RGD Reference Report - Electroacupuncture attenuates bone cancer pain and inhibits spinal interleukin-1 beta expression in a rat model. - Rat Genome Database

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Electroacupuncture attenuates bone cancer pain and inhibits spinal interleukin-1 beta expression in a rat model.

Authors: Zhang, RX  Li, A  Liu, B  Wang, L  Ren, K  Qiao, JT  Berman, BM  Lao, L 
Citation: Zhang RX, etal., Anesth Analg. 2007 Nov;105(5):1482-8, table of contents.
RGD ID: 7401210
Pubmed: PMID:17959986   (View Abstract at PubMed)
DOI: DOI:10.1213/01.ane.0000284705.34629.c5   (Journal Full-text)

BACKGROUND: Although pain affects the quality of life of cancer patients, current medical treatments are either ineffective or have side effects. In the present study we investigated the effect of electroacupuncture (EA) on cancer-induced hyperalgesia and expression of interleukin-1beta (IL-1beta), upregulation of which is related to the maintenance of persistent pain, in a rat model of bone cancer pain. METHODS: Cancer was induced by injecting AT-3.1 prostate cancer cells into the tibia of male Copenhagen rats. The resulting pain was treated with 10 Hz/2 mA/0.4 ms pulse EA for 30 min daily at the equivalent of the human acupoint GB30 (Huantiao) between Days 14 and 18 after cancer cell inoculation. For sham control, EA needles were inserted into GB30 without stimulation. Thermal hyperalgesia, a decrease in paw withdrawal latency to a noxious thermal stimulus, was measured at baseline and 20 min after EA treatment. IL-1beta and its mRNA were respectively determined by immunohistochemistry and reverse transcription-polymerase chain reaction analysis. RESULTS: Thermal hyperalgesia developed between Days 12 and 18 after cancer cell inoculation. EA significantly (P < 0.05) attenuated this hyperalgesia, increasing paw withdrawal latency from 7.0 +/- 0.3 s to 9.2 +/- 0.4 s, and inhibited the upregulation of IL-1beta and its mRNA compared to the sham control. Intrathecal injection of IL-1 receptor antagonist (IL-1ra, 0.1 mg/rat) also significantly inhibited cancer-induced thermal hyperalgesia. CONCLUSION: The data suggest that EA alleviates bone cancer pain, at least in part by suppressing IL-1beta expression. The results support the clinical use of EA in the treatment of cancer pain.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Hyperalgesia treatmentIDA 7401210 RGD 
Hyperalgesia treatmentISOIL1RN (Homo sapiens)7401210; 7401210 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Il1rn  (interleukin 1 receptor antagonist)

Genes (Mus musculus)
Il1rn  (interleukin 1 receptor antagonist)

Genes (Homo sapiens)
IL1RN  (interleukin 1 receptor antagonist)


Additional Information