Inducing Experimental Polymicrobial Sepsis by Cecal Ligation and Puncture

Area of Science:

• Preclinical sepsis research
• Immunology
• Surgical models

Background:

• Sepsis models include toxin administration, bacterial challenge, and barrier disruption.
• The cecal ligation and puncture (CLP) model simulates human sepsis with tissue necrosis and polymicrobial infection.
• CLP induces immune responses, including cell reduction and immunoparalysis, mirroring human sepsis.

Purpose of the Study:

• To detail the cecal ligation and puncture (CLP) surgical technique in mice.
• To outline methods for evaluating sepsis-induced immune system changes.
• To provide antibody panels for flow cytometry in septic mice.

Main Methods:

• Performing cecal ligation and puncture (CLP) as a survival surgical procedure.
• Analyzing physiological and biochemical responses post-CLP.
• Utilizing multiparameter flow cytometry with specific monoclonal antibody panels.

Main Results:

• The CLP model replicates key aspects of human sepsis, including hemodynamic and immune responses.
• Sepsis induction via CLP leads to transient immune cell reduction and prolonged immunoparalysis.
• This model facilitates understanding of immune system dynamics during sepsis.

Conclusions:

• The cecal ligation and puncture (CLP) model is a valuable tool for preclinical sepsis studies.
• Understanding immune system changes in CLP is crucial for sepsis research.
• Flow cytometry offers detailed analysis of immune responses in the septic host.