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Régnier M, Van Hul M, Roumain M, Paquot A, de Wouters d’Oplinter A, Suriano F, Everard A, Delzenne NM, Muccioli GG, Cani PD. Inulin increases the beneficial effects of rhubarb supplementation on high-fat high-sugar diet-induced metabolic disorders in mice: impact on energy expenditure, brown adipose tissue activity, and microbiota. Gut Microbes 2023; 15:2178796. [PMID: 36803220 PMCID: PMC9980659 DOI: 10.1080/19490976.2023.2178796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Consumption of prebiotics and plant-based compounds have many beneficial health effects through modulation of gut microbiota composition and are considered as promising nutritional strategy for the treatment of metabolic diseases. In the present study, we assessed the separated and combined effects of inulin and rhubarb on diet-induced metabolic disease in mice. We showed that supplementation with both inulin and rhubarb abolished the total body and fat mass gain upon high-fat and high-sucrose diet (HFHS) as well as several obesity-associated metabolic disorders. These effects were associated with increased energy expenditure, lower whitening of the brown adipose tissue, higher mitochondria activity and increased expression of lipolytic markers in white adipose tissue. Despite modifications of intestinal gut microbiota and bile acid compositions by inulin or rhubarb alone, combination of both inulin and rhubarb had minor additional impact on these parameters. However, the combination of inulin and rhubarb increased the expression of several antimicrobial peptides and higher goblet cell numbers, thereby suggesting a reinforcement of the gut barrier. Together, these results suggest that the combination of inulin and rhubarb in mice potentiates beneficial effects of separated rhubarb and inulin on HFHS-related metabolic disease and could be considered as nutritional strategy for the prevention and treatment of obesity and related pathologies.
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Affiliation(s)
- Marion Régnier
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium,WELBIO asbl, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium
| | - Matthias Van Hul
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium,WELBIO asbl, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium
| | - Martin Roumain
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Louvain Drug Research Institute (LDRI), UCLouvain, Université catholique de Louvain, Brussels, Belgium
| | - Adrien Paquot
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Louvain Drug Research Institute (LDRI), UCLouvain, Université catholique de Louvain, Brussels, Belgium
| | - Alice de Wouters d’Oplinter
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium,WELBIO asbl, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium
| | - Francesco Suriano
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium,WELBIO asbl, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium,current address: Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
| | - Amandine Everard
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium,WELBIO asbl, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium
| | - Nathalie M. Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium
| | - Giulio G. Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group (BPBL), Louvain Drug Research Institute (LDRI), UCLouvain, Université catholique de Louvain, Brussels, Belgium
| | - Patrice D. Cani
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université catholique de Louvain, Brussels, Belgium,WELBIO asbl, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Wavre, Belgium,CONTACT Patrice D. Cani LDRI, Metabolism and Nutrition Research Group, UCLouvain, Université Catholique de Louvain, Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), Av. E. Mounier, 73 box B1.73.11, B-1200, Brussels, Belgium
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Zhang W, Zhang R, Chang Z, Wang X. Resveratrol activates CD8+ T cells through IL-18 bystander activation in lung adenocarcinoma. Front Pharmacol 2022; 13:1031438. [PMCID: PMC9630476 DOI: 10.3389/fphar.2022.1031438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
Resveratrol, a natural product, has demonstrated anti-tumor effects in various kinds of tumor types, including colon, breast, and pancreatic cancers. Most research has focused on the inhibitory effects of resveratrol on tumor cells themselves rather than resveratrol’s effects on tumor immunology. In this study, we found that resveratrol inhibited the growth of lung adenocarcinoma in a subcutaneous tumor model by using the β-cyclodextrin-resveratrol inclusion complex. After resveratrol treatment, the proportion of M2-like tumor-associated macrophages (TAMs) was reduced and tumor-infiltrating CD8T cells showed significantly increased activation. The results of co-culture and antibody neutralization experiments suggested that macrophage-derived IL-18 may be a key cytokine in the resveratrol anti-tumor effect of CD8T cell activation. The results of this study demonstrate a novel view of the mechanisms of resveratrol tumor suppression. This natural product could reprogram TAMs and CD8T effector cells for tumor treatment.
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Affiliation(s)
- Wei Zhang
- Emergency and Disaster Medical Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Ruohao Zhang
- School of Medicine, Sun Yat-sen University, Shenzhen, China
| | - Zhiguang Chang
- Edmond H. Fischer Translational Medical Research Laboratory, Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- *Correspondence: Zhiguang Chang, ; Xiaobo Wang,
| | - Xiaobo Wang
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- *Correspondence: Zhiguang Chang, ; Xiaobo Wang,
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An J, Yang J, Wei Y, Liu Y, Song Y, Zhang Z, Pan Y. Identification of the metabolites of rhapontigenin in rat and human by ultra-high-performance liquid chromatography-high-resolution mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e9180. [PMID: 34363627 DOI: 10.1002/rcm.9180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/16/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
RATIONALE Rhapontigenin, a stilbene compound isolated from the medicinal plant of rhubarb rhizomes, has shown a variety of biological activities. The purpose of this study was to identify and characterize the metabolites of rhapontigenin in rat liver microsomes, hepatocytes, urine, and human liver microsomes and hepatocytes. METHODS The samples were analyzed by ultra-high-performance liquid chromatography combined with electrospray ionization quadrupole/orbitrap high-resolution mass spectrometry (UPLC-Q/Orbitrap-HRMS). The structures of the metabolites were interpreted by MS, MS/MS data, and elemental compositions. RESULTS A total of 11 metabolites were detected and tentatively identified. M1, identified as piceatannol, was unambiguously identified using reference standard. Our results suggested that rhapontigenin was metabolized through the following pathways: (a) demethylation to produce piceatannol (M1), which further underwent oxidation to form ortho-quinone intermediate. This intermediate was reactive and conjugated with GSH (M10 and M11), which were further converted into N-acetyl-cysteine and excreted in urine. M1 also underwent sulfation (M8) and glucuronidation (M5); (b) direct sulfation, forming M6 and M7; and (c) direct glucuronidation to form M2, M3, and M4. Glucuronidation was a major metabolic pathway in hepatocytes and urine. CONCLUSIONS The current study provides an overview of the metabolism of rhapontigenin, which is of great importance for us to understand the disposition of this compound.
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Affiliation(s)
- Jingzhi An
- Department of Clinical Pharmacy, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jie Yang
- Department of Clinical Pharmacy, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuan Wei
- Department of Clinical Pharmacy, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yunsi Liu
- Department of Radiological, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yan Song
- Department of Radiological, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zuzhuo Zhang
- Department of Radiological, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ying Pan
- Department of Pharmacy, The Third Hospital of Hebei Medical University, Shijiazhuang, China
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Ghafouri A, hajiluian G, karegar SJ, Hosseini S, Shidfar S, Kamalinejad M, AghaHosseini F, Heydari I, Shidfar F. The effect of Aqueous, Ethanolic extracts of Rheum ribeson insulin sensitivity, inflammation, oxidative stress in patients with type 2 diabetes mellitus: A Randomized, Double-Blind, Placebo-Controlled Trial. J Herb Med 2020. [DOI: 10.1016/j.hermed.2020.100389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Lee EH, Baek SY, Park JY, Kim YW. Emodin in Rheum undulatum inhibits oxidative stress in the liver via AMPK with Hippo/Yap signalling pathway. PHARMACEUTICAL BIOLOGY 2020; 58:333-341. [PMID: 32306810 PMCID: PMC7191907 DOI: 10.1080/13880209.2020.1750658] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 02/17/2020] [Accepted: 03/28/2020] [Indexed: 05/31/2023]
Abstract
Context: Emodin is a compound in Rheum undulatum Linne (Polygonaceae) that has been reported to exert anti-inflammatory, antibacterial, and antiallergic effects.Objective: Oxidative stress is a causative agent of liver inflammation that may lead to fibrosis and hepato-carcinoma. In this study, we investigated the antioxidant effects of emodin and its mechanism.Materials and methods: We used the hepatocyte stimulated by arachidonic acid (AA) + iron cotreatment and the C57B/6 mice orally injected with acetaminophen (APAP, 500 mg/kg, 6 h), as assessed by immunoblot and next generation sequencing (NGS). Emodin was pre-treated in hepatocyte (3 ∼ 30 μM) for 1 h before AA + iron, and in mice (10 and 30 m/kg, P.O.) for 3 days before APAP.Results: In vitro, emodin treatment inhibited the cell death induced by AA + iron maximally at a dose of 10 μM (EC50 > 3 μM). In addition, emodin attenuated the decrease of anti-apoptotic proteins, and restored mitochondria membrane potential as mediated by the liver kinase B1 (LKB1)-AMP-activated protein kinase (AMPK) pathway. LKB1 mediated AMPK activation was verified using the LKB1 deficient cell line, HeLa. Emodin (10 μM; after 10 min) also induced the phosphorylation of Yes-associated protein 1 (YAP1), the main downstream target of the Hippo signalling pathway that mediated oxidative stress or the ROS-initiated signalling pathway. In vivo, the oral treatment of emodin (10 and 30 m/kg, 3 days) decreased APAP-induced hepatic damage, as indicated by decreases in antioxidant genes as well as tissue damage.Conclusion: Our results show that emodin inhibits oxidative liver injury via the AMPK/YAP mediated pathway.
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Affiliation(s)
- Eun Hye Lee
- Department of Biomedical Science, Kyungpook National University, Daegu, Korea
| | - Su Youn Baek
- Institute for Phylogenomics and Evolution, Kyungpook National University, Daegu, Korea
| | - Ji Young Park
- Department of Biomedical Science, Kyungpook National University, Daegu, Korea
| | - Young Woo Kim
- School of Korean Medicine, Dongguk University, Gyeongju, Korea
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Régnier M, Rastelli M, Morissette A, Suriano F, Le Roy T, Pilon G, Delzenne NM, Marette A, Van Hul M, Cani PD. Rhubarb Supplementation Prevents Diet-Induced Obesity and Diabetes in Association with Increased Akkermansia muciniphila in Mice. Nutrients 2020; 12:nu12102932. [PMID: 32987923 PMCID: PMC7601677 DOI: 10.3390/nu12102932] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/17/2020] [Accepted: 09/22/2020] [Indexed: 12/15/2022] Open
Abstract
Obesity and obesity-related disorders, such as type 2 diabetes have been progressively increasing worldwide and treatments have failed to counteract their progression. Growing evidence have demonstrated that gut microbiota is associated with the incidence of these pathologies. Hence, the identification of new nutritional compounds, able to improve health through a modulation of gut microbiota, is gaining interest. In this context, the aim of this study was to investigate the gut-driving effects of rhubarb extract in a context of diet-induced obesity and diabetes. Eight weeks old C57BL6/J male mice were fed a control diet (CTRL), a high fat and high sucrose diet (HFHS) or a HFHS diet supplemented with 0.3% (g/g) of rhubarb extract for eight weeks. Rhubarb supplementation fully prevented HFHS-induced obesity, diabetes, visceral adiposity, adipose tissue inflammation and liver triglyceride accumulation, without any modification in food intake. By combining sequencing and qPCR methods, we found that all these effects were associated with a blooming of Akkermansia muciniphila, which is strongly correlated with increased expression of Reg3γ in the colon. Our data showed that rhubarb supplementation is sufficient to protect against metabolic disorders induced by a diet rich in lipid and carbohydrates in association with a reciprocal interaction between Akkermansia muciniphila and Reg3γ.
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Affiliation(s)
- Marion Régnier
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
| | - Marialetizia Rastelli
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
| | - Arianne Morissette
- Department of Medicine, Faculty of Medicine, Cardiology Axis of the Quebec Heart and Lung Institute, Quebec, QC G1V 4G5, Canada; (A.M.); (G.P.); (A.M.)
| | - Francesco Suriano
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
| | - Tiphaine Le Roy
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
| | - Geneviève Pilon
- Department of Medicine, Faculty of Medicine, Cardiology Axis of the Quebec Heart and Lung Institute, Quebec, QC G1V 4G5, Canada; (A.M.); (G.P.); (A.M.)
| | - Nathalie M Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
| | - André Marette
- Department of Medicine, Faculty of Medicine, Cardiology Axis of the Quebec Heart and Lung Institute, Quebec, QC G1V 4G5, Canada; (A.M.); (G.P.); (A.M.)
| | - Matthias Van Hul
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
| | - Patrice D Cani
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (M.R.); (M.R.); (F.S.); (T.L.R.); (N.M.D.); (M.V.H.)
- Correspondence: ; Tel.: +32-(0)2-764-73-97
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Zheng M, Wu Y. Piceatannol suppresses proliferation and induces apoptosis by regulation of the microRNA‑21/phosphatase and tensin homolog/protein kinase B signaling pathway in osteosarcoma cells. Mol Med Rep 2020; 22:3985-3993. [PMID: 32901863 PMCID: PMC7533446 DOI: 10.3892/mmr.2020.11484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 08/22/2019] [Indexed: 12/13/2022] Open
Abstract
Piceatannol (Pice), a natural analog of resveratrol, has been identified as an anticancer agent in various cancers by modulating the expression of microRNAs (miRNAs/miRs). However, the molecular mechanisms underlying the anticancer effects of Pice in osteosarcoma (OS) cells remain unclear. Thus, we hypothesized that Pice exerts anticancer effects on OS cells via the regulation of miRNA expression. Herein, we performed a MTT assay and flow cytometric analysis to determine cell viability and apoptosis in OS cells treated with Pice, respectively. Our results showed that Pice inhibits proliferation in a dose-dependent manner induces the apoptosis of OS cells. More importantly, miRNA microarray analysis identified that Pice alters miRNA expression profiles in human OS cells after treatment with Pice, and miR-21 was the most significantly downregulated. In addition, the therapeutic effects of Pice on OS cells were weakened by restoration of miR-21. In addition, we further verified that phosphatase and tensin homolog (PTEN), a tumor suppressor gene, is the functional target of miR-21 and Pice blocks the PTEN/AKT signaling pathway through inhibiting miR-21 expression in OS cells. Our findings suggested that Pice may exert anticancer effects on OS cells via mediating the miR-21/PTEN/AKT signaling pathway and could be considered to be a potential anticancer agent for treating OS.
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Affiliation(s)
- Mingyue Zheng
- Department of Acu‑mox and Tuina, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Yaochi Wu
- Department of Acu‑mox and Tuina, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
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Banik K, Ranaware AM, Harsha C, Nitesh T, Girisa S, Deshpande V, Fan L, Nalawade SP, Sethi G, Kunnumakkara AB. Piceatannol: A natural stilbene for the prevention and treatment of cancer. Pharmacol Res 2020; 153:104635. [DOI: 10.1016/j.phrs.2020.104635] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/19/2019] [Accepted: 01/06/2020] [Indexed: 12/13/2022]
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Chillemi R, Sciuto S, Spatafora C, Tringali C. Anti-tumor Properties of Stilbene-based Resveratrol Analogues: Recent Results. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0700200419] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Recent literature about stilbene-based analogues of resveratrol (1) has been reviewed, and a total of 94 compounds are reported (see structures 4 – 97), selected either for their promising anti-tumor properties or as comparative terms in SAR studies. As a general outline, these recent literature data confirm the previously reported observation that minimal modification in the nature and position of the substituents on the stilbene nucleus may cause large variations in their biological activity and, more specifically, in their anti-tumor properties. Among the polyhydroxylated stilbenes, it has been established that those with either a catechol or pyrogallol moiety are far better radical scavengers than either 1 or other analogues lacking an ortho-dihydroxy group, and this property was shown to be related to pro-apoptotic activity. In the large majority of cases where couples of E- and Z-isomers were evaluated for either cytotoxic or pro-apoptotic activity, the Z-isomers were significantly more active than their E analogues; nevertheless, a general rule stating that stilbenoids with Z configuration of the double bond display a considerably higher antiproliferative activity than their E-isomers cannot be considered as established. A variety of methoxystilbenes has been reported recently: in many cases these analogues showed either potent antiproliferative and pro-apoptotic activity or strong inhibition of TNFα-induced activation of NF- kB. Globally considered, polymethoxystilbenes are a sub-group of great interest among the resveratrol analogues: these analogues appear worthy of a deeper evaluation also in connection with their potential anti-angiogenic properties. In addition, in vivo studies indicate that methoxystilbenes undergo different metabolic conversion and have a higher bioavailability than resveratrol. The potent activity of some amino- and halogenated stilbenes is undoubtedly worthy of attention, but the toxicity of these compounds to normal cells has rarely been evaluated. In conclusion, the synthesis and evaluation of stilbene-based resveratrol analogues proved to be a highly active field of research and has recently afforded compounds with either cytotoxic or pro-apoptotic activity in the nanomolar range. Nevertheless, the exact structural determinants to optimize the anti-tumor properties of these compounds and details of their mechanism of action remain to be clarified.
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Affiliation(s)
- Rosa Chillemi
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Sebastiano Sciuto
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Carmela Spatafora
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy
| | - Corrado Tringali
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy
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Trinh TA, Lee D, Park S, Kim SH, Park JG, Kim JH, Kang KS. Stilbenes contribute to the anticancer effects of Rheum undulatum L. through activation of apoptosis. Oncol Lett 2019; 17:2953-2959. [PMID: 30854073 DOI: 10.3892/ol.2019.9926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 11/09/2018] [Indexed: 02/06/2023] Open
Abstract
Rheum undulatum L. (R. undulatum) is a medicinal plant used for the treatment of inflammatory diseases in East Asian countries. Numerous stilbenes isolated from R. undulatum have been revealed to possess anticancer effects. The aim of the present study was to evaluate the effect of extracts and compounds isolated from R. undulatum on human gastric cancer cell viability and to elucidate their molecular mechanism of action on the apoptosis pathway. The results demonstrated that aloe-emodin and chrysophanol 1-O-β-D-glucopyranoside, isolated from the methanolic extract of dried rhizomes of R. undulatum, exhibited anti-proliferative effects on the human gastric carcinoma cell line AGS, with IC50 values of 84.66±0.44 and 68.28±0.29 µM, respectively. The percentage of apoptotic cells increased significantly following treatment with each compound at a concentration of 100 µM, compared with that in the non-treated group in the image-based cytometry assay. Western blot analysis revealed that these compounds activated the caspase cascade and inhibited B-cell lymphoma-2, an anti-apoptotic protein.
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Affiliation(s)
- Tuy An Trinh
- College of Korean Medicine, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Seonju Park
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Gyeonggi 21983, Republic of Korea
| | - Seung Hyun Kim
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Gyeonggi 21983, Republic of Korea
| | - Jae Gyu Park
- Advanced Bio Convergenve Center, Pohang Technopark Foundation, Pohang, North Gyeongsang 37668, Republic of Korea
| | - Ji Hwan Kim
- College of Korean Medicine, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
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Lipid Peroxidation and Antioxidant Activities of the Aqueous Rhizome Extract of Rheum officinale Baillon. J FOOD QUALITY 2018. [DOI: 10.1155/2018/5258276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022] Open
Abstract
Generation of reactive oxygen species (ROS) is associated with dysregulation of antioxidant defense mechanisms and incidence of human diseases. The specific aim of this study was to investigate the lipid oxidation and antioxidant activity of aqueous extract of Rheum officinale Baillon rhizome in order to evaluate its potential as a future novel natural antioxidant resource and a functional ingredient in food and pharmaceutical formations. Total phenolic and flavonoid contents of Rheum rhizome extract were dose dependently increased. Consistent with this, radical scavenging activities of Rheum rhizome extract as determined by 2,2-diphenyl-1-picrylhydrazyl assay and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activity were significantly elevated as the concentration increased. In addition, the treatment of aqueous Rheum rhizome extract significantly increased ferric reducing and copper chelating activities. According to results of thiobarbituric acid reactive substance analysis, Rheum rhizome extract significantly delayed lipid oxidation. Preincubation with Rheum rhizome extract significantly inhibited tert-butyl hydroperoxide- (t-BHP-) induced ROS generation. Moreover, superoxide anion production was significantly lower in Rheum rhizome extract-treated RAW264.7 macrophage cells than t-BHP-incubated cells (p<0.05). These findings suggest that Rheum officinale Baillon rhizome extract has a potential as an excellent natural antioxidant agent.
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Hwang DS, Gu PS, Kim N, Jang YP, Oh MS. Effects of Rhei Undulati Rhizoma on lipopolysaccharide-induced neuroinflammation in vitro and in vivo. ENVIRONMENTAL TOXICOLOGY 2018; 33:23-31. [PMID: 28984087 DOI: 10.1002/tox.22463] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 06/07/2023]
Abstract
Neuroinflammation plays a critical role in the pathogenesis of degenerative brain diseases such as Alzheimer's disease and Parkinson's disease. Microglia are the major components of the brain immune system that regulate inflammatory processes. Activated microglia release pro-inflammatory factors and cytokines, resulting in neuronal cell death. We focused on inhibiting the activation of microglia from a stimulus as a strategy to search for neuroprotective drugs. Rhei Undulati Rhizoma (RUR) is traditionally used to treat various inflammatory disorders. In this study, we investigated whether RUR modulates inflammatory processes in lipopolysaccharide (LPS)-stimulated BV2 microglia cells and the mouse brain. RUR exerted anti-neuroinflammatory effects by inhibiting the production of nitric oxide and reactive oxygen species induced by LPS via the downregulation of transcription factors such as inducible nitric oxide synthase and cyclooxygenase-2 (COX-2) without causing cytotoxicity. RUR also regulated mitogen-activated protein kinase pathway by inhibiting phosphorylation of p38 and c-Jun N-terminal kinases and translocation of nuclear factor kappa B. Moreover, RUR attenuated LPS-induced glial activation and COX-2 expression in the substantia nigra and hippocampus of the mouse brain. These results indicate that RUR is a potential candidate to treat neurodegenerative diseases by regulating neuroinflammation.
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Affiliation(s)
- Deok-Sang Hwang
- Department of Oriental Gynecology, College of Oriental Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Pil Sung Gu
- Department of Life and Nanopharmaceutical Sciences, Graduate school, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Namkwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate school, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Young Pyo Jang
- Department of Life and Nanopharmaceutical Sciences, Graduate school, Kyung Hee University, Seoul, 02447, Republic of Korea
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Graduate school, Kyung Hee University, Seoul, 02447, Republic of Korea
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, 02447, Republic of Korea
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Surh YJ, Na HK. Therapeutic Potential and Molecular Targets of Piceatannol in Chronic Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 928:185-211. [PMID: 27671818 DOI: 10.1007/978-3-319-41334-1_9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Piceatannol (3,3',4,5'-tetrahydroxy-trans-stilbene; PIC) is a naturally occurring stilbene present in diverse plant sources. PIC is a hydroxylated analog of resveratrol and produced from resveratrol by microsomal cytochrome P450 1A11/2 and 1B1 activities. Like resveratrol, PIC has a broad spectrum of health beneficial effects, many of which are attributable to its antioxidative and anti-inflammatory activities. PIC exerts anticarcinogenic effects by targeting specific proteins involved in regulating cancer cell proliferation, survival/death, invasion, metastasis, angiogenesis, etc. in tumor microenvironment. PIC also has other health promoting and disease preventing functions, such as anti-obese, antidiabetic, neuroptotective, cardioprotective, anti-allergic, anti-aging properties. This review outlines the principal biological activities of PIC and underlying mechanisms with special focus on intracellular signaling molecules/pathways involved.
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Affiliation(s)
- Young-Joon Surh
- Department of Molecular Medicine and Biopharmaceutical Sciences, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 151-742, South Korea.
| | - Hye-Kyung Na
- Department of Food and Nutrition, College of Human Ecology, Sungshin Women's University, Seoul, 142-732, South Korea.
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Borgohain MP, Lahkar M, Ahmed S, Chowdhury L, Kumar S, Pant R, Choubey A. Small Molecule Inhibiting Nuclear Factor-kB Ameliorates Oxidative Stress and Suppresses Renal Inflammation in Early Stage of Alloxan-Induced Diabetic Nephropathy in Rat. Basic Clin Pharmacol Toxicol 2017; 120:442-449. [DOI: 10.1111/bcpt.12718] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 11/22/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Manash P. Borgohain
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
| | - Mangala Lahkar
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
- Department of Pharmacology; Gauhati Medical College & Hospital; Guwahati Assam India
- Institute Level Biotech-hub; National Institute of Pharmaceutical Education & Research; Guwahati Assam India
| | - Sahabuddin Ahmed
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
| | - Liakat Chowdhury
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
| | - Saurabh Kumar
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
| | - Rajat Pant
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
| | - Abhinav Choubey
- Department of Pharmacology & Toxicology; National Institute of Pharmaceutical Education and Research; Guwahati Assam India
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Matsuda H, Nakamura S, Yoshikawa M. Degranulation Inhibitors from Medicinal Plants in Antigen-Stimulated Rat Basophilic Leukemia (RBL-2H3) Cells. Chem Pharm Bull (Tokyo) 2016; 64:96-103. [PMID: 26833437 DOI: 10.1248/cpb.c15-00781] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mast cells and basophils play important roles in both immediate- and late-phase reactions of type 1 allergy. Histamine, which is released from mast cells and basophils stimulated by an antigen or degranulation inducers, is usually determined as a degranulation marker in experiments on immediate allergic reactions in vitro. β-Hexosaminidase is also stored in secretory granules of the cells and is released concomitantly with histamine when the cells are immunologically activated, and recently this enzyme activity in the medium has been used as a marker of the degranulation. In this paper, we review our studies on the search for degranulation inhibitors, such as flavonoids, stilbenes, and curcuminoids, from medicinal plants using rat basophilic leukemia (RBL-2H3) cells.
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Seyed MA, Jantan I, Bukhari SNA, Vijayaraghavan K. A Comprehensive Review on the Chemotherapeutic Potential of Piceatannol for Cancer Treatment, with Mechanistic Insights. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:725-37. [PMID: 26758628 DOI: 10.1021/acs.jafc.5b05993] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Cancer is a diverse class of diseases characterized by uncontrolled cell growth that constitutes the greatest cause of mortality and morbidity worldwide. Despite steady progress, the treatment modalities of cancer are still insufficient. Several new concepts have emerged for therapeutic intervention in malignant diseases with the goal of identifying specific targets and overcoming resistance against current cytotoxic therapies. Many studies have reported the remarkable and significant properties of dietary plant polyphenols such as curcumin, resveratrol, flavopiridol, indirubin, magnolol, piceatannol, parthenolide, epigallocatechin gallate, and cucurbitacin as anticancer agents known for their pleiotropic effects on cancer, immune cells, and inflammation. Piceatannol, an analogue and metabolite of resveratrol, is a natural stilbene commonly found in grape skins and wine. Compared to resveratrol, this molecule exhibits superior bioactivities as an inhibitor of COX-1/2 and the CSN-associated kinase. Piceatannol is thought to be a potent natural compound with many therapeutic effects, such as the prevention of hypercholesterolemia, arrhythmia, atherosclerosis, angiogenesis, and cardiovascular diseases. It also demonstrates vasorelaxation, antioxidant, and anticancer activities. This comprehensive review summarizes the current data regarding the mechanisms of action of piceatannol, its chemopreventive properties, and its possible therapeutic potential against various types of human cancer.
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Affiliation(s)
- Mohamed Ali Seyed
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia (UKM), The National University of Malaysia , Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
- School of Life Sciences, B. S. Abdur Rahman University , Seethakathi Estate, Vandalur, 600048 Chennai, India
- Faculty of Medicine, University of Tabuk , Tabuk 71491, Saudi Arabia
| | - Ibrahim Jantan
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia (UKM), The National University of Malaysia , Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Syed Nasir Abbas Bukhari
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia (UKM), The National University of Malaysia , Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Kavitha Vijayaraghavan
- School of Life Sciences, B. S. Abdur Rahman University , Seethakathi Estate, Vandalur, 600048 Chennai, India
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Shimoda K, Kubota N, Uesugi D, Hamada H, Tanigawa M, Hamada H. Synthesis and pharmacological evaluation of glycosides of resveratrol, pterostilbene, and piceatannol. Ann N Y Acad Sci 2015; 1348:141-9. [DOI: 10.1111/nyas.12836] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kei Shimoda
- Department of Chemistry; Faculty of Medicine; Oita University; Oita Japan
| | - Naoji Kubota
- Department of Chemistry; Faculty of Medicine; Oita University; Oita Japan
| | - Daisuke Uesugi
- Department of Life Science; Faculty of Science; Okayama University of Science; Okayama Japan
| | | | - Masato Tanigawa
- Department of Physics; Faculty of Medicine; Oita University; Oita Japan
| | - Hiroki Hamada
- Department of Life Science; Faculty of Science; Okayama University of Science; Okayama Japan
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Sato D, Shimizu N, Shimizu Y, Akagi M, Eshita Y, Ozaki SI, Nakajima N, Ishihara K, Masuoka N, Hamada H, Shimoda K, Kubota N. Synthesis of glycosides of resveratrol, pterostilbene, and piceatannol, and their anti-oxidant, anti-allergic, and neuroprotective activities. Biosci Biotechnol Biochem 2014; 78:1123-8. [PMID: 25229845 DOI: 10.1080/09168451.2014.921551] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Resveratrol was glucosylated to its 3- and 4'-β-glucosides by cultured cells of Phytolacca americana. On the other hand, cultured P. americana cells glucosylated pterostilbene to its 4'-β-glucoside. P. americana cells converted piceatannol into its 4'-β-glucoside. The 3- and 4'-β-glucosides of resveratrol were further glucosylated to 3- and 4'-β-maltosides of resveratrol, 4'-β-maltoside of which is a new compound, by cyclodextrin glucanotransferase. Resveratrol 3-β-glucoside and 3-β-maltoside showed low 2,2-diphenyl-1-picrylhydrazyl free-radical-scavenging activity, whereas other glucosides had no radical-scavenging activity. Piceatannol 4'-β-glucoside showed the strongest inhibitory activity among the stilbene glycosides towards histamine release from rat peritoneal mast cells. Pterostilbene 4'-β-glucoside showed high phosphodiesterase inhibitory activity.
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Affiliation(s)
- Daisuke Sato
- a Faculty of Medicine, Department of Chemistry , Oita University , Oita , Japan
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Kim JS, Kang CG, Kim SH, Lee EO. Rhapontigenin suppresses cell migration and invasion by inhibiting the PI3K-dependent Rac1 signaling pathway in MDA-MB-231 human breast cancer cells. JOURNAL OF NATURAL PRODUCTS 2014; 77:1135-1139. [PMID: 24828286 DOI: 10.1021/np401078g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The invasive behavior of cancer cells resulting in metastasis is the major cause of cancer-related deaths. Rhapontigenin (1) has various biological activities including anticancer activities. However, whether and how 1 affects cancer invasion has never been explored. Here, we examined the anti-invasive effects of 1 and its underlying molecular mechanisms in the highly invasive human breast cancer cell line designated MDA-MB-231. At noncytotoxic concentrations, 1 strongly suppressed serum-induced cell migration and invasion as judged by Boyden chamber analysis and wound-healing assays, respectively. Compound 1 strikingly reduced Rac1 activity as judged by both absorbance-based and pull-down assays. In addition, its downstream effectors such as WASP-family verprolin homologous proteins 2 (WAVE-2) and p21-activated kinase 1 (PAK1) signaling cascades were attenuated after treatment with 1. Immunofluorescence staining showed that 1 diminished lamellipodia formation at the leading edge of cells. Finally, 1 decreased the phosphorylation of phosphoinisitide-3-kinase (PI3K) and AKT. Rac1 activity was inhibited by the PI3K inhibitor wortmannin. Taken together, these results suggest that 1 suppresses breast cancer cell migration and invasion, which is involved in inhibiting the PI3K-dependent Rac1 signaling pathway.
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Affiliation(s)
- Ji Sung Kim
- Cancer Preventive Material Development Research Center, College of Korean Medicine, Kyung Hee University , 1 Hoegi-dong, Dongdaemun-gu, Seoul, 130-701, Republic of Korea
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Li P, Tian W, Wang X, Ma X. Inhibitory effect of desoxyrhaponticin and rhaponticin, two natural stilbene glycosides from the Tibetan nutritional food Rheum tanguticum Maxim. ex Balf., on fatty acid synthase and human breast cancer cells. Food Funct 2014; 5:251-6. [DOI: 10.1039/c3fo60484e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Cieniak C, Liu R, Fottinger A, Smiley SAM, Guerrero-Analco JA, Bennett SAL, Haddad PS, Cuerrier A, Saleem A, Arnason JT, Foster BC. In vitro inhibition of metabolism but not transport of gliclazide and repaglinide by Cree medicinal plant extracts. JOURNAL OF ETHNOPHARMACOLOGY 2013; 150:1087-1095. [PMID: 24184081 DOI: 10.1016/j.jep.2013.10.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/10/2013] [Accepted: 10/13/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Interactions between conventional drug and traditional medicine therapies may potentially affect drug efficacy and increase the potential for adverse reactions. Cree traditional healing is holistic and patients may use medicinal plants simultaneously with the conventional drugs. However, there is limited information that these medicinal plants may interact with drugs and additional mechanistic information is required. In this study, extracts from traditionally used Cree botanicals were assessed for their potential interaction that could alter the disposition of two blood glucose lowering drugs, gliclazide (Diamicron) and repaglinide (Gluconorm) though inhibition of either metabolism or transport across cell membranes. MATERIALS AND METHODS The effect of 17 extracts on metabolism was examined in a human liver microsome assay by HPLC and individual cytochrome P450s 2C9, 2C19, 2C8 and 3A4 in a microplate fluorometric assay. Gliclazide, rhaponticin and its aglycone derivative, rhapontigenin were also examined in the fluorometric assay. The effect on transport was examined with 11 extracts using the intestinal epithelial Caco-2 differentiated cell monolayer model at times up to 180 min. RESULTS Both blood glucose lowering medications, gliclazide and repaglinide traversed the Caco-2 monolayer in a time-dependent manner that was not affected by the Cree plant extracts. Incubation of the Cree plant extracts inhibited CYP2C9, 2C19, 2C8 and 3A4-mediated metabolism, and the formation of four repaglinide metabolites: M4, m/z 451-A, m/z 451-B and the glucuronide of repaglinide in the human liver microsome assay. Gliclazide caused no significant inhibition. Likewise, rhaponticin had little effect on the enzymes causing changes of less than 10% with an exception of 17% inhibition of CYP2C19. By contrast, the aglycone rhapontigenin showed the greatest effects on all CYP-mediated metabolism. Its inhibition ranged from a mean of 58% CYP3A4 inhibition to 89% inhibition of CYP2C9. While rhaponticin and the aglycone did not show significant effects on repaglinide metabolism, they demonstrated inhibition of gliclazide metabolism. The aglycone significantly affected levels of gliclazide and its metabolites. CONCLUSION These studies demonstrate that the Cree plant extracts examined have the potential in vitro to cause drug interactions through effects on key metabolic enzymes.
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Affiliation(s)
- Carolina Cieniak
- Biology Department, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
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Desoxyrhapontigenin, a potent anti-inflammatory phytochemical, inhibits LPS-induced inflammatory responses via suppressing NF-κB and MAPK pathways in RAW 264.7 cells. Int Immunopharmacol 2013; 18:182-90. [PMID: 24295651 DOI: 10.1016/j.intimp.2013.11.022] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/20/2013] [Accepted: 11/22/2013] [Indexed: 11/21/2022]
Abstract
This study investigates the anti-inflammatory effects of a stilbene compound, desoxyrhapontigenin, which was isolated from Rheum undulatum. To determine the anti-inflammatory effects of this compound, lipopolysaccharide (LPS)-induced RAW 264.7 macrophages were treated with different concentrations of six stilbene derivatives. The results indicated that compared with other stilbene compounds, desoxyrhapontigenin (at 10, 30 and 50μM concentrations) significantly inhibited nitric oxide (NO) production, nuclear factor kappa B (NF-κB) activation, the protein expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) expression. Therefore, the anti-inflammatory mechanism of desoxyrhapontigenin was investigated in detail. The results of this investigation demonstrated that desoxyrhapontigenin suppressed not only LPS-stimulated pro-inflammatory cytokine secretions, including the secretions of tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6), but also PGE2 release. As assayed by electrophoretic mobility shift assays (EMSAs), desoxyrhapontigenin also produced the dose-dependent inhibition of the LPS-induced activation of NF-κB and AP-1. Moreover, desoxyrhapontigenin inhibited the protein expression of myeloid differentiation primary response gene 88 (MyD88), IκB kinase (IKK) phosphorylation and the degradation of IκBα. Activations of p-JNK1 and p-Akt were also significantly inhibited, and phosphorylation of p38 and ERK was down-regulated. A further study revealed that desoxyrhapontigenin (5 and 25mg/kg, i.p.) reduced paw swelling in carrageenan-induced acute inflammation model in vivo. On the whole, these results indicate that desoxyrhapontigenin showed anti-inflammatory properties by the inhibition of iNOS and COX-2 expression via the down-regulation of the MAPK signaling pathways and the inhibition of NF-κB and Akt activation.
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Zhao XH, Han F, Li YL, Yue HL. Preparative isolation and purification of three stilbene glycosides from the tibetan medicinal plant Rheum tanguticum maxim. Ex Balf. by high-speed counter-current chromatography. PHYTOCHEMICAL ANALYSIS : PCA 2013; 24:171-175. [PMID: 22936596 DOI: 10.1002/pca.2397] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 07/12/2012] [Accepted: 07/17/2012] [Indexed: 06/01/2023]
Abstract
INTRODUCTION Stilbene glycosides are the primary constituents of Rheum tanguticum Maxim. ex Balf., to which different bioactivities has been attributed, including: anti-HIV, anti-oxidant, anti-tumour, anti-malarial, and anti-allergy activity. However, effective methods for the isolation and purification of stilbene glycosides, such as trans-rhapontin, cis-rhapontin and trans-desoxyrhaponticin, from this herb are not currently available. OBJECTIVE To develop an efficient method for the preparative isolation and purification of three stilbene glycosides from Rheum tanguticum Maxim. ex Balf. via high-speed counter-current chromatography (HSCCC). METHODS A solvent system composed of chloroform:n-butanol:methanol:water (4:1:3:2, v/v/v/v) was developed for the separation. The upper phase was used as the stationary phase, and the lower phase was used as the mobile phase. The flow rate was 1.8 mL/min. The apparatus was controlled at 800 rpm and 25 °C, and the effluent was monitored at 280 nm. Chemical constituents were analysed by high-performance liquid chromatography (HPLC), and their structures were identified by ¹H- and ¹³C-NMR. RESULTS Under the optimised conditions, 25.5 mg trans-rhapontin, 16.0 mg cis-rhapontin and 20.5 mg trans-desoxyrhaponticin were separated from 80 mg crude sample; the isolates had purities of 99.6, 97.2 and 99.2%, respectively. CONCLUSION A simple and efficient HSCCC method has been optimised for the preparative separation of stilbene glycosides from Rheum tanguticum Maxim. ex Balf.
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Affiliation(s)
- Xiao-Hui Zhao
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China.
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Hsu SC, Chung JG. Anticancer potential of emodin. Biomedicine (Taipei) 2012; 2:108-116. [PMID: 32289000 PMCID: PMC7104001 DOI: 10.1016/j.biomed.2012.03.003] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 02/06/2012] [Accepted: 03/28/2012] [Indexed: 02/08/2023] Open
Abstract
Traditional Chinese Medicine (TCM) is widely used in clinical research due to its low toxicity, low number of side effects, and low cost. Many components of common fruits and vegetables play well-documented roles as chemopreventive or chemotherapeutic agents that suppress tumorigenesis. Anthraquinones are commonly extracted from the Polygonaceae family of plants, e.g., Rheum palmatum and Rheum officinale. Some of the major chemical components of anthraquinone and its derivatives, such as aloe-emodin, danthron, emodin, chrysophanol, physcion, and rhein, have demonstrated potential anticancer properties. This review evaluates the pharmacological effects of emodin, a major component of Aloe vera. In particular, emodin demonstrates anti-neoplastic, anti-inflammatory, anti-angiogenesis, and toxicological potential for use in pharmacology, both in vitro and in vivo. Emodin demonstrates cytotoxic effects (e.g., cell death) through the arrest of the cell cycle and the induction of apoptosis in cancer cells. The overall molecular mechanisms of emodin include cell cycle arrest, apoptosis, and the promotion of the expression of hypoxia-inducible factor 1α, glutathione S-transferase P, N-acetyltransferase, and glutathione phase I and II detoxification enzymes while inhibiting angiogenesis, invasion, migration, chemical-induced carcinogen-DNA adduct formation, HER2/neu, CKII kinase, and p34cdc2 kinase in human cancer cells. Hopefully, this summary will provide information regarding the actions of emodin in cancer cells and broaden the application potential of chemotherapy to additional cancer patients in the future.
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Affiliation(s)
- Shu-Chun Hsu
- Department of Nutrition, China Medical University, Taichung 40402, Taiwan
| | - Jing-Gung Chung
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan
- Department of Biotechnology, Asia University, Taichung 413, Taiwan
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Liu WH, Chang LS. Suppression of Akt/Foxp3-mediated miR-183 expression blocks Sp1-mediated ADAM17 expression and TNFα-mediated NFκB activation in piceatannol-treated human leukemia U937 cells. Biochem Pharmacol 2012; 84:670-80. [PMID: 22705645 DOI: 10.1016/j.bcp.2012.06.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 06/07/2012] [Accepted: 06/07/2012] [Indexed: 12/14/2022]
Abstract
To address the mechanism of piceatannol in inhibiting TNFα-mediated pathway, studies on piceatannol-treated human leukemia U937 cells were conducted. Piceatannol treatment reduced TNFα shedding and NFκB activation and decreased the release of soluble TNFα into the culture medium of U937 cells. Moreover, ADAM17 expression was down-regulated in piceatannol-treated cells. Over-expression of ADAM17 abrogated the ability of piceatannol to suppress TNFα-mediated NFκB activation. Piceatannol-evoked β-TrCP up-regulation promoted Sp1 degradation, thus reducing transcriptional level of ADAM17 gene in U937 cells. Piceatannol treatment induced p38 MAPK phosphorylation but inactivation of Akt and ERK. In contrast to p38 MAPK inhibitor or restoration of ERK activation, transfection of constitutive active Akt abolished the effect of piceatannol on β-TrCP, Sp1 and ADAM17 expression. Piceatannol-elicited down-regulation of miR-183 expression was found to cause β-TrCP up-regulation. Inactivation of Akt resulted in Foxp3 down-regulation and reduced miR-183 expression in piceatannol-treated cells. Knock-down of Foxp3 and chromatin immunoprecipitating revealed that Foxp3 genetically regulated transcription of miR-183 gene. Taken together, our data indicate that suppression of Akt/Foxp3-mediated miR-183 expression blocks Sp1-mediated ADAM17 expression in piceatannol-treated U937 cells. Consequently, piceatannol suppresses TNFα shedding, leading to inhibition of TNFα/NFκB pathway.
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Affiliation(s)
- Wen-Hsin Liu
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
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Moon MK, Kang DG, Lee AS, Yeom KB, Kim JS, Lee HS. Anti-Atherogenic Effects of the Aqueous Extract of Rhubarb in Rats Fed an Atherogenic Diet. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 36:555-68. [DOI: 10.1142/s0192415x08005977] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present study was designed to investigate whether the aqueous extract of rhubarb (AR) could prevent the development of atherosclerosis through regulating vascular inflammatory processes in rats fed with an atherogenic diet. AR significantly reduced plasma low-density lipoprotein-cholesterol, and increased plasma high-density lipoprotein-cholesterol in rats fed with an atherogenic diet. AR inhibited vascular expressions of endothelin-1 (ET-1) and endothelin-converting enzyme (ECE) induced in rats with an atherogenic diet. On the other hand, AR augmented the vascular expression of endothelial nitric oxide synthase (ecNOS) and restored vascular nitric oxide (NO) production. Furthermore, AR suppressed the elevated expression of vascular nuclear factor-κB (NF-κB) p65 as well as adhesion molecules, including intracellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and E-selectin in rats fed with an atherogenic diet. Also, AR decreased endothelial expression of ICAM-1 and ET-1 in aorta. These results suggest that AR suppresses the development of atherosclerosis in the atherogenic-diet rat model through inhibiting vascular expressions of proinflammatory and adhesion molecules via the regulation of nitric oxide and endothelin system.
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Affiliation(s)
- Mi Kyoung Moon
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - Dae Gill Kang
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - An Sook Lee
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - Ki Bok Yeom
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - Jin Sook Kim
- Korea Institute of Oriental Medicine, Jeonmin-dong, Yusung-gu, Daejeon, 305-811, Republic of Korea
| | - Ho Sub Lee
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
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Pharmacokinetics, bioavailability and metabolism of rhaponticin in rat plasma by UHPLC–Q-TOF/MS and UHPLC–DAD–MSn. Bioanalysis 2012; 4:713-23. [DOI: 10.4155/bio.12.24] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Rhaponticin (Rheum L.) demonstrates a variety of pharmacological activities, including antitumor, antithrombotic and antioxidant effect. However, there is no information describing the pharmacokinetics, bioavailability and metabolism of rhaponticin after intravenous administration. Results: UHPLC–Q-TOF/MS and UHPLC–multistage tandem MS methods were developed for the pharmacokinetics, bioavailability and metabolism of rhaponticin in rats. The metabolite of rhaponticin, rhapontigenin, a potent inhibitor of cytochrome P450, was confirmed by UHPLC–multistage tandem MS. The plasma profile of rhaponticin and rhapontigenin was determined by UHPLC–Q-TOF/MS. The results showed that rhaponticin was rapidly distributed and eliminated from rat plasma. The absolute oral bioavailability of rhaponticin was calculated to be 0.03%. The plasma concentrations of rhapontigenin rapidly increased and gradually eliminated after intravenous administration. Conclusion: The present pharmacokinetics, bioavailability and metabolism studies of rhaponticin will provide helpful information for development of suitable dosage forms and clinical references on rational administration.
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Celebre G, De Luca G, Di Pietro ME. Conformational Distribution of trans-Stilbene in Solution Investigated by Liquid Crystal NMR Spectroscopy and Compared with in Vacuo Theoretical Predictions. J Phys Chem B 2012; 116:2876-85. [DOI: 10.1021/jp211962w] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Giorgio Celebre
- Dipartimento di Chimica, Università della Calabria, v. P. Bucci, I-87036
Rende (CS), Italy
| | - Giuseppina De Luca
- Dipartimento di Chimica, Università della Calabria, v. P. Bucci, I-87036
Rende (CS), Italy
| | - Maria Enrica Di Pietro
- Dipartimento di Chimica, Università della Calabria, v. P. Bucci, I-87036
Rende (CS), Italy
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Li Z, Yang X, Dong S, Li X. DNA breakage induced by piceatannol and copper(II): Mechanism and anticancer properties. Oncol Lett 2012; 3:1087-1094. [PMID: 22783397 DOI: 10.3892/ol.2012.597] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 01/26/2012] [Indexed: 11/05/2022] Open
Abstract
Piceatannol (3,3',4,5'-tetrahydroxy-trans-stilbene; Pice), found in a variety of plant sources including grapes, red wine, peanuts and rhubarb, is known as a metabolite and analog of Resveratrol (3,5,4'-trihydroxy-trans-stilbene; Res) and has higher bioactivity than Res. To explore the mechanism of DNA damage induced by Pice in the presence of copper (Cu)(II), gel electrophoresis, UV-visible spectroscopy, fluorescence spectroscopy and Fourier transform infrared spectroscopy were used. The results of gel electrophoresis demonstrated that the hydroxyl radical played a critical role in DNA cleavage. Spectroscopy confirmed that the mechanism of DNA cleavage induced by Pice-Cu(II) involves the Haber Weiss and Fenton reactions. Pice chelates with Cu(II) as a bidentate ligand, and the Pice-Cu(II) complex undergoes intramolecular electron transfer to form the semiquinone radical anion and Cu(I), which may be reoxidated by O(2) to form Cu(II) with hydroxyl radical generation. In brief, the formation of the hydroxyl radical and the Cu(II)/Cu(I) redox cycle play a key role in inducing DNA damage. In this process, Pice demonstrated pro-oxidant properties. Oxidative product(s) of Pice, semiquinone, was formed and Cu(I) was reoxidized to Cu(II). The redox cycling of copper generated reactive oxygen species, which induced DNA cleavage, the hallmark of cell apoptosis. The mechanism of DNA breakage induced by Pice-Cu(II) may be a significant pathway through which cancer cells are killed.
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Affiliation(s)
- Zhensheng Li
- College of Biomedical Engineering and Medical Imaging, Third Military Medical University, Chongqing 400038, P.R. China
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30
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Kim JE, Kim HJ, Pandit S, Chang KW, Jeon JG. Inhibitory effect of a bioactivity-guided fraction from Rheum undulatum on the acid production of Streptococcus mutans biofilms at sub-MIC levels. Fitoterapia 2010; 82:352-6. [PMID: 21059383 DOI: 10.1016/j.fitote.2010.11.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 11/02/2010] [Accepted: 11/02/2010] [Indexed: 11/16/2022]
Abstract
Rheum undulatum root has been used traditionally in Korea for the treatment of dental diseases. The purpose of this study was to separate a fraction from R. undulatum showing anti-acid production activity against Streptococcus mutans biofilms and identify the main components in that fraction. Methanol extract of R. undulatum root and its fractions were prepared. To select a fraction exhibiting anti-acid production activity, suspension glycolytic pH-drop assay was performed. Among the fractions tested, dichloromethane fraction exhibited the strongest activity in a dose-dependent manner. To examine the effect of the selected fraction on the anti-acid production of S. mutans biofilms, 74 h old S. mutans biofilms were used. The selected fraction reduced the initial rate of acid production of S. mutans biofilms at sub-minimum inhibitory concentration (MIC) levels. HPLC qualitative analysis of the selected fraction indicated that the presence of anthraquinone derivatives, such as aloe-emodin, emodin, chrysophanol and physcion, as main components.
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Affiliation(s)
- Jeong-Eun Kim
- Department of Preventive Dentistry, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea
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31
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Matsui Y, Sugiyama K, Kamei M, Takahashi T, Suzuki T, Katagata Y, Ito T. Extract of passion fruit (Passiflora edulis) seed containing high amounts of piceatannol inhibits melanogenesis and promotes collagen synthesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:11112-11118. [PMID: 20822151 DOI: 10.1021/jf102650d] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The effect of passion fruit, the fruit of Passiflora edulis , on melanin inhibition and collagen synthesis was studied using cultured human melanoma and fibroblast cells. Passion fruit was divided into three parts, rind (PF-R), pulp (PF-P), and seed (PF-S), and each part was extracted using 80% ethanol. The concentration of polyphenols was higher in PF-S than in PF-R or PF-P. Treatment of melanoma cells with PF-S led to inhibition of melanogenesis. In addition, the production of total soluble collagen was elevated in dermal fibroblast cells cultured in the presence of PF-S. PF-R and PF-P did not yield these effects. Furthermore, the removal of polyphenols from PF-S led to the abolishment of the effects described above. We discovered that piceatannol (3,4,3',5'-tetrahydroxy-trans-stilbene) is present in passion fruit seeds in large amounts and that this compound is the major component responsible for the PF-S effects observed on melanogenesis and collagen synthesis.
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Affiliation(s)
- Yuko Matsui
- Research Institute, Morinaga and Company, Limited, 2-1-1 Shimosueyoshi, Tsurumi-ku, Yokohama 230-8504, Japan
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Fang JG, Lu M, Ma LP, Yang L, Wu LM, Liu ZL. Protective Effects of Resveratrol and its Analogues against Free Radical-Induced Oxidative Hemolysis of Red Blood Cells†. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20020201126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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33
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Chong W, Feng XY, Zhen GZ, Dan L, Yue D. Inhibition of Mast Cell Degranulation by Saponins from Gleditsia Sinensis- Structure-Activity Relationships. Nat Prod Commun 2009. [DOI: 10.1177/1934578x0900400608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The objective of the present study was to investigate the effects of saponins from the anomalous fruits of Gleditsia sinensis on mast cell degranulation triggered by compound 48/80 and to determine possible structure-activity relationships. Among the eleven saponins tested, four effectively inhibited β-hexosaminidase release from rat peritoneal mast cells. Studies of structure-activity relationships indicated that saponins with an aglycone of echinocystic acid instead of oleanolic acid were more effective. A sugar chain at C-3 was essential for the inhibitory effects, and a single sugar chain was the most effective. The length and structures of the oligosaccharide chain at C-28 were also critical for the activity of the compounds, and introduction of monoterpene units to the oligosaccharide chain substantially decreased the activity. To gain insight into the mechanisms responsible for preventing mast cell degranulation, the effects of saponins on intracellular cAMP were examined. After preincubation with mast cells for different times, the four active saponins significantly increased the intracellular cAMP content. These findings suggested that the four saponins might be the active constituents of the anomalous fruits of G. sinensis for antiallergic activities, and they prevented mast cell degranulation probably by elevating intracellular cAMP levels.
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Affiliation(s)
- Wang Chong
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Shennong Road 1, Nanjing, 210038, China
| | - Xia Yu Feng
- Department of Chinese Materia Medica Analysis, China Pharmaceutical University, Shennong Road 1, Nanjing, 210038, China
| | - Gao Zheng Zhen
- Department of Chinese Materia Medica Analysis, China Pharmaceutical University, Shennong Road 1, Nanjing, 210038, China
| | - Lu Dan
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Shennong Road 1, Nanjing, 210038, China
| | - Dai Yue
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Shennong Road 1, Nanjing, 210038, China
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34
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Lee YM, Lim DY, Cho HJ, Seon MR, Kim JK, Lee BY, Park JHY. Piceatannol, a natural stilbene from grapes, induces G1 cell cycle arrest in androgen-insensitive DU145 human prostate cancer cells via the inhibition of CDK activity. Cancer Lett 2009; 285:166-73. [PMID: 19487074 DOI: 10.1016/j.canlet.2009.05.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 05/08/2009] [Accepted: 05/10/2009] [Indexed: 10/20/2022]
Abstract
We have examined whether and by what mechanism piceatannol inhibits cell cycle progression in DU145 cells. The treatment of cells with piceatannol for 24h resulted in an increase in the percentage of cells in G1 phase and dose-dependent decreases in [(3)H]thymidine incorporation, as well as in protein levels of cyclin A, cyclin D1, and cyclin-dependent kinase (CDK)2 and CDK4. Piceatannol exerted no effect on the levels of p21(WAF1/CIP1) or p27(KIP1). Piceatannol reduced CDK4 and CDK2 activity. These results indicate that delaying G1 cell cycle progression contributes to the piceatannol-mediated inhibition of DU145 cell growth, which may be mediated via the inhibition of CDK activity.
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Affiliation(s)
- Yeo Myeong Lee
- Department of Food Science and Nutrition, Hallym University, Chuncheon 200-702, Republic of Korea
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35
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Kuo PL, Hsu YL. The grape and wine constituent piceatannol inhibits proliferation of human bladder cancer cells via blocking cell cycle progression and inducing Fas/membrane bound Fas ligand-mediated apoptotic pathway. Mol Nutr Food Res 2008; 52:408-18. [PMID: 18381677 DOI: 10.1002/mnfr.200700252] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Piceatannol (3,3',4,5'-Tetrahydroxy-trans-stilbene) is a polyphenol present in grapes and wine. Piceatannol is a protein kinase inhibitor that modifies multiple cellular targets exerting immunosuppressive, antileukemic, and antitumorigenic activities in several cell lines and animal models. In this study, the antiproliferative activity of piceatannol was investigated. The results showed that piceatannol inhibited the proliferation of T24 and HT1376 human bladder cancer cells by blocking cell cycle progression in the G0/G1 phase and inducing apoptosis. ELISA showed that the G0/G1 phase arrest is due to an increased in the expression of p21/WAF1. An enhancement in Fas/APO-1 and membrane-bound Fas ligand (mFasL) might be responsible for the apoptotic effect induced by piceatannol. Our study reports the novel finding, that the induction of p21/WAF1 and activity of the Fas/mFasL apoptotic system may participate in the antiproliferative activity of piceatannol in T24 and HT1376 cells.
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Affiliation(s)
- Po-Lin Kuo
- Cell Biology Laboratory, Department of Biotechnology, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan
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36
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Xiao K, Zhang HJ, Xuan LJ, Zhang J, Xu YM, Bai DL. Stilbenoids: Chemistry and bioactivities. BIOACTIVE NATURAL PRODUCTS (PART N) 2008. [DOI: 10.1016/s1572-5995(08)80032-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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37
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Zhang R, Kang KA, Piao MJ, Lee KH, Jang HS, Park MJ, Kim BJ, Kim JS, Kim YS, Ryu SY, Hyun JW. Rhapontigenin from Rheum undulatum protects against oxidative-stress-induced cell damage through antioxidant activity. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2007; 70:1155-66. [PMID: 17558811 DOI: 10.1080/15287390701252766] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The antioxidant properties of rhapontigenin and rhaponticin isolated from Rheum undulatum were investigated. Rhapontigenin was found to scavenge intracellular reactive oxygen species (ROS), the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, and hydrogen peroxide (H2O2). The radical scavenging effect of rhapontigenin was more effective than rhaponticin. Rhapontigenin protected against H2O2-induced membrane lipid peroxidation and cellular DNA damage, which are the main targets of oxidative stress-induced cellular damage. The radical scavenging activity of rhapontigenin protected Chinese hamster lung fibroblast (V79-4) cells exposed to H2O2 by inhibiting apoptosis. Rhapontigenin inhibited cell damage induced by serum starvation and was also found to increase the activity of catalase and its protein expression. Further, rhapontigenin increased phosphorylation of extracellular signal-regulated kinase (ERK) and inhibited the activity of activator protein 1 (AP-1), a redox-sensitive transcription factor. In summary, these results suggest that rhapontigenin protects V79-4 cells against oxidative damage by enhancing the cellular antioxidant activity and modulating cellular signal pathways.
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Affiliation(s)
- Rui Zhang
- Department of Biochemistry, College of Medicine and Applied Radiological Science Research Institute, Cheju National University, Jeju-si, Korea
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38
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Yoo MY, Oh KS, Lee JW, Seo HW, Yon GH, Kwon DY, Kim YS, Ryu SY, Lee BH. Vasorelaxant effect of stilbenes from rhizome extract of rhubarb (Rheum undulatum) on the contractility of rat aorta. Phytother Res 2007; 21:186-9. [PMID: 17128434 DOI: 10.1002/ptr.2042] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The vascular relaxant effect of the rhizome extract of Rheum undulatum was evaluated with isolated rat thoracic aorta preparations. The methanol extract of the rhizome induced a concentration-dependent relaxation of aortic preparations precontracted with 0.3 microm phenylephrine (EC50 value: 5.8 microg/mL). The activity-guided fractionation of the extract led to the isolation of seven hydroxystilbene components as active principles, i.e. piceatannol, resveratrol, desoxyrhapontigenin, rhapontigenin, piceid, rhaponticin and epsilon-viniferin. Of these, piceatannol, a tetrahydroxystilbene, exhibited the most potent vascular relaxant effect in rat aortic preparations (EC50 value 2.4 microm). The vasorelaxant effect of piceatannol on endothelium-intact aorta rings was diminished completely by the removal of functional endothelium or by pretreatment of the aortic tissues with N(G)-nitro-l-arginine methyl ester. These results suggest that piceatannol may be the major mediator responsible for the vasorelaxing properties of the rhizome extract of Rheum undulatum and the vasorelaxant effects of the piceatannol may be mediated via endothelium-dependent nitric oxide signaling pathway.
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Affiliation(s)
- Mi Young Yoo
- Korea Research Institute of Chemical Technology, Daejon, 305-343, Korea
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39
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Jerkovic V, Nguyen F, Nizet S, Collin S. Combinatorial synthesis, reversed-phase and normal-phase high-performance liquid chromatography elution data and liquid chromatography/positive atmospheric pressure chemical ionization tandem mass spectra of methoxylated and glycosylated resveratrol analogues. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:2456-66. [PMID: 17610243 DOI: 10.1002/rcm.3116] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Analyses of methoxylated and glycosylated stilbenes remain scarce in the literature because of the commercial unavailability of these compounds. Here a library of 22 compounds was synthesized by combinatorial chemistry. Their elution profiles were compared on three different columns (C18, C8, and silica) with those of seven commercial resveratrol analogues and two viniferins. The spectra recorded by liquid chromatography/positive atmospheric pressure chemical ionization tandem mass spectrometry (LC-APCI(+)-MS/MS) are discussed and recommendations made for easier identification of new stilbenes.
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Affiliation(s)
- Vesna Jerkovic
- Unité de Brasserie et des Industries Alimentaires, Faculté d'Ingénierie biologique, agronomique et environnementale, Université catholique de Louvain, Croix du Sud, 2 bte 7, B-1348 Louvain-la-Neuve, Belgium
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40
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Pyo SK, Son EW. Rhei Rhizoma Extracts Have Antiproliferative Properties and Differential Effects on NO Production in Macrophages. Prev Nutr Food Sci 2006. [DOI: 10.3746/jfn.2006.11.4.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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41
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Chang JK, Hsu YL, Teng IC, Kuo PL. Piceatannol stimulates osteoblast differentiation that may be mediated by increased bone morphogenetic protein-2 production. Eur J Pharmacol 2006; 551:1-9. [PMID: 17026990 DOI: 10.1016/j.ejphar.2006.08.073] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2006] [Revised: 08/22/2006] [Accepted: 08/23/2006] [Indexed: 11/19/2022]
Abstract
Piceatannol (3,3',4,5'-tetrahydroxy-trans-stilbene) is a polyphenol present in grapes and wine. By means of alkaline phosphatase activity and osteocalcin enzyme-linked immunosorbent assay (ELISA), we have shown that piceatannol exhibits a significant induction of differentiation in immortalized fetal osteoblasts (hFOB), and osteosarcoma cells (MG-63). Alkaline phosphatase and osteocalcin are phenotypic markers for early-stage differentiated osteoblasts and terminally differentiated osteoblasts, respectively, our results indicate that piceatannol stimulate osteoblast differentiation at various stages (from maturation to terminally differentiated osteoblasts). Induction of differentiation by piceatannol was associated with increased bone morphogenetic protein-2 (BMP-2) production. Addition of purified BMP-2 protein did not increase the upregulation of alkaline phosphatase activity and osteocalcin secretion by piceatannol, whereas the BMP-2 antagonist noggin blocked piceatannol and BMP-2-mediated alkaline phosphatase activity, and osteocalcin secretion enhancement, indicating that BMP-2 production is required in piceatannol-mediated osteoblast maturation and differentiation. In conclusion, piceatannol increased BMP-2 synthesis, and this effect may contribute to its action on the induction of osteoblasts maturation and differentiation, followed by an increase of bone mass. Decreases in new bone formation, followed by estrogen deficiency or various pathologic factors, may contribute to the mechanisms involved in postmenopausal osteoporosis.
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Affiliation(s)
- Jiunn-Kae Chang
- Cell Biology Laboratory, Department of Biotechnology, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan
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42
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Dai Y, But PPH, Chu LM, Chan YP. Inhibitory effects of Selaginella tamariscina on immediate allergic reactions. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2006; 33:957-66. [PMID: 16355452 DOI: 10.1142/s0192415x05003442] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The anti-allergic effects of a 70% ethanol extract from Selaginella tamariscina herb (EST) were evaluated in this study. EST given at the doses of 500 and 1000 mg/kg can inhibit mouse systemic anaphylactic shock induced by compound 48/80 in a dose-dependent manner. It can also dose-dependently block rat homologous passive cutaneous anaphylaxis and skin reactions caused by exogenous histamine and serotonin with a significant difference observed at the dose of 1000 mg/kg. In addition, EST can reduce histamine release from rat peritoneal mast cells triggered by compound 48/80 and an antigen in vitro. When incubated with rat mast cells, the extract (200 microg/ml) can significantly elevate the intracellular cAMP levels. The finding suggests that EST inhibits mast cell-dependent, immediate allergic reactions. Its effects appear to be mediated by reducing the release of vasoactive amines such as histamine from mast cells via stabilizing the cell membrane and weakening the inflammatory action of these amines. Based on these results, Selaginella tamariscina and one of its active components flavonoids may be useful as potential remedies for allergic rhinitis and other allergy-related diseases.
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Affiliation(s)
- Yue Dai
- Department of Pharmacology, China Pharmaceutical University, China.
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43
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Eisnor CR, Gossage RA, Yadav PN. Oxazoline Chemistry. Part 11: Syntheses of natural and synthetic isoflavones, stilbenes and related species via C–C bond formation promoted by a Pd–oxazoline complex. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.01.046] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Sanoh S, Kitamura S, Sugihara K, Kohta R, Ohta S, Watanabe H. Effects of Stilbene and Related Compounds on Reproductive Organs in B6C3F1/Crj Mouse. ACTA ACUST UNITED AC 2006. [DOI: 10.1248/jhs.52.613] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Seigo Sanoh
- Graduate School of Biomedical Sciences, Hiroshima University
| | - Shigeyuki Kitamura
- Graduate School of Biomedical Sciences, Hiroshima University
- Nihon Pharmaceutical University
| | - Kazumi Sugihara
- Graduate School of Biomedical Sciences, Hiroshima University
| | - Ryuki Kohta
- Graduate School of Biomedical Sciences, Hiroshima University
| | - Shigeru Ohta
- Graduate School of Biomedical Sciences, Hiroshima University
| | - Hiromitsu Watanabe
- Research Institute for Radiation Biology and Medicine, Hiroshima University
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Komatsu K, Nagayama Y, Tanaka K, Ling Y, Basnet P, Meselhy MR. Development of a High Performance Liquid Chromatographic Method for Systematic Quantitative Analysis of Chemical Constituents in Rhubarb. Chem Pharm Bull (Tokyo) 2006; 54:941-7. [PMID: 16819208 DOI: 10.1248/cpb.54.941] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
HPLC methods for the systematic determination of 30 compounds in Rhei Rhizoma (rhubarb) were developed. Using a combination of mobile phase gradient conditions and UV detection at 280 nm, all 30 compounds were separated satisfactorily with low detection limits (0.05-2 microg/ml). The developed methods provided a reliable calibration curve for each compound. By adopting these methods, the determination of 30 compounds in three kinds of rhubarb samples, derived from Rheum tanguticum, R. palmatum and R. officinale, was achieved. The constituent pattern of each rhubarb was clearly characterized through the quantitative composition of 30 major constituents of rhubarb.
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Affiliation(s)
- Katsuko Komatsu
- Division of Pharmacognosy, Department of Medicinal Resources, Institute of Natural Medicine, University of Toyama; 2630 Sugitani, Toyoma 930-0194, Japan.
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46
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Moon MK, Kang DG, Lee JK, Kim JS, Lee HS. Vasodilatory and anti-inflammatory effects of the aqueous extract of rhubarb via a NO-cGMP pathway. Life Sci 2005; 78:1550-7. [PMID: 16269157 DOI: 10.1016/j.lfs.2005.07.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2005] [Accepted: 07/15/2005] [Indexed: 10/25/2022]
Abstract
While conducting an in vitro screen of various medicinal plant extracts, an aqueous extract of rhubarb (Rheum undulatum L, AR) was found to exhibit a distinct vasorelaxant activity. AR induced a concentration-dependent relaxation of the phenylephrine-precontracted aorta. This effect disappeared with the removal of functional endothelium. Pretreatment of the aortic tissues with N(G)-nitro-L-arginine methyl ester (L-NAME), methylene blue, or 1H-[1,2,4]-oxadiazole-[4,3-alpha]-quinoxalin-1-one (ODQ) inhibited the relaxation induced by AR. Incubation of human umbilical vein endothelial cells (HUVECs) with AR increased the production of cGMP in a dose-dependent manner, but this effect was blocked by pretreatment with L-NAME and ODQ, respectively. AR treatment attenuated TNF-alpha-induced NF-kappaB p65 translocation in HUVECs in a dose-dependent manner. In addition, AR suppressed the expression levels of adhesion molecules including ICAM-1 and VCAM-1 induced by TNF-alpha in HUVECs. TNF-alpha-induced MCP-1 expression was also attenuated by the addition of AR. This attenuation was blocked by pretreatment with either L-NAME or ODQ. AR treatment inhibited cellular adhesion of U937 cells onto HUVECs induced by TNF-alpha. Taken together, the present study suggests that AR dilates vascular smooth muscle and suppresses the vascular inflammatory process via endothelium-dependent NO/cGMP signaling.
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Affiliation(s)
- Mi Kyoung Moon
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
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47
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Matsuda H, Tewtrakul S, Morikawa T, Yoshikawa M. Anti-allergic activity of stilbenes from Korean rhubarb (Rheum undulatum L.): structure requirements for inhibition of antigen-induced degranulation and their effects on the release of TNF-alpha and IL-4 in RBL-2H3 cells. Bioorg Med Chem 2005; 12:4871-6. [PMID: 15336266 DOI: 10.1016/j.bmc.2004.07.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2004] [Revised: 07/03/2004] [Accepted: 07/03/2004] [Indexed: 11/29/2022]
Abstract
Stilbenes isolated from the rhizomes of Rheum undulatum (Korean rhubarb) and the related compounds were investigated on their anti-allergic activities. The results revealed that 3,5,4'-trimethylpiceatannol exhibited the most potent inhibition against beta-hexosaminidase release as a marker of degranulation in RBL-2H3 cells with IC(50) of 2.1 microM, followed by trimethylresveratrol (IC(50)=5.1 microM). Structural requirements of stilbenes for the activity are as follows: (1) The oxygen functions (-OCH(3), -OH), especially methoxyl groups, are essential and their positions on aromatic rings are important for the activity; (2) the alpha-beta double bond increased the activity; (3) the glycoside moiety dramatically decreased the activity; and (4) the substitution group at the 3'-position in trimethylresveratrol (3,5,4'-trimethoxystilbene) was preferably OH>H>OCH(3) for the activity. Several active stilbenes (piceatannol, 3,5,4'-trimethylpiceatannol, resveratrol, trimethylresveratrol) also inhibited ionomycin-induced beta-hexosaminidase release, suggesting that inhibition of Ca(2+) influx or degranulation mechanisms after Ca(2+) influx is important for their activities. Piceatannol, 3,5,4'-trimethylpiceatannol, resveratrol, and trimethylresveratrol also significantly inhibited antigen-induced release of TNF-alpha and IL-4 in RBL-2H3 cells.
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Affiliation(s)
- Hisashi Matsuda
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan
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48
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Dai Y, Hou LF, Chan YP, Cheng L, But PPH. Inhibition of immediate allergic reactions by ethanol extract from Plumbago zeylanica stems. Biol Pharm Bull 2005; 27:429-32. [PMID: 14993817 DOI: 10.1248/bpb.27.429] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The antiallergic properties of the 70% ethanol extract from Plumbago zeylanica stems (EPZ) were investigated in the present study. The extract (500, 1000 mg/kg, p.o.) dose-dependently inhibited systemic anaphylactic shock induced by compound 48/80 in mice, reduced homologous passive cutaneous anaphylaxis and skin reactions induced by histamine or serotonin in rats, significant differences were observed at the dose of 1000 mg/kg. In vitro, EPZ (5, 20, 50 microg/ml) concentration-dependently reduced histamine release from rat peritoneal mast cells caused by compound 48/80 and antigen. EPZ (50 microg/ml) markedly increased intracellular cAMP content of rat mast cells. These findings demonstrate that EPZ inhibits mast cell-dependent immediate allergic reactions, which is probably mediated by reducing the release of mediators such as histamine from mast cells via elevating intracellular cAMP level and weakening the inflammatory action of mediators.
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Affiliation(s)
- Yue Dai
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China.
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49
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Lee SK, Kim Y, Kim MY, Chun YJ, Kim S. Potent inhibition of recombinant human cytochrome p-450 1A1 by pentamethoxystilbene. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2004; 67:1987-2000. [PMID: 15513897 DOI: 10.1080/15287390490514642] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Previously it was reported that various hydroxystilbene compounds strongly inhibit human cytochrome P-450 1 enzymes and were postulated as candidate chemopreventive agents. In this study, the inhibitory potential of P-450 1 enzyme activities by 3,5,3,4,5-pentamethoxystilbene (PMS), a synthetic stilbene compound, was evaluated with the Escherichia coli (E. coil) membranes of recombinant human cytochrome P-450 1A1, 1A2, or 1B1 coexpressed with human NADPH-P-450 reductase. PMS produced a significant inhibition of ethoxyresorufin O-deethylation (EROD) activities with IC50 values of 0.14, 934, and 3.2 M for 1A1, 1A2, and 1B1, respectively. PMS did not significantly inhibit EROD activities in human liver microsomes. To elucidate the mechanism of inhibition by PMS, kinetic studies were performed. Analysis of the mode of inhibition indicated a mixed-type inhibition of P-450 1A1. The inhibition of P-450 1A1-mediated EROD activity by PMS was not irreversible-mechanism based. The loss of EROD activity of P-450 1A1 with PMS was blocked by trapping agents such as glutathione, N-acetylcysteine, or dithiothreitol. Moreover, PMS significantly suppressed P-450 1A1-mediated EROD activity and P-450 1A1 gene expression in HepG2 cells induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Taken together, the results suggested that PMS is a potent and selective inhibitor of human P-450 1A1 and may be considered for use as a cancer chemopreventive agent in humans.
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50
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Sanoh S, Kitamura S, Sugihara K, Fujimoto N, Ohta S. Estrogenic Activity of Stilbene Derivatives. ACTA ACUST UNITED AC 2003. [DOI: 10.1248/jhs.49.359] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Seigo Sanoh
- Graduate School of Biomedical Sciences, Hiroshima University
| | | | - Kazumi Sugihara
- Graduate School of Biomedical Sciences, Hiroshima University
| | - Nariaki Fujimoto
- Research Institute for Radiation Biology and Medicine, Hiroshima University
| | - Shigeru Ohta
- Graduate School of Biomedical Sciences, Hiroshima University
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