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Fruit-juice concentrate of Asian plum inhibits growth signals of vascular smooth muscle cells induced by angiotensin II.

机译:亚洲李子的果汁浓缩物抑制血管紧张素II诱导的血管平滑肌细胞的生长信号。

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Bainiku-ekisu, the fruit-juice concentrate of the Oriental plum (Prunus mume) has recently been shown to improve human blood fluidity. We have shown that angiotensin II (AngII) stimulates growth of vascular smooth muscle cells (VSMCs) through epidermal growth factor (EGF) receptor transactivation that involves reactive oxygen species (ROS) production. To better understanding the possible cardiovascular protective effect of Bainiku-ekisu, we have studied whether Bainiku-ekisu inhibits AngII-induced growth promoting signals in VSMCs. Bainiku-ekisu markedly inhibited AngII-induced EGF receptor transactivation. H(2)O(2)-induced EGF receptor transactivation was also inhibited by Bainiku-ekisu. Thus, Bainiku-ekisu markedly inhibited AngII-induced extracellular signal-regulated kinase (ERK) activation. However, EGF-induced ERK activation was not affected by Bainiku-ekisu. AngII stimulated leucine uptake in VSMCs that was significantly inhibited by Bainiku-ekisu. Also, Bainiku-ekisu possesses a potent antioxidant activity. Since the activation of EGF receptor, ERK and the production of ROS play central roles in mediating AngII-induced vascular remodeling, these data suggest that Bainiku-ekisu could exert a powerful cardiovascular protective effect with regard to cardiovascular diseases.
机译:最近显示,东方李子(李子梅)的果汁浓缩汁Bainiku-ekisu可改善人体血液流动性。我们已经表明,血管紧张素II(AngII)通过涉及反应性氧(ROS)产生的表皮生长因子(EGF)受体反式激活刺激血管平滑肌细胞(VSMC)的生长。为了更好地理解Bainiku-ekisu可能的心血管保护作用,我们研究了Bainiku-ekisu是否抑制VSMC中AngII诱导的促生长信号。 Bainiku-ekisu明显抑制AngII诱导的EGF受体反式激活。 H(2)O(2)诱导EGF受体反式激活也被Bainiku-ekisu抑制。因此,Bainiku-ekisu显着抑制了AngII诱导的细胞外信号调节激酶(ERK)的激活。但是,EGF诱导的ERK激活不受Bainiku-ekisu影响。 AngII刺激VSMC中亮氨酸的摄取,Bainiku-ekisu明显抑制了该摄取。此外,Bainiku-ekisu还具有强大的抗氧化活性。由于EGF受体的激活,ERK的产生和ROS的产生在介导AngII诱导的血管重塑中起着核心作用,因此这些数据表明Bainiku-ekisu可以在心血管疾病方面发挥强大的心血管保护作用。

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