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Yang N, Liang B, Srivastava K, Zeng J, Zhan J, Brown L, Sampson H, Goldfarb J, Emala C, Li XM. The Sophora flavescens flavonoid compound trifolirhizin inhibits acetylcholine induced airway smooth muscle contraction. Phytochemistry 2013; 95:259-267. [PMID: 23993294 PMCID: PMC4118489 DOI: 10.1016/j.phytochem.2013.07.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 01/31/2013] [Accepted: 07/23/2013] [Indexed: 05/23/2023]
Abstract
Asthma is a serious health problem worldwide, particularly in industrialized countries. Despite a better understanding of the pathophysiology of asthma, there are still considerable gaps in knowledge as well as a need for classes of drugs. ASHMI™ (Anti-asthma Herbal Medicine Intervention) is an aqueous extract of Ganoderma lucidum (Fr.) P. Karst (Ling Zhi), Sophora flavescens Aiton (Ku Shen) and Glycyrrhiza uralensis Fisch. ex DC (Gan Cao). It prevents allergic asthma airway hyper-reactivity in mice and inhibits acetylcholine (ACh) induced airway smooth muscle (ASM) contraction in tracheal rings from allergic asthmatic mice. The purpose of this research was to identify individual herb(s) and their active compound(s) that inhibit ASM contraction. It was found that S. flavescens, but not G. lucidum or G. uralensis aqueous extracts, inhibited ASM contraction in tracheal rings from asthmatic mice. Bioassay-guided isolation and identification of flavonoid fractions/compound(s) via methylene chloride extraction, preparative HPLC fractionation, and LC-MS and NMR spectroscopic analyses showed that trifolirhizin is an active constituent that inhibits acetylcholine mediated ASM contraction or directly relaxes pre-contracted ASM independent of β2-adrenoceptors.
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Affiliation(s)
- Nan Yang
- Department of Pediatrics, Center for Chinese Herbal Therapy for Asthma and Allergy, Jaffe Food Allergy Institute, 4105 Old Main Hill, Logan, UT 84322
| | - Banghao Liang
- Department of Pediatrics, Center for Chinese Herbal Therapy for Asthma and Allergy, Jaffe Food Allergy Institute, 4105 Old Main Hill, Logan, UT 84322
| | - Kamal Srivastava
- Department of Pediatrics, Center for Chinese Herbal Therapy for Asthma and Allergy, Jaffe Food Allergy Institute, 4105 Old Main Hill, Logan, UT 84322
| | - Jia Zeng
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322
| | - Jixun Zhan
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322
| | - LaVerne Brown
- Department of Pediatrics, Center for Chinese Herbal Therapy for Asthma and Allergy, Jaffe Food Allergy Institute, 4105 Old Main Hill, Logan, UT 84322
| | - Hugh Sampson
- Department of Pediatrics, Center for Chinese Herbal Therapy for Asthma and Allergy, Jaffe Food Allergy Institute, 4105 Old Main Hill, Logan, UT 84322
| | - Joseph Goldfarb
- Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029
| | - Charles Emala
- Department of Anesthesiology, Columbia University, New York, New York 10032
| | - Xiu-Min Li
- Department of Pediatrics, Center for Chinese Herbal Therapy for Asthma and Allergy, Jaffe Food Allergy Institute, 4105 Old Main Hill, Logan, UT 84322
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