首页> 外文期刊>American Journal of Physiology >Effects of rosuvastatin on cardiovascular morphology and function in an ApoE-knockout mouse model of atherosclerosis.
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Effects of rosuvastatin on cardiovascular morphology and function in an ApoE-knockout mouse model of atherosclerosis.

机译:罗苏伐他汀对ApoE基因敲除小鼠动脉粥样硬化模型中心血管形态和功能的影响。

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This study investigated the effects of rosuvastatin on plaque progression and in vivo coronary artery function in apolipoprotein E-knockout (ApoE-KO) mice, using noninvasive high-resolution ultrasound techniques. Eight-week-old male ApoE-KO mice (n = 20) were fed a high-fat diet with or without rosuvastatin (10 micromol.kg(-1).day(-1)) for 16 wk. When compared with control, rosuvastatin reduced total cholesterol levels (P < 0.05) and caused significant retardation of lesion progression in the brachiocephalic artery, as visualized in vivo using an ultrasound biomicroscope (P < 0.05). Histological analysis confirmed the reduction of brachiocephalic atherosclerosis and also revealed an increase in collagen content in the statin-treated group (P < 0.05). Coronary volumetric flow was measured by simultaneous recording of Doppler velocity signals and left coronary artery morphology before and during adenosine infusion. The hyperemic flow in response to adenosine was significantly greater in left coronary artery following 16 wk of rosuvastatin treatment (P < 0.001), whereas the baseline flow was similar in both groups. In conclusion, rosuvastatin reduced brachiocephalic artery atherosclerotic plaques in ApoE-KO mice. Coronary artery function assessed using recently developed in vivo ultrasound-based protocols, also improved.
机译:这项研究使用无创高分辨率超声技术研究了瑞舒伐他汀对载脂蛋白E基因敲除(ApoE-KO)小鼠斑块进展和体内冠状动脉功能的影响。对八周大的雄性ApoE-KO小鼠(n = 20)喂饲高脂饮食,含或不含瑞舒伐他汀(10 micromol.kg(-1).day(-1))16周。与对照组相比,瑞舒伐他汀降低了总胆固醇水平(P <0.05),并导致头颅动脉病变进展明显减慢,如在体内使用超声生物显微镜观察到的(P <0.05)。组织学分析证实了头颅动脉粥样硬化的减少,并且他汀类药物治疗组的胶原蛋白含量也有所增加(P <0.05)。通过在腺苷输注之前和期间同时记录多普勒速度信号和左冠状动脉形态来测量冠状动脉血流量。瑞舒伐他汀治疗16周后,左冠状动脉对腺苷的充血流量显着增加(P <0.001),而两组的基线血流量相似。总之,罗苏伐他汀减少了ApoE-KO小鼠的头颅动脉粥样硬化斑块。使用最近开发的基于体内超声的方案评估的冠状动脉功能也得到了改善。

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