Effects of electroacupuncture at Zusanli and Baihui on brain-derived neurotrophic factor and cyclic AMP response element-binding protein in the hippocampal dentate gyrus.
Previously, we observed that electroacupuncture (EA) at ST36 (Zusanli) and GV20 (Baihui) enhanced cell proliferation and neuroblast differentiation in the rat dentate gyrus. In this study, we investigated the possible mechanisms of EA in this effect. For this, we applied EA at ST36 and GV20 of Wistar rats (13-week-old) once a day for 3 weeks. Application of EA at these acupoints significantly increased the number of phosphorylated cyclic AMP response element-binding protein (pCREB)-immunoreactive cells in the dentate gyrus. In addition, EA significantly increased the levels of brain-derived neurotrophic factor (BDNF) and pCREB protein in the dentate gyrus. The administration of K252a, an inhibitor of BDNF receptor, significantly reduced cell proliferation in the subgranular zone of dentate gyrus. These results suggest that EA significantly increased neuroblast plasticity via pCREB and BDNF activation in the dentate gyrus.
Hwang
In Koo
IK
Department of Anatomy and Cell Biology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, South Korea.
Chung
Jin Young
JY
Yoo
Dae Young
DY
Yi
Sun Shin
SS
Youn
Hwa Young
HY
Seong
Je Kyung
JK
Yoon
Yeo Sung
YS
D015669:Acupuncture Points; D000818:Animals; D001921:Brain / Q000378:metabolism*; D019208:Brain-Derived Neurotrophic Factor / Q000378:metabolism*; D002454:Cell Differentiation; D002455:Cell Division; D017362:Cyclic AMP Response Element-Binding Protein / Q000378:metabolism*; D018891:Dentate Gyrus / Q000166:cytology / Q000378:metabolism*; D015671:Electroacupuncture / Q000379:methods / Q000662:veterinary*; D006624:Hippocampus / Q000378:metabolism*; D008297:Male; D018482:Muscle, Skeletal / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar
D019208:Brain-Derived Neurotrophic Factor; D017362:Cyclic AMP Response Element-Binding Protein