• William E. Leigh III

Peripheral Sensory Nerve Tissue but Not Connective Tissue Is Involved in the Action of Acupuncture.

Suchan Chang,1,† O. Sang Kwon,2,† Se Kyun Bang,1 Do-Hee Kim,1 Min Won Baek,1 Yeonhee Ryu,2 Jong Han Bae,3 Yu Fan,1 Soo Min Lee,1 Hyung Kyu Kim,1 Bong Hyo Lee,1 Chae Ha Yang,1 and Hee Young Kim1,3,


Abstract

Acupuncture has been used to treat a variety of diseases and symptoms for more than 2,500 years. While a number of studies have shown that nerves are responsible for initiating the effects of acupuncture, several lines of study have emphasized the role of connective tissue in the initiation of acupuncture signals. To determine whether nerves or connective tissue mediate the action of acupuncture, we constructed a robotic acupuncture needle twister that mimicked the twisting of the needle by an acupuncturist, and we examined the role of nerves and connective tissues in the generation of acupuncture effects in rat cocaine-induced locomotion, stress-induced hypertension, and mustard oil-induced visceral pain models. Robotic or manual twisting of acupuncture needles effectively suppressed cocaine-induced hyperactivity, elevated systemic blood pressure or mustard oil-induced visceral pain in rats. These acupuncture effects were completely abolished by injecting bupivacaine, a local anesthetic, into acupoints. However, disruption of connective tissue by injecting type I collagenase into acupoints did not affect these acupuncture effects. Our findings suggest that nerve tissue, but not connective tissue, is responsible for generating the effects of acupuncture.


Keywords: acupuncture, peripheral sensory nerve, connective tissue, robotic acupuncture needle twister, collagenase

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