奥美沙坦酯对自发性高血压大鼠血清蛋白质表达谱的影响

目的探讨奥美沙坦酯对自发性高血压大鼠(SHR)降压作用的蛋白质组学机制。方法选取雌雄各半12周龄的SHR,随机分为对照组(n=10)、奥美沙坦酯组(n=10)。对照组给予0.9%生理盐水灌胃,奥美沙坦酯组给予奥美沙坦酯配制的混悬液灌胃,两组均连续灌胃四周后,分离血清,每组随机各取5份血清样品。基质辅助激光解析电离飞行时间质谱(MALDI-TOF-MS)测定肽质量指纹图谱(PMF),采用数据库检索鉴定各肽段对应的蛋白质,获取差异表达蛋白质的信息。结果对照组、奥美沙坦酯组凝胶上的平均蛋白点数分别为(476±30)、(508±55)个,两组经统计分析有20个显著差异点,奥美沙坦酯干预后表达增强13个,降低5个,蛋白点消失2个。对这20个差异蛋白点进行质谱分析,鉴定出的8个蛋白质分别为线粒体膜蛋白、锌指蛋白、T细胞受体、视黄醇结合蛋白、转甲状腺蛋白A链、Rho GTPase、假想蛋白(2个)。结论奥美沙坦酯对高血压的作用机制可能与线粒体膜蛋白、锌指蛋白、T细胞受体、转甲状腺蛋白A链高表达,视黄醇结合蛋白、Rho GTPase低表达有关。

The Effect of Olmesartan Medoxomil on Serum Protein Expression of Spontaneously Hypertensive Rats

Objective To investigate the mechanism underlying antihypertensive effect of olmesartan medoxomil using proteomics technique in spontaneously hypertensive rat(SHR).Methods Twenty SHR(male and female each in half) aged 12-weeks were randomly divided into control and olmesartan medoxomil group.The control group were treated with 0.9% saline by gavaged,while the olmesartan medoxomil group were given suspension made with olmesartan by gavage.After 4 weeks,serum was seperated in low-temperature.Five serum sample...