R. Hebbel

Publications307
h-index77
Citations19,795
Highly Influential Citations628
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Origins of circulating endothelial cells and endothelial outgrowth from blood.
Normal adults have a small number of circulating endothelial cells (CEC) in peripheral blood, and endothelial outgrowth has been observed from cultures of blood. In this study we seek insight into… Expand
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Heme triggers TLR4 signaling leading to endothelial cell activation and vaso-occlusion in murine sickle cell disease.
Treatment of sickle cell disease (SCD) is hampered by incomplete understanding of pathways linking hemolysis to vaso-occlusion. We investigated these pathways in transgenic sickle mice. Infusion of… Expand
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Morphine stimulates angiogenesis by activating proangiogenic and survival-promoting signaling and promotes breast tumor growth.
Morphine is used to treat pain in several medical conditions including cancer. Here we show that morphine, in a concentration typical of that observed in patients' blood, stimulates human… Expand
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Sickle blood contains tissue factor-positive microparticles derived from endothelial cells and monocytes.
Blood microparticles (MPs) in sickle cell disease (SCD) are reportedly derived only from erythrocytes and platelets. Yet in SCD, endothelial cells and monocytes are activated and abnormally express… Expand
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Accelerated autoxidation and heme loss due to instability of sickle hemoglobin.
The pleiotropic effect of the sickle gene suggests that factors in addition to polymerization of the mutant gene product might be involved in sickle disease pathobiology. We have examined rates of… Expand
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Circulating endothelial cells. Biomarker of vascular disease.
Recent research has recognised new populations of non-hematopoietic cells in the blood. One of these, circulating endothelial cells (CECs), often defined by the expression of membrane glycoprotein… Expand
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Spontaneous oxygen radical generation by sickle erythrocytes.
Since the various membrane abnormalities of sickle erythrocytes might result from excessive accumulation of oxidant damage, we have measured the generation of superoxide, peroxide, and hydroxyl… Expand
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Circulating activated endothelial cells in sickle cell anemia.
BACKGROUND The vascular wall participates in the pathogenesis of sickle cell disease. To determine whether the endothelium is activated in this disease, we studied the number, origin, and surface… Expand
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The relative magnitudes of endothelial force generation and matrix stiffness modulate capillary morphogenesis in vitro.
When suspended in collagen gels, endothelial cells elongate and form capillary-like networks containing lumens. Human blood outgrowth endothelial cells (HBOEC) suspended in relatively rigid 3 mg/ml… Expand
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Binding and displacement of vascular endothelial growth factor (VEGF) by thrombospondin: Effect on human microvascular endothelial cell proliferation and angiogenesis
Vascular endothelial growth factor (VEGF) is a specific angiogenic factor, and thrombospondin (TSP), is a potent inhibitor of angiogenesis. To better understand the role of TSP as an anti-angiogenic… Expand
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