Induced cell trauma during in vitro perfusion: a comparison between two different perfusion systems

Area of Science:

• Biomedical Engineering
• Cardiovascular Research
• Hematology

Background:

• Extracorporeal membrane oxygenation (ECMO) involves prolonged blood contact with artificial surfaces.
• Blood-cell activation and damage are critical concerns during ECMO, impacting patient outcomes.
• Different ECMO system components may influence blood compatibility.

Purpose of the Study:

• To compare blood cell activation and hemolysis between two distinct in vitro ECMO perfusion systems.
• To evaluate the biocompatibility of an assistance respiratoire extra corporelle (AREC) system versus a centrifugal pump system.

Main Methods:

• In vitro long-term perfusion of two ECMO systems: AREC (silicon tubing, hollow-fiber oxygenator) and centrifugal pump (PVC tubing, membrane oxygenator).
• Assessment of platelet activation via membrane glycoprotein expression (GPIb, GPIIb/IIIa) and plasma beta-thromboglobulin (beta-TG).
• Evaluation of neutrophil activation via CD11b expression and measurement of plasma cytokines (IL-1beta, IL-6, IL-8) and plasma hemoglobin for hemolysis.

Main Results:

• The AREC system demonstrated significantly lower platelet activation (GPIb, GPIIb/IIIa expression).
• Neutrophil activation (CD11b expression) was significantly lower in the AREC system.
• The AREC system exhibited significantly reduced hemolysis (plasma hemoglobin).
• No significant differences in IL-1beta, IL-6, or IL-8 concentrations were observed between systems.

Conclusions:

• The AREC system shows superior biocompatibility compared to the centrifugal pump system in vitro.
• Reduced platelet and neutrophil activation, along with lower hemolysis, suggest the AREC system may offer improved hemocompatocompatibility during ECMO.
• Further research is needed to identify specific components responsible for these differences.