The lectin pathway of complement and rheumatic heart disease
Marcia Holsbach Beltrame1, Sandra Jeremias Catarino1, Isabela Goeldner1
1Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná , Curitiba , Brazil.
Frontiers in Pediatrics
|February 6, 2015
Summary
The lectin pathway of the complement system, initiated by MBL and ficolins, plays a key role in innate immunity against pathogens like Streptococcus. Its components are crucial for understanding Rheumatic Fever predisposition and progression.
Area of Science:
- Immunology
- Molecular Biology
- Microbiology
Background:
- The innate immune system provides rapid host defense against pathogens.
- Complement system activation is crucial for immediate antimicrobial responses.
- The lectin pathway is a key initiator of complement activation.
Purpose of the Study:
- To review the structure, function, and genetic polymorphism of lectin pathway components.
- To discuss the role of the lectin pathway in Rheumatic Fever.
Main Methods:
- Review of existing literature on lectin pathway components.
- Analysis of the role of lectin pathway in host defense mechanisms.
- Exploration of genetic polymorphism and its impact on lectin pathway function.
Main Results:
- Lectin pathway activation involves MBL, CL-K1, and ficolins binding to microbial surfaces.
- MASP proteases cleave C4 and C2, forming the C3 convertase and initiating the cascade.
- Complement activation leads to pathogen opsonization, phagocytosis, lysis, and inflammatory responses.
Conclusions:
- The lectin pathway is integral to innate immunity and host defense.
- Understanding lectin pathway components and their variations is vital for studying diseases like Rheumatic Fever.
- Further research into the lectin pathway's role in disease pathogenesis is warranted.
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