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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Luo, Jie Min, Su Wei, Ke Cao, Jun |
| Description | Country affiliation: China Author Affiliation: Luo J ( Department of Anesthesiology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China.) |
| Abstract | AIM OF THE STUDY: Ion channel mechanism of cardiac electrophysiological effects of Shenfu Decoction (SFD, Ginseng and Aconiti Praeparatae Decoction), a traditional Chinese medicine (TCM) prescription, and its ingredient bases were investigated in guinea pigs. MATERIALS AND METHODS: After administration of an injection made from SFD (Shenfu Injection, SFI), the indexes of transmembrane action potential (TAP) in vivo and sodium channels in isolated ventricular myocyte were assayed by suspended microelectrodes and patch clamp techniques respectively, and ingredients of SFD were compared with. RESULTS: After administration of SFI, the action potential amplitude (APA) and maximum velocity (V(max)) of TAP decreased. In the presence of either SFI or Fuzi active ingredient (FZAI)(5, 10, and 15%), not any other ingredient, the density of voltage-dependent sodium current (I(Na)) decreased significantly, while the inhibition ratio of SFI was larger. EC(50) of SFI was less than the one of FZAI, and SFI displayed effects on I(Na) in wider voltage scope than FZAI in current-voltage curve. Both SFI and FZAI shifted the steady-state inactivation curve of sodium channels to the left, and the recovery curve to the right. CONCLUSIONS: The results indicated that the cardiac electrophysiological effects of SFI were exerted by blocking sodium channels, and FZAI contributed to such effects most but inferior to SFI, which justified its use in anti-arrhythmia, myocardial protection, etc. |
| File Format | HTM / HTML |
| ISSN | 03788741 |
| Issue Number | 3 |
| Volume Number | 117 |
| e-ISSN | 18727573 |
| Journal | Journal of Ethnopharmacology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2008-05-22 |
| Publisher Place | Ireland |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Ethnopharmacology Drugs, Chinese Herbal Chemistry Pharmacology Heart Drug Effects Ion Channels Myocytes, Cardiac Aconitum Animals Cell Separation Dose-response Relationship, Drug Electrophysiology Guinea Pigs In Vitro Techniques Kinetics Membrane Potentials Panax Patch-clamp Techniques Plant Extracts Sodium Channels Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Drug Discovery Pharmacology |
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