Extracorporeal adsorbent-based strategies in sepsis

Area of Science:

• Critical Care Medicine
• Nephrology
• Immunology

Background:

• Gram-negative bacterial sepsis and septic shock present significant clinical challenges with high mortality.
• Current immunotherapies have largely failed, prompting interest in alternative treatments.
• Bacterial products and host inflammatory mediators drive sepsis pathogenesis.

Purpose of the Study:

• To review the potential of extracorporeal blood purification techniques, specifically adsorbent-based therapies, as adjunctive treatments for sepsis.
• To highlight the mechanisms by which adsorbents can remove sepsis-related toxins and mediators.
• To underscore the need for further clinical validation of these emerging therapies.

Main Methods:

• Review of extracorporeal therapies including plasma exchange, continuous renal replacement, and hemoperfusion with adsorbents.
• Discussion of different adsorbent types: nonselective, selective, and specific.
• Examination of the role of bacterial toxins and inflammatory mediators in sepsis.

Main Results:

• Extracorporeal therapies can reduce circulating bacterial products and inflammatory mediators in sepsis.
• Adsorbents, when incorporated into hemoperfusion, can remove toxic compounds from the blood.
• Adsorbents offer various binding mechanisms, from nonselective to specific toxin capture.

Conclusions:

• Adsorbent-based hemoperfusion represents a promising adjunctive therapy for sepsis.
• Despite experimental success, a lack of randomized clinical trials necessitates further investigation.
• A multidisciplinary approach is essential for effectively managing sepsis.