Autologous transplantation of bone marrow-derived endothelial progenitor cells attenuates monocrotaline-induced pulmonary arterial hypertension in rats

Critical Care Medicine
Hon-Kan YipMorgan Fu

Abstract

Bone marrow-derived endothelial progenitor cells have been shown to circulate to damaged vascular endothelium and differentiate into mature endothelial cells. This study investigated whether bone marrow-derived endothelial progenitor cell therapy ameliorates monocrotaline (MCT)-induced pulmonary arterial hypertension in a rat model. Male Sprague-Dawley rats were randomized to receive MCT (75 mg/kg) only (group 1), MCT plus autologous bone marrow-derived endothelial progenitor cell (1.2 x 10(6) cells) transplantation (group 2), and saline injection only (group 3). Mononuclear cells were obtained from femoral bone marrow of group 2 rats and isolated by Ficoll gradient centrifugation. The cells were cultured for 21 days in endothelial culture medium. An animal research laboratory at Kaohsiung Chang Gung Memorial Hospital. Hemodynamics, ventricular weight, expressions of connexin43, endothelial nitric oxide synthase messenger RNA gene, Bcl-2, and number of alveolar sacs and small lung arterioles were measured. Hemodynamic measurements on day 28 after MCT treatment revealed the development of significantly increased pulmonary arterial hypertension in MCT-treated groups (p < .0001). The bone marrow-derived endothelial progenitor cell...Continue Reading

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