The dysfunction of complement and coagulation in diseases: the implications for the therapeutic interventions

Area of Science:

• Immunology
• Vascular Biology
• Critical Care Medicine

Background:

• The complement system and coagulation system are crucial for immune response and vascular homeostasis, respectively.
• Overactivation of these systems is implicated in the pathogenesis of various diseases, including sepsis.
• Sepsis involves complex interactions between the inflammatory network, coagulation, and complement systems, leading to increased infection susceptibility and disordered immune responses.

Purpose of the Study:

• To review the role of complement and coagulation system activation in critical illness, with a focus on sepsis.
• To highlight the molecular relationships and crosstalk between coagulation and complement pathways in sepsis progression.
• To identify potential intervention targets for sepsis treatment based on these interactions.

Main Methods:

• Review of recent findings on the molecular mechanisms linking coagulation and complement pathways in sepsis.
• Analysis of the pathogenic role of complement and coagulation system overactivation in critical illness.
• Exploration of knowledge gaps in sepsis pathophysiology related to these systems.

Main Results:

• The activation of complement and coagulation involves proteolytic cascades, with overactivation being a key pathogenic factor.
• Sepsis pathogenesis is characterized by intricate crosstalk between inflammatory, coagulation, and complement systems.
• Significant knowledge gaps exist in understanding the complexities of sepsis, necessitating further research.

Conclusions:

• The interplay between coagulation and complement systems is central to sepsis progression.
• Immunomodulatory therapies targeting this crosstalk may offer significant benefits for sepsis patients.
• Further investigation into these molecular relationships is crucial for developing more effective sepsis treatments.