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Effects of Electroacupuncture on Immobilization Stress Responses : A Study on Inhibitory Avoidance Task, Forced Swimming Test, and Stress Hormones  

Kwon, So-Yeon (Dept. of Internal medicine, College of Oriental medicine Won-Kwang)
Kim, Min-Soo (Dept. of Statistics, Chonnam National University)
Lee, Sang-Kwan (Dept. of Internal medicine, College of Oriental medicine Won-Kwang)
Je, Jun-Tae (Dept. of Internal medicine, College of Oriental medicine Won-Kwang)
Oh, Jae-Gun (Dept. of Internal medicine, College of Oriental medicine Won-Kwang)
Lee, Jong-Deok (Dept. of Internal medicine, College of Oriental medicine Won-Kwang)
Sung, Kang-Keyng (Dept. of Internal medicine, College of Oriental medicine Won-Kwang)
Publication Information
The Journal of Internal Korean Medicine / v.32, no.1, 2011 , pp. 100-112 More about this Journal
Abstract
Objectives : This study investigated the effects of electroacupuncture on memory, depression, and plasma stress hormone levels in rats that were under immobilization stress. Materials and Methods : The immobilization-only group was given two hours of immobilization stress for 10 consecutive days. The immobilization and high frequency EA group was given two hours of immobilization stress simultaneously with high frequency (100Hz) electroacupuncture stimulation on the right ST-36 (Zusanli) for 10 consecutive days. We conducted the inhibitory avoidance and forced swimming tests to recognize whether immobilization stress and electroacupuncture have effects on memory and depression. We collected blood samples from the tail of each rat at 30, 60, 90, and 120-minute intervals during the immobilization stress and EA stimulation to measure plasma concentrations of ACTH, corticosterone, melatonin, and norepinephrine induced by immobilization stress and electroacupuncture. Results : There was a significant effect of high frequency on the increase in anamnesis based on the result of the inhibitory avoidance test, but there was no significant effect of decreasing depression based on the result of the forced swim test. Also, there was no significant effect on the response indicated by stress hormones. Conclusions : 1. High frequency electroacupuncture (100Hz) improved anamnesis in immobilization stress states under the inhibitory avoidance task. 2. High frequency electroacupuncture (100Hz) did not reduce depression induced by immobilization stress under the forced swimming test. 3. High frequency electroacupuncture (100Hz) did not decrease stress hormones through blood sampling.
Keywords
Immobilization stress; Electroacupuncture; Inhibitory avoidance task; Forced swimming test; Stress hormone;
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Times Cited By KSCI : 2  (Citation Analysis)
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