Atorvastatin Downregulates BMP-2 Expression Induced by Oxidized Low-Density Lipoprotein in Human Umbilical Vein Endothelial Cells

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  • Zhang Ming
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Zhou Sheng-Hua
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Li Xu-Ping
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Shen Xiang-Qian
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Fang Zhen-Fei
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Liu Qi-Ming
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Qiu Shuang-Fa
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha
  • Zhao Shui-Ping
    Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha

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Abstract

Background Bone morphogenetic protein-2 (BMP-2) plays a key role both in vascular development and pathophysiological processes. However, the effects of oxidized low-density lipoprotein (ox-LDL) combined with atorvastatin on BMP-2 expression are entirely unknown in human umbilical vein endothelial cells (HUVECs). The present study investigates the effects of ox-LDL on BMP-2 expression. Furthermore, the influence of atorvastatin on ox-LDL-induced BMP-2 expression is also examined. Methods and Results The HUVECs were treated by ox-LDL or combined with pyrrolidine dithiocarbamate (PDTC) or atorvastatin. The expression level of BMP-2 mRNA was examined by real-time PCR and RT-PCR analysis. The expression of BMP-2 protein was assayed by enzyme-linked immunosorbent assay. The malondialdehyde (MDA) and activities of total superoxide dismutase (SOD) were detected by routine methods. The activation of nuclear factor κB (NF-κB) in HUVECs was determined using an assay kit from active motif and western blot analysis. Ox-LDL treatment significantly increased BMP-2 expression, which is associated with NF-κB activation, but BMP-2 expression was suppressed by treatment with PDTC or atorvastatin. Furthermore, the increase in MDA levels and decrease in activities of total SOD caused by ox-LDL treatment were reversed by the treatment of PDTC or atorvastatin. Conclusions Ox-LDL-induced BMP-2 expression was suppressed by PDTC or atorvastatin treatment. The effects of atorvastatin might contribute to the mechanisms by inhibiting NF-κB activation. (Circ J 2008; 72: 807 - 812)<br>

Journal

  • Circulation Journal

    Circulation Journal 72 (5), 807-812, 2008

    The Japanese Circulation Society

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