Electroacupuncture improves neurovascular unit reconstruction by promoting collateral circulation and angiogenesis

Area of Science:

• Neuroscience
• Medical Acupuncture
• Stroke Research

Background:

• Acupuncture at Shuigou (GV26) is clinically effective for stroke treatment.
• The underlying mechanisms of acupuncture's efficacy in stroke remain unclear.

Purpose of the Study:

• To investigate the therapeutic mechanisms of electroacupuncture at GV26 in a cerebral infarction model.
• To evaluate the effects of electroacupuncture on cerebral blood flow, angiogenesis, and neurological function.

Main Methods:

• A cerebral infarction model was induced via ischemia/reperfusion injury.
• Electroacupuncture was applied at GV26 (15 Hz, 1 mA, continuous wave) for 5 minutes.
• Regional cerebral blood flow, infarct volume, lectin, vascularization, von Willebrand factor, Ki67 expression, and neurological deficit scores were assessed.

Main Results:

• Electroacupuncture promoted regional cerebral blood flow in both infarct and non-infarct areas.
• The treatment increased infarct lesions, lectin, and blood vessel density.
• Upregulation of von Willebrand factor and Ki67 expression indicated enhanced angiogenesis and cell proliferation.
• Neurological severity scores were significantly diminished.

Conclusions:

• Electroacupuncture at GV26 effectively promotes the establishment of collateral circulation and angiogenesis post-stroke.
• This therapeutic approach improves neurological function in a cerebral infarction model.
• The findings provide mechanistic insights into acupuncture's benefits for stroke recovery.