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Rodeiro I, Cancino L, González JE, Morffi J, Garrido G, González RM, Nuñez A, Delgado R. Evaluation of the genotoxic potential of Mangifera indica L. extract (Vimang), a new natural product with antioxidant activity. Food Chem Toxicol 2006; 44:1707-13. [PMID: 16857303 DOI: 10.1016/j.fct.2006.05.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2006] [Accepted: 05/19/2006] [Indexed: 11/20/2022]
Abstract
Mangifera indica L. extract (Vimang) consists of a defined mixture of components (polyphenols, terpenoids, steroids, fatty acids and microelements). It contains a variety of polyphenols, phenolic esters, flavan-3-ols and a xanthone (mangiferin), as main component. This extract has antioxidant action, antitumor and immunemodulatory effects proved in experimental models in both in vitro and in vivo assays. The present study was performed to investigate the genotoxicity potential activity of Vimang assessed through different tests: Ames, Comet and micronucleus assays. Positive and negative controls were included in each experimental series. Histidine requiring mutants of Salmonella typhimurium TA1535, TA1537, TA1538, TA98, TA100 and TA102 strains for point-mutation tests and in vitro micronucleus assay in primary human lymphocytes with and without metabolic activation were performed. In addition, genotoxic effects were evaluated on blood peripheral lymphocytes of NMRI mice of both sexes, which were treated during 2 days with intraperitoneal doses of M. indica L. extract (50-150 mg/kg). The observed results permitted to affirm that Vimang (200-5,000 microg/plate) did not increase the frequency of reverse mutations in the Ames test in presence or not of metabolic activation. Results of Comet assay showed that the extract did not induce single strand breaks or alkali-labile sites on blood peripheral lymphocytes of treated animals compared with controls. On the other hand, the results of the micronucleus studies (in vitro and in vivo) showed Vimang induces cytotoxic activity, determined as cell viability or PCE/NCE ratio, but neither increased the frequency of micronucleated binucleate cells in culture of human lymphocytes nor in mice bone marrow cells under our experimental conditions. The positive control chemicals included in each experiment induced the expected changes. The present results indicate that M. indica L. extract showed evidences of light cytotoxic activity but did not induce a mutagenic or genotoxic effects in the battery of assays used.
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Affiliation(s)
- I Rodeiro
- Laboratory of Pharmacology, Department of Biomedical Investigations, Center of Pharmaceutical Chemistry, 200 and 21, Atabey, P.O. Box 16042, Havana, Cuba.
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52
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Sá-Nunes A, Rogerio AP, Medeiros AI, Fabris VE, Andreu GP, Rivera DG, Delgado R, Faccioli LH. Modulation of eosinophil generation and migration by Mangifera indica L. extract (Vimang). Int Immunopharmacol 2006; 6:1515-23. [PMID: 16846846 DOI: 10.1016/j.intimp.2006.04.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2005] [Revised: 01/14/2006] [Accepted: 04/12/2006] [Indexed: 11/29/2022]
Abstract
The effects of Vimang, an aqueous extract of the stem bark of Mangifera indica L. (Anacardiaceae), on cell migration in an experimental model of asthma was investigated. In vivo treatment of Toxocara canis-infected BALB/c mice for 18 days with 50 mg/kg Vimang reduced eosinophil migration into the bronchoalveolar space and peritoneal cavity. Also, eosinophil generation in bone marrow and blood eosinophilia were inhibited in infected mice treated with Vimang. This reduction was associated with inhibition of IL-5 production in serum and eotaxin in lung homogenates. In all these cases the effects of Vimang were more selective than those observed with dexamethasone. Moreover, Vimang treatment is not toxic for the animals, as demonstrated by the normal body weight increase during infection. These data confirm the potent anti-inflammatory effect of Vimang and support its potential use as an alternative therapeutic drug to the treatment of eosinophilic disorders including those caused by nematodes and allergic diseases.
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Affiliation(s)
- Anderson Sá-Nunes
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-903 SP, Brazil.
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Hernández P, Delgado R, Walczak H. Mangifera indica L. extract protects T cells from activation-induced cell death. Int Immunopharmacol 2006; 6:1496-505. [PMID: 16846844 DOI: 10.1016/j.intimp.2006.03.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Revised: 03/17/2006] [Accepted: 03/31/2006] [Indexed: 01/02/2023]
Abstract
The aqueous stem bark extract of Mangifera indica L. (Vimang) has been reported to have antioxidant properties. AIDS is characterized by up-regulation of CD95 ligand (CD95L) expression and enhancement of activation-induced cell death (AICD). Recent studies demonstrate oxidative signals combined with simultaneous calcium (Ca(2+)) influx into the cytosol are required for induction of CD95L expression. In this study we show that M. indica extract attenuated anti-CD3-induced accumulation of reactive oxygen species (ROS) and intracellular free Ca(2+) and consequently, downregulates CD95L mRNA expression and CD95-mediated AICD. In addition, TCR triggering caused an elevation in the antioxidant enzyme manganous superoxide dismutase (Mn-SOD) and the increase in c-Jun N-terminal kinase (JNK) phosphorylation, both effects being prevented by M. indica extract. We provide a number of evidences regarding how M. indica extract enhance T-cell survival by inhibiting AICD, a finding associated with a decrease in oxidative stress generated through the TCR signaling pathway in activated T cells.
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Affiliation(s)
- Patricia Hernández
- Department of Biomedical Research, Center of Pharmaceutical Chemistry, PO Box 16042, Atabey, Playa, Havana, Cuba.
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Rodríguez J, Di Pierro D, Gioia M, Monaco S, Delgado R, Coletta M, Marini S. Effects of a natural extract from Mangifera indica L, and its active compound, mangiferin, on energy state and lipid peroxidation of red blood cells. Biochim Biophys Acta Gen Subj 2006; 1760:1333-42. [PMID: 16860486 DOI: 10.1016/j.bbagen.2006.04.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2005] [Revised: 04/11/2006] [Accepted: 04/18/2006] [Indexed: 12/16/2022]
Abstract
Following oxidative stress, modifications of several biologically important macromolecules have been demonstrated. In this study we investigated the effect of a natural extract from Mangifera indica L (Vimang), its main ingredient mangiferin and epigallocatechin gallate (EGCG) on energy metabolism, energy state and malondialdehyde (MDA) production in a red blood cell system. Analysis of MDA, high energy phosphates and ascorbate was carried out by high performance liquid chromatography (HPLC). Under the experimental conditions, concentrations of MDA and ATP catabolites were affected in a dose-dependent way by H2O2. Incubation with Vimang (0.1, 1, 10, 50 and 100 microg/mL), mangiferin (1, 10, 100 microg/mL) and EGCG (0.01, 0.1, 1, 10 microM) significantly enhances erythrocyte resistance to H2O2-induced reactive oxygen species production. In particular, we demonstrate the protective activity of these compounds on ATP, GTP and total nucleotides (NT) depletion after H2O2-induced damage and a reduction of NAD and ADP, which both increase because of the energy consumption following H2O2 addition. Energy charge potential, decreased in H2O2-treated erythrocytes, was also restored in a dose-dependent way by these substances. Their protective effects might be related to the strong free radical scavenging ability described for polyphenols.
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Affiliation(s)
- Janet Rodríguez
- Department of Biomedical Research, Center of Pharmaceutical Chemistry, 200 y 21 Atabey Playa, P.O. Box 16042, Havana, Cuba
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55
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Dar A, Faizi S, Naqvi S, Roome T, Zikr-ur-Rehman S, Ali M, Firdous S, Moin ST. Analgesic and antioxidant activity of mangiferin and its derivatives: the structure activity relationship. Biol Pharm Bull 2005; 28:596-600. [PMID: 15802793 DOI: 10.1248/bpb.28.596] [Citation(s) in RCA: 143] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mangiferin, 2-beta-D-glucopyranosyl-1,3,6,7-tetrahydroxy-9H-xanthen-9-one, obtained directly from methanolic extracts of Bombax ceiba leaves in substantial amounts demonstrated strong antioxidant activity (EC(50) 5.8+/-0.96 mug/ml or 13.74 muM) using DPPH assay comparable to rutin, commonly used as antioxidant for medical purposes. The acetyl and cinnamoyl derivatives were found to be less active than mangiferin whereas, methyl and 3,6,7-trimethylether tetraacetate derivatives were inactive implying that for antioxidant activity, free hydroxyl groups and catechol moiety are essential. Moreover, mangiferin showed hepatoprotective activity against carbon tetrachloride induced liver injury further supporting the free radical scavenging property in the in vivo system. Additionally, plant extracts and mangiferin failed to exhibit acute anti-inflammatory activity whereas, it displayed significant analgesic effect in acetic acid-induced writhing and hot plate tests in mice. Using naloxone, it was revealed that plant extracts induced analgesia was independent of opioid receptor, whereas, mangiferin demonstrated significant interaction with it at peripheral site with a slight contribution at the neuronal level.
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Affiliation(s)
- Ahsana Dar
- H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.
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56
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Calixto JB. Twenty-five years of research on medicinal plants in Latin America: a personal view. JOURNAL OF ETHNOPHARMACOLOGY 2005; 100:131-4. [PMID: 16006081 DOI: 10.1016/j.jep.2005.06.004] [Citation(s) in RCA: 175] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/06/2005] [Indexed: 05/03/2023]
Abstract
In this short article, I have discussed (on the base of the Web of Science data base search), the expressive progress of Latin American scientific production in peer review journals in the field of plants over the last 25 years. In addition, some effort has been made towards discussing the relevance of medicinal plants for the development of standardized phytomedicines with proof of quality, safety and efficacy, and a few examples of success have been briefly mentioned.
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Affiliation(s)
- João B Calixto
- Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88049-900 Florianópolis, SC, Brazil.
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Garrido G, Blanco-Molina M, Sancho R, Macho A, Delgado R, Muñoz E. An aqueous stem bark extract of Mangifera indica (Vimang) inhibits T cell proliferation and TNF-induced activation of nuclear transcription factor NF-kappaB. Phytother Res 2005; 19:211-5. [PMID: 15934029 DOI: 10.1002/ptr.1656] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A commercial aqueous stem bark extract of Mangifera indica L. (Vimang) has been reported to have antiinflammatory, immunomodulatory and antioxidant activities. The molecular basis for these diverse properties is still unknown. This study shows that a stem bark extract of M. indica inhibits early and late events in T cell activation, including CD25 cell surface expression, progression to the S-phase of the cell cycle and proliferation in response to T cell receptor (TCR) stimulation. Moreover, the extract prevented TNFalpha-induced IkappaBalpha degradation and the binding of NF-kappaB to the DNA. This study may help to explain at the molecular level some of the biological activities attributed to the aqueous stem bark extract of M. indica (Vimang).
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Affiliation(s)
- Gabino Garrido
- Laboratorio de Farmacología, Centro de Química Farmacéutica, Apartado Postal 16042, Atabey, Playa, Ciudad de La Habana, Cuba.
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Teixeira M, Cerqueira F, Barbosa CM, Nascimento MSJ, Pinto M. Improvement of the inhibitory effect of xanthones on NO production by encapsulation in PLGA nanocapsules. J Drug Target 2005; 13:129-35. [PMID: 15823964 DOI: 10.1080/10611860400027717] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
For the first time the inhibitory effect of xanthone and 3-methoxyxanthone on nitric oxide (NO) production by IFN-gamma/LPS activated J774 macrophage cell line is reported. A remarkable improvement of this effect promoted by encapsulation of these compounds in nanocapsules of poly (DL-lactide-co-glycolide) (PLGA) is also demonstrated. A weak inhibitory effect of 3.6% on NO production by activated macrophages was observed for xanthone at the highest studied concentration (100 microM). This effect was slightly higher for 3-methoxyxanthone at the same concentration, producing a reduction of 16.5% on NO production. In contrast, equivalent concentrations of xanthone and 3-methoxyxanthone incorporated in nanocapsules produced a significant decrease on NO production of 91.8 and 80.0%, respectively. Empty nanocapsules also exhibited a slight NO inhibitory activity, which may be due to the presence of soybean lecithin in the composition of the nanosystems. The viability of the macrophages was not affected either by free or nanoencapsulated xanthones. Fluorescence microscopy analysis confirmed that a phagocytic process was involved in the macrophage uptake of xanthone- and 3-methoxyxanthone-loaded PLGA nanocapsules. Phagocytosis might be the main mechanism responsible for the enhancement of the intracellular delivery of both compounds and consequently for the improvement of their biological effect.
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Affiliation(s)
- Maribel Teixeira
- CEQOFFUP--Centro de Estudos de Química Orgânica, Fitoquímica e Farmacologia da Universidade do Porto, Faculdade de Farmácia, Universidade do Porto, R. Aníbal Cunha, 164, 4050-047 Porto, Portugal
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59
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Leiro J, García D, Arranz JA, Delgado R, Sanmartín ML, Orallo F. An Anacardiaceae preparation reduces the expression of inflammation-related genes in murine macrophages. Int Immunopharmacol 2005; 4:991-1003. [PMID: 15222974 DOI: 10.1016/j.intimp.2004.02.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2003] [Revised: 01/19/2004] [Accepted: 02/05/2004] [Indexed: 12/31/2022]
Abstract
This study investigated the effects of an aqueous extract of the stem bark of Mangifera indica L. (Anacardiaceae; Vimang), which contains a defined mixture of components including polyphenols (principally mangiferin, MA), triterpenes, phytosteroids, fatty acids and microelements, on expression of inflammation mediators in inflammatory murine macrophages after stimulation in vitro with lipopolysaccharide (LPS) and interferon-gamma (IFN-gamma). In vitro treatment with Vimang at 4 microg/ml reduced levels of NOS-2 mRNA and NOS-2, while treatment at 40 microg/ml also reduced levels of COX-2 mRNA, COX-2, and prostaglandin E2 (PGE2). Results suggested that MA is involved in these effects. In vitro treatment with Vimang at 40 microg/ml also inhibited mRNA levels of the proinflammatory cytokines interleukin 1beta (IL-1beta), tumor necrosis factor alpha (TNF-alpha) and colony-stimulating factor (GM-CSF), but did not affect mRNA levels of IL-6 or tumor growth factor-beta (TGF-beta). Extracellular release of TNF-alpha by inflammatory macrophages was inhibited by in vitro treatment with Vimang at the same concentrations that showed inhibition of TNF-alpha mRNA levels. The inhibition of TNF-alpha production appears to be at least partially attributable to MA. Vimang at 4 microg/ml decreased mRNA levels of nuclear factor-kappaB (NF-kappaB) but did not affect expression of the NF-kappaB inhibitor (IkappaB). These data indicate that the potent anti-inflammatory effects of Vimang are due to selective modulation of the expression of inflammation-related genes, leading to attenuation of macrophage activation.
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Affiliation(s)
- J Leiro
- Laboratorio de Parasitología, Instituto de Investigaciones y Análisis Alimentarios, Universidad de Santiago de Compostela, Constantino Candeira, sn, 15782 Santiago de Compostela, Spain.
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60
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Jagetia GC, Baliga MS. Radioprotection by mangiferin in DBAxC57BL mice: a preliminary study. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2005; 12:209-215. [PMID: 15830843 DOI: 10.1016/j.phymed.2003.08.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The radioprotective effects of various concentrations (0, 0.25, 0.5, 1, 2, 5, 10, 17.5, 25, 50, 75 and 100 mg/kg b.wt.) of mangiferin (MGN) was studied in the DBAxC57BL mice whole body exposed to 10 Gy of gamma-irradiation. Treatment of mice with different doses of MGN, one hour before irradiation reduced the symptoms of radiation sickness and delayed the onset of mortality when compared with the non-drug treated irradiated controls. The radioprotective action of MGN increased in a dose dependent manner up to 2mg/kg and declined thereafter. The highest radioprotective effect was observed at 2mg/kg MGN, where greatest number of animals survived against the radiation-induced mortality. The administration of 0.5, 1, 2, 5, 10 and 17.5 mg/kg MGN reduced the radiation-induced gastrointestinal death as evident by a greater number of survivors up to 10 days in this group when compared with the DDW + 10 Gy irradiation group. A similar effect of MGN was observed for the radiation-induced bone marrow deaths also. Our study demonstrates that mangiferin, a gluosylxanthone, present in the Mangifera indica protected mice against the radiation-induced sickness and mortality and the optimum protective dose of 2mg/kg was 1/200 of LD50 dose (400 mg/kg) of MGN. The administration of 400 mg/kg MGN induced 50% mortality, therefore LD50 of the drug was considered to be 400 mg/kg.
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Affiliation(s)
- G C Jagetia
- Department of Radiobiology, Kasturba Medical College Manipal, Karnataka 576104, India.
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61
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Beltrán AE, Alvarez Y, Xavier FE, Hernanz R, Rodriguez J, Núñez AJ, Alonso MJ, Salaices M. Vascular effects of the Mangifera indica L. extract (Vimang). Eur J Pharmacol 2005; 499:297-305. [PMID: 15381052 DOI: 10.1016/j.ejphar.2004.07.073] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2004] [Accepted: 07/13/2004] [Indexed: 11/23/2022]
Abstract
The effects of the Mangiferia indica L. (Vimang) extract, and mangiferin (a C-glucosylxanthone of Vimang) on the inducible isoforms of cyclooxygenase (cyclooxygenase-2) and nitric oxide synthase (iNOS) expression and on vasoconstrictor responses were investigated in vascular smooth muscle cells and mesenteric resistance arteries, respectively, from Wistar Kyoto (WKY) and spontaneously hypertensive (SHR) rats. Vimang (0.5-0.1 mg/ml) and mangiferin (0.025 mg/ml) inhibited the interleukin-1beta (1 ng/ml)-induced iNOS expression more in SHR than in WKY, and cyclooxygenase-2 expression more in WKY than in SHR. Vimang (0.25-1 mg/ml) reduced noradrenaline (0.1-30 microM)- and U46619 (1 nM-30 microM)- but not KCl (15-70 mM)-induced contractions. Mangiferin (0.05 mg/ml) did not affect noradrenaline-induced contraction. In conclusion, the antiinflammatory action of Vimang would be related with the inhibition of iNOS and cyclooxygenase-2 expression, but not with its effect on vasoconstrictor responses. Alterations in the regulation of both enzymes in hypertension would explain the differences observed in the Vimang effect.
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MESH Headings
- 15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid/pharmacology
- Animals
- Blotting, Western
- Cells, Cultured
- Cyclooxygenase 2
- Dose-Response Relationship, Drug
- In Vitro Techniques
- Isoenzymes/metabolism
- Male
- Mangifera
- Mesenteric Arteries/drug effects
- Mesenteric Arteries/physiology
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/enzymology
- Nitric Oxide Synthase/metabolism
- Nitric Oxide Synthase Type II
- Norepinephrine/pharmacology
- Plant Extracts/pharmacology
- Potassium Chloride/pharmacology
- Prostaglandin-Endoperoxide Synthases/metabolism
- Rats
- Rats, Inbred SHR
- Rats, Inbred WKY
- Vasoconstriction/drug effects
- Xanthones/pharmacology
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Affiliation(s)
- Amada E Beltrán
- Depto. de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/ Arzobispo Morcillo 4, Madrid 28029, Spain
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62
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Sarkar A, Sreenivasan Y, Ramesh GT, Manna SK. β-d-Glucoside Suppresses Tumor Necrosis Factor-induced Activation of Nuclear Transcription Factor κB but Potentiates Apoptosis. J Biol Chem 2004; 279:33768-81. [PMID: 15161907 DOI: 10.1074/jbc.m403424200] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mangiferin, a natural polyphenol is known to exhibit anti-inflammatory, antioxidant, and antiviral effects. However the molecular mechanism underlying these effects has not been well characterized. Because NF-kappaB plays an important role in these processes, it is possible that mangiferin modulates NF-kappaB activation. Our results show that mangiferin blocks tumor necrosis factor (TNF)-induced NF-kappaB activation and NF-kappaB-dependent genes like ICAM1 and COX2. The effect was mediated through inhibition of IKK activation and subsequent blocking of phosphorylation and degradation of IkappaBalpha. In addition, mangiferin inhibits TNF-induced p65 phosphorylation as well as translocation to the nucleus and also inhibits NF-kappaB activation induced by other inflammatory agents like PMA, ceramide, and SA-LPS. Mangiferin, similar to the other known antioxidants, NAC and PDTC, inhibits TNF-induced reactive oxygen intermediate (ROI) generation. Since intracellular glutathione (GSH) levels are known to modulate NF-kappaB levels, we measured the levels of GSH. Mangiferin enhances glutathione level by almost 2-fold more than other anti-oxidants, and at the same time it decreases the levels of GSSG and increases the activity of catalase. Depletion of GSH by buthionine sulfoximine led to a significant reversal of mangiferin effect. Hence mangiferin with its ability to inhibit NF-kappaB and increase the intracellular GSH levels may prove to be a potent drug for anti-inflammatory and antioxidant therapy. Mangiferin-mediated down-regulation of NF-kappaB also potentiates chemotherapeutic agent-mediated cell death, suggesting a role in combination therapy for cancer.
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Affiliation(s)
- Abira Sarkar
- Centre for DNA Fingerprinting & Diagnostics, Laboratory of Immunology, Nacharam, Hyderabad 500 076, India
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63
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Leiro J, Arranz JA, Yáñez M, Ubeira FM, Sanmartín ML, Orallo F. Expression profiles of genes involved in the mouse nuclear factor-kappa B signal transduction pathway are modulated by mangiferin. Int Immunopharmacol 2004; 4:763-78. [PMID: 15135318 DOI: 10.1016/j.intimp.2004.03.002] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2003] [Revised: 03/01/2004] [Accepted: 03/02/2004] [Indexed: 01/03/2023]
Abstract
The polyphenol mangiferin (MA) has been shown to have various effects on macrophage function, including inhibition of phagocytic activity and of free radical production. To further characterize the immunomodulatory activity of MA, this study investigated its effects on expression by activated mouse macrophages of diverse genes related to the NF-kappaB signaling pathway, using a DNA hybridization array containing 96 NF-kappaB-related genes and on cytokine levels using a cytokine protein array. MA at 10 microM significantly inhibited the expression of (a) two genes of the Rel/NF-kappaB/IkappaB family, RelA and RelB (=I-rel), indicating an inhibitory effect on NF-kappaB-mediated signal transduction; (b) TNF receptor-associated factor 6 (Traf6), indicating probable blockage of activation of the NF-kappaB pathway by lipopolysaccharide (LPS), tumor necrosis factor (TNF), and interleukin 1 (IL-1); (c) other proteins involved in responses to TNF and in apoptotic pathways triggered by DNA damage, including the TNF receptor (TNF-R), the TNF-receptor-associated death domain (TRADD), and the receptor interacting protein (RIP); (d) the extracellular ligand IL-1alpha, again indicating likely interference with responses to IL-1; (e) the pro-inflammatory cytokines IL-1, IL-6, IL-12, TNF-alpha and RANTES (CCL5), and cytokines produced by monocytes and macrophages, including granulocyte colony-stimulating factor (G-CSF), granulocyte-macrophage colony-stimulating factor (GM-CSF), macrophage colony-stimulating factor (M-CSF); (f) other toll-like receptor proteins (in addition to Traf6), including JNK1, JNK2 and Tab1; (g) Scya2 (small inducible cytokine A2=monocyte chemoattractant protein 1); and (h) various intracellular adhesion molecules (ICAMs), and the vascular cell adhesion molecule VCAM-1, which is locally increased in atheromas. The inhibition of JNK1, together with stimulation of c-JUN (i.e. the Jun oncogene) and the previously reported superoxide-scavenging activity of MA, suggests that MA may protect cells against oxidative damage and mutagenesis. Taken together, these results indicate that MA modulates the expression of a large number of genes that are critical for the regulation of apoptosis, viral replication, tumorogenesis, inflammation and various autoimmune diseases, and raise the possibility that it may be of value in the treatment of inflammatory diseases and/or cancer.
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Affiliation(s)
- José Leiro
- Laboratorio de Parasitología, Instituto de Investigación y Análisis Alimentarios, Universidad de Santiago de Compostela, C/ Constantino Candeira s/n, 15782 Santiago de Compostela, La Coruña, Spain.
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64
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García D, Escalante M, Delgado R, Ubeira FM, Leiro J. Anthelminthic and antiallergic activities of Mangifera indica L. stem bark components Vimang and mangiferin. Phytother Res 2004; 17:1203-8. [PMID: 14669257 DOI: 10.1002/ptr.1343] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study investigated the antiallergic and anthelmintic properties of Vimang (an aqueous extract of Mangifera indica family stem bark) and mangiferin (the major polyphenol present in Vimang) administered orally to mice experimentally infected with the nematode, Trichinella spiralis. Treatment with Vimang or mangiferin (500 or 50 mg per kg body weight per day, respectively) throughout the parasite life cycle led to a significant decline in the number of parasite larvae encysted in the musculature; however, neither treatment was effective against adults in the gut. Treatment with Vimang or mangiferin likewise led to a significant decline in serum levels of specific anti-Trichinella IgE, throughout the parasite life cycle. Finally, oral treatment of rats with Vimang or mangiferin, daily for 50 days, inhibited mast cell degranulation as evaluated by the passive cutaneous anaphylaxis test (sensitization with infected mouse serum with a high IgE titre, then stimulation with the cytosolic fraction of T. spiralis muscle larvae). Since IgE plays a key role in the pathogenesis of allergic diseases, these results suggest that Vimang and mangiferin may be useful in the treatment of diseases of this type.
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Affiliation(s)
- D García
- Laboratorio de Farmacología, Centro de Química Farmacéutica, Havana, Cuba
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Leiro J, Alvarez E, Arranz JA, Laguna R, Uriarte E, Orallo F. Effects of cis-resveratrol on inflammatory murine macrophages: antioxidant activity and down-regulation of inflammatory genes. J Leukoc Biol 2004; 75:1156-65. [PMID: 14982945 DOI: 10.1189/jlb.1103561] [Citation(s) in RCA: 152] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
This study investigated for the first time the effects of the cis isomer of resveratrol (c-RESV) on the responses of inflammatory murine peritoneal macrophages, namely on the production of reactive oxygen species (ROS) and reactive nitrogen species (RNS) during the respiratory burst; on the biosynthesis of other mediators of inflammation such prostaglandins; and on the expression of inflammatory genes such as inducible nitric oxide synthase (NOS)-2 and inducible cyclooxygenase (COX)-2. Treatment with 1-100 microM c-RESV significantly inhibited intracellular and extracellular ROS production, and c-RESV at 10-100 microM significantly reduced RNS production. c-RESV at 1-100 microM was ineffective for scavenging superoxide radicals (O(2)(.-)), generated enzymatically by a hypoxanthine (HX)/xanthine oxidase (XO) system and/or for inhibiting XO activity. However, c-RESV at 10-100 microM decreased nicotinamide adenine dinucleotide/nicotinamide adenine dinucleotide phosphate (NADH/NADPH) oxidase activity in macrophage homogenates. c-RESV at 100 microM decreased NOS-2 and COX-2 mRNA levels in lipopolysaccharide (LPS) interferon gamma (IFN-gamma)-treated macrophages. At 10-100 microM, c-RESV also significantly inhibited NOS-2 and COX-2 protein synthesis and decreased prostaglandin E(2) (PGE(2)) production. These results indicate that c-RESV at micromolar concentrations significantly attenuates several components of the macrophage response to proinflammatory stimuli (notably, production of O(2)(.-)(-) and of the proinflammatory mediators NO(.-) and PGE(2)).
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Affiliation(s)
- José Leiro
- Facultad de Farmacia, Universidad de Santiago de Compostela, Campus Universitario Sur, E-15782 Santiago de Compostela (La Coruña), Spain
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Leiro JM, Alvarez E, Arranz JA, Siso IG, Orallo F. In vitro effects of mangiferin on superoxide concentrations and expression of the inducible nitric oxide synthase, tumour necrosis factor-alpha and transforming growth factor-beta genes. Biochem Pharmacol 2003; 65:1361-71. [PMID: 12694877 DOI: 10.1016/s0006-2952(03)00041-8] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This study investigated the effects of the natural polyphenol mangiferin (MA) on superoxide anion (O(2)(-)) production, xanthine oxidase (XO) activity, vascular contractility, inducible nitric oxide synthase (iNOS) mRNA levels, tumour necrosis factor-alpha (TNF-alpha) mRNA levels, and tumour growth factor-beta (TGF-beta) mRNA levels. O(2)(-) was generated by the hypoxanthine-xanthine oxidase (HX-XO) and phenazine methosulphate (PMS)-NADH systems. XO activity was determined by measurement of uric acid production with xanthine as substrate. Vascular contraction experiments were performed with intact rat aortic rings. iNOS, TNF-alpha and TGF-beta gene expression in rat macrophages stimulated in vivo with 3% thioglycollate and in vitro with 100 ng/mL lipopolysaccharide and 10U/mL of interferon-gamma were evaluated semiquantitatively by the retrotranscriptase-polymerase chain reaction. MA at 10-100 microM, like the known O(2)(-) scavenger superoxide dismutase (1U/mL), scavenged O(2)(-) produced by the HX/XO and PMS-NADH systems. By contrast MA at 1-100 microM, unlike allopurinol (10 microM), was unable to inhibit XO activity. MA at 1-100 microM did not modify resting tone or the contractile responses elicited by 1 microM phenylephrine or 1 microM phorbol 12-myristate 13-acetate in rat aorta. MA at 1-100 microM, like dexamethasone (100 microM), decreased iNOS mRNA levels in activated macrophages. At 100 microM, MA also reduced TNF-alpha mRNA levels, but increased TGF-beta mRNA levels. These results thus indicate that MA is an O(2)(-) scavenger and that it inhibits expression of the iNOS and TNF-alpha genes, suggesting that it may be of potential value in the treatment of inflammatory and/or neurodegenerative disorders. In addition, the finding that MA enhances TGF-beta gene expression suggests that this polyphenol might also be of value in the prevention of cancer, autoimmune disorders, atherosclerosis and coronary heart disease.
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Affiliation(s)
- José Manuel Leiro
- Departamento de Microbiología y Parasitología, Universidad de Santiago de Compostela, Spain.
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