BACKGROUND: Endothelial dysfunction is an early manifestation of atherosclerotic disease. Circulating cells that express CD34, including endothelial and hematopoietic progenitor cells, might play a part in the development and progression of atherosclerosis. The aim of this study was to evaluate the association between coronary endothelial dysfunction and concentrations of circulating CD34+ cell subsets. METHODS: Intracoronary acetylcholine challenge was used to test for coronary endothelial dysfunction in 57 consecutive patients scheduled to undergo diagnostic coronary angiography and with no signs of substantial obstructive lesions. Mononuclear cells were extracted from whole blood samples taken from all patients, analyzed by flow cytometry for CD14, CD34, CD133, CD45, and vascular endothelial growth factor receptor 2 (VEGFR2), and cultured for functional analysis. RESULTS: Compared with patients with normal coronary endothelial function, in those with coronary endothelial dysfunction, the number of circulating CD34+/CD45(dim)/VEGFR2- cells, CD34+/CD45(dim)/CD133+/VEGFR2- cells and colony-forming units were reduced. Concentrations of CD34+/CD45-/VEGFR2+ cells did not differ between groups. CONCLUSIONS: Regulation of CD34+ cell subsets seems to differ between patients with coronary endothelial dysfunction and those with normal coronary endothelial function. Changes in specific circulating progenitor cell subsets might, therefore, be an early manifestation of atherosclerosis.
BACKGROUND: Endothelial dysfunction is an early manifestation of atherosclerotic disease. Circulating cells that express CD34, including endothelial and hematopoietic progenitor cells, might play a part in the development and progression of atherosclerosis. The aim of this study was to evaluate the association between coronary endothelial dysfunction and concentrations of circulating CD34+ cell subsets. METHODS: Intracoronary acetylcholine challenge was used to test for coronary endothelial dysfunction in 57 consecutive patients scheduled to undergo diagnostic coronary angiography and with no signs of substantial obstructive lesions. Mononuclear cells were extracted from whole blood samples taken from all patients, analyzed by flow cytometry for CD14, CD34, CD133, CD45, and vascular endothelial growth factor receptor 2 (VEGFR2), and cultured for functional analysis. RESULTS: Compared with patients with normal coronary endothelial function, in those with coronary endothelial dysfunction, the number of circulating CD34+/CD45(dim)/VEGFR2- cells, CD34+/CD45(dim)/CD133+/VEGFR2- cells and colony-forming units were reduced. Concentrations of CD34+/CD45-/VEGFR2+ cells did not differ between groups. CONCLUSIONS: Regulation of CD34+ cell subsets seems to differ between patients with coronary endothelial dysfunction and those with normal coronary endothelial function. Changes in specific circulating progenitor cell subsets might, therefore, be an early manifestation of atherosclerosis.
Authors: M Peichev; A J Naiyer; D Pereira; Z Zhu; W J Lane; M Williams; M C Oz; D J Hicklin; L Witte; M A Moore; S Rafii Journal: Blood Date: 2000-02-01 Impact factor: 22.113
Authors: E Gunsilius; H C Duba; A L Petzer; C M Kähler; K Grünewald; G Stockhammer; C Gabl; S Dirnhofer; J Clausen; G Gastl Journal: Lancet Date: 2000-05-13 Impact factor: 79.321
Authors: Frank Timmermans; Filip Van Hauwermeiren; Magda De Smedt; Robrecht Raedt; Frank Plasschaert; Marc L De Buyzere; Thierry C Gillebert; Jean Plum; Bart Vandekerckhove Journal: Arterioscler Thromb Vasc Biol Date: 2007-05-10 Impact factor: 8.311
Authors: Elias T Zambidis; Lidia Sinka; Manuela Tavian; Venta Jokubaitis; Tea Soon Park; Paul Simmons; Bruno Péault Journal: Ann N Y Acad Sci Date: 2007-03-14 Impact factor: 5.691
Authors: Nikos Werner; Sven Wassmann; Patrick Ahlers; Tobias Schiegl; Sonja Kosiol; Andreas Link; Katrin Walenta; Georg Nickenig Journal: Basic Res Cardiol Date: 2007-11 Impact factor: 17.165
Authors: Alfonso Eirin; Monika L Gloviczki; Hui Tang; Mario Gössl; Kyra L Jordan; John R Woollard; Amir Lerman; Joseph P Grande; Stephen C Textor; Lilach O Lerman Journal: Eur Heart J Date: 2012-07-06 Impact factor: 29.983
Authors: Barry A Boilson; Katarina Larsen; Adriana Harbuzariu; Sinny Delacroix; Josef Korinek; Harald Froehlich; Kent R Bailey; Christopher G Scott; Brian P Shapiro; Guido Boerrigter; Horng H Chen; Margaret M Redfield; John C Burnett; Robert D Simari Journal: Circ Heart Fail Date: 2010-06-23 Impact factor: 8.790