抗前蛋白转化酶枯草杆菌蛋白酶Kexin9型(抗PCSK9)化合物及其用于治疗和/或预防心...的制作方法_5

文档序号:9475318阅读:来源:国知局
影响要求保护的发明的基本 和新颖的(多个)特征。体现本发明的所有的组合物和使用它们的方法可以,在替代的实 施方案中,由过渡术语"包括","基本上由......组成"和"由......组成"中的任一个具 体地限定。
[0139] 实施例5
[0140] 在动物模型中测试功效
[0141] 在雄性小鼠(C57BL/6小鼠)中测试SBC-115076和SBC-110034的功效。在气候 控制条件下以每笼四只动物饲养小鼠,温度(20_24°C ),湿度(60-70% ),以及交替12小时 光/暗循环。将小鼠分为五组,如图7所示。一组喂商用食物饮食(Prolab RMH 3000, PMI feeds, St. Louis, M0)以用作阴性对照,而其他四组饲喂高脂饮食(TD. 06414),其从脂肪提 供热量的60%。自由提供水。每周采集血浆一次以监测LDL水平。4个星期饲喂高脂饮 食后,小鼠被随机分配到几组中的一组,使得不同组间的平均LDL水平相等。用媒介物处 理喂食高脂饮食的四组小鼠中的一组并用作阳性对照,而其他三组中的每一组每天用8mg/ kg的其中一种上述化合物皮下地处理两周。在药物施用之后每周两次经由每管含有2USP 单位的铵肝素的肝素化毛细管(Carolina,Burlington,NC)从眼眶后静脉丛采集血液样品 (75yl)。通过在室温下离心(5000x g)5分钟立即分离血浆并保持在-80°C下直至测定脂 质分布。酶促测定血浆胆固醇,LDL-C、HDL-C和甘油三酯水平。此外,为PCSK9抑制剂的潜 在多效性效果使用ELISA和多重测定法测定PCSK9和趋化因子/细胞因子的血浆水平。
[0142] 获得的数据表明,SBC-115076和SBC-110034在饲喂高脂肪食物的小鼠中降低胆 固醇的水平。图8显示用SBC-115076获得数据,其表明相对于高脂饮食动物水平,两周之 后SBC-110736示出总胆固醇水平的平均32%的减少(P〈0. 01),以及趋向恢复到正常饮食 胆固醇水平的平均50%减少(P〈0. 01)。
[0143] 用阿托伐他汀(40mg/kg,三周)进行第二项研究。数据显示,利用阿托伐他汀,相 对于高脂饮食动物水平,三周之后总胆固醇水平平均降低27% (P〈0. 01),以及趋向恢复到 正常饮食胆固醇水平降低平均44% (P〈0. 01)(图9)。
[0144] 参考文献
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