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Complement System01:27

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Complement System in Alzheimer's Disease.

Akash Shah1, Uday Kishore2, Abhishek Shastri3

  • 1Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AD, UK.

International Journal of Molecular Sciences
|December 24, 2021
PubMed
Summary
This summary is machine-generated.

The complement system, part of the immune system, plays a dual role in the brain. While essential for CNS function, its overactivation contributes to neuroinflammation in Alzheimer's disease.

Keywords:
Alzheimer’s diseasecomplement systemmicroglianeuroinflammation

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Area of Science:

  • Neuroscience
  • Immunology
  • Molecular Biology

Background:

  • Alzheimer's disease is a progressive neurodegenerative disorder impacting memory and daily activities.
  • The complement system is a crucial innate immune component with over thirty proteins and three activation pathways.
  • This system is vital for central nervous system (CNS) functions like neurogenesis and synaptic plasticity.

Purpose of the Study:

  • To explore the dual role of the complement system in CNS function and neuroinflammation.
  • To investigate the complement system's contribution to neurodegenerative diseases, specifically Alzheimer's disease.
  • To identify potential therapeutic targets within the complement system to mitigate neuroinflammation.

Main Methods:

  • Literature review and synthesis of existing research on the complement system and Alzheimer's disease.
  • Analysis of the complement system's involvement in both normal CNS functioning and pathological processes.
  • Discussion of therapeutic strategies targeting complement-mediated neuroinflammation.

Main Results:

  • The complement system is integral to normal CNS processes, including synaptic pruning and neuronal plasticity.
  • Chronic activation of the complement system leads to neuroinflammation, a key factor in Alzheimer's disease pathogenesis.
  • Dysregulation of the complement cascade contributes significantly to the progression of neurodegenerative conditions.

Conclusions:

  • The complement system's intricate role in the CNS presents a complex challenge in treating Alzheimer's disease.
  • Targeting specific components of the complement pathway offers a promising therapeutic avenue to reduce neuroinflammation.
  • Further research is needed to fully elucidate and leverage the complement system for therapeutic benefit in neurodegeneration.