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Updated: Feb 18, 2026
08:23
Characterization of Sickling During Controlled Automated Deoxygenation with Oxygen Gradient Ektacytometry
Published on: November 5, 2019
10.4K
Summary
Sickle cell anemia causes abnormal blood flow due to stiff red blood cells. Treatments must address the root causes to maintain healthy blood rheology.
Area of Science:
- Hematology
- Biophysics
Background:
- Sickle cell anemia is characterized by reduced red blood cell deformability.
- Low hematocrit in patients compensates for cell stiffness, maintaining normal whole blood viscosity.
- Microvascular flow is compromised by hemoglobin S gellation under hypoxic conditions.
Purpose of the Study:
- To elucidate the rheological abnormalities in sickle cell anemia.
- To highlight the risks associated with hemoglobin gellation and sickling.
- To emphasize the need for treatments that preserve normal blood rheology.
Main Methods:
- Rheological analysis of sickle cell blood.
- Assessment of factors influencing red blood cell deformability and viscosity.
- Investigation of hemoglobin gellation under varying oxygen tensions.
Main Results:
- Sickle cells exhibit significantly reduced deformability, impacting blood flow.
- High hemoglobin S concentration increases cellular viscosity and sickling risk.
- Hypoxemia triggers hemoglobin gellation, jeopardizing microvascular circulation.
Conclusions:
- Effective sickle cell anemia treatment requires targeting fundamental pathogenetic mechanisms.
- Preserving normal blood rheology is crucial for successful disease management.
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