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Complements and Their Role in Systemic Disorders
Samuel Sherng Young Wang1, Haoming Tang2, Marcus Wing Choy Loe2
1Nephrology, Tan Tock Seng Hospital, Singapore, SGP.
Insights
The complement system, vital for innate immunity, can be dysregulated in various diseases. Understanding its role aids in diagnosing and managing complement-mediated disorders.
Area of Science:
- Immunology
- Pathophysiology
Background:
- The complement system is a crucial part of innate immunity, involving classical, alternative, and lectin pathways.
- Dysregulation of the complement system, due to congenital or acquired conditions, leads to specific deficiencies and contributes to various systemic diseases.
Purpose of the Study:
- To review the role of complement factors in systemic diseases.
- To guide clinicians in diagnosing and managing complement-mediated disorders.
Main Methods:
- Literature review of complement system mechanisms and pathophysiology.
- Analysis of complement's role in rheumatic, neurological, ophthalmological, renal, and hematological disorders.
Main Results:
- Complement system dysregulation is implicated in a range of systemic diseases.
- Understanding complement pathways is essential for clinical diagnosis and treatment.
Conclusions:
- Adequate knowledge of complement mechanisms and dysregulation is critical for effective clinical management.
- This review provides insights into diagnostic and therapeutic strategies for complement-mediated conditions.
Abstract:
The complement system is critical to the body's innate defense against exogenous pathogens and clearance of endogenous waste, comprising the classical, alternative, and lectin pathways. Although tightly regulated, various congenital and acquired diseases can perturb the complement system, resulting in specific complement deficiencies. Systemic rheumatic, neurological, ophthalmological, renal, and hematological disorders are some prototypical complement-mediated diseases. An adequate understanding of the mechanisms of the normal complement system and the pathophysiology of complement dysregulation is critical for providing diagnostic clues and appropriately managing these conditions. This review guides clinicians in understanding the role of complement factors in systemic diseases and what diagnostic and therapeutic options are available for complement-mediated disorders.
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