TY - JOUR
T1 - Overexpression of von Willebrand factor is an independent risk factor for pathogenesis of intimal hyperplasia
T2 - Preliminary studies
AU - Qin, Feng
AU - Impeduglia, Theresa
AU - Schaffer, Pamela
AU - Dardik, Herbert
N1 - Funding Information:
From Section of Vascular Surgery and the Heart and Vascular Institute of New Jersey, Englewood Hospital and Medical Center, Englewood, New Jersey. This work was supported in part by the Baker Foundation and the Joseph and Ida Liskin Foundation. Competition of interest: nil. Reprint requests: Herbert Dardik, MD, Englewood Hospital and Medical Center, 350 Engle St, Englewood, NJ 07631. Copyright © 2003 by The Society for Vascular Surgery and The American Association for Vascular Surgery. 0741-5214/2003/$30.00 + 0 doi:10.1067/mva.2003.63
PY - 2003/2/1
Y1 - 2003/2/1
N2 - Objective: Deposition of von Willebrand factor (vWF) is increased in hyperplastic intima of grafts, vWF levels are elevated in patients with cardiovascular diseases, and there is resistance to progression of atherosclerosis in pigs with von Willebrand disease. We hypothesize that increased expression of endothelial vWF has mitogenic effects on smooth muscle cell (SMC) proliferation. Methods: In an in vitro study, mouse aortic smooth muscle cells (SMC) were exposed to vWF in various concentrations (0, 5, 20, 100, 500, and 1000 ng/mL). DNA synthesis of SMC was measured with 3H-thymidine incorporation. In an in vivo study, 108 mice from inbred strains of C57BL/6J (control) and RIIIS/J (characteristic of low plasma vWF) underwent carotid artery ligation (flow cessation model) and were divided into three groups: C57BL/6J, RIIIS/J, and RIIIS/J treated with desmopressin (DDAVP; intraperitoneal injection at 3 μg/kg/d). At 2 and 4 weeks, carotid arteries were harvested for analysis with immunohistochemical analysis, morphometric studies, and reverse transcriptase polymerase chain reaction; plasma vWF was measured with an enzyme-linked immunosorbent assay. Results: In vitro SMC proliferation showed a positive dose-response curve with vWF stimulation. Intimal hyperplasia (IH) in carotid arteries was prominent in C57BL/6J mice, absent in RIIIS/J mice, and moderate in RIIIS/J treated with DDAVP (intima-media ratio, 71% ± 18%, 0, and 32% ± 12%, respectively; P < .01). vWF deposition occurred in all hyperplastic intima subjacent to intact endothelium. Plasma vWF correlated with degree of IH (110% ± 10%, 21% ± 7%, and 45% ± 8%, respectively; P < .05). vWF-messenger RNA was 9 times higher in carotid arteries of C57BL/6J mice and 4 times higher in RIIIS/J with DDAVP, compared with RIIIS/J. Conclusions: vWF directly stimulates SMC proliferation in vitro via a direct dose-response effect. In vivo low shear stress accelerates IH proportional to vWF expression. This could occur under intact endothelium without platelet activation and platelet-derived growth factor release. In effect, control of IH may entail modulation of vWF expression.
AB - Objective: Deposition of von Willebrand factor (vWF) is increased in hyperplastic intima of grafts, vWF levels are elevated in patients with cardiovascular diseases, and there is resistance to progression of atherosclerosis in pigs with von Willebrand disease. We hypothesize that increased expression of endothelial vWF has mitogenic effects on smooth muscle cell (SMC) proliferation. Methods: In an in vitro study, mouse aortic smooth muscle cells (SMC) were exposed to vWF in various concentrations (0, 5, 20, 100, 500, and 1000 ng/mL). DNA synthesis of SMC was measured with 3H-thymidine incorporation. In an in vivo study, 108 mice from inbred strains of C57BL/6J (control) and RIIIS/J (characteristic of low plasma vWF) underwent carotid artery ligation (flow cessation model) and were divided into three groups: C57BL/6J, RIIIS/J, and RIIIS/J treated with desmopressin (DDAVP; intraperitoneal injection at 3 μg/kg/d). At 2 and 4 weeks, carotid arteries were harvested for analysis with immunohistochemical analysis, morphometric studies, and reverse transcriptase polymerase chain reaction; plasma vWF was measured with an enzyme-linked immunosorbent assay. Results: In vitro SMC proliferation showed a positive dose-response curve with vWF stimulation. Intimal hyperplasia (IH) in carotid arteries was prominent in C57BL/6J mice, absent in RIIIS/J mice, and moderate in RIIIS/J treated with DDAVP (intima-media ratio, 71% ± 18%, 0, and 32% ± 12%, respectively; P < .01). vWF deposition occurred in all hyperplastic intima subjacent to intact endothelium. Plasma vWF correlated with degree of IH (110% ± 10%, 21% ± 7%, and 45% ± 8%, respectively; P < .05). vWF-messenger RNA was 9 times higher in carotid arteries of C57BL/6J mice and 4 times higher in RIIIS/J with DDAVP, compared with RIIIS/J. Conclusions: vWF directly stimulates SMC proliferation in vitro via a direct dose-response effect. In vivo low shear stress accelerates IH proportional to vWF expression. This could occur under intact endothelium without platelet activation and platelet-derived growth factor release. In effect, control of IH may entail modulation of vWF expression.
UR - https://www.scopus.com/pages/publications/0037323448
U2 - 10.1067/mva.2003.63
DO - 10.1067/mva.2003.63
M3 - Article
C2 - 12563218
AN - SCOPUS:0037323448
SN - 0741-5214
VL - 37
SP - 433
EP - 439
JO - Journal of Vascular Surgery
JF - Journal of Vascular Surgery
IS - 2
ER -