Immunology and protein biochemistry, focusing on the complement system.
Background:
Recent research has significantly advanced the understanding of the complement system's activation, control, and component roles.
Immune complex deposition is a key factor in tissue injury within autoimmune connective tissue diseases.
Complement-mediated serum ability to solubilize immune complexes is a crucial protective mechanism against these diseases.
Purpose of the Study:
To elucidate the role of the complement system in the pathogenesis of autoimmune connective tissue diseases.
To define the mechanisms underlying reduced immune complex solubilization in these conditions.
Main Methods:
Review and synthesis of research over the past decade on complement system function.
Analysis of factors contributing to impaired immune complex solubilization.
Main Results:
The complement system plays a critical role in modulating immune complex formation and solubility.
Reduced immune complex solubilization in connective tissue diseases can result from inherited deficiencies, non-functional variants, decreased synthesis, hypercatabolism, or serum inhibitors of complement components.
Conclusions:
Complement-mediated immune complex solubilization is vital for preventing tissue injury in autoimmune diseases.
Further research is needed to fully define the complement system's and immune complexes' roles in the fundamental pathogenesis of connective tissue diseases.