The estrogen-brain interface in neuroinflammation: a multidimensional mechanistic insight

Area of Science:

• Neuroscience
• Immunology
• Endocrinology

Background:

• Neuroinflammation has a dual role in the central nervous system, causing acute protection and chronic damage in neurodegenerative diseases.
• Estrogen, known for reproductive functions, also has significant neuroprotective effects.
• Understanding estrogen's impact on neuroinflammation is crucial for neurodegenerative disease research.

Purpose of the Study:

• To review the multifaceted actions of estrogen in modulating neuroinflammation.
• To explore estrogen's effects on astrocytes, microglia, and neurons.
• To highlight estrogen's potential in developing precision therapeutic strategies for neurodegenerative conditions.

Main Methods:

• Review of scientific literature on estrogen's role in neuroinflammation.
• Analysis of estrogen's interaction with key signaling pathways (PI3K/Akt, NF-κB, WNT/β-catenin).
• Examination of estrogen's influence on mitochondrial function, DNA repair, and gut microbiota.

Main Results:

• Estrogen receptors in astrocytes, microglia, and neurons mediate neuroprotection.
• Estrogen regulates critical signaling pathways involved in neuroinflammation.
• Estrogen enhances cellular repair mechanisms and influences systemic inflammation via gut microbiota.

Conclusions:

• Estrogen is a potent modulator of neuroinflammation with significant neuroprotective capabilities.
• Estrogen's actions extend beyond reproductive roles, impacting central nervous system health.
• Hormonal context, including sex-specific responses, is vital for understanding estrogen's therapeutic potential.