51
|
Xiao J, Capanoglu E, Jassbi AR, Miron A. Advance on the FlavonoidC-glycosides and Health Benefits. Crit Rev Food Sci Nutr 2015; 56 Suppl 1:S29-45. [PMID: 26462718 DOI: 10.1080/10408398.2015.1067595] [Citation(s) in RCA: 222] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
52
|
Glossogyne tenuifolia Extract Inhibits TNF-α-Induced Expression of Adhesion Molecules in Human Umbilical Vein Endothelial Cells via Blocking the NF-kB Signaling Pathway. Molecules 2015; 20:16908-23. [PMID: 26393541 PMCID: PMC6332270 DOI: 10.3390/molecules200916908] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 09/03/2015] [Accepted: 09/10/2015] [Indexed: 11/30/2022] Open
Abstract
Chronic inflammation plays a pivotal role in the development of atherosclerosis, where the pro-inflammatory cytokine-induced expression of endothelial adhesion molecules and the recruitment of monocytes are the crucial events leading to its pathogenesis. Glossogyne tenuifolia ethanol extract (GTE) is shown to have potent anti-inflammatory and antioxidant activities. We evaluated the effects of GTE and its major components, luteolin (lut), luteolin-7-glucoside (lut-7-g), and oleanolic acid (OA) on TNF-α-induced expression of adhesion molecules in human umbilical vein endothelial cells (HUVECs). The results demonstrated that GTE, lut, and lut-7-g attenuated the expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) in TNF-α-activated HUVECs, and inhibited the adhesion of monocytes to TNF-α-activated HUVECs. The TNF-α-induced mRNA expression of ICAM-1 and VCAM-1 was also suppressed, revealing their inhibitory effects at the transcriptional level. Furthermore, GTE, lut, and lut-7-g blocked the TNF-α-induced degradation of nuclear factor-κB inhibitor (IκB), an indicator of the activation of nuclear factor-κB (NF-κB). In summary, GTE and its bioactive components were effective in preventing the adhesion of monocytes to cytokine-activated endothelium by the inhibition of expression of adhesion molecules, which in turn is mediated through blocking the activation and nuclear translocation of NF-κB. The current results reveal the therapeutic potential of GTE in atherosclerosis.
Collapse
|
53
|
De novo sequencing transcriptome of endemic Gentiana straminea (Gentianaceae) to identify genes involved in the biosynthesis of active ingredients. Gene 2015; 575:160-70. [PMID: 26358503 DOI: 10.1016/j.gene.2015.08.055] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 08/13/2015] [Accepted: 08/26/2015] [Indexed: 11/24/2022]
Abstract
Gentiana straminea is a popular Tibetan medicine that has been used for thousands of years in China to treat various diseases and conditions. Although it has multiple pharmaceutical purposes and important economic plant resource in China, transcriptome and molecular base still known limited. In flowering season, samples were collected from different tissues, using the NGS Illumina. Solexa platform, about 58.85 million sequencing reads were generated and assembled de novo, yielding 78,764 high quality unigenes with an average length of 1090bp. Gene Ontology (GO), KEGG pathway mapping showed that 49,033 of these were identified as putative homologs of annotated sequences in the protein databases. Among them, candidate genes associated with iridoid, flavonoid and anthocyanin were identified. Further the key enzymes involved to iridoid and flavonoid synthesis pathway were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR) on different tissues, the flower and root had the higher expression than leaves. In addition, 7591 SSR markers were identified from the unigenes of the G. straminea transcriptome. The foundation of G. straminea provided the important resource for facilitating to study molecular and functional genomics of it and related this species on the Qinghai-Tibet Plateau.
Collapse
|
54
|
Masuda T, Nojima S, Miura Y, Honda S, Masuda A. An oxidative coupling product of luteolin with cysteine ester and its enhanced inhibitory activity for xanthine oxidase. Bioorg Med Chem Lett 2015; 25:3117-9. [DOI: 10.1016/j.bmcl.2015.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 05/30/2015] [Accepted: 06/02/2015] [Indexed: 01/07/2023]
|
55
|
Xiao J, Capanoglu E, Jassbi AR, Miron A. WITHDRAWN: The paradox of natural flavonoid C-glycosides and health benefits: When more occurrence is less research. Biotechnol Adv 2014:S0734-9750(14)00177-3. [PMID: 25450193 DOI: 10.1016/j.biotechadv.2014.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/06/2014] [Accepted: 11/06/2014] [Indexed: 02/08/2023]
Abstract
This article has been withdrawn at the request of the editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
Collapse
Affiliation(s)
- Jianbo Xiao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau; Institut für Pharmazie und Lebensmittelchemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - Amir Reza Jassbi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Anca Miron
- Department of Pharmacognosy, Faculty of Pharmacy, University of Medicine and Pharmacy Grigore T. Popa - Iasi, 700115 Iasi, Romania.
| |
Collapse
|
56
|
Karakaş BR, Davran F, Elpek GÖ, Akbaş SH, Gülkesen KH, Bülbüller N. The effects of luteolin on the intestinal ischemia/reperfusion injury in mice. J INVEST SURG 2014; 27:249-55. [PMID: 24354416 DOI: 10.3109/08941939.2013.865819] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The purpose of this study is to investigate the potential protective effect of the flavonoid Luteolin on ischemia-reperfusion (IR) injury in mouse intestine, which has not previously been studied. Twenty-four female C57BL/6 mice were randomly assigned to four groups, each consisting of 6 mice: a sham group (laparotomy, but no IR injury), a sham + Luteolin group (no IR, and Luteolin was administered intraperitoneally 30 min after laparotomy), IR group (30 min occlusion of the superior mesenteric artery (SMA) then 2 hr' reperfusion), IR + Luteolin (30 min occlusion of the SMA then 2 hr' reperfusion; Luteolin was administered intraperitoneally before reperfusion). Intestine tissues were harvested from the mice for histopathological and biochemical analysis. Total oxidant status (TOS) and total antioxidant capacity (TAC) of the intestinal tissues were measured using Erel's method. Oxidative stress index (OSI) was calculated using the TOS/TAC ratio. Intestinal histological changes were significantly decreased in the IR + Luteolin group compared with the IR group (p = .037). TOS tissue levels were also significantly decreased in the IR + Luteolin group compared with the IR group (p = .005). TAC levels did not increase significantly in the IR treatment group and were not affected by Luteolin treatment (p > .05). The results of this study show that Luteolin administration provides considerable protection against IR injury in the mouse intestine.
Collapse
Affiliation(s)
- Barış Rafet Karakaş
- 1Department of General Surgery, Antalya Training and Research Hospital, Antalya, Turkey
| | | | | | | | | | | |
Collapse
|
57
|
Parveen I, Wilson T, Threadgill MD, Luyten J, Roberts RE, Robson PRH, Donnison IS, Hauck B, Winters AL. Screening for potential co-products in a Miscanthus sinensis mapping family by liquid chromatography with mass spectrometry detection. PHYTOCHEMISTRY 2014; 105:186-96. [PMID: 24894362 DOI: 10.1016/j.phytochem.2014.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 04/23/2014] [Accepted: 05/03/2014] [Indexed: 05/08/2023]
Abstract
Society is demanding more green chemicals from sustainable sources. Miscanthus is a potential source of platform chemicals and bioethanol through fermentation. Miscanthus sinensis (M. sinensis) has been found to contain particularly high levels of soluble phenols (hydroxycinnamates and flavonoids) which may have application in the nutraceutical, cosmetic and pharmaceutical industries. Here, we describe the first study on the identification and quantification of phenols from the leaf tissue of a bi-parental M. sinensis mapping family. Parents and progeny showed complex profiles of phenols with highly related structures which complicated characterisation of individual phenotypes. Separation of semi-purified extracts by reverse-phase liquid chromatography, coupled with detection by diode array and ESI-MS/MS, enabled distinction of different profiles of phenols. Ten hydroxycinnamates (O-cinnamoylquinic acids) and several flavones (one mono-O-glycosyl flavone, eight mono-C-glycosyl flavones, two di-C-glycosyl flavones, five O-glycosyl-C-glycosyl flavones and nine 2″-O-glycosyl-C-glycosyl flavones) were identified and quantified in leaf tissue of two hundred progeny and maternal and paternal plants during the seedling stage. Progeny exhibiting high, moderate and low amounts of hydroxycinnamates and flavonoids and both parents were selected and screened at seven months' growth to determine the abundance of these phenols at their highest biomass and compared with seedlings. Concentrations of phenols generally decreased as leaves matured. Several flavone-glycosides were identified. This technique can be used for rapid screening of plants in a mapping family to identify genotypes with high phenol content to add value in the biorefinery chain. This comparative study provides information on the content of potentially valuable compounds from readily renewable resources and possible biomarkers for identification in breeding programmes.
Collapse
Affiliation(s)
- Ifat Parveen
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK.
| | - Thomas Wilson
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK.
| | - Michael D Threadgill
- Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Jakob Luyten
- K.H. Kempen University College, Department of Health Care & Chemistry, Kleinhoefstraat 4, 2440 Geel, Belgium
| | - Ruth E Roberts
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK
| | - Paul R H Robson
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK
| | - Iain S Donnison
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK
| | - Barbara Hauck
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK
| | - Ana L Winters
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK
| |
Collapse
|
58
|
Žemlička L, Fodran P, Lukeš V, Vagánek A, Slováková M, Staško A, Dubaj T, Liptaj T, Karabín M, Birošová L, Rapta P. Physicochemical and biological properties of luteolin-7-O-β-d-glucoside (cynaroside) isolated from Anthriscus sylvestris (L.) Hoffm. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1228-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
59
|
Michael BR, Gedara SR, Amer MM, Stevenson L, Ahmed AF. Evidence-based medicinal value ofRudbeckia hirtaL. flowers. Nat Prod Res 2014; 28:909-13. [DOI: 10.1080/14786419.2014.891202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
60
|
Wang Y, Chen P, Tang C, Wang Y, Li Y, Zhang H. Antinociceptive and anti-inflammatory activities of extract and two isolated flavonoids of Carthamus tinctorius L. JOURNAL OF ETHNOPHARMACOLOGY 2014; 151:944-950. [PMID: 24333963 DOI: 10.1016/j.jep.2013.12.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/22/2013] [Accepted: 12/02/2013] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Safflower (Carthamus tinctorius L.) has been long used both in the traditional system and folk medicine as an analgesic anti-inflammatory agent in China. The aim of the study was to evaluate the antinociceptive and anti-inflammatory activities of hydroalcoholic extract (HE) and two isolated kaempferol glycosides of Carthamus tinctorius L. to provide experimental evidence for its traditional use. MATERIALS AND METHODS Antinociceptive effects of HE, kaempferol 3-O-rutinoside (K-3-R) and kaempferol 3-O-glucoside (K-3-G) were assessed in mice using the acetic acid-induced writhing test, formalin test and cinnamaldehyde test. The anti-inflammatory effects of HE, K-3-R and K-3-G were determined in two animal models: carrageenan-induced paw edema and xylene-induced ear edema. RESULTS The HPLC analysis showed the presence of K-3-R and K-3-G in Carthamus tinctorius L. HE (500 and 1000mg/kg) as well as K-3-R and K-3-G (150, 300 and 600mg/kg) produced significant inhibition on nociception induced by acetic acid and formalin. Oral treatment of HE, K-3-R and K-3-G at all doses significantly reduced both the nociceptive response and cinnamaldehyde-induced paw edema, effect that was superior to aspirin. In anti-inflammatory tests, HE and K-3-G significantly inhibited the paw edema during the both phases of carrageenan-induced inflammation while K-3-G suppressed the late phase inflammation only. HE (400 and 800mg/kg) and K-3-G (200, 400, 800mg/kg) produced significant dose-dependent inhibition of xylene-induced ear edema development. K-3-R only suppressed ear edema formation at a high dose (800mg/kg). CONCLUSIONS These results demonstrate that Carthamus tinctorius L. extract possess remarkable antinociceptive and anti-inflammatory activities which may be due to K-3-R and K-3-G at least in part, supporting the folkloric usage of the plant to treat various inflammatory and pain diseases.
Collapse
Affiliation(s)
- Yu Wang
- Department of Pharmacognosy, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ping Chen
- Department of Pharmacognosy, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Changyun Tang
- Department of Pharmacognosy, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yao Wang
- Department of Pharmacognosy, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yazhen Li
- Department of Pharmacognosy, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hao Zhang
- Department of Pharmacognosy, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| |
Collapse
|
61
|
Optimization and pharmacological validation of a leukocyte migration assay in zebrafish larvae for the rapid in vivo bioactivity analysis of anti-inflammatory secondary metabolites. PLoS One 2013; 8:e75404. [PMID: 24124487 PMCID: PMC3790782 DOI: 10.1371/journal.pone.0075404] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 08/13/2013] [Indexed: 02/02/2023] Open
Abstract
Over the past decade, zebrafish (Danio rerio) have emerged as an attractive model for in vivo drug discovery. In this study, we explore the suitability of zebrafish larvae to rapidly evaluate the anti-inflammatory activity of natural products (NPs) and medicinal plants used in traditional medicine for the treatment of inflammatory disorders. First, we optimized a zebrafish assay for leukocyte migration. Inflammation was induced in four days post-fertilization (dpf) zebrafish larvae by tail transection and co-incubation with bacterial lipopolysaccharides (LPS), resulting in a robust recruitment of leukocytes to the zone of injury. Migrating zebrafish leukocytes were detected in situ by myeloperoxidase (MPO) staining, and anti-inflammatory activity was semi-quantitatively scored using a standardized scale of relative leukocyte migration (RLM). Pharmacological validation of this optimized assay was performed with a panel of anti-inflammatory drugs, demonstrating a concentration-responsive inhibition of leukocyte migration for both steroidal and non-steroidal anti-inflammatory drugs (SAIDs and NSAIDs). Subsequently, we evaluated the bioactivity of structurally diverse NPs with well-documented anti-inflammatory properties. Finally, we further used this zebrafish-based assay to quantify the anti-inflammatory activity in the aqueous and methanolic extracts of several medicinal plants. Our results indicate the suitability of this LPS-enhanced leukocyte migration assay in zebrafish larvae as a front-line screening platform in NP discovery, including for the bioassay-guided isolation of anti-inflammatory secondary metabolites from complex NP extracts.
Collapse
|
62
|
Orhan F, Gulluce M, Ozkan H, Alpsoy L. Determination of the antigenotoxic potencies of some luteolin derivatives by using a eukaryotic cell system, Saccharomyces cerevisiae. Food Chem 2013; 141:366-72. [PMID: 23768369 DOI: 10.1016/j.foodchem.2013.02.089] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 01/10/2013] [Accepted: 02/21/2013] [Indexed: 12/29/2022]
Abstract
In this study, we aimed to examine the mutagenic and antimutagenic potencies of three luteolin derivatives (luteolin-7-O-glucoside, luteolin-7-O-rutinoside and luteolin-7-O-glucuronide) by using a eukaryotic cell system, Saccharomyces cerevisiae (RS112). In the antimutagenicity assays, these luteolin derivatives showed antimutagenic effects in deletion and intrachromosomal recombination events against ethyl methanesulfonate and acridine mutagen agents. In deletion events, the highest inhibition rates for luteolin-7-O-glucoside, luteolin-7-O-rutinoside and luteolin-7-O-glucuronide against ethyl methanesulfonate were 57.6%, 58.3% and 62.5%, respectively. Likewise, the highest inhibition rates for luteolin-7-O-glucoside, luteolin-7-O-rutinoside and luteolin-7-O-glucuronide against acridin were 21.8%, 22.4% and 23.6%, respectively. Our findings showed that these luteolin derivatives have stronger antimutagenic properties against ethyl methanesulfonate compared to the acridine mutagen agent.
Collapse
Affiliation(s)
- Furkan Orhan
- Agri Ibrahim Cecen University, Central Research and Application Laboratories, Agri TR-04100, Turkey
| | | | | | | |
Collapse
|
63
|
Bioactivity guided isolation of antiinflammatory, analgesic, and antipyretic constituents from the leaves of Pedilanthus tithymaloides (L.). Med Chem Res 2013. [DOI: 10.1007/s00044-012-0449-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
64
|
Zhang D, Zhang J, Fong C, Yao X, Yang M. Herba epimedii flavonoids suppress osteoclastic differentiation and bone resorption by inducing G2/M arrest and apoptosis. Biochimie 2012; 94:2514-22. [DOI: 10.1016/j.biochi.2012.06.033] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 06/29/2012] [Indexed: 01/06/2023]
|
65
|
Ghosh S, Samanta A, Mandal NB, Bannerjee S, Chattopadhyay D. Evaluation of the wound healing activity of methanol extract of Pedilanthus tithymaloides (L.) Poit leaf and its isolated active constituents in topical formulation. JOURNAL OF ETHNOPHARMACOLOGY 2012; 142:714-722. [PMID: 22683906 DOI: 10.1016/j.jep.2012.05.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 05/10/2012] [Accepted: 05/25/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pedilanthus tithymaloides leaves are widely used in Indian medicine to heal wounds, burn, mouth ulcers. However, systematic evaluation of these activities is lacking. Thus, the present study aimed to assesses the wound healing activity of Pedilanthus leaves and its isolated constituents in topical ointment formulation. MATERIALS AND METHODS Bioassay-guided chromatographic fractionation of the methanol extract of leaves resulted in the isolation of 2-(3,4-dihydroxy-phenyl)-5,7-dihydroxy-chromen-4-one and 1, 2-tetradecanediol, 1-(hydrogen sulfate), sodium salt. The ointment formulation of methanol extract (2.5%, 5% w/w) and isolated compounds (0.25% w/w) was prepared and evaluated on excision, incision and dead space wound models in rats. The effects of formulations on wound healing were assessed by the rate of wound closure, period of epithelialization, tensile strength, granulation tissue weight, hydroxyproline content and histopathology. RESULTS Significant wound healing activity was observed with methanol extract and isolated constituents. Topical application of isolated compound ointments caused faster epithelialization, significant wound contraction (95.41%), and better tensile strength (565.33 g) on 16 post-wounding day, while 5% extract showed wound epithelialization with 95.55% contraction on 18th post-wounding day, better than the control group (76.39% on 22 day). The tensile strength of incision wound was significantly increased in extract and compound treated animals. Moreover, in dead space model the extract significantly increased granuloma tissue weight, tensile strength and hydroxyproline content. The tissue histology of ointment treated groups showed complete epithelialization with increased collagenation, compared to the povidone-iodine group. CONCLUSIONS The results validated the traditional use of Pedilanthus tithymaloides for cutaneous wound management.
Collapse
Affiliation(s)
- Soma Ghosh
- Division of Microbiology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | | | | | | | | |
Collapse
|
66
|
Süntar I, Küpeli Akkol E, Keles H, Yesilada E, Sarker SD, Arroo R, Baykal T. Efficacy of Daphne oleoides subsp. kurdica used for wound healing: identification of active compounds through bioassay guided isolation technique. JOURNAL OF ETHNOPHARMACOLOGY 2012; 141:1058-1070. [PMID: 22521733 DOI: 10.1016/j.jep.2012.04.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 03/10/2012] [Accepted: 04/03/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Turkish traditional medicine, the aerial parts of Daphne oleoides Schreber subsp. kurdica (DOK) have been used to treat malaria, rheumatism and for wound healing. The aim was to evaluate the ethnopharmacological usage of the plant using in vivo and in vitro pharmacological experimental models, and to perform bioassay-guided fractionation of the 85% methanolic extract of DOK for the isolation and identification of active wound-healing component(s) and to elucidate possible mechanism of the wound-healing activity. MATERIALS AND METHODS In vivo wound-healing activity was evaluated by the linear incision and the circular excision wound models. Anti-inflammatory and antioxidant activities, which are known to support the wound healing process, were also assessed by the Whittle method and the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging assays, respectively. The total phenolic content of the extract and subextracts was estimated to establish any correlation between the phenolic content and the antioxidant activity. The methanolic extract of DOK was subjected to various chromatographic separation techniques leading to the isolation and identification of the active component(s). Furthermore, in vitro hyaluronidase, collagenase and elastase enzymes inhibitory activity assays were conducted on the active components to explore the activity pathways of the remedy. RESULTS After confirmation of the wound-healing activity, the methanolic extract was subjected to successive solvent partitioning using solvents of increasing polarity creating five subextracts. Each subextract was tested on the same biological activity model and the ethyl acetate (EtOAc) subextract had the highest activity. The EtOAc subextract was subjected to further chromatographic separation for the isolation of components 1, 2 and 3. The structures of these compounds were elucidated as daphnetin (1), demethyldaphnoretin 7-O-glucoside (2) and luteolin-7-O-glucoside (3). Further in vivo testing revealed that luteolin-7-O-glucoside was responsible for the wound-healing activity of the aerial parts. It was also found to exert significant anti-inflammatory, antioxidant, anti-hyaluronidase and anti-collagenase activities. CONCLUSION The present study explored the wound-healing potential of Daphne oleoides subsp. kurdica. Through bioassay-guided fractionation and isolation techniques, luteolin-7-O-glucoside was determined as the main active component of the aerial parts. This compound exerts its activity through inhibition of hyaluronidase and collagenase enzymes activity as well as interfering with the inflammatory stage.
Collapse
Affiliation(s)
- Ipek Süntar
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Etiler 06330, Ankara, Turkey
| | | | | | | | | | | | | |
Collapse
|
67
|
Rooban B, Sasikala V, Gayathri Devi V, Sahasranamam V, Abraham A. Prevention of selenite induced oxidative stress and cataractogenesis by luteolin isolated from Vitex negundo. Chem Biol Interact 2012; 196:30-8. [DOI: 10.1016/j.cbi.2012.01.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 01/17/2012] [Accepted: 01/22/2012] [Indexed: 12/01/2022]
|
68
|
Domínguez M, Avila JG, Nieto A, Céspedes CL. Anti-inflammatory activity of Penstemon gentianoides and Penstemon campanulatus. PHARMACEUTICAL BIOLOGY 2011; 49:118-124. [PMID: 20979542 DOI: 10.3109/13880209.2010.503708] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
CONTEXT Penstemon gentianoides (Kunth) Poir. and Penstemon campanulatus (Cav.) Willd. (Plantaginaceae) are important medicinal plants in Mexico used by indigenous people for their anti-inflammatory effects and to also reduce rheumatic pains. OBJECTIVE In addition to radical scavenging activity, the anti-inflammatory activity of the extracts, fractions and compounds of these plants were investigated and reported here for the first time. MATERIALS AND METHODS The anti-inflammatory activities of MeOH, CH(2)Cl(2), and ethyl acetate extracts and iridoid, flavonoids, and phenylpropanoids from Penstemon gentianoides and P. campanulatus were studied in the TPA-induced mouse ear edema model. In addition, antioxidant activity against DPPH, crocin and β-carotene were investigated. RESULTS All extracts were tested and a selection of known compounds significantly (p <0.05) inhibited mouse ear edema. The results showed that CH(2)Cl(2) extracts of roots and stems from P. gentianoides and ethyl acetate extracts of leaves from P. gentianoides and P. campanulatus, as well as luteolin, diosmetin, penstemide and verbascoside produced the most positive results. Of all substances tested, the CH(2)Cl(2) extract of P. gentianoides roots was the most powerful inhibitor (ED(50)=0.07 mg/ear), with activity comparable to that of indomethacin. These extracts, compounds purified, as well as known compounds, inhibited oxidation of β-carotene and crocin. DISCUSSION AND CONCLUSION These findings showed that the iridoid monoterpenes, flavonoids and phenylpropanoids present in these plants species may all contribute to the observed anti-inflammatory activity. Additionally, the observed antioxidant activity is correlated with the anti-inflammatory activity of these plants and the phytochemicals derived from them.
Collapse
Affiliation(s)
- Mariana Domínguez
- Phytochemical Laboratory, Unidad de Biotecnologia y Prototipos (UBIPRO), FES-Iztacala, UNAM, Mexico City, Mexico
| | | | | | | |
Collapse
|
69
|
|
70
|
de Queiroz AC, de Lira DP, Dias TDLMF, de Souza ET, da Matta CBB, de Aquino AB, Silva LHAC, da Silva DJC, Mella EAC, Agra MDF, Filho JMB, de Araújo-Júnior JX, Santos BVDO, Alexandre-Moreira MS. The antinociceptive and anti-inflammatory activities of Piptadenia stipulacea Benth. (Fabaceae). JOURNAL OF ETHNOPHARMACOLOGY 2010; 128:377-383. [PMID: 20097281 DOI: 10.1016/j.jep.2010.01.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 11/30/2009] [Accepted: 01/18/2010] [Indexed: 05/28/2023]
Abstract
AIM In this study, we attempted to identify the possible antinociceptive and anti-inflammatory actions of the aqueous phase, the ethyl acetate phase and one unknown flavonoid obtained from aerial parts of Piptadenia stipulacea, known in Brazil as "jurema-branca", "carcará" and "rasga-beiço". MATERIALS AND METHODS Aerial parts of Piptadenia stipulacea were used and after fractionation, the flavonoid FGAL was obtained. Experiments were conducted on Swiss mice using the acetic acid-induced writhing test, the hot plate test, the formalin-induced pain test and zymosan A-induced peritonitis test. RESULTS The aqueous and ethyl acetate phases (p.o., 100mg/kg); and the flavonoid FGAL (p.o. and i.p. at 100 micromol/kg), reduced the nociception produced by acetic acid, by 49.92%, 54.62%, 38.97% and 64.79%, respectively. In vivo inhibition of nociception by the ethyl acetate phase (100mg/kg, p.o.) in the hot plate test was favorable, indicating that this fraction exhibited central activity. The ethyl acetate phase (100mg/kg, p.o.) reduced the formalin effects in both phases by 28.51% and 55.72%, respectively. Treatment with the aqueous phase (100mg/kg, p.o.) and FGAL (100 micromol/kg, i.p.) only protected the second phase by 69.76% and 68.78%, respectively. In addition, it was observed in the zymosan A-induced peritonitis test that the aqueous phase, the ethyl acetate phase and the FGAL exhibited anti-inflammatory activity, reducing significantly the number of recruit cells by 35.84%, 37.70% and FGAL (1), respectively. CONCLUSIONS These data demonstrate that the FGAL elicits pronounced antinociceptive activity against several pain models. The actions of this flavonoid probably are due to antioxidative properties. However, pharmacological and chemical studies are continuing in order to characterize the mechanism(s) responsible for this antinociceptive action and also to identify other active substances present in Piptadenia stipulacea.
Collapse
Affiliation(s)
- Aline Cavalcanti de Queiroz
- LaFI - Laboratório de Farmacologia e Imunidade, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
71
|
Echeverry C, Arredondo F, Abin-Carriquiry JA, Midiwo JO, Ochieng C, Kerubo L, Dajas F. Pretreatment with natural flavones and neuronal cell survival after oxidative stress: a structure-activity relationship study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:2111-2115. [PMID: 20095615 DOI: 10.1021/jf902951v] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Quercetin shows structural features that have been related to the antioxidant potency of flavonoids and also shows neuroprotection in different models of oxidative death. Because only a few studies have focused on the flavonoid structural requirements for neuroprotection, this work evaluated the protective capacity of 13 flavones structurally related to quercetin, isolated from Kenyan plants, to rescue primary cerebellar granule neurons from death induced by a treatment with 24 h of hydrogen peroxide (150 microM). Each flavone (0-100 microM) was applied 24 h prior to the oxidative insult, and neuronal viability was evaluated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Results suggest that the o-dihydroxy substitution in the B-ring is not necessary to afford neuroprotection and could be partly responsible for neurotoxic effects. Furthermore, the hydroxy substitutions in the positions C3 (C-ring) in C5 and C7 (A-ring) would be important for neuroprotection in this model.
Collapse
Affiliation(s)
- Carolina Echeverry
- Departmento de Neuroquimica, Instituto de Investigaciones Biologicas Clemente Estable, Montevideo, Uruguay.
| | | | | | | | | | | | | |
Collapse
|
72
|
Setorki M, Asgary S, Eidi A, Rohani AH, Esmaeil N. Effects of apple juice on risk factors of lipid profile, inflammation and coagulation, endothelial markers and atherosclerotic lesions in high cholesterolemic rabbits. Lipids Health Dis 2009; 8:39. [PMID: 19804641 PMCID: PMC2761910 DOI: 10.1186/1476-511x-8-39] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2009] [Accepted: 10/05/2009] [Indexed: 12/20/2022] Open
Abstract
Background Atherosclerosis which results from gradual deposition of lipids in medium and large arteries is a leading cause of mortality worldwide. The objective of this study was to determine the effect of apple juice on some risk factors of atherosclerosis and on the development of atherosclerosis in rabbits fed a high-cholesterol diet. Methods Thirty two male rabbits were randomly divided into four groups: normal diet, high cholesterol diet (%1 cholesterol), 1% cholesterol supplemented with 5 ml apple juice (low dose) and 1% cholesterol supplemented with 10 ml apple juice (high dose) for 2 month. The C-reactive protein (CRP), nitrite, nitrate, fibrinogen, total cholesterol(TC) and factor VII were measured before the experiment and by the end of period. At the end of study, fatty streak formation in right and left coronary arteries were determined using Chekanov method in all groups. Results Both doses of apple juice significantly were decreased TC, TG, CRP, fibrinogen, factor VII levels, atherosclerotic lesion in right and left coronary arteries and increased nitrite and nitrate compared to cholesterolemic diet. Also using 10 ml apple juice caused significant reduce in LDL-C and increase HDL-C, but 5 ml apple juice did not change these factors. Significant differences were observed between 5 and 10 ml apple juice groups by LDL-C. No significant difference was found between 5 and 10 ml apple juice groups with regard to CRP, nitrite, nitrate, fibrinogen, factor VII, TG, HDL-C and TC concentrations. Conclusion Apple juice can effectively prevent the progress of atherosclerosis. This is likely due to antioxidant and anti-inflammatory effect of apple juice.
Collapse
Affiliation(s)
- Mahbubeh Setorki
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | | | | | | | | |
Collapse
|
73
|
Conforti F, Rigano D, Menichini F, Loizzo MR, Senatore F. Protection against neurodegenerative diseases of Iris pseudopumila extracts and their constituents. Fitoterapia 2009; 80:62-7. [DOI: 10.1016/j.fitote.2008.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2008] [Revised: 10/02/2008] [Accepted: 10/07/2008] [Indexed: 10/21/2022]
|
74
|
Abstract
Flavonoids are multi-active components used in common cosmetics primarily for antioxidant and soothing actions. Despite this, their multi-active properties are far from being fully used. It is well known that many flavonoids provide protection from telangiectasias and petechias caused by ruptured blood vessels. Thus, the notion of a "strengthening" effect of these compounds on blood vessel walls is common. The activity of flavonoids on skin blood vessels is complex. Three main components of their activity can be distinguished: blood vessel protection, platelet aggregation prevention, and capillary permeability decrease. Each of these components is realized with the participation of several mechanisms differing on the types of receptors that the flavonoids affect. Some of them consist of a direct action on the enzymes responsible for the synthesis of substances of tissue hormone character, such as thromboxanes, histamine, or platelet activating factor. The mechanisms based on less or more indirect activity can also be met. At least 11 points for activity can be distinguished among flavonoids' actions on blood vessels.
Collapse
Affiliation(s)
- Jacek Arct
- Warsaw University of Technology, Warsaw, Poland.
| | | |
Collapse
|
75
|
Production of phenylpropanoid compounds by recombinant microorganisms expressing plant-specific biosynthesis genes. Process Biochem 2008. [DOI: 10.1016/j.procbio.2008.02.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
76
|
A comparison of the effects of kaempferol and quercetin on cytokine-induced pro-inflammatory status of cultured human endothelial cells. Br J Nutr 2008; 100:968-76. [PMID: 18394220 DOI: 10.1017/s0007114508966083] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We investigated the effects of the flavonols kaempferol and quercetin on the expression of vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1), endothelial cell selectin (E-selectin), inducible NO synthase (iNOS) and cyclo-oxygenase-2 (COX-2), and on the activation of the signalling molecules NF-kappaB and activator protein-1 (AP-1), induced by a cytokine mixture in cultured human umbilical vein endothelial cells. Inhibition of reactive oxygen and nitrogen species generation did not differ among both flavonols at 1 micromol/l but was significantly stronger for kaempferol at 5-50 micromol/l. Supplementation with increasing concentrations of kaempferol substantially attenuated the increase induced by the cytokine mixture in VCAM-1 (10-50 micromol/l), ICAM-1 (50 micromol/l) and E-selectin (5-50 micromol/l) expression. A significantly inhibitory effect of quercetin on VCAM-1 (10-50 micromol/l), ICAM-1 (50 micromol/l) and E-selectin (50 micromol/l) expression was also observed. Expression of adhesion molecules was always more strongly inhibited in kaempferol-treated than in quercetin-treated cells. The inhibitory effect on iNOS and COX-2 protein level was stronger for quercetin at 5-50 micromol/l. The effect of kaempferol on NF-kappaB and AP-1 binding activity was weaker at high concentrations (50 micromol/l) as compared with quercetin. The present study indicates that differences exist in the modulation of pro-inflammatory genes and in the blockade of NF-kappaB and AP-1 by kaempferol and quercetin. The minor structural differences between both flavonols determine differences in their anti-inflammatory properties and in their efficiency in inhibiting signalling molecules.
Collapse
|
77
|
Backhouse N, Rosales L, Apablaza C, Goïty L, Erazo S, Negrete R, Theodoluz C, Rodríguez J, Delporte C. Analgesic, anti-inflammatory and antioxidant properties of Buddleja globosa, Buddlejaceae. JOURNAL OF ETHNOPHARMACOLOGY 2008; 116:263-269. [PMID: 18164566 DOI: 10.1016/j.jep.2007.11.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2007] [Revised: 11/15/2007] [Accepted: 11/16/2007] [Indexed: 05/25/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Buddleja globosa, known as "matico", is employed in Chile for wound healing. AIM OF THE STUDY To validate the traditional use of the crude drug through in vivo and in vitro evaluation of the anti-inflammatory, analgesic and antioxidant properties of its extracts. MATERIALS AND METHODS Sequential hexane, dichloromethane, methanol and total methanol extracts were studied using bioguided fractionation. The following activities were investigated: analgesic (writhing test), oral and topic anti-inflammatory (paw- and ear-induced edema), free radical scavenging and antioxidant activities (1,1-diphenyl-2-picrylhydrazyl, DPPH, superoxide anion, lipid peroxidation and xanthine oxidase inhibition). Sodium naproxen, nimesulide, indomethacin were used as reference drugs for in vivo, quercetin and allopurinol for in vitro assays. RESULTS A mixture of alpha- and beta-amyrins was isolated from the hexane extract that showed 41.2% of analgesic effect at 600 mg/kg, inhibited by 47.7 and 79.0% the arachidonic acid (AA) and 12-deoxyphorbol-13-decanoate (TPA)-induced inflammation at 3mg/20 microL/ear, respectively. A mixture of beta-sitosterol, stigmasterol, stigmastenol, stigmastanol and campesterol was isolated from the fraction CD4-N and beta-sitosterol-glycoside from the fraction CD5-N, reducing TPA-induced inflammation by 78.2 and 83.7% at 1mg/20 microL/ear, respectively. The fraction CD4-N at 300 mg/kg also showed analgesic activity (38.7%). The methanol extract at 600mg/kg per os showed anti-inflammatory effect (61.4%), topic anti-inflammatory (56.7% on TPA) and analgesic activity (38.5%). Verbascoside and luteolin-7-O-glucoside were the major components of the methanol extract; apigenin 7-O-glucoside was also detected. Inhibition of superoxide anion, lipoperoxidation, and DPPH bleaching effect was found in the methanol serial and global extracts. CONCLUSIONS The present report demonstrate the analgesic and anti-inflammatory properties of Buddleja globosa and validate its use in Chilean traditional medicine.
Collapse
Affiliation(s)
- N Backhouse
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Quimicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago-1, Chile.
| | | | | | | | | | | | | | | | | |
Collapse
|
78
|
Li H, Nakashima T, Tanaka T, Zhang YJ, Yang CR, Kouno I. Two new maltol glycosides and cyanogenic glycosides from Elsholtzia rugulosa Hemsl. J Nat Med 2007; 62:75-8. [DOI: 10.1007/s11418-007-0188-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Accepted: 07/02/2007] [Indexed: 11/29/2022]
|
79
|
Benincá JP, Montanher AB, Zucolotto SM, Schenkel EP, Fröde TS. Evaluation of the anti-inflammatory efficacy of Passiflora edulis. Food Chem 2007. [DOI: 10.1016/j.foodchem.2007.01.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
80
|
García-Mediavilla V, Crespo I, Collado PS, Esteller A, Sánchez-Campos S, Tuñón MJ, González-Gallego J. The anti-inflammatory flavones quercetin and kaempferol cause inhibition of inducible nitric oxide synthase, cyclooxygenase-2 and reactive C-protein, and down-regulation of the nuclear factor kappaB pathway in Chang Liver cells. Eur J Pharmacol 2006; 557:221-9. [PMID: 17184768 DOI: 10.1016/j.ejphar.2006.11.014] [Citation(s) in RCA: 341] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2006] [Revised: 11/02/2006] [Accepted: 11/06/2006] [Indexed: 12/26/2022]
Abstract
We examined the ability of the flavonoids quercetin and kaempferol to modulate inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) and reactive C-protein (CRP) expression, and to induce changes in the nuclear factor kappa B (NF-kappaB) pathway in the human hepatocyte-derived cell line Chang Liver. Cells were incubated with a cytokine mixture supplemented with quercetin or kaempferol (5 to 200 micromol/l). Kaempferol produced a significant concentration-dependent decrease of iNOS, COX-2 and CRP protein level at all concentrations, but the percentage of inhibition induced by quercetin was reduced at high concentrations. Both flavonoids significantly inhibited mRNA level of iNOS, COX-2, and CRP. Inhibitory effects by quercetin and kaempferol were also observed on NF-kappaB activation and on protein concentration of the phosphorylated form of the inhibitor IkappaB alpha and of IKK (IkappaB kinase)alpha. The present study suggests that the modulation of iNOS, COX-2 and CRP by quercetin or kaempferol may contribute to the anti-inflammatory effects of these two structurally similar flavonoids in Chang Liver cells, via mechanisms likely to involve blockade of NF-kappaB activation and the resultant up-regulation of the pro-inflammatory genes. Our data also indicate that the minor structural differences between both compounds determine differences in their inhibitory capacity.
Collapse
|
81
|
Keppler K, Hein EM, Humpf HU. Metabolism of quercetin and rutin by the pig caecal microflora prepared by freeze-preservation. Mol Nutr Food Res 2006; 50:686-95. [PMID: 16835870 DOI: 10.1002/mnfr.200600016] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Several studies confirm a protection of cardiovascular diseases and certain forms of cancer by dietary flavonoid intake. The bioavailability of flavonoids is influenced by the metabolism of the microflora in the intestine. Using a new in vitro model system the deglycosylation of the flavonol rutin and the degradation of its aglycone quercetin were investigated by using fresh pig caecal inocula in comparison to inocula prepared before by freeze-preservation between 6 wk and 5 months. The incubation experiments led to the same pattern of phenolic degradation products in comparable amounts in both preparations using HPLC-DAD and GC-flame ionization detection (GC-FID) or GC-MS detection within 24-48 h of incubation. With the preservation of the microbial vitality and the metabolic efficiency by freeze-preparation over several months the experimental design of microbial metabolism studies will be independent in time and locality.
Collapse
Affiliation(s)
- Katrin Keppler
- Institut für Lebensmittelchemie, Westfälische Wilhelms-Universität Münster, Corrensstrasse 45, 48149 Münster, Germany
| | | | | |
Collapse
|
82
|
Sadhu SK, Ahmed F, Ohtsuki T, Ishibashi M. Flavonoids from Sonneratia caseolaris. J Nat Med 2006; 60:264-265. [PMID: 29435876 DOI: 10.1007/s11418-006-0029-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Accepted: 12/08/2005] [Indexed: 11/25/2022]
Abstract
According to the traditional medicinal usage of Sonneratia caseolaris, we tested the extract of S. caseolaris for antioxidant activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging effect on thin-layer chromatography. Following activity-oriented separation, two flavonoids, luteolin (1) and luteolin 7-O-β-glucoside (2), were isolated. Both of the compounds were found to possess antioxidant activity.
Collapse
Affiliation(s)
- Samir Kumar Sadhu
- Pharmacy discipline, Life Science School, Khulna University, Khulna-9208, Bangladesh.,Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Firoj Ahmed
- Pharmacy discipline, Life Science School, Khulna University, Khulna-9208, Bangladesh
| | - Takashi Ohtsuki
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Masami Ishibashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan.
| |
Collapse
|