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Published on: April 13, 2017
Role of Microglia in Herpesvirus-Related Neuroinflammation and Neurodegeneration
Magdalena Patrycy1, Marcin Chodkowski1, Malgorzata Krzyzowska1
1Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland.
Abstract:
Neuroinflammation is defined as an inflammatory state within the central nervous system (CNS). Microglia conprise the resident tissue macrophages of the neuronal tissue. Upon viral infection of the CNS, microglia become activated and start to produce inflammatory mediators important for clearance of the virus, but an excessive neuroinflammation can harm nearby neuronal cells. Herpesviruses express several molecular mechanisms, which can modulate apoptosis of infected neurons, astrocytes and microglia but also divert immune response initiated by the infected cells. In this review we also describe the link between virus-related neuroinflammation, and development of neurodegenerative diseases.
Insights
Neuroinflammation, an immune response in the central nervous system (CNS), involves microglia activation during viral infections. Excessive inflammation from herpesviruses can harm neurons and link to neurodegenerative diseases.
Area of Science:
- Neuroscience
- Immunology
- Virology
Background:
- Neuroinflammation is an inflammatory condition within the central nervous system (CNS).
- Microglia are the primary immune cells (macrophages) in the brain.
- Viral infections, particularly herpesviruses, can trigger and modulate neuroinflammation.
Purpose of the Study:
- To review the role of microglia in viral CNS infections.
- To explore herpesvirus mechanisms in modulating apoptosis and immune responses.
- To describe the connection between virus-induced neuroinflammation and neurodegenerative diseases.
Main Methods:
- Literature review of studies on neuroinflammation, viral infections, and neurodegeneration.
- Analysis of molecular mechanisms employed by herpesviruses.
- Synthesis of current research linking viral neuroinflammation to disease pathogenesis.
Main Results:
- Microglia activation is crucial for viral clearance but can cause neuronal damage if excessive.
- Herpesviruses utilize molecular strategies to evade immune responses and control apoptosis in neural cells.
- A significant association exists between herpesvirus-related neuroinflammation and the development of neurodegenerative conditions.
Conclusions:
- Neuroinflammation is a complex process with dual roles in viral infections.
- Herpesviruses actively manipulate host responses, contributing to disease progression.
- Understanding these mechanisms is vital for developing therapeutic strategies against neurodegenerative diseases.

