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KMID : 0352119980140030290
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Journal of Kyung Hee University
1998 Volume.14 No. 3 p.290 ~ p.302
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ANALGESIC EFFECT OF MANUAL ACUPUNCTURE AND ELECTROACUPUNCTURE COMBINED WITH TWIRLING METHOD
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Abstract
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Twirling the needle (TN) is one of several needling methods frequently used for acupuncture in the oriental medicine. The present study was conducted to see if TN enhanced the antinociceptive effect produced by plainor electroacupuncture in the rat tail flick test. Rats(Sprague-Dawley, 200~300g) lightly anesthetized with thiopental sodium (40㎎/㎏, i.p.) were used in the tail-flick test. The basal reaction time for tail-flick was 2 sec. For "plain" acupuncture (PA), a needle was inserted for 20 min into a Chock-samni(ST36) acupuncture point which (is located at the anterior tibial muscle and about 10㎜ below the knee joint). For electroacupuncture (EA), train-pulses (3Hz, 0.3 ms pulse width, 0.2~03mA) were applied to the inserted needle for the period of insertion. For combining TN with either PA or EA, TN was performed during the each acupuncture period. Two methods for TN were used; Twirling 3 times for 1 second persisted for 1 min in every 5 mins(long-duration and long-interval; LDLI) and twirling 3 times for 1 second persisted for 10 sec in every 1 min(short-duration and short-interval; SDSI). PA and EA produced an increase in tail flick latency (TFL); peak increases were 21.3±5.1% and 42.1±17.3% of the pre-acupunture control, respectively, and occurred immediately after cessation of 20 min-acupuncture. Performing TN combined with PA increased TFL more than PA itself by showing a greater peak increase in TFL when performed with a SDSI-TN than with a LDLI-TN (60.6±12.5% and 42.7±22.7% of the pre-acupuncture control, respectively). Performing TN combined with EA also increased TFL more than EA itself and a greater peak increase in TFL was observed with a SDSI-TN as compared to a LDLI-TN (77.5±13.8% and 67.3±14.0% of the pre-acupuncture control, respectively). These results indicate that TN enhances both PA- and EA-produced antinociception where an enhancement is greater for the latter than for the former and that for both cases a SDSI-TN produces a greater enhanced antinociception than a LDLI-TN. It is suggested that performing a SDSI-TN combined with EA seems to be one of the most effective ways to preduce analgesia.
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