Journal
JOURNAL OF APPLIED TOXICOLOGY
Volume 37, Issue 6, Pages 644-667Publisher
WILEY
DOI: 10.1002/jat.3451
Keywords
particulate matter; neurotoxicity; oxidative stress; neuroinflammation; neurodevelopmental disorder
Categories
Funding
- National Important Project on Scientific Research of China [2011CB933404]
- National Natural Science Foundation of China [81172697, 81302461, 81473003, 81502783, 81573186, 31671034, 81673218]
- Fundamental Research Funds for the Central Universities & Research and innovation program for graduate students in Universities of Jiangsu Province [SJZZ16_0033]
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Particulate matter (PM) combined with meteorological factors cause the haze, which brings inconvenience to people's daily life and deeply endanger people's health. Accumulating literature, to date, reported that PM are closely related to cardiopulmonary disease. Outpatient visits and admissions as a result of asthma and heart attacks gradually increase with an elevated concentration of PM. Owing to its special physicochemical property, the brain could be a potential target beyond the cardiopulmonary system. Possible routes of PM to the brain via a direct route or stimulation of pro-inflammatory cytokines have been reported in several documents concerning toxicity of engineered nanoparticles in rodents. Recent studies have demonstrated that PM have implications in oxidative stress, inflammation, dysfunction of cellular organelles, as well as the disturbance of protein homeostasis, promoting neuron loss and exaggerating the burden of central nervous system (CNS). Moreover, the smallest particles (nano-sized particles), which were involved in inflammation, reactive oxygen species (ROS), microglial activation and neuron loss, may accelerate the process of the neurodevelopmental disorder and neurodegenerative disease. Potential or other undiscovered mechanisms are not mutually exclusive but complementary aspects of each other. Epidemiology studies have shown that exposure to PM could bring about neurotoxicity and play a significant role in the etiology of CNS disease, which has been gradually corroborated by in vivo and in vitro studies. This review highlights research advances on the health effects of PM with an emphasis on neurotoxicity. With the hope of enhancing awareness in the public and calling for prevention and protective measures, it is a critical topic that requires proceeding exploration. Copyright (c) 2017 John Wiley & Sons, Ltd. Particulate matter (PM) combined with meteorological factors cause the haze, which deeply endanger people's health. Due to its special physicochemical property, the brain could be a potential target beyond the pulmonary system. It has been reported that PM, in particular the smallest particles (nano-sized particles), was involved in neural developmental disorder and neurodegenerative disease. Chronic vicious circulation called reactive microgliosis and astrogliosis may be the potential mechanism. This review highlighted research advances on the health effect of PM with emphasis on neurotoxicity.
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