PMID- 16442252 OWN - NLM STAT- MEDLINE DCOM- 20061129 LR - 20060529 IS - 0378-8741 (Print) IS - 0378-8741 (Linking) VI - 106 IP - 2 DP - 2006 Jun 30 TI - Effects of Liuwei Dihuang decoction on ion channels and synaptic transmission in cultured hippocampal neuron of rat. PG - 166-72 AB - The effect of Liuwei Dihuang decoction (LW), a traditional Chinese medicine (TCM) prescription, on voltage-dependent currents and synaptic transmission were investigated in cultured hippocampal neurons of rat by whole-cell patch clamp recording technique. After application with serum from LW-treated rats, termed LW-containing serum (LWCS) for 48 h, the amplitude of delay rectifying K+ current (IK) and voltage-gated Ca2+ current (ICa) decreased. While the frequency of spontaneous excitatory post-synaptic current (sEPSC) and miniature excitatory post-synaptic current (mEPSC) increased significantly. Yet the amplitude of voltage-depended Na+ current (INa) and transient outward K+ current (IA), membrane capacitance and resistance remained unchanged. The results indicated that LWCS possessed the effect of modulating or improving neuronal and synaptic function, which possibly contribute to the cognition enhancing effect of LW. FAU - Yang, Sheng AU - Yang S AD - Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China. FAU - Zhou, Wenxia AU - Zhou W FAU - Zhang, Yongxiang AU - Zhang Y FAU - Yan, Cunyu AU - Yan C FAU - Zhao, Yimin AU - Zhao Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060124 PL - Ireland TA - J Ethnopharmacol JT - Journal of ethnopharmacology JID - 7903310 RN - 0 (Calcium Channels) RN - 0 (Delayed Rectifier Potassium Channels) RN - 0 (Drugs, Chinese Herbal) RN - 0 (Ion Channels) RN - 0 (Liuwei Dihuang Decoction) RN - 0 (Sodium Channels) SB - IM MH - Administration, Oral MH - Animals MH - Calcium Channels/drug effects MH - Cells, Cultured MH - Delayed Rectifier Potassium Channels/drug effects MH - Drugs, Chinese Herbal/administration & dosage/*pharmacology MH - Electric Capacitance MH - Electric Impedance MH - Excitatory Postsynaptic Potentials/drug effects MH - Hippocampus/cytology/*drug effects/metabolism MH - Ion Channel Gating/drug effects MH - Ion Channels/*drug effects/metabolism MH - Male MH - Membrane Potentials/drug effects MH - Neurons/*drug effects/metabolism MH - Patch-Clamp Techniques MH - Rats MH - Rats, Wistar MH - Serum/metabolism MH - Sodium Channels/drug effects MH - Synaptic Transmission/*drug effects EDAT- 2006/01/31 09:00 MHDA- 2006/12/09 09:00 CRDT- 2006/01/31 09:00 PHST- 2004/11/01 00:00 [received] PHST- 2005/10/17 00:00 [revised] PHST- 2005/12/13 00:00 [accepted] PHST- 2006/01/31 09:00 [pubmed] PHST- 2006/12/09 09:00 [medline] PHST- 2006/01/31 09:00 [entrez] AID - S0378-8741(05)00836-6 [pii] AID - 10.1016/j.jep.2005.12.017 [doi] PST - ppublish SO - J Ethnopharmacol. 2006 Jun 30;106(2):166-72. doi: 10.1016/j.jep.2005.12.017. Epub 2006 Jan 24.