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Advances in the Bioactivities of Phytochemical Saponins in the Prevention and Treatment of Atherosclerosis. Nutrients 2022; 14:nu14234998. [PMID: 36501028 PMCID: PMC9735883 DOI: 10.3390/nu14234998] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
Atherosclerosis (AS) is a chronic inflammatory disease characterized by hardening and narrowing of arteries. AS leads to a number of arteriosclerotic vascular diseases including cardiovascular diseases, cerebrovascular disease and peripheral artery disease, which pose a big threat to human health. Phytochemicals are a variety of intermediate or terminal low molecular weight secondary metabolites produced during plant energy metabolism. Phytochemicals from plant foods (vegetables, fruits, whole grains) and traditional herb plants have been shown to exhibit multiple bioactivities which are beneficial for prevention and treatment against AS. Many types of phytochemicals including polyphenols, saponins, carotenoids, terpenoids, organic sulfur compounds, phytoestrogens, phytic acids and plant sterols have already been identified, among which saponins are a family of glycosidic compounds consisting of a hydrophobic aglycone (sapogenin) linked to hydrophilic sugar moieties. In recent years, studies have shown that saponins exhibit a number of biological activities such as anti-inflammation, anti-oxidation, cholesterol-lowering, immunomodulation, anti-platelet aggregation, etc., which are helpful in the prevention and treatment of AS. This review aims to summarize the recent advances in the anti-atherosclerotic bioactivities of saponins such as ginsenoside, soyasaponin, astra-galoside, glycyrrhizin, gypenoside, dioscin, saikosaponin, etc.
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Kwon CY, Suh HW, Kim JW, Chung SY. Anti-anger Effects of Herbal Medicine: A Mini-Review of Rat Studies. Chin J Integr Med 2022; 28:263-271. [PMID: 35084699 DOI: 10.1007/s11655-022-3506-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To analyze the available data on the anti-anger effects of herbal medicines (HMs) as well as their underlying mechanisms in rat models. METHODS From 6 electronic databases [PubMed, EMBASE, China National Knowledge Infrastructure (CNKI), Wanfang, Oriental Medicine Advanced Searching Integrated System (OASIS), and Research Information Sharing Service (RISS)], relevant animal experiments were searched by using "anger," "rats," and "animal" as search keywords. The last search was conducted on November 22, 2019, and all experiments involving rat models of anger and treatment using HMs published until the date of the search were considered. RESULTS A total of 24 studies with 16 kinds of HMs were included. Most studies have used the "tail irritating method" and "social isolation and resident intruder" method to establish anger models. According to the included studies, the therapeutic mechanisms of HMs for anger regulation and important herbs by their frequency and/or preclinical evidence mainly incladed regulation of hemorheology (Bupleuri Radix, Paeoniae Radix Alba, and Glycyrrhizae Radix), regulation of sex hormones (Bupleuri Radix, Cyperi Rhizoma, and Paeoniae Radix Alba), regulation of neurotransmitters (Cyperi Rhizoma), regulation of anger-related genes (Bupleuri Radix, Glycyrrhizae Radix, and Paeoniae Radix Alba), and other effects. Overall, Liver (Gan) qi-smoothing herbs including Bupleuri Radix and Cyperi Rhizoma were the most frequently used. CONCLUSIONS This review found the frequent methods to establish an anger model, and major mechanisms of anti-anger effects of HMs. Interestingly, some Liver qi-smoothing herbs have been frequently used to investigate the anti-anger effects of HM. These findings provide insight into the role and relevance of HMs in the field of anger management.
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Affiliation(s)
- Chan-Young Kwon
- Department of Oriental Neuropsychiatry, Dong-eui University College of Korean Medicine, Busan, 47227, Republic of Korea
| | - Hyo-Weon Suh
- Department of Neuropsychiatry, Kyung Hee University Korean Medicine Hospital at Gangdong, 892 Dongnam-ro, Gangdonggu, Seoul, 05278, Republic of Korea
| | - Jong Woo Kim
- Department of Neuropsychiatry, Kyung Hee University Korean Medicine Hospital at Gangdong, 892 Dongnam-ro, Gangdonggu, Seoul, 05278, Republic of Korea
| | - Sun-Yong Chung
- Department of Neuropsychiatry, Kyung Hee University Korean Medicine Hospital at Gangdong, 892 Dongnam-ro, Gangdonggu, Seoul, 05278, Republic of Korea.
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Lim JW, Chee SX, Wong WJ, He QL, Lau TC. Traditional Chinese medicine: herb-drug interactions with aspirin. Singapore Med J 2018; 59:230-239. [PMID: 29796686 DOI: 10.11622/smedj.2018051] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Traditional Chinese medicine (TCM)-based herbal therapies have gained increasing popularity worldwide, raising concerns of its efficacy, safety profile and potential interactions with Western medications. Antithrombotic agents are among the most common prescription drugs involved in herb-drug interactions, and this article focused on aspirin, one of the most widely used antiplatelet agents worldwide. We discussed herbs that have potential interactions by exploring Western and TCM approaches to thrombotic events. Common TCM indications for these herbs were also highlighted, including possible scenarios of their concurrent usage with aspirin. With greater awareness and understanding of potential herb-drug interactions, TCM and Western physicians may collaborate more closely to identify, treat and, most importantly, prevent adverse drug events.
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Affiliation(s)
- Jia Wei Lim
- University Medicine Cluster, National University Health System, Singapore
| | | | - Wen Jun Wong
- Eu Yan Sang Integrative Health Pte Ltd, Singapore
| | - Qiu Ling He
- Eu Yan Sang Integrative Health Pte Ltd, Singapore
| | - Tang Ching Lau
- University Medicine Cluster, National University Health System, Singapore.,Division of Rheumatology, University Medicine Cluster, National University Health System, Singapore
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The Role of Saikosaponins in Therapeutic Strategies for Age-Related Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:8275256. [PMID: 29849917 PMCID: PMC5924972 DOI: 10.1155/2018/8275256] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 03/25/2018] [Indexed: 12/19/2022]
Abstract
As life expectancy increases, elderly populations tend to spend an increasing number of years in poor health, with chronic age-related diseases and disability. Therefore, the development of therapeutic strategies to treat or prevent multiple pathophysiological conditions in the elderly may improve health-adjusted life expectancy and alleviate the potential economic and social burdens arising from age-related diseases. Bioactive natural products might represent promising new drug candidates for the treatment of many chronic age-related diseases, including cancer, Alzheimer's disease, cardiovascular disease, obesity, and liver disease. Here, we discuss a therapeutic option using saikosaponins, which are triterpene saponins isolated from Bupleurum, against a variety of age-related diseases. Understanding the underlying mechanisms of natural products like saikosaponins in the treatment of age-related diseases may help in the development of diverse natural product-derived compounds that may be effective against a number of chronic health problems.
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Ouyang M, Liu Y, Tan W, Xiao Y, Yu K, Sun X, Huang Y, Cheng J, Luo R, Zhao X. Bu-zhong-yi-qi pill alleviate the chemotherapy-related fatigue in 4 T1 murine breast cancer model. Altern Ther Health Med 2014; 14:497. [PMID: 25511260 PMCID: PMC4300826 DOI: 10.1186/1472-6882-14-497] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 12/10/2014] [Indexed: 11/21/2022]
Abstract
Background Paclitaxel induced fatigue still remains underrecognized and undertreated, partly because of limited understanding of its pathophysiology and lack of effective treatments. This study is aim to evaluate the anti-fatigue effects and mechanism of Bu-Zhong-Yi-Qi pill in murine 4 T1 breast cancer mice were treated with paclitaxel. Methods Breast cancer mice established with murine 4 T1 cells were randomly and repectively divided into five groups: negative control group (NC), tumor control group (TC), paclitaxel group (PTX), Bu-Zhong-Yi-Qi pill group (BZYQ) and Bu-Zhong-Yi-Qi pill plus paclitaxel group (BZYQ + PTX). The mice were administered for 21 days. During this period, the tumor volume, body weight and the weight-loaded swimming time were measured. After the last administration, all mice were sacrificed, weighted the tumor, measured immune cell cytokines and oxidative stress indicator. The remaining 10 mice in each group were observed for survival analysis. Results Treatments with BZYQ + PTX and PTX significantly reduced the rates of tumor volume in comparison with TC starting on the 9th day and the 18th day respectively (P < 0.05-0.01), and presented decreased tumor weight compared to TC (P < 0.05-0.01). Compared with mice in TC group, the median survival time and the average survival time in BZYQ + PTX group, BZYQ group and PTX group were significantly prolonged (P < 0.05-0.01). The swimming time of the BZYQ + PTX group gradually increased, which is longer than the PTX group on Day 14 and Day 21 (P < 0.01). The level of TNF-α was lower in BZYQ + PTX group than PTX group (P < 0.01). The level of SOD activity in BZYQ + PTX group was lower than the NC group (P <0.01), but much higher than the PTX group (P < 0.01). The level of MDA of BZYQ + PTX group was higher than the NC group (P < 0.01), but significant lower than the PTX group (P < 0.01). Conclusions BZYQ has the potential of alleviating paclitaxel chemotherapy-related fatigue in 4 T1 breast cancer mice by reducing the serum levels of TNF-α and modulating the level of MDA and the SOD activity.
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Atanassov A, Tchorbanov B. Synthetic and Natural Peptides as Antithrombotic Agents—A View on the Current Development. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2009.10817623] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Kim KH, Gam CO, Choi SH, Ku SK. Mouse single oral dose toxicity test of bupleuri radix aqueous extracts. Toxicol Res 2013; 28:11-8. [PMID: 24278584 PMCID: PMC3834400 DOI: 10.5487/tr.2012.28.1.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 02/24/2012] [Accepted: 03/21/2012] [Indexed: 12/02/2022] Open
Abstract
The aim of this study was to evaluate the single oral dose toxicity of Bupleuri Radix (BR) aqueous extracts, it has been traditionally used as anti-inflammatory agent, in male and female mice. BR extracts (yield = 16.52%) was administered to female and male ICR mice as an oral dose of 2,000, 1,000 and 500 mg/kg (body weight) according to the recommendation of Korea Food and Drug Administration (KFDA) Guidelines. Animals were monitored for the mortality and changes in body weight, clinical signs and gross observation during 14 days after dosing, upon necropsy; organ weight and histopathology of 14 principal organs were examined. As the results, no BR extracts treatment related mortalities, clinical signs, changes on the body and organ weights, gross and histopathological observations against 14 principal organs were detected up to 2,000 mg/kg in both female and male mice, except for soft feces and related body weight decrease detected in male mice treated with 2,000 mg/kg. Therefore, LD50 (50% lethal dose) and approximate LD of BR aqueous extracts after single oral treatment in female and male mice were considered over 2000 mg/kg, respectively. Although it was also observed that the possibilities of digestive disorders, like soft feces when administered over 2,000 mg/kg of BR extracts in the present study, these possibilities of digestive disorders can be disregard in clinical use because they are transient in the highest dosages male only.
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Affiliation(s)
- Kyung-Hu Kim
- College of Oriental Medicine, Daegu Haany University, Gyeongsan 712-715, Korea
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Antioxidant and Protective Effects of Bupleurum falcatum on the L-Thyroxine-Induced Hyperthyroidism in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:578497. [PMID: 22888365 PMCID: PMC3410357 DOI: 10.1155/2012/578497] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Accepted: 06/03/2012] [Indexed: 11/28/2022]
Abstract
Bupleuri Radix (BR), the dried roots of Bupleurum falcatum L., has been used in folk medicine as an antiinflammatory and antioxidative agent. The aqueous extract of BR was evaluated for its possible ameliorative effect in the regulation of hyperthyroidism in l-thyroxine- (LT4-) induced rat model. After oral administration of 300, 150, and 75 mg/kg of BR extracts, once a day for 15 days from 12th LT4 treatments, changes on the body, thyroid gland, liver, and epididymal fat pad weights, serum triiodothyronine, thyroxine, thyroid-stimulating hormone, asparte aminotransferase and alanine aminotransferase concentrations, hepatic lipid peroxidation, glutathione contents, superoxide dismutase, and catalase activities were investigated with thyroid gland, liver, and epididymal fat histopathological changes. The effects of BR extracts were compared with that of propylthiouracil, a standard antithyroid drug 10 mg/kg (intraperitoneally). In this experiment, BR extracts dose dependently reversed LT4-induced hyperthyroidisms, and these effects indicating their potential in the regulation of hyperthyroidism. Further, the BR extract normalized LT4-induced liver oxidative stresses, and also reduced liver and epididymal fat pad changes. BR extracts 150 mg/kg showed comparable effects on the LT4-induced rat hyperthyroidism as compared with PTU 10 mg/kg. These effects of BR may help the improvement of hyperthyroidisms and accompanied various organ damages.
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Kwon HJ, Sim HJ, Lee SI, Lee YM, Lee JH, Park YD, Hong SP. Analysis of saikosaponins in Bupleuri Radix and Caihu-shugan-san using reversed-phase HPLC with pulsed amperometric detection. J Sep Sci 2011; 34:651-8. [DOI: 10.1002/jssc.201000784] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Revised: 12/16/2010] [Accepted: 12/16/2010] [Indexed: 11/10/2022]
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10
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Kim YS, Cho JH, Park S, Han JY, Back K, Choi YE. Gene regulation patterns in triterpene biosynthetic pathway driven by overexpression of squalene synthase and methyl jasmonate elicitation in Bupleurum falcatum. PLANTA 2011; 233:343-355. [PMID: 21053012 DOI: 10.1007/s00425-010-1292-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Accepted: 10/04/2010] [Indexed: 05/30/2023]
Abstract
The root of Bupleurum falcatum L. (Apiaceae) has long been one of the most important traditional herbal medicines in Asian countries. A group of triterpene saponins (saikosaponins) are the major constituents of this plant. Squalene synthase (SS) may play a regulatory role in directing triterpene intermediates and sterol pathways. Here, we investigated the regulatory role of the squalene synthase (BfSS1) gene in the biosynthesis of phytosterol and triterpene in B. falcatum. BfSS1 mRNA accumulated ubiquitously in plant organs and markedly increased in roots after treatment with methyl jasmonate (MeJA), ABA and ethephon. Transgenic B. falcatum constructs overexpressing BfSS1 in the sense and antisense orientations were assembled using the Agrobacterium-mediated method. Transgenic roots overexpressing BfSS1 in the sense orientation resulted in enhanced production of both phytosterol and saikosaponins. Overexpression of the BfSS1 gene in the sense orientation increased the mRNA accumulation of downstream genes such as squalene epoxidase and cycloartenol synthase but unexpectedly decreased the mRNA levels of β-amyrin synthase (β-AS), a triterpene synthase mRNA. MeJA treatment of wild-type roots strongly stimulated β-AS mRNA accumulation and saikosaponin production but suppressed phytosterol production. MeJA treatment of transgenic roots overexpressing BfSS1 in the sense orientation failed to stimulate β-AS mRNA accumulation but still enhanced saikosaponin and phytosterol production. These results indicate that overexpression of BfSS1 in B. falcatum regulates more powerfully the downstream genes than elicitor (MeJA) treatment in triterpene and phytosterol biosynthesis.
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Affiliation(s)
- Young Soon Kim
- Bioenergy Research Institute, Interdisciplinary Program for Bioenergy and Biomaterials of Graduate School, Chonnam National University, 300 Yongbong-dong, Gwangju 500-757, Korea
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Wu GC, Wu H, Fan LY, Pan HF. Saikosaponins: a potential treatment option for systemic lupus erythematosus. Ir J Med Sci 2010; 180:259-61. [PMID: 21110136 DOI: 10.1007/s11845-010-0646-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Accepted: 11/14/2010] [Indexed: 12/15/2022]
Abstract
While the exact cause of systemic lupus erythematosus (SLE) is still unknown, modern medicine has a number of effective treatments for this complex disorder. Corticosteroid hormones help reduce inflammation, antimalarial treatments address flare-ups and immunosuppressive medications work to keep the immune system in check. All these therapies are well tolerated, but accompany an increased risk of infection and nephrotoxicity. Recently, several studies showed that a number of natural and herbal products may also help some SLE patients deal with the debilitating symptoms. In this brief report, we proposed a traditional Chinese medicinal herb--Saikosaponins, and discussed its potential as a treatment option for SLE.
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Affiliation(s)
- G-C Wu
- Department of Pharmacology, The First People's Hospital, Lakeshore New District, Hefei, 230001, Anhui, People's Republic of China
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Kim SY, Yun-Choi HS. Platelet anti-aggregating activities of bupleurumin from the aerial parts of Bupleurum falcatum. Arch Pharm Res 2007; 30:561-4. [PMID: 17615674 DOI: 10.1007/bf02977649] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
An aryltetralin lactone, (-)-(1S,2R,3R)-1-(3',4'-methylenedioxyphenyl)-3-(hydroxymethyl)-6,7-dimethoxy-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid lactone, was isolated from the methanol extract of the aerial parts of Bupleurum falcatum and named bupleurumin. The structure of the compound was determined on the basis of chemical and spectroscopic methods, including two-dimensional NMR spectrometry (e.g., 1H- and 13C-NMR, homo- and heteronuclear COSY, HMBC). Bupleurumin showed an 8-fold potent inhibitory effect (IC50: 47.5 uM) compared to that of acetylsalicylic acid (ASA, IC50 : 420 uM) on collagen induced platelet aggregation and comparable effects as ASA on arachidonic acid-induced platelet aggregation.
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Affiliation(s)
- Sun Young Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 110-460, Korea
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Persson IAL, Josefsson M, Persson K, Andersson RGG. Tea flavanols inhibit angiotensin-converting enzyme activity and increase nitric oxide production in human endothelial cells. J Pharm Pharmacol 2006; 58:1139-44. [PMID: 16872562 DOI: 10.1211/jpp.58.8.0016] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A diversity of pharmacological effects on the cardiovascular system have been reported for Camellia sinensis: antioxidative, antiproliferative and anti-angiogenic activity, and nitric oxide synthase activation. The purpose of this study was to investigate if the connection between tea and angiotensin-converting enzyme (ACE) and nitric oxide (NO) might be an explanation of the pharmacological effects of tea on the cardiovascular system. Cultured endothelial cells from human umbilical veins (HUVEC) were incubated with extracts of Japanese Sencha (green tea), Indian Assam Broken Orange Pekoe (black tea) and Rooibos tea, respectively. The main flavanols and purine alkaloids in green and black tea were examined for their effects on ACE and NO. After incubation with green tea, black tea and Rooibos tea for 10 min, a significant and dose-dependent inhibition of ACE activity in HUVEC was seen with the green tea and the black tea. No significant effect on ACE was seen with the Rooibos tea. After 10-min incubation with (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechingallate and (-)-epigallocatechingallate, a dose-dependent inhibition of ACE activity in HUVEC was seen for all four tea catechins. After 24-h incubation, a significantly increased dose-dependent effect on NO production in HUVEC was seen for the green tea, the black tea and the Rooibos tea. After 24-h incubation with (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechingallate and (-)-epigallocatechingallate, a dose-dependent increased NO production in HUVEC was seen. In conclusion, tea extracts from C. sinensis may have the potential to prevent and protect against cardiovascular disease.
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Affiliation(s)
- Ingrid A-L Persson
- Department of Medicine and Care, Division of Pharmacology, Faculty of Health Sciences, Linköping University, Sweden.
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Wang YL, He SX, Luo JY. Progress in research on antitumor activity of saikosaponin and its mechanism. ACTA ACUST UNITED AC 2006; 4:98-100. [PMID: 16409986 DOI: 10.3736/jcim20060129] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yan-Li Wang
- Department of Gastroenterology, First Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710061, China
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Leung CY, Liu L, Wong RNS, Zeng YY, Li M, Zhou H. Saikosaponin-d inhibits T cell activation through the modulation of PKCtheta, JNK, and NF-kappaB transcription factor. Biochem Biophys Res Commun 2005; 338:1920-7. [PMID: 16289105 DOI: 10.1016/j.bbrc.2005.10.175] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2005] [Accepted: 10/24/2005] [Indexed: 11/19/2022]
Abstract
The effects of saikosaponin-d, a triterpene saponin derived from Bupleurum falcatum L. (Umbelliferae), on the signaling pathways of T cell activation were examined. The results showed that saikosaponin-d potently suppressed both early (CD69) and late (CD71) expressions of mouse T cells stimulated with Con A or PMA. It interfered with PKCtheta translocation from cytosol to membrane fraction and inhibited the phosphorylations of IkappaBalpha and JNK, but not ERK, in PMA-activated mouse T cells. Additionally, it inhibited PMA and ionomycin-stimulated IL-2 production in mouse T cells. In summary, these results indicate that the mechanism by which saikosaponin-d inhibits T cell activation would involve the suppression of CD69 and CD71 expressions and IL-2 production, and the modulation of PKC pathway through PKCtheta, JNK, and NF-kappaB transcription factor. This may herald a novel approach for further studies of saikosaponin-d as a candidate for use in the treatment of inflammatory and autoimmune diseases.
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Affiliation(s)
- Chung Yee Leung
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong
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16
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Bioactive components of Bupleurum rigidum L. Subsp. Rigidum. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1572-5995(02)80045-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Liao S, Kao YH, Hiipakka RA. Green tea: biochemical and biological basis for health benefits. VITAMINS AND HORMONES 2001; 62:1-94. [PMID: 11345896 DOI: 10.1016/s0083-6729(01)62001-6] [Citation(s) in RCA: 126] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- S Liao
- Tang Center for Herbal Medicine Research, Ben May Institute for Cancer Research, and Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA
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Duffy SJ, Vita JA, Holbrook M, Swerdloff PL, Keaney JF. Effect of acute and chronic tea consumption on platelet aggregation in patients with coronary artery disease. Arterioscler Thromb Vasc Biol 2001; 21:1084-9. [PMID: 11397724 DOI: 10.1161/01.atv.21.6.1084] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Epidemiological studies suggest that tea consumption is associated with a decreased risk of cardiovascular events, but the mechanisms of benefit remain undefined. Platelet aggregation is a precipitating event in cardiovascular disease, and tea contains antioxidant flavonoids that are known to decrease platelet aggregation in vitro. To test the effect of tea consumption on platelet aggregation, we randomized 49 patients with coronary artery disease to either 450 mL of black tea or water consumed initially, followed by 900 mL of tea or water daily for 4 weeks in a crossover design. Ex vivo platelet aggregation in platelet-rich plasma was assessed in response to ADP and thrombin receptor-activating peptide at baseline and 2 hours and 4 weeks after beverage consumption. We observed dose-dependent platelet aggregation in response to each agonist, and neither relation was altered by acute or chronic tea consumption. Plasma flavonoids increased with acute and chronic tea consumption, indicating adequate absorption of tea flavonoids. In conclusion, these results demonstrate that acute and chronic black tea consumption does not affect ex vivo platelet aggregation in patients with coronary artery disease. These findings suggest that an effect of tea flavonoids on platelet aggregation is unlikely to be the explanation for the reduction in risk of cardiovascular events noted in epidemiological studies.
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Affiliation(s)
- S J Duffy
- Evans Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA 02118, USA
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Tijburg LB, Mattern T, Folts JD, Weisgerber UM, Katan MB. Tea flavonoids and cardiovascular disease: a review. Crit Rev Food Sci Nutr 1997; 37:771-85. [PMID: 9447275 DOI: 10.1080/10408399709527802] [Citation(s) in RCA: 162] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- L B Tijburg
- Unilever Research Laboratorium, Vlaardingen, The Netherlands
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Kandaswami C, Middleton E. Free radical scavenging and antioxidant activity of plant flavonoids. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1994; 366:351-76. [PMID: 7771265 DOI: 10.1007/978-1-4615-1833-4_25] [Citation(s) in RCA: 253] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- C Kandaswami
- Department of Medicine, School of Medicine and Biomedical Sciences, State University of New York, Buffalo 14203, USA
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Matsumoto R, Naka M, Omawari N, Fujitani B, Aishita H. Effects of OP-41483·α-CD, a stable prostacyclin analog, on cultured endothelial cell dysfunction caused by 15(S)-hydroperoxy-5,8,11,13-eicosatetraenoic acid (15-HPETE) in vitro. Life Sci 1993. [DOI: 10.1016/s0024-3205(05)80015-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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