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https://www.readbyqxmd.com/read/29222781/cell-enumeration-assays-application-of-the-mtt-and-sulforhodamine-b-assays-to-lipopolysaccharide-stimulated-neonatal-rodent-microglia
#1
Laura Facci, Stephen D Skaper
Glial cell activation, in particular microglia, plays an important role in the pathogenesis of various neurodegenerative disorders as well as in chronic and neuropathic pain. This chapter compares two established cell enumeration assays, namely, the colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide assay and the protein-binding sulforhodamine B assay for microglia as a function of culture condition and activation state. The pros and cons of each are then described.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222778/astrocyte-microglia-cocultures-as-a-model-to-study-neuroinflammation
#2
Laura Facci, Massimo Barbierato, Stephen D Skaper
Glial cell activation plays an important role in the pathogenesis of various neurodegenerative disorders as well as in chronic and neuropathic pain. This chapter describes a model which allows one to assess the individual and combined contributions of astrocytes and microglia in response to a pro-inflammatory stimulus, with emphasis on ionotropic purinergic receptors.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222773/central-nervous-system-neuron-glia-co-culture-models-and-application-to-neuroprotective-agents
#3
Stephen D Skaper, Laura Facci
Glial cell activation plays an important role in the pathogenesis of various neurodegenerative disorders. This article presents a protocol for the preparation of cultures consisting of rat embryonic cortical neurons grown in the presence of cortical microglia, in which the glia are present in physical contact with the neurons or separated by a semipermeable membrane barrier. An example of how such systems can be used to evaluate potential neuroprotective agents will also be described.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29218049/immunoglobulins-g-from-sera-of-amyotrophic-lateral-sclerosis-patients-induce-oxidative-stress-and-upregulation-of-antioxidative-system-in-bv-2-microglial-cell-line
#4
Milena Milošević, Katarina Milićević, Iva Božić, Irena Lavrnja, Ivana Stevanović, Dunja Bijelić, Marija Dubaić, Irena Živković, Zorica Stević, Rashid Giniatullin, Pavle Andjus
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder with a very fast progression, no diagnostic tool for the presymptomatic phase, and still no effective treatment of the disease. Although ALS affects motor neurons, the overall pathophysiological condition points out to the non-cell autonomous mechanisms, where astrocytes and microglia play crucial roles in the disease progression. We have already shown that IgG from sera of ALS patients (ALS IgG) induce calcium transients and an increase in the mobility of acidic vesicles in cultured rat astrocytes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29217476/sumo1-impact-on-alzheimer-disease-pathology-in-an-amyloid-depositing-mouse-model
#5
Erin Knock, Shinsuke Matsuzaki, Hironori Takamura, Kanayo Satoh, Grace Rooke, Kyung Han, Hong Zhang, Agnieszka Staniszewski, Taiichi Katayama, Ottavio Arancio, Paul E Fraser
Small ubiquitin-related modifiers (SUMOs) conjugated or bound to target proteins can affect protein trafficking, processing and solubility. SUMOylation has been suggested to play a role in the amyloid plaque and neurofibrillary tangle pathology of Alzheimer disease (AD) and related neurodegenerative diseases. The current study examines the impact of SUMO1 on processing of the amyloid precursor protein (APP) leading to the production and deposition of the amyloid-β (Aβ) peptide. An in vivo model of these pathways was developed by the generation of double transgenic mice over-expressing human SUMO1 and a mutant APP...
December 4, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/29210074/white-matter-degeneration-in-vascular-and-other-ageing-related-dementias
#6
REVIEW
Yoshika Hase, Karen Horsburgh, Masafumi Ihara, Raj N Kalaria
Advances in neuroimaging have enabled greater understanding of the progression of cerebral degenerative processes associated with ageing-related dementias. Leukoaraiosis or rarefied white matter (WM) originally described on computed tomography is one of the most prominent changes which occurs in older age. White matter hyperintensities (WMH) evident on magnetic resonance imaging have become commonplace to describe WM changes in relation to cognitive dysfunction, types of stroke injury, cerebral small vessel disease and neurodegenerative disorders including Alzheimer's disease...
December 6, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29207890/artificial-mirnas-reduce-human-mutant-huntingtin-throughout-the-striatum-in-a-transgenic-sheep-model-of-huntington-s-disease
#7
Edith Pfister, Natalie Dinardo, Erica Mondo, Florie Borel, Faith Conroy, Cara Fraser, Gwladys Gernoux, Xin Han, Danjing Hu, Emily Johnson, Lori Kennington, PengPeng Liu, Suzanne Reid, Ellen Sapp, Petr Vodicka, Tim Kuchel, A Jennifer Morton, David Howland, Richard Moser, Miguel Sena-Esteves, Guangping Gao, Christian Mueller, Marian DiFiglia, Neil Aronin
Huntington's disease (HD) is a fatal neurodegenerative disease caused by a genetic expansion of the CAG repeat region in the huntingtin (HTT) gene. Studies in HD mouse models have shown that artificial miRNAs can reduce mutant HTT but evidence for their effectiveness and safety in larger animals is lacking. HD transgenic sheep express the full-length human HTT with 73 CAG repeats. We used AAV9 to unilaterally deliver to HD sheep striatum an artificial miRNA targeting exon 48 of the human HTT mRNA under control of two alternative promoters- U6 or CβA...
December 5, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/29207498/steppogenin-isolated-from-cudrania-tricuspidata-shows-antineuroinflammatory-effects-via-nf-%C3%AE%C2%BAb-and-mapk-pathways-in-lps-stimulated-bv2-and-primary-rat-microglial-cells
#8
Dong-Cheol Kim, Tran Hong Quang, Hyuncheol Oh, Youn-Chul Kim
Excessive microglial stimulation has been recognized in several neurodegenerative diseases, including Parkinson's disease (PD), Alzheimer's disease (AD), amyotropic lateral sclerosis (ALS), HIV-associated dementia (HAD), multiple sclerosis (MS), and stroke. When microglia are stimulated, they produce proinflammatory mediators and cytokines, including nitric oxide (NO) derived from inducible NO synthase (iNOS), prostaglandin E2 (PGE₂) derived from cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-12 (IL-12), and interleukin-6 (IL-6)...
December 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29201025/regulation-of-neuroinflammation-what-role-for-the-tumor-necrosis-factor-like-weak-inducer-of-apoptosis-fn14-pathway
#9
REVIEW
Audrey Boulamery, Sophie Desplat-Jégo
Observed in many central nervous system diseases, neuroinflammation (NI) proceeds from peripheral immune cell infiltration into the parenchyma, from cytokine secretion and from oxidative stress. Astrocytes and microglia also get activated and proliferate. NI manifestations and consequences depend on its context and on the acute or chronic aspect of the disease. The tumor necrosis factor-like weak inducer of apoptosis (TWEAK)/Fn14 pathway has been involved in chronic human inflammatory pathologies such as neurodegenerative, autoimmune, or malignant diseases...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29196883/magnesium-lithospermate-b-suppresses-lipopolysaccharide-induced-neuroinflammation-in-bv2-microglial-cells-and-attenuates-neurodegeneration-in-lipopolysaccharide-injected-mice
#10
Yaojun Tai, Yujiao Qiu, Zhicheng Bao
Chronic inflammation in the brain plays a critical role in major neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), and multiple sclerosis (MS). Microglia, the resident macrophages and intrinsic components of the central nervous system (CNS), appear to be the main effectors in this pathological process. Magnesium lithospermate B (MLB) is one of the major bioactive components of Radix Salviae miltiorrhizae, which has been documented to protect neurons against multiple types of neuronal injury...
December 1, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29196460/microglia-in-alzheimer-s-disease
#11
REVIEW
David V Hansen, Jesse E Hanson, Morgan Sheng
Proliferation and activation of microglia in the brain, concentrated around amyloid plaques, is a prominent feature of Alzheimer's disease (AD). Human genetics data point to a key role for microglia in the pathogenesis of AD. The majority of risk genes for AD are highly expressed (and many are selectively expressed) by microglia in the brain. There is mounting evidence that microglia protect against the incidence of AD, as impaired microglial activities and altered microglial responses to β-amyloid are associated with increased AD risk...
December 1, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29191947/a-proteomic-network-approach-across-the-als-ftd-disease-spectrum-resolves-clinical-phenotypes-and-genetic-vulnerability-in-human-brain
#12
Mfon E Umoh, Eric B Dammer, Jingting Dai, Duc M Duong, James J Lah, Allan I Levey, Marla Gearing, Jonathan D Glass, Nicholas T Seyfried
Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are neurodegenerative diseases with overlap in clinical presentation, neuropathology, and genetic underpinnings. The molecular basis for the overlap of these disorders is not well established. We performed a comparative unbiased mass spectrometry-based proteomic analysis of frontal cortical tissues from postmortem cases clinically defined as ALS, FTD, ALS and FTD (ALS/FTD), and controls. We also included a subset of patients with the C9orf72 expansion mutation, the most common genetic cause of both ALS and FTD Our systems-level analysis of the brain proteome integrated both differential expression and co-expression approaches to assess the relationship of these differences to clinical and pathological phenotypes...
November 30, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/29189146/transforming-growth-factor-beta-type-i-role-in-neurodegeneration-implications-for-alzheimer%C3%A2-s-disease
#13
Lisbell D Estrada, Luciana Oliveira-Cruz, Daniel Cabrera
Alzheimer's disease is a neurodegenerative condition affecting millions of people worldwide. Alzheimer's symptoms include memory loss and cognitive decline. Pathologically, the hallmarks of Alzheimer´s are the presence of Amyloid beta-plaques, neurofibrillary tangles, and neuronal loss. Unfortunately, no cure is presently available and current treatments are only symptomatic. Transforming growth factor beta type I (TGF-β1) is a trophic factor involved in neuronal development and synaptic plasticity...
November 28, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29183796/heat-shock-protein-70-suppresses-neuroinflammation-induced-by-%C3%AE-synuclein-in-astrocytes
#14
Wen-Wen Yu, Sheng-Nan Cao, Cai-Xia Zang, Lu Wang, Han-Yu Yang, Xiu-Qi Bao, Dan Zhang
Neuroinflammation triggered by activation of glial cells plays an important role in the pathophysiology of several neurodegenerative diseases including Parkinson's disease (PD). Besides microglia, astrocytes are also critical in initiating and perpetuating inflammatory process associated with PD. Heat shock protein 70 (Hsp70) is originally described as intracellular chaperone, however, recent study revealed that it had anti-inflammatory effects as well. The present study is designed to investigate whether Hsp70 mediates neuroinflammation in astrocytes...
November 25, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/29183158/critical-roles-of-glutaredoxin-in-brain-cells-implications-for-parkinson-s-disease
#15
Olga Gorelenkova Miller, John J Mieyal
SIGNIFICANCE: Glutaredoxin (Grx1), an evolutionarily conserved and ubiquitous enzyme, regulates redox signal transduction and protein redox homeostasis by catalyzing reversible S-glutathionylation. Grx1 plays different roles in different cell types. In Parkinson's disease (PD), Grx1 regulates apoptosis signaling in dopaminergic neurons, so that loss of Grx1 leads to increased cell death; in microglial cells, Grx1 regulates pro-inflammatory signaling, so that upregulation of Grx1 promotes cytokine production...
November 28, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29181847/achyranthes-bidentata-polypeptide-protects-dopaminergic-neurons-from-apoptosis-in-parkinson-s-disease-models-both-in-vitro-and-in-vivo
#16
Su Peng, Caiping Wang, Jinyu Ma, Ketao Jiang, Yuhui Jiang, Xiaosong Gu, Cheng Sun
BACKGROUND AND PURPOSE: Parkinson's disease (PD) is a neurodegenerative disorder closely associated with dopaminergic neuron loss. It is well documented that Achyranthes bidentata polypeptides (ABPP) are potent neuroprotective agents in several kinds of neurons. Therefore, we predicted that ABPP might play a beneficial role against PD by protecting dopaminergic neurons from apoptosis. EXPERIMENTAL APPROACH: The SH-SY5Y cells and primary rat dopaminergic neurons were pretreated with ABPPk, a purified fraction of ABPP, and then the cells were exposure to MPP+ to induce apoptosis...
November 27, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29180839/triggering-receptor-expressed-on-myeloid-cells-2-overexpression-inhibits-proinflammatory-cytokines-in-lipopolysaccharide-stimulated-microglia
#17
Xiaobao Zhang, Fang Yan, Jizheng Cui, Yong Wu, Hengfei Luan, Miaomiao Yin, Zhibin Zhao, Jiying Feng, Jinwei Zhang
Microglia play an important role in mediating inflammatory processes in the central nervous system (CNS). Triggering receptor expressed on myeloid cells 2 (TREM2) is a microglia-specific receptor and could decrease neuropathology in Alzheimer's disease (AD). However, the detailed mechanism remains unclear. This study was designed to elucidate the effect of TREM2 on microglia. We showed that lipopolysaccharide (LPS) stimulation significantly increases proinflammatory cytokines and suppressed TREM2 in microglia...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29179879/p2x4-a-fast-and-sensitive-purinergic-receptor
#18
REVIEW
Jaanus Suurväli, Pierre Boudinot, Jean Kanellopoulos, Sirje Rüütel Boudinot
Extracellular nucleotides have been recognized as important mediators of activation, triggering multiple responses via plasma membrane receptors known as P2 receptors. P2 receptors comprise P2X ionotropic receptors and G protein-coupled P2Y receptors. P2X receptors are expressed in many tissues, where they are involved in a number of functions including synaptic transmission, muscle contraction, platelet aggregation, inflammation, macrophage activation, differentiation and proliferation, neuropathic and inflammatory pain...
October 2017: Biomedical Journal
https://www.readbyqxmd.com/read/29179727/mild-endoplasmic-reticulum-stress-ameliorates-lipopolysaccharide-induced-neuroinflammation-and-cognitive-impairment-via-regulation-of-microglial-polarization
#19
Yi-Wei Wang, Qin Zhou, Xiang Zhang, Qing-Qing Qian, Jia-Wen Xu, Peng-Fei Ni, Yan-Ning Qian
BACKGROUND: Neuroinflammation, which ultimately leads to neuronal loss, is considered to play a crucial role in numerous neurodegenerative diseases. The neuroinflammatory process is characterized by the activation of glial cells such as microglia. Endoplasmic reticulum (ER) stress is commonly associated with impairments in neuronal function and cognition, but its relationship and role in neurodegeneration is still controversial. Recently, it was confirmed that nonharmful levels of ER stress protected against experimental Parkinson's disease...
November 28, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29174381/anti-neuroinflammatory-effect-of-6-8-1-tri-o-methylaverantin-a-metabolite-from-a-marine-derived-fungal-strain-aspergillus-sp-via-upregulation-of-heme-oxygenase-1-in-lipopolysaccharide-activated-microglia
#20
Kwan-Woo Kim, Hye Jin Kim, Jae Hak Sohn, Joung Han Yim, Youn-Chul Kim, Hyuncheol Oh
In the course of searching for anti-neuroinflammatory metabolites from marine-derived fungi, three fungal metabolites, 6,8,1'-tri-O-methylaverantin, 6,8-di-O-methylaverufin, and 5-methoxysterigmatocystin were isolated from a marine-derived fungal strain Aspergillus sp. SF-6796. Among these, 6,8,1'-tri-O-methylaverantin induced the expression of heme oxygenase (HO)-1 protein in BV2 microglial cells. The induction of HO-1 protein was mediated by the activation of nuclear transcription factor erythroid-2 related factor 2 (Nrf2), and was regulated by the p38 mitogen-activated protein kinase and phosphatidylinositol 3-kinase/protein kinase B signaling pathways...
November 21, 2017: Neurochemistry International
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