Abstract
Acupuncture treatment is one of the most desirable choices for the management of pain including chronic visceral pain, but its scientific evidence and laws of action are not very clear at this point. In this study, we examined the immediate and cumulative effects of electro-acupuncture (EA) on chronic visceral pain induced by colorectal distention (CRD) stimuli in rats using an irritable bowel syndrome (IBS) model (a chronic visceral hypersensitivity model). The results demonstrated that EA could significantly depress both abnormally increased abdominal withdrawal reflex (AWR) scores and the magnitude of electromyograms (EMGs) recorded from the rectus abdominis in response to CRD stimulation at strengths of 20, 40, 60, and 80 mmHg. Repeated EA treatment for 14 days showed that the effects of EA on both abnormal AWRs and EMGs appeared 2-4 days after the start of the EA application session, gradually enhanced to its maximum within 8-12 days, and lasted 5 days after EA treatment stopped. These data provide evidence that visceral pain associated with the rat IBS model can be effectively treated by EA and opens up the possibility of clinical treatment of chronic visceral pain with acupuncture.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 20-23 |
| Number of pages | 4 |
| Journal | Neuroscience Letters |
| Volume | 376 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 7 2005 |
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Keywords
- Abdominal withdrawal reflex
- Chronic visceral hyperalgesia
- Colorectal distention stimulation
- Electro-acupuncture
- Irritable bowel syndrome
- Rectus abdominis muscle
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Electro-acupuncture relieves chronic visceral hyperalgesia in rats. / Cui, K. M.; Li, W. M.; Gao, X.; Chung, K.; Chung, Jin; Wu, G. C.
In: Neuroscience Letters, Vol. 376, No. 1, 07.03.2005, p. 20-23.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electro-acupuncture relieves chronic visceral hyperalgesia in rats
AU - Cui, K. M.
AU - Li, W. M.
AU - Gao, X.
AU - Chung, K.
AU - Chung, Jin
AU - Wu, G. C.
PY - 2005/3/7
Y1 - 2005/3/7
N2 - Acupuncture treatment is one of the most desirable choices for the management of pain including chronic visceral pain, but its scientific evidence and laws of action are not very clear at this point. In this study, we examined the immediate and cumulative effects of electro-acupuncture (EA) on chronic visceral pain induced by colorectal distention (CRD) stimuli in rats using an irritable bowel syndrome (IBS) model (a chronic visceral hypersensitivity model). The results demonstrated that EA could significantly depress both abnormally increased abdominal withdrawal reflex (AWR) scores and the magnitude of electromyograms (EMGs) recorded from the rectus abdominis in response to CRD stimulation at strengths of 20, 40, 60, and 80 mmHg. Repeated EA treatment for 14 days showed that the effects of EA on both abnormal AWRs and EMGs appeared 2-4 days after the start of the EA application session, gradually enhanced to its maximum within 8-12 days, and lasted 5 days after EA treatment stopped. These data provide evidence that visceral pain associated with the rat IBS model can be effectively treated by EA and opens up the possibility of clinical treatment of chronic visceral pain with acupuncture.
AB - Acupuncture treatment is one of the most desirable choices for the management of pain including chronic visceral pain, but its scientific evidence and laws of action are not very clear at this point. In this study, we examined the immediate and cumulative effects of electro-acupuncture (EA) on chronic visceral pain induced by colorectal distention (CRD) stimuli in rats using an irritable bowel syndrome (IBS) model (a chronic visceral hypersensitivity model). The results demonstrated that EA could significantly depress both abnormally increased abdominal withdrawal reflex (AWR) scores and the magnitude of electromyograms (EMGs) recorded from the rectus abdominis in response to CRD stimulation at strengths of 20, 40, 60, and 80 mmHg. Repeated EA treatment for 14 days showed that the effects of EA on both abnormal AWRs and EMGs appeared 2-4 days after the start of the EA application session, gradually enhanced to its maximum within 8-12 days, and lasted 5 days after EA treatment stopped. These data provide evidence that visceral pain associated with the rat IBS model can be effectively treated by EA and opens up the possibility of clinical treatment of chronic visceral pain with acupuncture.
KW - Abdominal withdrawal reflex
KW - Chronic visceral hyperalgesia
KW - Colorectal distention stimulation
KW - Electro-acupuncture
KW - Irritable bowel syndrome
KW - Rectus abdominis muscle
UR - http://www.scopus.com/inward/record.url?scp=13444270784&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=13444270784&partnerID=8YFLogxK
U2 - 10.1016/j.neulet.2004.11.018
DO - 10.1016/j.neulet.2004.11.018
M3 - Article
VL - 376
SP - 20
EP - 23
JO - Neuroscience Letters
JF - Neuroscience Letters
SN - 0304-3940
IS - 1
ER -