摘要目的：观察针刺“足三里”“太冲”对自发性高血压大鼠(spontaneously hypertensive rat， SHR)血压指标、心脏超声指标及病理学检测的影响，探讨其作用机制。方法14只10周龄SHR大鼠按随机数字表法分为模型组6只、针刺组8只，6只同周龄SD大鼠为空白对照组。针刺组大鼠针刺双侧“足三里”“太冲”，留针20 min/次，连续4周，模型组及空白对照组无针刺干预。每周检测血压，连续5周。在针刺干预结束次日，使用彩色超声心动仪测量并记录各组大鼠左室舒张末期室间隔厚度、舒张末期左室内径、收缩末期左室后壁厚度、左室舒张末期后壁厚度。计算左室质量、左室质量指数、相对室壁厚度。采用HE染色法观察各组大鼠心脏病理学改变。结果与模型组比较，针刺干预第3、4周，针刺组大鼠收缩压[第3周：(178.38±9.47)mmHg比(190.00±13.90)mmHg；第4周：(167.96±23.47)mmHg比(195.47±11.36)mmHg]、舒张压[第3周：(139.33±13.20)mmHg比(159.56±12.89)mmHg；第4周：(132.92±18.02)mmHg比(165.61±13.36)mmHg]降低(P＜0.01或P＜0.05)；针刺组大鼠左室舒张末期室间隔厚度[(0.96±0.07)mm 比(1.28±0.24)mm]、收缩末期左室后壁厚度[(1.15±0.08)mm 比(1.68±0.19)mm]、左室质量[(0.51±0.12)g 比(0.84±0.17)g]、左室质量指数[(14.96±1.53)比(23.65±5.04)]降低(P＜0.01)。HE 染色显示，模型组大鼠心肌外膜有慢性炎症伴肉芽组织增生及纤维化；针刺组大鼠心脏组织未见明显变化。结论针刺“足三里”“太冲”可有效降低 SHR 大鼠收缩压及舒张压，控制左室肥厚和心脏重构，对心肌细胞有保护作用。

abstractsObjective This study aims to explore antihypertension and heart protective effect of acupuncture on SHR rats through the observation of blood pressure, cardiac ultrasound and pathology examination of SHR rats after needling the Zusanli (ST 36) and Taichong (LR 3). Methods A total of 14 SHR rats (10 weeks) were randomly divided into two groups:6 for model group and 8 for acupuncture group, another 6 SD rats (10 weeks) were used as the control group. SHR rats in the acupuncture group were fixed in the holder, and then they exposed both lower limbs for needling both sides Zusanli (ST 36) and Taichong (LR 3), and then they retained needles for 20 minutes per time with four weeks. The other two groups were fixed in the holder without needling. Blood pressure was examined each week. LVSs, LVDd, LVPWs, LVPWd were measured and recorded by cardiac ultrasound in the day after the whole course of acupuncture. LVM, LVMI, RWT were calculated. The hearts of rats were dissected and fixed in formalin for heart pathology detection after doing the cardiac ultrasound. Results After acupuncture treatment, compared with model group, the systolic blood pressure (SBP) of the third week (178.38 ± 9.47 mmHg vs. 190.00 ± 13.90 mmHg) and the fourth week (167.96 ±&nbsp;23.47 mmHg vs. 195.47 ± 11.36 mmHg) of acupuncture group significantly decreased (P<0.01). The diastolic pressure (DBP) of the third week (139.33 ± 13.20 mmHg vs. 159.56 ± 12.89 mmHg) and the fourth week (132.92 ± 18.02 mmHg vs. 165.61 ± 13.36 mmHg) of acupuncture group significantly decreased (P<0.01). The LVSs (0.96 ± 0.07 vs. 1.28 ± 0.24), LVPWs (1.15 ± 0.08 vs. 1.68 ± 0.19) of the acupuncture group were significantly lower than those of the model group (P<0.01). The LVM (0.51 ± 0.12 vs. 0.84 ± 0.17) and LVMI (14.96 ± 1.53 vs. 23.65 ± 5.04) of acupuncture group were significantly lower than those of the model group (P<0.01). Histopathologic examination of the heart of the model group showed chronic inflammatory granulation tissue hyperplasia and fibrosis in myocardial outer membrane, but the acupuncture group showed no obvious changes in the heart tissue. Conclusions Acupuncture treatment on Zusanli (ST 36) and Taichong (LR 3) could effectively control the left ventricular hypertrophy by decreasing the SBP and DBP , prevent cardiac remodeling, and protect myocardial cells.