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Circulating blood cells modulate the atherosclerotic process in apolipoprotein E-deficient mice
Mònica Tous1, Natàlia Ferré, Elisabet Vilella
1Centre de Recerca Biomèdica, Institut de Recerca en Ciències de la Salut, Hospital Universitari de Sant Joan de Reus, Reus, Spain.
Metabolism: Clinical and Experimental
|December 19, 2003
Summary
Anemia reduced atherosclerosis development in mice, while increased hematocrit (blood
Area of Science:
- Cardiovascular Science
- Hematology
- Atherosclerosis Research
Background:
- Blood flow dynamics and hematologic factors influence arterial health.
- Apolipoprotein E-deficient mice are a model for studying atherosclerosis.
- The role of hematocrit and blood viscosity in atherogenesis requires further investigation.
Purpose of the Study:
- To investigate the impact of anemia and elevated hematocrit on atherosclerosis.
- To explore relationships between hematologic and hemorrheologic variables in mice.
- To elucidate the role of hemorrheology in the development of atherosclerotic lesions.
Main Methods:
- Forty-two apolipoprotein E-deficient mice were divided into control, anemia (phlebotomy), and high hematocrit (erythropoietin) groups.
- Atherosclerosis development and related variables were compared across groups.
- Hematocrit and blood viscosity were measured in additional mice to assess their correlation.
Main Results:
- Anemia significantly attenuated atherosclerosis, independent of lipid, iron, or oxidation changes.
- Erythropoietin administration enhanced atherosclerosis development.
- A direct correlation was observed between hematocrit, blood viscosity, and atherosclerotic lesion size.
Conclusions:
- Hematocrit and blood viscosity play a significant role in atherogenesis.
- Modulating hematocrit levels may represent a therapeutic target for atherosclerosis.
- Hemorheology is a critical factor in this animal model of atherosclerosis.