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Many patients cannot tolerate antihypertensive medications
due to their side effects. Increasingly patients are
seeking help in controlling their blood pressure with
acupuncture. In Chinese medicine elevated blood pressure
didn't exist as a condition since blood pressure readings
were not available. But many of the symptoms of extremely
high blood pressure are described in Chinese Medicine and
inform the treatment strategies used to decrease blood
pressure.
Evidence:
There is a recent German study published in the
medical journal "Circulation" showing that acupuncture is
effective in lowering systolic and diastolic blood
pressure using acupuncture. They compared the treatment
group to another group receiving sham acupuncture (1).
Science:
In determining the physiological mechanisms
involved in the anti-hypertensive effects, scientists at UC Irvine (2) were able to block the anti-hypertensive
effect of acupuncture by microinjecting kainic acid to
deactivate neurons in the arcuate nucleus which decreased
the ventrolateral periaqueductal grey responses to
splanchnic nerve stimulation. These results suggest that
excitatory projections from the arcuate nucleus to the
ventrolateral periaqueductal grey are essential to the
electroacupuncture inhibition of the reflex increase in
blood pressure induced by splanchnic nerve gallbladder
visceral afferent stimulation.
The same group had shown in a previous study that
acupuncture's blood pressure reducing effect was in part
mediated by endogenous opiods in the spinal cord (3).
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1. Circulation. 2007 Jun 19;115(24):3121-9. Randomized
trial of acupuncture to lower blood pressure.
2. 1: *Am J Physiol Heart Circ Physiol. 2006
Jun;290(6):H2535-42. Excitatory projections from arcuate
nucleus to ventrolateral periaqueductal gray in
electroacupuncture inhibition of cardiovascular reflexes.
3. J Appl Physiol. 2006 Mar;100(3):926-32. Modulation of
cardiovascular excitatory responses in rats by
transcutaneous magnetic stimulation: role of the spinal
cord.
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