Anti-hypertension Effect of Selecting Taichong(LR3) as the Major Point plus Its Common-meridian Acupoint on Rats with Spontaneous Hypertension

Objective To observe the anti-hypertension effect of selecting Taichong(LR3) as the major point plus its common-meridian acupoint on the spontaneous hypertension rat(SHR), and to explore the effect of acupoint compatibility on the action of acupoints. Method Ninety SHRs were randomized into a model group, a non-acupoint group, Taichong group, Neiguan(PC6) group, Taichong plus Neiguan group, and Taichong plus non-acupoint group, 15 rats in each group. The acupuncture needles were retained in acupoints for 30 min, once every day, 15 times in total; the model group didn't receive acupuncture treatment. The blood pressure was examined on the day 1, 3, 7, and 15 of the acupuncture treatment. Result The non-acupoint group didn't show significant anti-hypertension effect. On the day 3, 7, and 15 of the acupuncture treatment, the reductions of systolic blood pressure(SBP), diastolic blood pressure(DBP), and mean arterial blood pressure(MBP) of Taichong group, Neiguan group, Taichong plus non-acupoint group, and Taichong plus Neiguan group were significantly different from those of the model group(P0.01,P 0.05); on the day 15, The reductions of SBP, DBP, and MBP of Taichong plus Neiguan group were superior to those of Taichong group, Neiguan group, and Taichong plus non-acupoint group(P0.01,P0.05). On the day 1, 3, 7, and 15, the reductions of SBP, DBP, and MBP in Taichong plus Neiguan group were statistically significant(P0.01,P0.05), and the reductions on the day 15 were significantly better than those on the day 1, 3, and 7(P0.01). Conclusion Acupuncture at Taichong and Neiguan has better anti-hypertension effect than acupuncture at single acupoint or at Taichong plus non-acupoint. Meanwhile, it's found that the anti-hypertension effect of acupuncture is an accumulative effect.