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Degfie T, Endale M, Aliye M, Eswaramoorthy R, Nefo Duke T, Dekebo A. In Vitro Antibacterial, Antioxidant, Cytotoxicity Activity, and In Silico Molecular Modelling of Compounds Isolated from Roots of Hydnora johannis. Biochem Res Int 2024; 2024:3713620. [PMID: 38948887 PMCID: PMC11213641 DOI: 10.1155/2024/3713620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 02/20/2024] [Accepted: 05/25/2024] [Indexed: 07/02/2024] Open
Abstract
The plant Hydnora johannis has been utilized in folk medicine. Analyzing phytochemical composition of dichloromethane/methanol (1 : 1) root part of Hydnora johannis gave oleic acid (1), caffeic acid-2-hydroxynonylester (2), catechin (3), and a pregnane derivative (4). NMR spectroscopy was used to characterize compounds 1-3, while compound 4 was identified through GC-MS analysis and literature comparison. The cytotoxicity of extracts from roots of H. johannis was conducted against MCF-7 cell lines (human breast cancer) by MTT assay. According to the cytotoxicity study, n-hexane extract exhibited a high level of toxicity with 28.9 ± 5.6% cell viability. Antibacterial activity was tested against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Streptococcus pyogen. The highest bacterial growth mean inhibition zone was measured for catechin (3) (13.72 ± 0.05 mm)) against P. aeruginosa at 0.25 mg/mL and acceptable related to standard. Antioxidant activity was studied by the DPPH assay. Based on the data from the antioxidant study, DCM/MeOH extract (70.32%) and catechin (3) showed good antioxidant activity (65.61%) (IC50 0.25 μg/mL) relative to that of the positive control (78.21%, IC50 0.014 μg/mL) at 12.5 μg/mL. In each docking pose, catechin (3) scored higher binding affinity of -7.9, -7.2, and -6.4 kcal/mol towards PqsA, DNA gyraseB, and S. aureus PK, respectively, compared to amoxicillin (-8.1, -6.1, and -6.4 kcal/mol). All five Lipinski rules were obeyed by compounds 1-3, which showed an acceptable drug resemblance. The lipophilicity was computed as less than five (1.47-4.01) indicating a lipophilic property. Catechin (3) obeys Veber's rule implying its good oral bioavailability. Binding affinity scores of catechin (3)-protein interactions are in line with those from in vitro tests, indicating its potential antibacterial effect. The obtained cytotoxicity and antibacterial activity results support the utilization of H. johannis in folk medicine.
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Affiliation(s)
- Teshome Degfie
- Department of Applied Chemistry, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia
- Department of Chemistry, Dire Dawa University, P.O. Box 1362, Dire Dawa, Ethiopia
| | - Milkyas Endale
- Traditional and Modern Medicine Research and Development Directorate, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia
| | - Muhdin Aliye
- Department of Applied Chemistry, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia
| | - Rajalakshmanan Eswaramoorthy
- Department of Biomaterials, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600 077, India
| | - Tariku Nefo Duke
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Aman Dekebo
- Department of Applied Chemistry, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia
- Institute of Pharmaceutical Sciences, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia
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Chafouz R, Karavergou S, Tsiftsoglou OS, Maskovic P, Lazari D. Ganoderma adspersum (Ganodermataceae): Investigation of Its Secondary Metabolites and the Antioxidant, Antimicrobial, and Cytotoxic Potential of Its Extracts. Int J Mol Sci 2023; 25:516. [PMID: 38203687 PMCID: PMC10779304 DOI: 10.3390/ijms25010516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/23/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024] Open
Abstract
Ganoderma is a genus of wood-degrading mushrooms with medicinal importance. Most Ganoderma species have been studied extensively for their secondary metabolites, biological activities, and ecological value. In this study, the biological activities of the extracts of G. adspersum growing wild on Morus alba trees in the region of Western Thrace (Greece) were evaluated, and the petroleum ether, dichloromethanolic, and methanolic extracts were studied further for their secondary metabolites. Six substances were isolated by chromatographic (Clumn Chromatography (C.C.), High Performance Liquid Chromatography (HPLC)) and spectroscopic methods (Nuclear Magnetic Resonance (NMR)), which were classified in the following categories: (a) unsaturated fatty acids: cis-oleic acid (1); (b) sterols: ergosta-7,22-dien-3-one (2), ergosta-7,22-dien-3-ol (3), and ergosta-5,7,22-trien-3-ol (4); and (c) lanostane-type triterpenoids: applanoxidic acid G (5) and applanoxidic acid A (6). Finally, the biological activities of the extracts were estimated for their antioxidant, antimicrobial, and cytotoxic potential. The methanolic extract of G. adspersum showed the highest total antioxidant activity. The results of the antimicrobial activities indicated that all of the extracts had a minimum inhibitory concentration (MIC) ranging between 39.1 and 312.5 μg/mL. The evaluation of the cytotoxic activity of the samples showed once again that the methanolic extract was the most potent among the examined extracts, with half-maximal inhibitory concentration (IC50) values of 19.22 μg/mL (Hep2c cells), 32.9 μg/mL (RD cells), and 8.94 μg/mL (L2OB cells). Moreover, the bioactivity scores of the isolated secondary metabolites were calculated using the online computer software program Molinspiration. The compounds showed promising bioactivity scores for drug targets.
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Affiliation(s)
- Raichan Chafouz
- Laboratory of Pharmacognosy, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (R.C.); (S.K.); (O.S.T.)
| | - Sofia Karavergou
- Laboratory of Pharmacognosy, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (R.C.); (S.K.); (O.S.T.)
| | - Olga St. Tsiftsoglou
- Laboratory of Pharmacognosy, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (R.C.); (S.K.); (O.S.T.)
| | - Pavle Maskovic
- Department of Chemistry and Chemical Engineering, Faculty of Agronomy, University of Kragujevac, Cara Dušana 34, 32000 Čačak, Serbia;
| | - Diamanto Lazari
- Laboratory of Pharmacognosy, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (R.C.); (S.K.); (O.S.T.)
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Baccile N, Lorthioir C, Ba AA, Le Griel P, Pérez J, Hermida-Merino D, Soetaert W, Roelants SLKW. Topological Connection between Vesicles and Nanotubes in Single-Molecule Lipid Membranes Driven by Head-Tail Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14574-14587. [PMID: 36410028 DOI: 10.1021/acs.langmuir.2c01824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Lipid nanotube-vesicle networks are important channels for intercellular communication and transport of matter. Experimentally observed in neighboring mammalian cells but also reproduced in model membrane systems, a broad consensus exists on their formation and stability. Lipid membranes must be composed of at least two molecular components, each stabilizing low (generally a phospholipid) and high curvatures. Strong anisotropy or enhanced conical shape of the second amphiphile is crucial for the formation of nanotunnels. Anisotropic driving forces generally favor nanotube protrusions from vesicles. In this work, we report the unique case of topologically connected nanotubes-vesicles obtained in the absence of directional forces, in single-molecule membranes, composed of an anisotropic bolaform glucolipid, above its melting temperature, Tm. Cryo-TEM and fluorescence confocal microscopy show the interconnection between vesicles and nanotubes in a single-phase region, between 60 and 90 °C under diluted conditions. Solid-state NMR demonstrates that the glucolipid can assume two distinct configurations, head-head and head-tail. These arrangements, seemingly of comparable energy above the Tm, could explain the existence and stability of the topologically connected vesicles and nanotubes, which are generally not observed for classical single-molecule phospholipid-based membranes above their Tm.
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Affiliation(s)
- Niki Baccile
- Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, Sorbonne Université, Paris75005, France
| | - Cédric Lorthioir
- Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, Sorbonne Université, Paris75005, France
| | - Abdoul Aziz Ba
- Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, Sorbonne Université, Paris75005, France
| | - Patrick Le Griel
- Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, Sorbonne Université, Paris75005, France
| | - Javier Pérez
- Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP48, Gif-sur-Yvette Cedex91192, France
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, Grenoble38043, France
- Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, Vigo36310, Spain
| | - Wim Soetaert
- InBio, Department of Biotechnology, Ghent University, Ghent9000, Belgium
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Baccile N, Poirier A, Seyrig C, Le Griel P, Perez J, Hermida-Merino D, Pernot P, Roelants SL, Soetaert W. Chameleonic Amphiphile: the Unique Multiple Self-Assembly Properties of a Natural Glycolipid in Excess of Water. J Colloid Interface Sci 2022; 630:404-415. [DOI: 10.1016/j.jcis.2022.07.130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/11/2022] [Accepted: 07/20/2022] [Indexed: 11/30/2022]
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Lee D, Ko Y, Pang C, Ko YJ, Choi YK, Kim KH, Kang KS. Estrogenic Activity of Mycoestrogen (3 β,5 α,22 E)-Ergost-22-en-3-ol via Estrogen Receptor α-Dependent Signaling Pathways in MCF-7 Cells. Molecules 2021; 27:36. [PMID: 35011267 PMCID: PMC8746416 DOI: 10.3390/molecules27010036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 01/27/2023] Open
Abstract
Armillariella tabescens (Scop.) Sing., a mushroom of the family Tricholomataceae, has been used in traditional oriental medicine to treat cholecystitis, improve bile secretion, and regulate bile-duct pressure. The present study evaluated the estrogen-like effects of A. tabescens using a cell-proliferation assay in an estrogen-receptor-positive breast cancer cell line (MCF-7). We found that the methanol extract of A. tabescens fruiting bodies promoted cell proliferation in MCF-7 cells. Using bioassay-guided fractionation of the methanol extract and chemical investigation, we isolated and identified four steroids and four fatty acids from the active fraction. All eight compounds were evaluated by E-screen assay for their estrogen-like effects in MCF-7 cells. Among the tested isolates, only (3β,5α,22E)-ergost-22-en-3-ol promoted cell proliferation in MCF-7 cells; this effect was mitigated by the ER antagonist, ICI 182,780. The mechanism underlying the estrogen-like effect of (3β,5α,22E)-ergost-22-en-3-ol was evaluated using Western blot analysis to detect the expression of extracellular signal-regulated kinase (ERK), phosphatidylinositol 3-kinase (PI3K), Akt, and estrogen receptor α (ERα). We found that (3β,5α,22E)-ergost-22-en-3-ol induced an increase in phosphorylation of ERK, PI3K, Akt, and ERα. Together, these experimental results suggest that (3β,5α,22E)-ergost-22-en-3-ol is responsible for the estrogen-like effects of A. tabescens and may potentially aid control of estrogenic activity in menopause.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (Y.-K.C.)
| | - Yuri Ko
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA;
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea;
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Gwanak-gu, Seoul 08826, Korea;
| | - You-Kyoung Choi
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (Y.-K.C.)
| | - Ki Hyun Kim
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA;
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (Y.-K.C.)
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Constituents of Aquilaria sinensis Leaves Upregulate the Expression of Matrix Metalloproteases 2 and 9. Molecules 2021; 26:molecules26092537. [PMID: 33926142 PMCID: PMC8123650 DOI: 10.3390/molecules26092537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/16/2021] [Accepted: 04/24/2021] [Indexed: 11/16/2022] Open
Abstract
In this novel study, we isolated 28 compounds from the leaves of Aquilaria sinensis (Lour.) Gilg based on a bioassay-guided procedure and also discovered the possible matrix metalloprotease 2 (MMP-2) and 9 (MMP-9) modulatory effect of pheophorbide A (PA). To evaluate the regulatory activity on MMP-2 and MMP-9, the HT-1080 human fibrosarcoma cells were treated with various concentrations of extracted materials and isolated compounds. PA was extracted by methanol from the leaves of A. sinensis and separated from the fraction of the partitioned ethyl acetate layer. PA is believed to be an active component for MMP expression since it exhibited significant stimulation on MMP-2 and proMMP-9 activity. When treating with 50 μM of PA, the expression of MMP-2 and MMP-9 were increased 1.9-fold and 2.3-fold, respectively. PA also exhibited no cytotoxicity against HT-1080 cells when the cell viability was monitored. Furthermore, no significant MMP activity was observed when five PA analogues were evaluated. This study is the first to demonstrate that C-17 of PA is the deciding factor in determining the bioactivity of the compound. The MMP-2 and proMMP-9 modulatory activity of PA indicate its potential applications for reducing scar formation and comparative medical purposes.
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Liu L, Cheng Y, Sun X, Pi F. Numerical modeling of polymorphic transformation of oleic acid via near-infrared spectroscopy and factor analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 197:153-158. [PMID: 29325694 DOI: 10.1016/j.saa.2018.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/04/2018] [Accepted: 01/05/2018] [Indexed: 06/07/2023]
Abstract
Near-infrared (NIR) spectroscopy as a tool for direct and quantitatively screening the minute polymorphic transitions of bioactive fatty acids was assessed basing on a thermal heating process of oleic acid. Temperature-dependent NIR spectral profiles indicate that dynamical variances of COOH group dominate its γ → α phase transition, while the transition from active α to β phase mainly relates to the conformational transfer of acyl chain. Through operating multivariate curve resolution-alternating least squares with factor analysis, instantaneous contribution of each active polymorph during the transition process was illustrated for displaying the progressive evolutions of functional groups. Calculated contributions reveal that the α phase of oleic acid initially is present at around -18 °C, but sharply grows up around -2.2 °C from the transformation of γ phase and finally disappears at the melting point. On the other hand, the β phase of oleic acid is sole self-generation after melt even it embryonically appears at -2.2 °C. Such mathematical approach based on NIR spectroscopy and factor analysis calculation provides a volatile strategy in quantitatively exploring the transition processes of bioactive fatty acids; meanwhile, it maintains promising possibility for instantaneous quantifying each active polymorph of lipid materials.
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Affiliation(s)
- Ling Liu
- Wuxi Institute of Technology, Wuxi City, Jiangsu Province 214122, PR China
| | - Yuliang Cheng
- National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, Wuxi City, Jiangsu Province 214122, PR China
| | - Xiulan Sun
- National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, Wuxi City, Jiangsu Province 214122, PR China
| | - Fuwei Pi
- National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, Wuxi City, Jiangsu Province 214122, PR China.
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Hamid AA, Aiyelaagbe OO, Negi AS, Kaneez F, Luqman S, Oguntoye SO, Kumar SB, Zubair M. Isolation and antiproliferative activity of triterpenoids and fatty acids from the leaves and stem of Turraea vogelii Hook. f. ex benth. Nat Prod Res 2018; 33:296-301. [PMID: 29553827 DOI: 10.1080/14786419.2018.1446133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Chloroform extract from the leaves of Turraea vogelii Hook f. ex Benth demonstrated cytotoxic activity against a chronic myelogenous leukemia cell, K-562 with IC50 of 14.27 μg/mL, while chloroform, ethyl acetate and methanol extracts from the stem of the plant inhibited K-562 cells growth with IC50 of 19.50, 24.10 and 85.40 μg/mL respectively. Bioactive chloroform extract of Turraea vogelii leaves affords two triterpenoids: oleana-12,15,20-trien-3β-ol (1), and oleana-11,13-dien-3β,16α,28-triol (2), with six fatty esters, ethyl hexaeicos-5-enoate (3), 3-hydroxy-1,2,3-propanetriyltris(tetadecanoate) (4), 1,2,3-propanetriyl(7Z,7'Z,7''Z)tris(-7-hexadecenoate) (5), 1,2,3-propanetriyl(5Z,5'Z,5''Z)tris(-5-hexadecenoate) (6), 1,2,3-propanetriyltris(octadecanoate) (7), and 2β-hydroxymethyl tetraeicosanoate (8). Tetradecane (9), four fatty acids: hexadecanoic acid (10), tetradecanoic acid (11), (Z)-9-eicosenoic acid (12), and ethyl tetradec-7-enoate (13) were isolated from chloroform extract of Turraea vogelii stem. 1,2,3-propanetriyltris(heptadecanoate) (14), (Z)-9-octadecenoic acid (15) and (Z)-7-tetradecenoic acid (16) were isolated from ethyl acetate extract while (Z)-5-pentadecenoic acid (17) was obtained from methanol extract of the plant stem. Compounds 1, 2, 5, 6, 11, 12, 15, 16 and 17 exhibited pronounced antiproliferative activity against K-562 cell lines.
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Affiliation(s)
| | | | - Arvind S Negi
- c Medicinal Chemistry , CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP) , Lucknow , India
| | - Fatima Kaneez
- c Medicinal Chemistry , CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP) , Lucknow , India
| | - Suaib Luqman
- c Medicinal Chemistry , CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP) , Lucknow , India
| | | | - Satish B Kumar
- c Medicinal Chemistry , CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP) , Lucknow , India.,d Medicinal Chemistry , CSIR-Indian Institute of Chemical Technology (CSIR-IICT) , Hyderabad , India
| | - Marili Zubair
- e Department of Industrial Chemistry , University of Ilorin , Ilorin , Nigeria
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Lee S, Lee D, Park JY, Seok S, Jang TS, Park HB, Shim SH, Kang KS, Kim KH. Antigastritis effects of Armillariella tabescens (Scop.) Sing. and the identification of its anti-inflammatory metabolites. J Pharm Pharmacol 2018; 70:404-412. [DOI: 10.1111/jphp.12871] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/25/2017] [Indexed: 01/09/2023]
Abstract
Abstract
Objectives
This study demonstrates the biological and chemical analysis of the mushroom Armillariella tabescens (Scop.) Sing. (Tricholomataceae).
Methods
Chemical structures of the isolates were determined by 1D and 2D NMR, and ESI-MS, as well as comparison with previously reported data. All isolates were tested for anti-inflammatory effects based on their ability to inhibit LPS-stimulated nitric oxide (NO) production in RAW264.7 cells.
Key findings
We found that the MeOH extract of the fruiting bodies of A. tabescens showed antigastritis activity against ethanol-induced gastric damage in rats and notably reduced the gastric damage index compared to control in a concentration-dependent manner. Chemical investigation of the MeOH extract led to the isolation of four steroids (1–4), three alkaloids (5–7), two nucleic acids (8–9) and four fatty acids (10–13). This is the first study to report the identification of all isolates, except for compound 7, from A. tabescens. Compounds 1, 2, 3, 4 and 10 showed inhibition on LPS-stimulated NO production. Treatment with compound 10 inhibited expression of iNOS, COX-2, phospho-IKKα, IKKα, phospho-IκBα, IκBα and NF-kappa B in LPS-stimulated RAW264.7 cells.
Conclusions
Compound 10 likely contributes to the health benefits of A. tabescens as an antigastritis agent through its anti-inflammatory effects.
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Affiliation(s)
- Seulah Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Jun Yeon Park
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Soonja Seok
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, RDA, Iseo-myeon, Wanju-gun, Jeollabuk-do, Korea
| | - Tae Su Jang
- Institute of Green Bio Science & Technology, Seoul National University, Pyeong Chang, Korea
| | - Hyun Bong Park
- Department of Chemistry, Yale University, New Haven, CT, USA
| | - Sang Hee Shim
- College of Pharmacy, Duksung Women's University, Dobong-gu, Seoul, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
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Isolation, characterization and antiproliferative evaluation of constituents from stem extracts of Alafia barteri Oliv. Hook. F. Med Chem Res 2017. [DOI: 10.1007/s00044-017-2033-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hamid AA, Aiyelaagbe OO, Negi AS, Luqman S, Kaneez F. Isolation and antiproliferative activity of chemical constituents from Asystasia buettneri Lindau. Nat Prod Res 2017; 32:2076-2080. [DOI: 10.1080/14786419.2017.1360883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | - Arvind S. Negi
- Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, India
| | - Suaib Luqman
- Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, India
| | - Fatima Kaneez
- Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, India
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Hamid AA, Aiyelaagbe OO, Negi AS, Luqman S, Kaneez F. Bioguided Isolation and Antiproliferative Activity of Constituents fromSmilax korthalsiiA.D.C. Leaves. J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201500395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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de Sousa FF, Nogueira CES, Freire PTC, Moreira SGC, Teixeira AMR, de Menezes AS, Mendes Filho J, Saraiva GD. Conformational change in the C form of palmitic acid investigated by Raman spectroscopy and X-ray diffraction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 161:162-169. [PMID: 26971026 DOI: 10.1016/j.saa.2016.02.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 01/25/2016] [Accepted: 02/28/2016] [Indexed: 06/05/2023]
Abstract
Fatty acids are substances found in most living beings in nature. Here we report the effect of the low temperature in the vibrational and structural properties of the C form of palmitic acid, a fatty acid with 16 carbon atoms. The Raman spectra were obtained in the temperature interval from 300 to 18K in the spectral range between 30 and 3100 cm(-1). The assignment of the duly observed bands was done based on the density functional theory. On cooling, the main changes observed in the lattice mode region of the Raman spectra were interpreted as a conformational modification undergone by the palmitic acid molecules in the unit cell. The X-ray diffraction measurements were obtained from 290 to 80K showing a slight modification in the lattice parameters at about 210K. Differential scanning calorimetry (DSC) measurements were recorded between 150 and 300K and no enthalpic anomaly in the DSC thermogram was observed. These techniques provided strong evidence of the conformational change in the molecules of palmitic acid at low temperatures.
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Affiliation(s)
- F F de Sousa
- Instituto de Ciências Exatas, Universidade Federal do Sul e Sudeste do Pará, CEP 68505-080 Marabá, PA, Brazil
| | - C E S Nogueira
- Departamento de Física, Universidade Regional do Cariri, Juazeiro do Norte, CEP 63040-000, Brazil
| | - P T C Freire
- Departamento de Física, Universidade Federal do Ceará, CEP 60455-760 Fortaleza, CE, Brazil
| | - S G C Moreira
- Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, CEP 66075-110 Belém, PA, Brazil
| | - A M R Teixeira
- Departamento de Física, Universidade Regional do Cariri, Juazeiro do Norte, CEP 63040-000, Brazil
| | - A S de Menezes
- Departamento de Física, Universidade Federal do Maranhão, CEP 65080-805 São Luis, MA, Brazil
| | - J Mendes Filho
- Departamento de Física, Universidade Federal do Ceará, CEP 60455-760 Fortaleza, CE, Brazil
| | - G D Saraiva
- Faculdade de Educação Ciências e Letras do Sertão Central, Universidade Estadual do Ceará, CEP 63900-000 Quixadá, CE, Brazil.
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14
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Bartl B, Kobera L, Drábková K, Ďurovič M, Brus J. 'Wax bloom' on beeswax cultural heritage objects: Exploring the causes of the phenomenon. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:509-513. [PMID: 25916904 DOI: 10.1002/mrc.4244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 02/28/2015] [Accepted: 03/06/2015] [Indexed: 06/04/2023]
Abstract
The term 'wax bloom' is used to describe a thin whitish crystalline layer that develops on the surface of beeswax objects under specific conditions. This phenomenon is undesirable, especially in the cases of objects with aesthetic or informational value, such as wax sculptures or historical seals. A combination of solid-state NMR and FTIR measurements allowed to obtain fairly detailed insight into the problem and to suggest a probable mechanism of its development. Secondary crystallization of unsaturated hydrocarbons from beeswax was determined as a primary cause. After the macroscopic solidification of beeswax from the melt, these molecules remain for months in a highly mobile, liquid-like state. This facilitates their diffusion to the surface, where they eventually crystallize, forming the 'wax bloom' effect. Although these results are of particular interest with respect to the conservation of beeswax artifacts, they are relevant to this material in general and help with understanding its unique properties.
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Affiliation(s)
- B Bartl
- Institute of Chemical Technology, Prague, Department of Chemical Technology of Monument Conservation, Technická 5, 16628, Praha 6, Czech Republic
- National Archives in Prague, Archivní 4, 14901, Praha 4, Czech Republic
| | - L Kobera
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovského nám. 2, 16206, Praha 6, Czech Republic
| | - K Drábková
- Institute of Chemical Technology, Prague, Department of Chemical Technology of Monument Conservation, Technická 5, 16628, Praha 6, Czech Republic
| | - M Ďurovič
- Institute of Chemical Technology, Prague, Department of Chemical Technology of Monument Conservation, Technická 5, 16628, Praha 6, Czech Republic
| | - J Brus
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovského nám. 2, 16206, Praha 6, Czech Republic
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15
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Pi F, Kaneko F, Iwahashi M, Suzuki M, Ozaki Y. Solid-State Low Temperature → Middle Temperature Phase Transition of Linoleic Acid Studied by FTIR Spectroscopy. J Phys Chem B 2011; 115:6289-95. [DOI: 10.1021/jp200760p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fuwei Pi
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Fumitoshi Kaneko
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Makio Iwahashi
- Department of Chemistry, School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa-ken, 252-0373, Japan
| | - Masao Suzuki
- Research Institute of Biological Materials, Keihanna Research Laboratory, Hikaridai 1-7, Seika, Soraku, Kyoto 619-0237, Japan
| | - Yukihiro Ozaki
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
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16
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Pi F, Kaneko F, Shinzawa H, Suzuki M, Iwahashi M, Ozaki Y. Temperature Dependence of Structure and Dynamic Properties of Oleic Acid γ and α Phases Studied by FTIR Spectroscopy. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20100314] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Le Bouch N, Auger M, Leclerc M. Structure and Segmental Motions in a Substituted Polythiophene: A Solid-State NMR Study. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800365] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Abstract
This review article describes the applications of NMR to the study of polymorphs and related forms (solvates) of organic (especially pharmaceutical) compounds, for which it is of increasing academic and practical importance. The nature of the systems covered is briefly introduced, as are the techniques constituting solid-state NMR. The methodologies involved are then reviewed under a number of different headings, ranging from spectral editing through relaxation times to shielding tensors and NMR crystallography. In each case the relevant applications are described. Whilst most studies concentrate on structural matters, motional effects are not neglected. A special section discusses studies of solvates (especially hydrates), and another reviews quantitative analysis.
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Affiliation(s)
- Robin K Harris
- Department of Chemistry, University of Durham, South Road, Durham, UK DH1 3LE.
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19
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Polymorphism and solvatomorphism 2004. PROFILES OF DRUG SUBSTANCES, EXCIPIENTS, AND RELATED METHODOLOGY 2006. [PMID: 22469090 DOI: 10.1016/s0099-5428(05)32010-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
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