Physiological impact of nanoporous acupuncture needles: Laser Doppler perfusion imaging in healthy volunteers

Journal Article · 10 December 2019 · PLoS ONE

DOI: https://doi.org/10.1371/journal.pone.0226304 · OSTI ID:1904930

Kim, Koh-Woon  ^[1]; Hong, Sanhwa ^[2]; Kim, Hong Soo ^[3]; Kim, Taehun ^[4]; Ahn, Jaeha ^[4]; Song, Hyun-Seo ^[4]; Kim, Yu-Kang ^[2]; Oh, Ju-Young  ^[2]; Hwang, Tae-Yeon ^[2]; Lee, Hyangsook ^[2]; In, Su-Il ^[3]; Park, Hi-Joon ^[2]; Claydon-Mueller, Leica S. ^[5]

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1. Kyung Hee Univ., Seoul (South Korea); OSTI
2. Kyung Hee Univ., Seoul (South Korea); College of Korean Medicine, Seoul (South Korea)
3. Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu (South Korea)
4. Kyung Hee Univ., Seoul (South Korea)
5. Anglia Ruskin Univ., Cambridge (United Kingdom)

Recently, porous acupuncture (PA), which is anodized to increase its surface area for higher stimulation intensity, was developed and showed significantly improved therapeutic effects with more comfort as compared with original acupuncture (OA) in vivo. However, the impact of PA on the change of local blood flow as well as its efficacy and acceptability has not yet been confirmed in a clinical trial. In a randomized, controlled crossover clinical trial, we investigated the effects of PA on the change in local blood flow using laser Doppler perfusion imaging and considered the sensation of pain intensity and discomfort severity using a visual analogue scale (VAS) to explore its physiological impact and the possibility of PA in clinical use. Twenty-one healthy participants were randomly treated with PA or OA on one side of Zusanli (ST36) and each participant served as his or her own control. Baseline local blood flow and galvanic skin response (GSR) were obtained for 5 min and acupuncture interventions were subsequently performed. Next, local blood flow and GSR were subsequently obtained for 10 min after insertion, 10 min after manipulation, and 5 min after the withdrawal of acupuncture. At the end of the experiment, participants were asked to indicate the sensation of pain intensity at each session of insertion, retention, manipulation, and withdrawal as well as the overall pain intensity and discomfort severity. PA significantly increased the local blood flow as compared with OA and there was no significant difference in GSR between patients treated with PA versus OA in each phase of insertion and manipulation. No significant difference in pain intensity or discomfort severity was found during manipulation, retention, or withdrawal of acupuncture. These results indicate that PA increases local blood flow, which can be closely related to the observed enhanced performance, without any associated discomfort or pain, suggesting its applicability in clinical practice.

• Research Organization: Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
• Sponsoring Organization: Ministry of Health & Welfare of Korea; National Research Foundation of Korea (NRF); USDOE Office of Science (SC)
• Grant/Contract Number: SC0014664
• OSTI ID: 1904930
• Journal Information: PLoS ONE, Journal Name: PLoS ONE Journal Issue: 12 Vol. 14; ISSN 1932-6203
• Publisher: Public Library of ScienceCopyright Statement
• Country of Publication: United States
• Language: English