Journal
FRONTIERS IN IMMUNOLOGY
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2021.675660
Keywords
intracerebral hemorrhage; microglia; phenotype switch; neuroimmunology; neuroinflammation
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Funding
- National Natural Science Foundation of China [81771294]
- National undergraduate innovation training project [2020105330289]
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Research suggests that microglia may shift towards a pro-inflammatory phenotype following intracerebral hemorrhage, while anti-inflammatory microglia with neuroprotective effects are suppressed. Driving microglia towards an anti-inflammatory phenotype could potentially restrict inflammation and engulf cellular debris.
Microglia are the resident immune cells of the central nervous system (CNS). It is well established that microglia are activated and polarized to acquire different inflammatory phenotypes, either pro-inflammatory or anti-inflammatory phenotypes, which act as a critical component in the neuroinflammation following intracerebral hemorrhage (ICH). Microglia produce pro-inflammatory mediators at the early stages after ICH onset, anti-inflammatory microglia with neuroprotective effects appear to be suppressed. Previous research found that driving microglia towards an anti-inflammatory phenotype could restrict inflammation and engulf cellular debris. The principal objective of this review is to analyze the phenotypes and dynamic profiles of microglia as well as their shift in functional response following ICH. The results may further the understanding of the body's self-regulatory functions involving microglia following ICH. On this basis, suggestions for future clinical development and research are provided.
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