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Features of Microglia and Neuroinflammation Relevant to Environmental Exposure and Neurotoxicity

Journal Article · · International Journal of Environmental Research and Public Health
 [1];  [2]
  1. Oak Ridge Institute for Science and Education (ORISE), at the US Environmental Protection Agency (EPA), Arlington, VA (United States); DOE/OSTI
  2. National Institutes of Health, Research Triangle Park, NC (United States)
Microglia are resident cells of the brain involved in regulatory processes critical for development, maintenance of the neural environment, injury and repair. They belong to the monocytic-macrophage lineage and serve as brain immune cells to orchestrate innate immune responses; however, they are distinct from other tissue macrophages due to their relatively quiescent phenotype and tight regulation by the CNS microenvironment. Microglia actively survey the surrounding parenchyma and respond rapidly to changes such that any disruption to neural architecture or function can contribute to the loss in regulation of the microglia phenotype. In many models of neurodegeneration and neurotoxicity, early events of synaptic degeneration and neuronal loss are accompanied by an inflammatory response including activation of microglia, perivascular monocytes, and recruitment of leukocytes. In culture, microglia have been shown to be capable of releasing several potentially cytotoxic substances, such as reactive oxygen intermediates, nitric oxide, proteases, arachidonic acid derivatives, excitatory amino acids, and cytokines; however, they also produce various neurotrophic factors and quench damage from free radicals and excitotoxins. As the primary source for pro-inflammatory cytokines, microglia are implicated as pivotal mediators of neuroinflammation and can induce or modulate a broad spectrum of cellular responses. Neuroinflammation should be considered as a balanced network of processes whereby subtle modifications can shift the cells toward disparate outcomes. For any evaluation of neuroinflammation and microglial responses, within the framework of neurotoxicity or degeneration, one key question in determining the consequence of neuroinflammation is whether the response is an initiating event or the consequence of tissue damage. As examples of environmental exposure-related neuroinflammation in the literature, we provide an evaluation of data on manganese and diesel exhaust particles.
Research Organization:
Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN (United States)
Sponsoring Organization:
National Institutes of Health (NIH); US Environmental Protection Agency (EPA); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0014664
OSTI ID:
1628353
Journal Information:
International Journal of Environmental Research and Public Health, Journal Name: International Journal of Environmental Research and Public Health Journal Issue: 7 Vol. 8; ISSN IJERGQ; ISSN 1660-4601
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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Non-toxic engineered carbon nanodiamond concentrations induce oxidative/nitrosative stress, imbalance of energy metabolism, and mitochondrial dysfunction in microglial and alveolar basal epithelial cells text January 2019
In vivo Two-Photon Imaging of Anesthesia-Specific Alterations in Microglial Surveillance and Photodamage-Directed Motility in Mouse Cortex journal May 2019
Neuroprotective and Anti-Inflammatory Activities of Allyl Isothiocyanate through Attenuation of JNK/NF-κB/TNF-α Signaling journal July 2017
Quantitative Analysis of Psoralea corylifolia Linne and its Neuroprotective and Anti-Neuroinflammatory Effects in HT22 Hippocampal Cells and BV-2 Microglia journal August 2016
Multi-Target Anti-Alzheimer Activities of Four Prenylated Compounds from Psoralea Fructus journal March 2018
Transduced Tat-aldose Reductase Protects Hippocampal Neuronal Cells against Oxidative Stress-induced Damage journal October 2019
Dexmedetomidine inhibits the lipopolysaccharide‐stimulated inflammatory response in microglia through the pathway involving TLR4 and NF‐κB journal August 2019
An adverse outcome pathway for parkinsonian motor deficits associated with mitochondrial complex I inhibition journal December 2017
Role of microglial activation and neuroinflammation in neurotoxicity of acrylamide in vivo and in vitro journal May 2019
Spinal cord injury: pathophysiology, treatment strategies, associated challenges, and future implications journal May 2019
Fluoride Induces Neuroinflammation and Alters Wnt Signaling Pathway in BV2 Microglial Cells journal April 2017
Zinc Oxide Nanoparticle Induces Microglial Death by NADPH-Oxidase-Independent Reactive Oxygen Species as well as Energy Depletion journal October 2016
Non-toxic engineered carbon nanodiamond concentrations induce oxidative/nitrosative stress, imbalance of energy metabolism, and mitochondrial dysfunction in microglial and alveolar basal epithelial cells journal February 2018
Cystatin F involvement in adenosine A2A receptor-mediated neuroinflammation in BV2 microglial cells journal May 2018
Inflammation in neurodegenerative diseases - an update journal April 2014
Folic acid deficiency enhanced microglial immune response via the Notch1/nuclear factor kappa B p65 pathway in hippocampus following rat brain I/R injury and BV2 cells journal May 2019
Aqueous Extract of Dendropanax morbiferus Leaves Effectively Alleviated Neuroinflammation and Behavioral Impediments in MPTP-Induced Parkinson’s Mouse Model journal January 2018
Sulforaphane-Enriched Broccoli Sprouts Pretreated by Pulsed Electric Fields Reduces Neuroinflammation and Ameliorates Scopolamine-Induced Amnesia in Mouse Brain through Its Antioxidant Ability via Nrf2-HO-1 Activation journal March 2019
The Ameliorative Effects of the Ethyl Acetate Extract of Salicornia europaea L. and Its Bioactive Candidate, Irilin B, on LPS-Induced Microglial Inflammation and MPTP-Intoxicated PD-Like Mouse Model journal July 2019
Danger in the Air: Air Pollution and Cognitive Dysfunction journal June 2018
Neurobiology of Chronic Stress-Related Psychiatric Disorders: Evidence from Molecular Imaging Studies journal February 2017
Microglia amplify inflammatory activation of astrocytes in manganese neurotoxicity journal May 2017
Inflammatory and cytotoxic effects of bifenthrin in primary microglia and organotypic hippocampal slice cultures journal May 2018
α1-antitrypsin mitigates NLRP3-inflammasome activation in amyloid β1–42-stimulated murine astrocytes journal September 2018
Coordinated Gene Expression of Neuroinflammatory and Cell Signaling Markers in Dorsolateral Prefrontal Cortex during Human Brain Development and Aging journal October 2014
Erythropoietin attenuates motor neuron programmed cell death in a burn animal model journal January 2018
Dexmedetomidine reduces lipopolysaccharide induced neuroinflammation, sickness behavior, and anhedonia journal January 2018
Oxidative Stress and Microglial Cells in Parkinson's Disease text January 2012
Carnosine prevents Aβ-induced oxidative stress and inflammation in microglial cells: a key role of TGF-β1 text January 2019
Carnosine prevents Aβ-induced oxidative stress and inflammation in microglial cells: a key role of TGF-β1 text January 2019
Non-toxic engineered carbon nanodiamond concentrations induce oxidative/nitrosative stress, imbalance of energy metabolism, and mitochondrial dysfunction in microglial and alveolar basal epithelial cells text January 2019
Investigation into experimental toxicological properties of plant protection products having a potential link to Parkinson's disease and childhood leukaemia† journal March 2017
Microglia, neuroinflammation, and beta-amyloid protein in Alzheimer's disease journal September 2013
Effects of simvastatin on the expression of inducible nitric oxide synthase and brain-derived neurotrophic factor in a lipopolysaccharide-induced rat model of Parkinson disease journal May 2015

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