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ICAM-1 but not E-selectin is upregulated by ionizing radiation in human umbilical vein endothelial cells and human microvascular endothelial cells

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4 Author(s)
Prabhakarpandian, B. ; Sch. of Biomed. Eng., Tennessee Univ., Memphis, TN, USA ; Goetz, D.J. ; Swerlick, R.A. ; Kiani, M.F.

We have investigated the expression of E-selectin and ICAM-1 on human umbilical vein endothelial cells (HUVEC) and human microvascular endothelial cells (HMEC) at 5 hr, 24 hr, 48 hr and 72 hr post-irradiation. Cells were irradiated (IR) with a single dose of 10 Gy and expression of molecules quantified by flow cytometric analysis. Preliminary results indicate that ICAM-1 is upregulated at 48 hr. Post-IR in both cell types. We did not observe upregulation of E-selectin post-IR. Consistent with this latter finding, in vitro parallel plate flow chamber assays (shear stress of 0.5- 2.0 dynes/cm 2) revealed a lack of HL-60 rolling on HUVECs and HMECs monolayers 5 hr. post-IR. Thus, our finding suggest that, in response to radiation ICAM-1 is upregulated, but not E-selectin

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[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint  (Volume:1 )

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