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Updated: Apr 25, 2026
Measuring Deformability and Red Cell Heterogeneity in Blood by Ektacytometry
Published on: January 12, 2018
The effects of propofol and memantine on erythrocyte deformability
Objective:
Propofol is an intravenous general anesthetic with a primary hypnotic effect. Memantine is an NMDA receptor antagonist that has been shown to reverse changes in memory and synaptic plasticity in animal models. This study aims to investigates whether propofol and/or memantine has any effects on erythrocyte deformability.
Methods:
24 Wistar albino rats were divided randomly into four groups. Group P received 150 mg.kg-1 propofol intraperitoneally (ip); Group M received 1 mg.kg-1 memantine (ip); Group PM received 1 mg.kg-1 memantine mg.kg-1 ip 30 minutes before the administration of 150 mg.kg-1 propofol; and the control group (Group C) received saline ip. Euthanasia was performed in all rats by using intraabdominal blood uptake. The heparinized whole blood samples were used to prepare erythrocyte suspensions, from which erythrocyte suspensions were formed with a PBS buffer solution containing 5% htc, and the deformability parameters were measured.
Results:
Erythrocyte deformability was significantly higher in Groups P, M and PM when compared to the Group C (p = 0.007 and p = 0.001, p <0.0001, respectively); while the erythrocyte deformability indices were similar in groups P, M and PM.
Conclusion:
The administration of propofol and memantine altered the erythrocyte deformability in the rats, which may lead to further problems in microcirculation. The administration of memantine to the propofol-treated rats did not alter the erythrocyte deformability; however the early results should be verified through further experimental and clinical studies (Fig. 1, Ref. 23).
Insights
Propofol and memantine significantly increased erythrocyte deformability in rats. Combining memantine with propofol did not further alter this effect, suggesting potential microcirculation implications.
Area of Science:
- Pharmacology
- Physiology
- Hematology
Background:
- Propofol is a common intravenous anesthetic agent.
- Memantine is an NMDA receptor antagonist with known effects on synaptic plasticity.
- Erythrocyte deformability is crucial for microcirculation.
Purpose of the Study:
- To investigate the effects of propofol and memantine on erythrocyte deformability.
- To determine if memantine modifies propofol's impact on red blood cells.
Main Methods:
- Wistar albino rats were randomly assigned to four groups: propofol, memantine, combined propofol and memantine, and control.
- Drugs were administered intraperitoneally.
- Erythrocyte deformability was measured using prepared blood suspensions.
Main Results:
- Both propofol and memantine significantly increased erythrocyte deformability compared to the control group.
- The combination of memantine and propofol resulted in similar erythrocyte deformability indices as individual treatments.
Conclusions:
- Propofol and memantine administration alters erythrocyte deformability in rats.
- This alteration may have implications for microcirculation.
- Further studies are needed to validate these findings in clinical settings.
