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Wei N, Wang X, Wu Y, Liu L, Zhao Y, Zhao R. Comparative Study on Anti-Inflammatory Effect of Polysaccharides from Vinegar-Baked Radix Bupleuri Using Different Methods. ACS OMEGA 2023; 8:29253-29261. [PMID: 37599940 PMCID: PMC10433348 DOI: 10.1021/acsomega.3c02590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023]
Abstract
The impact of the extraction method on the physiochemical characteristics and anti-inflammatory effect of polysaccharides from vinegar-baked Radix Bupleuri (VBCPs) was studied. Five extraction methods were employed to obtain the VBCPs: hot water extraction (HW), ultrasound-assisted extraction (UA), enzyme-assisted extraction (EA), citric acid-assisted extraction (CA), and ammonia-assisted extraction (KA). The results showed that the extraction method affects the yield, characteristics, and anti-inflammatory effect of the polysaccharides significantly. KA produced the highest yield, Ara content, and the strongest effect of enhancing IL-10 secretion. VBCP-EA exhibited the largest molecular weight (Mw), the highest Man content, and the poorest effect on inhibiting NO, VBCP-UA possessed more Gal than other VBCPs, the lowest Mw, and a comparable effect on inhibiting NO and TNF-α with VBCP-KA and VBCP-CA. All VBCP self-assembled into nanoparticles in solutions, and VBCP-KA presented the lowest particle size. The structure-activity analysis showed that Mw and Man content are negatively correlated and Ara content is positively correlated with the NO inhibition and IL-10 secretion effects; Rha and Gal A content are positively correlated and Glu is negatively correlated with the TNF-α inhibiting effect. The above results indicated that KA is an efficient method for obtaining anti-inflammatory VBCP, which provides new insight into the extraction of VBCP.
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Affiliation(s)
- Ni Wei
- State
Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University
of Chinese Medicine, Guangzhou 510006, China
| | - Xiaoshuang Wang
- State
Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University
of Chinese Medicine, Guangzhou 510006, China
| | - Yayun Wu
- State
Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University
of Chinese Medicine, Guangzhou 510006, China
- Guangdong
Province Key Laboratory of Clinical Research on Traditional Chinese
Medicine Syndrome, Guangzhou 510006, China
| | - Lijuan Liu
- State
Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University
of Chinese Medicine, Guangzhou 510006, China
- Guangdong
Province Key Laboratory of Clinical Research on Traditional Chinese
Medicine Syndrome, Guangzhou 510006, China
| | - Ya Zhao
- State
Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University
of Chinese Medicine, Guangzhou 510006, China
- Guangdong
Province Key Laboratory of Clinical Research on Traditional Chinese
Medicine Syndrome, Guangzhou 510006, China
| | - Ruizhi Zhao
- State
Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University
of Chinese Medicine, Guangzhou 510006, China
- Guangdong
Province Key Laboratory of Clinical Research on Traditional Chinese
Medicine Syndrome, Guangzhou 510006, China
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Yu X, Miao Z, Zhang L, Zhu L, Sheng H. Extraction, purification, structure characteristics, biological activities and pharmaceutical application of Bupleuri Radix Polysaccharide: A review. Int J Biol Macromol 2023; 237:124146. [PMID: 36965565 DOI: 10.1016/j.ijbiomac.2023.124146] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/12/2023] [Accepted: 03/20/2023] [Indexed: 03/27/2023]
Abstract
Bupleuri Radix (BR), as a well-known plant medicine of relieving exterior syndrome, has a long history of usage in China. Bupleuri Radix Polysaccharide (BRP), as the main component and an important bioactive substance of BR, has a variety of pharmacological activities, including immunoregulation, antioxidant, antitumor, anti-diabetic and anti-aging, etc. In this review, the advancements on extraction, purification, structure characteristics, biological activities and pharmaceutical application of BRP from different sources (Bupleurum chinense DC., Bupleurum scorzonerifolium Willd., Bupleurum falcatum L. and Bupleurum smithii Woiff. var. Parvifolium Shan et Y. Li.) are summarized. Meanwhile, this review makes an in-depth discussion on the shortcomings of the research on BRP, and new valuable insights for the future researches of BRP are proposed.
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Affiliation(s)
- Xinyue Yu
- College of pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan 250355, China
| | - Zhuang Miao
- College of pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan 250355, China
| | - Lizhen Zhang
- College of pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan 250355, China
| | - Liqiao Zhu
- College of pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan 250355, China.
| | - Huagang Sheng
- College of pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan 250355, China.
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Cao P, Wu S, Wu T, Deng Y, Zhang Q, Wang K, Zhang Y. The important role of polysaccharides from a traditional Chinese medicine-Lung Cleansing and Detoxifying Decoction against the COVID-19 pandemic. Carbohydr Polym 2020; 240:116346. [PMID: 32475597 PMCID: PMC7175912 DOI: 10.1016/j.carbpol.2020.116346] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/11/2020] [Accepted: 04/17/2020] [Indexed: 01/04/2023]
Abstract
The new coronavirus pneumonia, named COVID-19 by the World Health Organization, has become a pandemic. It is highly pathogenic and reproduces quickly. There are currently no specific drugs to prevent the reproduction and spread of COVID-19. Some traditional Chinese medicines, especially the Lung Cleansing and Detoxifying Decoction (Qing Fei Pai Du Tang), have shown therapeutic effects on mild and ordinary COVID-19 patients. Polysaccharides are important ingredients in this decoction. This review summarizes the potential pharmacological activities of polysaccharides isolated by hot water extraction from Lung Cleansing and Detoxifying Decoction, which is consistent with its production method, to provide the theoretical basis for ongoing research on its application.
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Affiliation(s)
- Peng Cao
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022 China.
| | - Sanlan Wu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022 China
| | - Tingting Wu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022 China
| | - Yahui Deng
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022 China
| | - Qilin Zhang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022 China
| | - Kaiping Wang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yu Zhang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022 China.
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Li J, Li S, Zheng Y, Zhang H, Chen J, Yan L, Ding T, Linhardt RJ, Orfila C, Liu D, Ye X, Chen S. Fast preparation of rhamnogalacturonan I enriched low molecular weight pectic polysaccharide by ultrasonically accelerated metal-free Fenton reaction. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.05.025] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Yin HM, Wang SN, Nie SP, Xie MY. Coix polysaccharides: Gut microbiota regulation and immunomodulatory. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.bcdf.2018.04.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Xie JH, Jin ML, Morris GA, Zha XQ, Chen HQ, Yi Y, Li JE, Wang ZJ, Gao J, Nie SP, Shang P, Xie MY. Advances on Bioactive Polysaccharides from Medicinal Plants. Crit Rev Food Sci Nutr 2017; 56 Suppl 1:S60-84. [PMID: 26463231 DOI: 10.1080/10408398.2015.1069255] [Citation(s) in RCA: 322] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In recent decades, the polysaccharides from the medicinal plants have attracted a lot of attention due to their significant bioactivities, such as anti-tumor activity, antioxidant activity, anticoagulant activity, antidiabetic activity, radioprotection effect, anti-viral activity, hypolipidemic and immunomodulatory activities, which make them suitable for medicinal applications. Previous studies have also shown that medicinal plant polysaccharides are non-toxic and show no side effects. Based on these encouraging observations, most researches have been focusing on the isolation and identification of polysaccharides, as well as their bioactivities. A large number of bioactive polysaccharides with different structural features and biological effects from medicinal plants have been purified and characterized. This review provides a comprehensive summary of the most recent developments in physiochemical, structural features and biological activities of bioactive polysaccharides from a number of important medicinal plants, such as polysaccharides from Astragalus membranaceus, Dendrobium plants, Bupleurum, Cactus fruits, Acanthopanax senticosus, Angelica sinensis (Oliv.) Diels, Aloe barbadensis Miller, and Dimocarpus longan Lour. Moreover, the paper has also been focused on the applications of bioactive polysaccharides for medicinal applications. Recent studies have provided evidence that polysaccharides from medicinal plants can play a vital role in bioactivities. The contents and data will serve as a useful reference material for further investigation, production, and application of these polysaccharides in functional foods and therapeutic agents.
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Affiliation(s)
- Jian-Hua Xie
- a State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang , P.R. China
| | - Ming-Liang Jin
- b Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University , Xi'an , P.R. China
| | - Gordon A Morris
- c Department of Chemical Sciences , School of Applied Sciences, University of Huddersfield , Huddersfield , UK
| | - Xue-Qiang Zha
- d School of Biotechnology and Food Engineering, Hefei University of Technology , Hefei , P.R. China
| | - Han-Qing Chen
- d School of Biotechnology and Food Engineering, Hefei University of Technology , Hefei , P.R. China
| | - Yang Yi
- e College of Food Science and Engineering, Wuhan Polytechnic University , Wuhan , P.R. China
| | - Jing-En Li
- a State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang , P.R. China.,f College of Food Science and Engineering, Jiangxi Agricultural University , Nanchang , P.R. China
| | - Zhi-Jun Wang
- a State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang , P.R. China
| | - Jie Gao
- d School of Biotechnology and Food Engineering, Hefei University of Technology , Hefei , P.R. China
| | - Shao-Ping Nie
- a State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang , P.R. China
| | - Peng Shang
- b Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University , Xi'an , P.R. China
| | - Ming-Yong Xie
- a State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang , P.R. China
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Burana-osot J, Soonthornchareonnon N, Hosoyama S, Linhardt RJ, Toida T. Partial depolymerization of pectin by a photochemical reaction. Carbohydr Res 2010; 345:1205-10. [PMID: 20451177 DOI: 10.1016/j.carres.2010.04.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 04/06/2010] [Accepted: 04/08/2010] [Indexed: 10/19/2022]
Abstract
Complex heterogeneous polysaccharides that comprise pectin were partially depolymerized by a photochemical reaction using ultraviolet light in the presence of titanium dioxide catalyst. In a period of 6h at pH 7, this UV/TiO(2) process decreased the average molecular weight of pectin from 400kDa to 200kDa. The characterization of the partially depolymerized pectin, which was fractionated by size-exclusion chromatography, was performed by (1)H NMR spectroscopy, and the spectra obtained showed that the resulting oligosaccharides and polysaccharides maintained the intact core structure of pectin. The monosaccharide content and depolymerization profile were determined by high-performance anion-exchange chromatography coupled with pulsed amperometric detection. This controlled photochemical depolymerization technique might be useful for preparation of pectin oligosaccharides as an ingredient in food and pharmaceutical products.
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Affiliation(s)
- Jankana Burana-osot
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Silpakorn University, Nakorn-pathom, Thailand
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Ovodov YS. Current views on pectin substances. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2009; 35:293-310. [DOI: 10.1134/s1068162009030017] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Matsumoto T, Hosono-Nishiyama K, Yamada H. A pectic polysaccharide isolated from the roots of Bupleurum falcatum L. stimulates the tyrosine phosphorylation of lipid rafts of murine B cells. Biol Pharm Bull 2008; 31:931-4. [PMID: 18451521 DOI: 10.1248/bpb.31.931] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bupleuran 2IIc, a pectic polysaccharide isolated from the roots of Bupleurum falcatum L., was previously characterized as a T cell-independent B cell mitogen. The endo-(1-->4)-alpha-D-polygalacturonase-resistant moiety of bupleuran 2IIc (bupleuran 2IIc/PG-1) was the active site for expression of the activity, and expression of the cyclin D2 gene by bupleuran 2IIc/PG-1 may be mediated via activation of Src family tyrosine kinase, phosphatidylinositol 3-kinase (PI 3-K) and phospholipase C (PLC)-gamma followed by activation of protein kinase C (PKC) and calcium mobilization (Matsumoto et al., Int. Immunopharmacol., 5, 1373-1386 (2005)). Plasma membrane microdomains (lipid rafts) are enriched in signaling molecules and suggested to be involved in numerous cell functions, including membrane traffic and signaling. When B cells were stimulated with bupleuran 2IIc/PG-1, clustering of membrane lipid rafts was observed. To consider whether lipid rafts are implicated in bupleuran 2IIc/PG-1-mediated B cell proliferation, we analyzed the phosphorylation of tyrosine residues of proteins in lipid rafts. When murine B cells were stimulated with bupleuran 2IIc/PG-1, tyrosine phosphorylation of proteins in lipid rafts fraction was observed within 5 min. Tyrosine phosphorylation in lipid rafts fraction by bupleuran 2IIc/PG-1 was inhibited by the Src-family tyrosine kinase inhibitor, PP2. Together with previously published data, the results presented in this study suggest that activation of signaling molecules in lipid rafts by stimulation of bupleuran 2IIc/PG-1 contributes to B cell proliferation as the membrane-proximal signaling event.
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Affiliation(s)
- Tsukasa Matsumoto
- The Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, Minatoku, Tokyo 108-8641, Japan
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Matsumoto T, Hosono-Nishiyama K, Guo YJ, Ikejima T, Yamada H. A possible signal transduction pathway for cyclin D2 expression by a pectic polysaccharide from the roots of Bupleurum falcatum L. in murine B cell. Int Immunopharmacol 2005; 5:1373-86. [PMID: 15953564 DOI: 10.1016/j.intimp.2005.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2005] [Revised: 02/21/2005] [Accepted: 03/10/2005] [Indexed: 10/25/2022]
Abstract
Bupleuran 2IIc, a pectic polysaccharide isolated from the roots of bupleurum falcatum L., was previously characterized as a T-cell-independent B cell mitogen. This study focuses on elucidating the mechanism by which bupleuran 2IIc induces cyclin D2 production for inducing mitogenesis in murine B cells. Bupleuran 2IIc was digested with endo-alpha-(1-->4)-D-polygalacturonase and the resulting bupleuran 2IIc/PG-1 ("ramified" region) strongly stimulated cyclin D2 expression. When murine B cells were stimulated with bupleuran 2IIc/PG-1, phosphorylation of tyrosine residues of a number of proteins was observed. Cyclin D2 expression by bupleuran 2IIc/PG-1 was inhibited by the tyrosine kinase inhibitors, genistein and herbimycin A, and the Src family tyrosine kinase inhibitor, PP2, suggesting a possible role for tyrosine kinases. The stimulation by bupleuran 2IIc/PG-1 of cyclin D2 expression was significantly decreased by inhibitors, PI 3-kinase (LY294002 and Wortmannin), PLCgamma (U73122), PKC (H-7), receptor-operated calcium entry inhibitor (SK&F 96365), and calcineurin (FK506). Both PD98059 and U0126, highly selective inhibitors of MEK1 and MEK1/2, respectively, did not strongly suppress the expression of cyclin D2 after stimulation by bupleuran 2IIc/PG-1. The results suggest that (1) bupleuran 2IIc/PG-1 is the active site for induction of cyclin D2 by bupleuran 2IIc, (2) the expression of the cyclin D2 gene by bupleuran 2IIc/PG-1 may be mediated via the activation of PI 3-kinase and PLCgamma followed by activation of PKC and calcium mobilization, and (3) the ERK1/2 cascade is not a central signaling pathway for bupleuran 2IIc/PG-1-induced cyclin D2 expression.
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Affiliation(s)
- Tsukasa Matsumoto
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato, Tokyo 108-8641, Japan
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Ohtake N, Nakai Y, Yamamoto M, Sakakibara I, Takeda S, Amagaya S, Aburada M. Separation and isolation methods for analysis of the active principles of Sho-saiko-to (SST) oriental medicine. J Chromatogr B Analyt Technol Biomed Life Sci 2005. [PMID: 15556493 DOI: 10.1016/s1570-0232(04)00547-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Sho-saiko-to (SST) was introduced into Japan as an oriental classical medicine from China approximately 1500 years ago, and it is currently the most representative Kampo medicine (traditional Japanese medicine). SST is manufactured in Japan as an ethical drug on a modern industrial scale in which the quality of ingredients is standardized with Good Manufacturing Practices (GMP) regulation. SST is widely used for the treatment of chronic hepatitis. Experimental and clinical studies including multi-center, placebo-controlled, double-blind studies have demonstrated the various pharmacological effects of SST. SST is prepared from the hot water extraction of seven raw materials, therefore many kinds of constituents are included. Three-dimensional (3D) HPLC analysis is useful for obtaining many kinds of constituents, especially low molecular ultraviolet (UV) quenching compounds, contained in SST as well as its fractions. Fingerprint pattern provided by 3D HPLC analysis makes possible to identify the overall-viewing of SST. Databases of UV spectra of the components of medicinal herbs obtained by reversed-phase (RP) HPLC using a photodiode array (PDA) and fingerprint patterns of crude drugs made by 3D HPLC analysis facilitate the identification, analysis and quality of herbal drugs. Studies using both PDA HPLC and an amino acid analysis with a fluorometric detector have found that SST contains fifteen major low molecular compounds (i.e. baicalin, wogonin-7-O-glucuronide, liquiritin, their three aglycons, liquiritin apioside, glycyrrhizin, saikosaponin b1, saikosaponin b2, ginsenoside Rg1, ginsenoside Rb1, (6)-gingerol, (6)-shogaol and arginine). These compounds have various pharmacological actions, and are assumed to be responsible, at least partly, for the pharmacological effects of SST. Although there have only been a few investigations on high molecular compounds with pharmacological actions contained in SST, several kinds of polysaccharides have been isolated from constituent herbs of SST. This review paper summarizes analytical methods of separation, isolation and identification of compounds with biological activities from SST, which is a mixture drug of medicinal herbs. Accordingly, this paper would not focus on methods of separation, isolation and analysis of particular compounds from each constituent herb of SST.
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Affiliation(s)
- Nobuhiro Ohtake
- Medicinal Evaluation Laboratories, Tsumura Research Institute, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan.
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Ohtake N, Nakai Y, Yamamoto M, Sakakibara I, Takeda S, Amagaya S, Aburada M. Separation and isolation methods for analysis of the active principles of Sho-saiko-to (SST) oriental medicine. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 812:135-48. [PMID: 15556493 PMCID: PMC7105231 DOI: 10.1016/j.jchromb.2004.06.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2004] [Accepted: 06/29/2004] [Indexed: 12/16/2022]
Abstract
Sho-saiko-to (SST) was introduced into Japan as an oriental classical medicine from China approximately 1500 years ago, and it is currently the most representative Kampo medicine (traditional Japanese medicine). SST is manufactured in Japan as an ethical drug on a modern industrial scale in which the quality of ingredients is standardized with Good Manufacturing Practices (GMP) regulation. SST is widely used for the treatment of chronic hepatitis. Experimental and clinical studies including multi-center, placebo-controlled, double-blind studies have demonstrated the various pharmacological effects of SST. SST is prepared from the hot water extraction of seven raw materials, therefore many kinds of constituents are included. Three-dimensional (3D) HPLC analysis is useful for obtaining many kinds of constituents, especially low molecular ultraviolet (UV) quenching compounds, contained in SST as well as its fractions. Fingerprint pattern provided by 3D HPLC analysis makes possible to identify the overall-viewing of SST. Databases of UV spectra of the components of medicinal herbs obtained by reversed-phase (RP) HPLC using a photodiode array (PDA) and fingerprint patterns of crude drugs made by 3D HPLC analysis facilitate the identification, analysis and quality of herbal drugs. Studies using both PDA HPLC and an amino acid analysis with a fluorometric detector have found that SST contains fifteen major low molecular compounds (i.e. baicalin, wogonin-7-O-glucuronide, liquiritin, their three aglycons, liquiritin apioside, glycyrrhizin, saikosaponin b1, saikosaponin b2, ginsenoside Rg1, ginsenoside Rb1, (6)-gingerol, (6)-shogaol and arginine). These compounds have various pharmacological actions, and are assumed to be responsible, at least partly, for the pharmacological effects of SST. Although there have only been a few investigations on high molecular compounds with pharmacological actions contained in SST, several kinds of polysaccharides have been isolated from constituent herbs of SST. This review paper summarizes analytical methods of separation, isolation and identification of compounds with biological activities from SST, which is a mixture drug of medicinal herbs. Accordingly, this paper would not focus on methods of separation, isolation and analysis of particular compounds from each constituent herb of SST.
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Affiliation(s)
- Nobuhiro Ohtake
- Medicinal Evaluation Laboratories, Tsumura Research Institute, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan.
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