平肾通络降压颗粒对自发性高血压大鼠血压及肾素-血管紧张素系统的影响

目的观察不同剂量平肾通络降压颗粒对自发性高血压大鼠（SHR）血压及肾素-血管紧张素系统（RAS）的影响。方法随机将SHR分为模型组、卡托普利对照组和平肾通络降压颗粒高、低剂量组。正常Wistar大鼠为空白对照组。每日同一时间按实验要求分别按1mL／100g体重灌药及蒸馏水，连续8周。分别于用药前和用药1、2、4、6、8周测定血压，以及血管紧张素（Ang），Ⅰ、AngⅡ和醛固酮（ALD）。结果SHR经治疗8周后，平肾通络降压颗粒高剂量组血压较治疗前明显下降，差异有统计学意义（P〈0．01）。卡托普利组降压作用起效更快，但至第8周时2组比较差异无统计学意义（P〉0．05），血浆AngⅡ、ALD含量下降，以ALD下降明显（P〈0．01）。显示平肾通络降压颗粒可降低SHR的血压，抑制RAS活性。结论平肾通络降压颗粒有稳定缓和的降压作用，能逆转高血压病早期肾损害。

Effect of Pingshen Tongluo Jiangya Granula on Blood Pressure and RAS of Spontaneously Hypertensive Rat

Objective To investigate the effect of the Pingshen Tongluo Jiangya granula on the blood pressure and RAS of spontaneously hypertensive rat （SHR）. Methods SHR were randomly divided into model group, high dosage group, lower dosage group and captopril group, with normal Wistar rats as control group. Different dosage of Pingshen Tongluo Jiangya granula, captopfil and water wes given orally to the rats at the same time of a day for 8 weeks. Blood pressure, Ang Ⅰ, AngⅡ and ALD were determined respectively before treatment and 1, 2, 4, 6, 8 week. Results After eight weeks, the blood pressure of high dosage of Pingshen Tongluo Jiangya granula group had stepped down obviously （P〈0.01）, while the effect of captopril group was quickly, but in the end both groups were same （P 〉0.05）. It shows that the granuia could decrease blood pressure, inhibit the activity of RAS caused by high blood pressure. Conclusion The granula can decrease blood pressure smoothly and steadily, as well as reverse early stage of renal damage caused by high blood pressttre.