Microglia And Astrocytes

Microglia and astrocytes play crucial roles in Alzheimer's Disease (AD) and dementia. Microglia, the brain's resident immune cells, become activated in response to beta-amyloid plaques, hallmark features of AD, attempting to clear them but often contributing to neuroinflammation and neuronal damage. Dysfunctional microglia exacerbate disease progression by failing to properly regulate inflammation or clear debris.

Astrocytes, another type of glial cell, provide essential support to neurons and help maintain the blood-brain barrier. In AD, astrocytes react to pathological changes by altering their functions, such as releasing inflammatory cytokines or changing their ability to buffer neurotransmitters and ions. These alterations disrupt brain homeostasis and contribute to cognitive decline.

Understanding the intricate roles of microglia and astrocytes in neurodegenerative diseases like AD is crucial for developing targeted therapies that mitigate neuroinflammation while preserving brain function and structure.