Molecular Mechanism of the Protective Effects of M2 Microglia on Neurons: A Review Focused on Exosomes and Secretory Proteins.
Level 5 - mechanism / opinion, no new human data
Narrative review summarizing mechanistic and preclinical studies without new human data.
PubMed 36222957 · doi:10.1007/s11064-022-03760-4
What was done
This narrative review summarizes existing literature on the molecular mechanisms underlying the neuroprotective actions of M2-polarized microglia, focusing on their secretory proteins and exosomes in central nervous system injuries and neurodegenerative disorders.
What was found
The abstract reports no numerical data or quantitative outcomes. It describes that M2 microglia mediate neuroprotection by suppressing inflammation, promoting degradation of misfolded proteins, stimulating neurite growth and neurogenesis, promoting myelination, preserving blood-brain barrier integrity, inhibiting apoptosis and autophagy, and enhancing phagocytosis.
Why it matters
Understanding the secretome and signaling pathways of protective microglia phenotypes helps identify molecular targets for therapeutic modulation in stroke, trauma, and neurodegeneration.
Limits
As a narrative review, it does not provide systematic search methods, study counts, or quantitative effect sizes. The findings rely primarily on preclinical and mechanistic models whose clinical translation remains unverified in the abstract.
Cited by
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