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Updated: Aug 8, 2026

Depletion of Specific Cell Populations by Complement Depletion
Published on: February 5, 2010
The complement system: pathophysiology and clinical relevance
Insights
The complement system is crucial for innate immunity, protecting against viral pathogens. Dysregulation of this system contributes to various diseases, impacting dermatology, nephrology, neurology, and xenotransplantation.
Area of Science:
- Immunology
- Infectious Disease
Background:
- The complement system is a vital component of innate immunity.
- It plays a key role in host defense against pathogens, including viruses.
- Its dysregulation is implicated in numerous pathological conditions.
Purpose of the Study:
- To review key aspects of the complement system.
- To explore its role in host-pathogen interactions, specifically with viral pathogens.
- To summarize its contribution to diseases in dermatology, nephrology, neurology, and xenotransplantation.
Main Methods:
- Literature review of complement system components, receptors, and regulatory mechanisms.
- Analysis of the complement system's role in viral infections.
- Summary of complement system involvement in specific organ pathologies.
Main Results:
- Detailed description of complement system components and function.
- Elucidation of the complement system's dual role in host defense and pathogen evasion.
- Evidence linking complement system dysfunction to diseases like dermatitis, nephritis, neurodegenerative disorders, and transplant rejection.
Conclusions:
- The complement system is a critical determinant of innate immunity.
- Understanding complement pathways is essential for managing viral infections and related diseases.
- Targeting complement dysregulation offers therapeutic potential in various medical fields.
Abstract:
In the present article we review selected aspects of the complement system as a major determinant of innate immunity. Besides a detailed description of the components of the complement system, its mode of action, cellular receptors and regulatory control mechanisms, we have focused on the role of the complement system in mutual defence strategies of invading viral pathogens and the host. Since a detrimental activation of the complement cascade is a critical element of several pathological conditions in diverse organs, we summarise the role of a deteriorated complement system in dermatology, nephrology, neurology and xenotransplantation.
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