Targeting Microglial Activation to Modulate Neuroinflammation in Alzheimer's Disease.

Area of Science:

• Neuroscience
• Immunology
• Pathology

Background:

• Alzheimer's disease (AD) involves amyloid plaques and neurofibrillary tangles, causing cognitive decline.
• Neuroinflammation, driven by microglia activation, is central to AD pathology.
• Microglia phenotypes are dynamic, influencing neuroprotection or neurodegeneration.

Purpose of the Study:

• To review microglial phenotypic transitions in Alzheimer's disease.
• To summarize signaling mechanisms regulating microglial activation.
• To explore therapeutic potential of modulating neuroinflammation in AD.

Main Methods:

• Review of current scientific literature on microglia and Alzheimer's disease.
• Analysis of molecular pathways (JAK-STAT, PI3K-AKT, MAPK) involved in microglial activation.
• Examination of therapeutic targets like TREM2 and P2X7 receptors.

Main Results:

• Microglia initially exhibit anti-inflammatory roles, aiding plaque clearance.
• Chronic or dysregulated microglial activation promotes a pro-inflammatory state, increasing neuronal damage.
• Key signaling pathways regulate these phenotypic shifts.

Conclusions:

• Modulating microglial activation presents a promising therapeutic avenue for AD.
• Strategies include enhancing neuroprotection, suppressing inflammation, and targeting specific receptors.
• Further understanding of glial interactions and activation drivers is crucial for novel AD treatments.