Immunomodulation in the critically ill.

Area of Science:

• Critical care medicine
• Immunology
• Pharmacology

Background:

• Critically ill patients often exhibit dysregulated immune and inflammatory responses.
• Immunotherapy offers a potential 'magic bullet' to reduce mortality in conditions like sepsis.
• Past research explored steroids, antibodies, and receptor antagonists with limited success.

Purpose of the Study:

• To summarize the current knowledge on immunotherapy for critically ill patients.
• To review the efficacy of immune-modulating agents in sepsis and acute respiratory distress syndrome.
• To highlight the challenges and disappointments in this research area.

Main Methods:

• Literature review of immunotherapy approaches in critical care.
• Analysis of studies involving steroids, anti-endotoxin/cytokine antibodies, and receptor antagonists.
• Focus on research related to sepsis and acute respiratory distress syndrome.

Main Results:

• Despite theoretical appeal, immunotherapy for critical illness has shown limited success.
• Various immune-modulating strategies have been investigated over the past two decades.
• Research outcomes in sepsis and ARDS have been largely disappointing.

Conclusions:

• Immunotherapy for critically ill patients, including those with sepsis, remains a challenging field.
• The 'magic bullet' for altering immune responses and decreasing mortality has not yet been found.
• Further research is needed to overcome the limitations of current immune-modulating strategies.