tailieunhanh - Báo cáo y học: "Granulocyte-CSF induced inflammation-associated cardiac thrombosis in iron loading mouse heart and can be attenuated by statin therapy"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Granulocyte-CSF induced inflammation-associated cardiac thrombosis in iron loading mouse heart and can be attenuated by statin therapy | Lian et al. Journal of Biomedical Science 2011 18 26 http content 18 1 26 The cost of publication in Journal of Biomedical Science Is borne by the National Science Council Taiwan JOURNAL OF BIOMEDICAL SCIENCE RESEARCH Open Access Granulocyte-CSF induced inflammation-associated cardiac thrombosis in iron loading mouse heart and can be attenuated by statin therapy Wei S Lian2 3t Heng Lin4t Winston TK Cheng5 Tateki Kikuchi2 and Ching F Cheng1 2 Abstract Background Granulocyte colony-stimulating factor G-CSF a hematopoietic cytokine was recently used to treat patients of acute myocardial infarction with beneficial effect. However controversy exists as some patients developed re-stenosis and worsened condition post G-CSF delivery. This study presents a new disease model to study G-CSF induced cardiac thrombosis and delineate its possible mechanism. We used iron loading to mimic condition of chronic cardiac dysfunction and apply G-CSF to mice to test our hypothesis. Methods and Results Eleven out of fifteen iron and G-CSF treated mice I G showed thrombi formation in the left ventricular chamber with impaired cardiac function. Histological analysis revealed endothelial fibrosis increased macrophage infiltration and tissue factor expression in the I G mice hearts. Simvastatin treatment to I G mice attenuated their cardiac apoptosis iron deposition and abrogated thrombus formation by attenuating systemic inflammation and leukocytosis which was likely due to the activation of pAKT activation. However thrombosis in I G mice could not be suppressed by platelet receptor inhibitor tirofiban. Conclusions Our disease model demonstrated that G-CSF induces cardiac thrombosis through an inflammationthrombosis interaction and this can be attenuated via statin therapy. Present study provides a mechanism and potential therapy for G-CSF induced cardiac thrombosis. Background Granulocyte colony-stimulating factor G-CSF a hematopoietic cytokine induces .

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