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KMID : 0357220070190010067
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Journal of Korean Society Physical Therapy
2007 Volume.19 No. 1 p.67 ~ p.78
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Anti-hyperalgesic Effects of Electroacupuncture Combination of Microcurrent Stimulation in Rat with Induced Inflammation
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Kim Young-Phil
Lee Jeong-Woo
Seo Sam-Ki
Yoon Se-Won
Yoon Hee-Jong
Kim Tae-Youl
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Abstract
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Purpose: The purpose of this study were to examine the anti-hyperalgesic effects of combination of electroacupuncture and microcurrent on anti-hyperalgesia in local hyperalgesia zone.
Methods: It used 24 rats for experiment, divided them into control group, electroacupuncture group (EA group), microcurrent group (MC group), combination of electroacupuncture with microcurrent (EA+MC group), caused hyperalgesia by injecting ${\lambda}-carrageenan$ into hindpaw. Thickness of hindpaw, mechanical pain threshold (MPT), thermal pain threshold (TPT), noxious flexion withdrawal reflex (NFR) and somatosensory evoked potential (SEP) were measured immediately after induction, at 24 hours, 48 hours and 72 hours after induction. The electrical stimulation was given once a day for three days, 20min per session.
Results: Change of thickness, MPT, and TPT showed significant difference in all groups compared to control group. In particular, there were remarkable difference in EA+ME group. In particular there were remarkable differences in EA group and EA+MC group. Change of NFR(% threshold, % reaction time, % RMS) and SEP showed mainly significant differences in EA group and EA+ME group compared to control group. In particular, there were remarkable difference in EA+ME group.
Conclusions: The above results suggest that appropriate combination of microcurrent with electroacupuncture for pain control will be very desirable.
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KEYWORD
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Electroacupuncture, Microcurrent stimulation, Hyperalgesia
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