Effects of Eppikahangeto, a Kampo Formula, and Ephedrae herba Against Citric Acid-Induced Laryngeal Cough in Guinea Pigs
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- Minamizawa Kiyoshi
- Department of Japanese Oriental Medicine, Faculty of Medicine, University of Toyama, Japan
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- Goto Hirozo
- Department of Japanese Oriental Medicine, Faculty of Medicine, University of Toyama, Japan
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- Shimada Yutaka
- Department of Japanese Oriental Medicine, Faculty of Medicine, University of Toyama, Japan 21st Century COE Program, University of Toyama, Japan
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- Terasawa Katsutoshi
- 21st Century COE Program, University of Toyama, Japan Department of Japanese Oriental Medicine, Graduate School of Medicine, Chiba University, Japan
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- Haji Akira
- Laboratory of Neuropharmacology, School of Pharmacy, Aichi Gakuin University, Japan
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Abstract
To evaluate the efficacy of three common antitussive Kampo formulas, eppikahangeto (EPP), bakumondoto (BAK), and shoseiryutogomakyokansekito (SGM), a new cough model of guinea pig was used, which could specifically induce a laryngeal cough by microinjection of citric acid solution into the larynx. Kampo extract was dissolved in water and the animals were given access ad libitum for 3 days, and then the number of coughs during 10 min was counted. EPP extract decreased the number of coughs dose-dependently (0.3% extract, −22.9 ± 6.6%, P<0.01; 1.0% extract, −32.4 ± 5.5%, P<0.01). BAK extract and SGM extract had no significant effect. Intraperitoneal injection of codeine (60 mg/kg) also decreased the number of coughs (−36.1 ± 9.1%, P<0.05). Furthermore, Ephedrae herba (EH) extract reduced the number of coughs (−18.3 ± 6.0%, P<0.05), but the extract of EPP without EH did not. These results suggest that EPP has an antitussive effect against laryngeally-induced cough in guinea pigs, and the crucial herbal medicine is EH.<br>
Journal
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- Journal of Pharmacological Sciences
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Journal of Pharmacological Sciences 101 (2), 118-125, 2006
The Japanese Pharmacological Society
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Keywords
Details 詳細情報について
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- CRID
- 1390282680152893312
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- NII Article ID
- 10018237661
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- NII Book ID
- AA11806667
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- ISSN
- 13478648
- 13478613
- http://id.crossref.org/issn/13478613
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- NDL BIB ID
- 7963287
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed