PMID- 23342772 OWN - NLM STAT- MEDLINE DCOM- 20130226 LR - 20161020 IS - 1000-0607 (Print) IS - 1000-0607 (Linking) VI - 37 IP - 5 DP - 2012 Oct TI - [Effect of electroacupuncture at different acupoints on expression of cervico-spinal GDNF and BDNF and their receptor genes in neck-incision pain rats]. PG - 351-6 AB - OBJECTIVE: To observe the effect of electroacupuncture (EA) of "Futu" (LI 18), etc. on the expression of genes of glial cell line-derived neurotrophic factor (GDNF), brain-derived neurotrophic factor (BDNF) and their receptors in the cervico-spinal cord in neck-incision pain rats, so as to study its mechanism underlying incision-pain relief. METHODS: A total of 50 Sprague Dawley male rats were randomly divided into normal, model (incision pain), EA-Futu (LI 18), EA- Hegu (LI 4) - Neiguan (PC 6, LI 4-PC 6) and EA-Zusanli (ST 36)-Yanglingquan (GB 34, ST 36-GB 34) groups (n = 10/group). A 1.5 cm long longitudinal incision was made along the midline of the neck under anesthesia to duplicate neck-incision pain model. Thermal pain threshold (PT) was measured before and after modeling and after the treatment, respectively. EA (1-2 mA, 2 Hz/100 Hz) was applied to bilateral LI 18, PC 6-LI 4 and ST 36-GB 34 for 30 min. The expression of genes of GDNF and its receptor GFRalpha-1, and BDNF and its receptors TrkA, TrkB in the spinal cord (C1 - C4) tissue was detected by quantitative real-time-PCR. RESULTS: In comparison with pre-modeling in the same one group, the thermal PT levels were decreased obviously in the model, LI 18, LI 4-PC 6 and ST 36-GB 34 groups after neck incision (P < 0.05). Compared with the model group, the PT levels were increased markedly in LI 18, LI 4-PC 6 and ST 36-GB 34 groups after the EA treatment (P < 0.05). Correspondingly, the expression levels of spinal GDNF mRNA and GFRalpha-1 mRNA were obviously lower, as well as BDNF mRNA was markedly higher in the model group than in the control group (P < 0.05), and those of TrkA mRNA and TrkB mRNA were increased slightly in the model group than in the control group (P > 0.05). In comparison with the model group, the expression levels of spinal GDNF mRNA and GFRalpha-1 mRNA were up-regulated considerably (P < 0.001), whereas those of BDNF mRNA, TrkA mRNA and TrkB mRNA were decreased slightly (P > 0.05) in the LI 18, LI 4-PC 6 and ST 36-GB 34 groups after EA treatment. CONCLUSION: EA stimulation can significantly suppress pain reaction of neck incision, which is closely associated with its effects in up-regulating the expression of GDNF and its receptor GFRalpha-1 genes in the cervical spinal cord (C1 - C4). FAU - Wang, Shao-Jun AU - Wang SJ AD - Institute of Acu-moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China. FAU - Tan, Lian-Hong AU - Tan LH FAU - Liu, Jun-Ling AU - Liu JL LA - chi PT - Comparative Study PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhen Ci Yan Jiu JT - Zhen ci yan jiu = Acupuncture research JID - 8507710 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor Receptors) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - *Acupuncture Points MH - Animals MH - Brain-Derived Neurotrophic Factor/*genetics/metabolism MH - *Electroacupuncture MH - Gene Expression MH - Glial Cell Line-Derived Neurotrophic Factor/*genetics/metabolism MH - Glial Cell Line-Derived Neurotrophic Factor Receptors/*genetics/metabolism MH - Humans MH - Male MH - Neck Pain/*genetics/metabolism/surgery/*therapy MH - Rats MH - Rats, Sprague-Dawley MH - Receptor, trkB/*genetics/metabolism MH - Spinal Cord/metabolism EDAT- 2013/01/25 06:00 MHDA- 2013/02/27 06:00 CRDT- 2013/01/25 06:00 PHST- 2013/01/25 06:00 [entrez] PHST- 2013/01/25 06:00 [pubmed] PHST- 2013/02/27 06:00 [medline] PST - ppublish SO - Zhen Ci Yan Jiu. 2012 Oct;37(5):351-6.