripe fruits of Alpinia oxyphylla Miq. (Zingiberaceae). As a traditional Chinese medicine, its application history is very long. AIMS OF THE STUDY: The purpose of our study is to investigate the effects of different solvent extracts from AOF on lipopolysaccharide (LPS)-induced animal model of Alzheimer's disease (AD) to elucidate the traditional medical theories with modern pharmacological methods and provide a reference for further clarifying its active components and mechanisms...
February 12, 2018: Journal of Ethnopharmacology
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