PMID- 12480178 OWN - NLM STAT- MEDLINE DCOM- 20030616 LR - 20190826 IS - 0169-328X (Print) IS - 0169-328X (Linking) VI - 108 IP - 1-2 DP - 2002 Dec TI - Long-term high-frequency electro-acupuncture stimulation prevents neuronal degeneration and up-regulates BDNF mRNA in the substantia nigra and ventral tegmental area following medial forebrain bundle axotomy. PG - 51-9 AB - Electroacupuncture (EA) has been used in China for many years to treat Parkinson's disease (PD) with reportedly effective results. However, the physiological and biological mechanism behind its effectiveness is still unknown. In the present study, different frequencies of chronic EA stimulation (0, 2, 100 Hz) were tested in a partially lesioned rat model of PD which was induced by transection of the medial forebrain bundle (MFB). After 24 sessions of EA stimulation (28 days after MFB transection), dopaminergic neurons in the ventral midbrain were examined by immunohistochemical staining, and brain-derived neurotrophic factor (BDNF) mRNA levels in ventral midbrain were measured by in situ hybridization. The results show a marked decrease of dopaminergic neurons on the lesioned side of the substantia nigra (SN) comparing with the unlesioned side. Zero Hz and 2 Hz EA stimulation had no effect on the disappearance of dopaminergic neurons. However, after 100 Hz EA, about 60% of the tyrosine hydroxylase (TH)-positive neurons remained on the lesioned side of the SN. In addition, levels of BDNF mRNA in the SN and ventral tegmental area (VTA) of the lesioned side were significantly increased in the 100 Hz EA group, but unchanged in the 0 and 2 Hz groups. Our results suggest that long-term high-frequency EA is effective in halting the degeneration of dopaminergic neurons in the SN and up-regulating the levels of BDNF mRNA in the subfields of the ventral midbrain. Activation of endogenous neurotrophins by EA may be involved in the regeneration of the injured dopaminergic neurons, which may underlie the effectiveness of EA in the treatment of PD. FAU - Liang, Xi-Bin AU - Liang XB AD - Neuroscience Research Institute, Peking University, 38 Xueyuan Road, Beijing 100083, PR China. FAU - Liu, Xian-Yu AU - Liu XY FAU - Li, Feng-Qiao AU - Li FQ FAU - Luo, Yong AU - Luo Y FAU - Lu, Jun AU - Lu J FAU - Zhang, Wang-Ming AU - Zhang WM FAU - Wang, Xiao-Min AU - Wang XM FAU - Han, Ji-Sheng AU - Han JS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Brain Res Mol Brain Res JT - Brain research. Molecular brain research JID - 8908640 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Axotomy MH - Brain-Derived Neurotrophic Factor/*genetics/metabolism MH - China MH - Disease Models, Animal MH - Dopamine/metabolism MH - Electroacupuncture/*methods MH - Female MH - Humans MH - In Situ Hybridization MH - Medial Forebrain Bundle/*surgery MH - Neurons/chemistry/metabolism MH - Parkinson Disease/therapy MH - RNA, Messenger/*metabolism MH - Random Allocation MH - Rats MH - Substantia Nigra/cytology/*metabolism MH - Tyrosine 3-Monooxygenase/metabolism MH - Up-Regulation/physiology MH - Ventral Tegmental Area/cytology/*metabolism EDAT- 2002/12/14 04:00 MHDA- 2003/06/17 05:00 CRDT- 2002/12/14 04:00 PHST- 2002/12/14 04:00 [pubmed] PHST- 2003/06/17 05:00 [medline] PHST- 2002/12/14 04:00 [entrez] AID - S0169328X02005132 [pii] AID - 10.1016/s0169-328x(02)00513-2 [doi] PST - ppublish SO - Brain Res Mol Brain Res. 2002 Dec;108(1-2):51-9. doi: 10.1016/s0169-328x(02)00513-2.