This blog is to share the latest research and development of acupuncture and raise the awareness of alternative treatments for your conditions, and is for information only.

Friday 7 November 2014

Mechanism underlying the effect of acupuncture on stroke

Acupuncture stimulation at acupoints one day after cerebral ischemia significantly reduced the cerebral infarct area and neurological deficit scores accompanied by increasing release of neurotrophic factors and activating anti-apoptosis process in the brain of stroke model according to a study recently reported in the journal BMC Complementary and Alternative Medicine.

It has been reported here before that earlier acupuncture as an adjunct helped improve symptoms of patients with early stage stroke. However, how acupuncture exerts its therapeutic effect is not clear.

Recently researchers in Taiwan investigated the effect of early acupuncture stimulation on stroke model and the mechanism of action of acupuncture. Electroacupuncture stimulation at GV20 and GV14 was applied on mild cerebral ischemia injury rat, a mild stroke model, one day after ischemia formation for 2 days. Neurological functions such as motor, sensory, balance and reflex were assessed before and after acupuncture.

It was found that acupuncture stimulation significantly improved neurological functions and reduced cerebral infarct area compared with baseline and non-acupoint treated group. Biochemical studies showed that acupuncture markedly increased the release of neurotrophic factors and initiated anti-apoptotic process compared with controls. Blockers of neurotrophic factors stopped the neuroprotective effect of acupuncture in the stroke model.

The study suggests that early acupuncture use may act as neuroprotective therapy in the treatment of stroke.

Reference:
Cheng et al., Electroacupuncture-like stimulation at Baihui and Dazhui acupoints exerts neuroprotective effects through activation of the brain-derived neurotrophic factor-mediated MEK1/2/ERK1/2/ p90RSK/bad signaling pathway in mild transient focal cerebral ischemia in rats. BMC Complementary and Alternative Medicine2014,14:92    http://www.biomedcentral.com/1472-6882/14/92

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