Related Experiment Video
Updated: Apr 14, 2026
09:39
Techniques for the Analysis of Extracellular Vesicles Using Flow Cytometry
Published on: March 17, 2015
24.2K
Detecting Erythrocyte-Derived Extracellular Vesicles Generated from Blood Pump Flow and the Challenges Encountered
Kylie M Foster1, Ahmed M El Banayosy2, Aly El Banayosy3
1School of Sustainable Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA.
Cells
|April 13, 2026
Summary
Mechanical circulatory support devices can harm blood cells, increasing erythrocyte-derived extracellular vesicles (ErEVs). This study found bovine blood is more sensitive to pump-induced trauma than porcine blood, offering a better model for device testing.
Area of Science:
- Biomedical Engineering
- Hematology
- Materials Science
Background:
- Mechanical circulatory support (MCS) is vital for cardiac/pulmonary failure but causes adverse events due to blood trauma.
- Erythrocyte-derived extracellular vesicles (ErEVs) are elevated in patients with MCS devices and linked to adverse events.
- Current MCS device development often neglects ErEVs and uses animal blood (porcine, bovine) with inadequate characterization.
Purpose of the Study:
- To quantify ErEVs generated from porcine and bovine red blood cells (RBCs) during MCS pump perfusion.
- To identify reliable stains for porcine and bovine RBCs and ErEVs for flow cytometry analysis.
- To compare the sensitivity of porcine and bovine RBCs to mechanical trauma from a blood pump.
Main Methods:
- Flow cytometry was used to monitor ErEVs during a 6-hour perfusion of porcine or bovine RBCs with the CentriMag blood pump.
- Evaluated 12 different antibodies and dyes, including glycophorin A, to find suitable stains for porcine and bovine RBCs.
- Utilized CD46 for porcine RBCs and carboxyfluorescein succinimidyl ester (CFSE) for bovine RBCs, demonstrating their efficacy in ErEV detection.
Main Results:
- Statistically significant increases in both porcine and bovine ErEVs were observed with increased perfusion time.
- Bovine erythrocytes produced significantly more ErEVs than porcine erythrocytes.
- CD46 and CFSE were confirmed as reliable stains for porcine and bovine ErEV detection, respectively.
Conclusions:
- Bovine erythrocytes are more sensitive to mechanical trauma from blood pumps than porcine erythrocytes.
- Bovine blood may serve as a more effective model for early-stage MCS device development due to higher sensitivity.
- Validated CD46 and CFSE stains have implications for future in vitro pump testing and animal research.
