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Fruits of Vitex doniana sweet: toxicity profile, anti-inflammatory and antioxidant activities, and quantification of one of its bioactive constituents oleanolic acid. Heliyon 2021; 7:e07910. [PMID: 34522807 PMCID: PMC8424515 DOI: 10.1016/j.heliyon.2021.e07910] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/06/2021] [Accepted: 08/30/2021] [Indexed: 11/20/2022] Open
Abstract
Background Vitex doniana Sweet fruit, an under-utilised crop specie of Ghana, has not been validated for its ethnomedical use in managing inflammatory conditions. Therefore, the study sought to investigate its anti-inflammatory and antioxidant activities as well as isolate and quantify one of its active constituents. Materials and methods In-vivo anti-inflammatory activity of the methanol fruit extract was evaluated using the carrageenan-induced oedema model in chicks. The in-vitro antioxidant property was also investigated using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay. The acute and subacute toxicity studies of the fruit extract were evaluated in rodent models. Results No signs of autonomic and central nervous system stimulation/depression were recorded. The LD50 by oral route, was estimated to be beyond 3000 mg/kg. Subacute studies revealed an increase in red blood cell and lymphocyte counts. Liver enzymes, serum proteins and bilirubin levels did not significantly increase. The crude extracts at doses of 10, 30 and 100 mg/kg inhibited paw oedema considerably. The ethyl acetate fraction showed the highest antioxidant activity (IC50 = 99.35 ± 0.77 μg/mL). Oleanolic acid, isolated from the ethyl acetate extract, showed significant anti-inflammatory and antioxidant activities. A sensitive high-performance liquid chromatography method for the detection and estimation of oleanolic acid, as a biomarker compound for V. doniana fruit, was developed and validated for quality assurance purposes. Conclusion The extract of V. doniana fruits possesses considerable anti-inflammatory and antioxidant properties and was non-toxic under laboratory conditions.
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Abstract
PURPOSE OF REVIEW The olive tree (Olea europaea L.) has featured as a significant part of medicinal history, used to treat a variety of ailments within folk medicine. The Mediterranean diet, which is rich in olive products, is testament to Olea europaeas positive effects on health, associated with reduced incidences of cancer and cardiovascular disease. This review aims to summarise the current literature regarding the therapeutic potential of Olea europaea products in cancer, detailing the possible compounds responsible for its chemotherapeutic effects. RECENT FINDINGS Much of the existing research has focused on the use of cell culture models of disease, demonstrating Olea europaea extracts, and specific compounds within these extracts, have efficacy in a range of in vitro and in vivo cancer models. The source of Olea europaeas cytotoxicity is yet to be fully defined; however, compounds such as oleuropein and verbascoside have independent cytotoxic effects on animal models of cancer. Initial results from animal models are promising but need to be translated to a clinical setting. Treatments utilising these compounds are likely to be well tolerated and represent a promising direction for future research.
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Affiliation(s)
- Chrystalla Antoniou
- grid.6518.a0000 0001 2034 5266Faculty of Health and Life Sciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY UK
| | - Jonathon Hull
- grid.6518.a0000 0001 2034 5266Faculty of Health and Life Sciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY UK
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Rebora M, Salerno G, Piersanti S, Gorb E, Gorb S. Role of Fruit Epicuticular Waxes in Preventing Bactrocera oleae (Diptera: Tephritidae) Attachment in Different Cultivars of Olea europaea. INSECTS 2020; 11:E189. [PMID: 32192070 PMCID: PMC7142657 DOI: 10.3390/insects11030189] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/06/2020] [Accepted: 03/15/2020] [Indexed: 02/03/2023]
Abstract
The olive fruit fly Bactrocera oleae (Diptera: Tephritidae) is the major pest of cultivated olives (Olea europaea L.), and a serious threat in all of the Mediterranean Region. In the present investigation, we demonstrated with traction force experiments that B. oleae female adhesion is reduced by epicuticular waxes (EWs) fruit surface, and that the olive fruit fly shows a different ability to attach to the ripe olive surface of different cultivars of O. europaea (Arbequina, Carolea, Dolce Agogia, Frantoio, Kalamata, Leccino, Manzanilla, Picholine, Nostrale di Rigali, Pendolino and San Felice) in terms of friction force and adhesion, in relation with different mean values of olive surface wettability. Cryo-scanning morphological investigation revealed that the EW present on the olive surface of the different analyzed cultivars are represented by irregular platelets varying in the orientation, thus contributing to affect the surface microroughness and wettability in the different cultivars, and consequently the olive fruit fly attachment. Further investigations to elucidate the role of EW in olive varietal resistance to the olive fruit fly in relation to the olive developmental stage and environmental conditions could be relevant to develop control methods alternative to the use of harmful pesticides.
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Affiliation(s)
- Manuela Rebora
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06121 Perugia, Italy; (M.R.); (S.P.)
| | - Gianandrea Salerno
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno, 06121 Perugia, Italy
| | - Silvana Piersanti
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06121 Perugia, Italy; (M.R.); (S.P.)
| | - Elena Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University, Am Botanischen Garten 9, 24098 Kiel, Germany; (E.G.); (S.G.)
| | - Stanislav Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University, Am Botanischen Garten 9, 24098 Kiel, Germany; (E.G.); (S.G.)
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San Martín E, Avenoza A, Peregrina JM, Busto JH. Solvent-based strategy improves the direct determination of key parameters in edible fats and oils by 1 H NMR. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:1726-1734. [PMID: 31821564 DOI: 10.1002/jsfa.10193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Edible fats and oils are very important in nutrition and as a main source of energy and are also essential nutrients. There are several methods for the analysis of edible fats and oils, but nowadays nuclear magnetic resonance (NMR) is emerging as a powerful tool (albeit complex and high-tech demanding) to identify, quantify, and differentiate many types of food, including fats and oils. In this sense, the challenges of this technique are the simplification of methodology and taking advantage of a 400 MHz NMR instrument. RESULTS Through an adequate mixture of solvents, we have developed a methodology to quantify essential parameters in edible fats and oils, including 1,2-diacylglycerol, 1,3-diacylglycerol, and 1-monoacylglycerol, by using a single experiment and without the need for matrix derivatization. CONCLUSION This methodology has been successfully applied to the analysis of olive, sunflower, corn, sesame, and peanut oils, as well as butter, walnut, salmon, and spicy pork sausage. Moreover, the evolution of thermal oxidation and lipolysis of virgin olive oil and sunflower has been analyzed. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Emilio San Martín
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Logroño, Spain
| | - Alberto Avenoza
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Logroño, Spain
| | - Jesús M Peregrina
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Logroño, Spain
| | - Jesús H Busto
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Logroño, Spain
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Huang H, Burghardt M, Schuster AC, Leide J, Lara I, Riederer M. Chemical Composition and Water Permeability of Fruit and Leaf Cuticles of Olea europaea L. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:8790-8797. [PMID: 28880084 DOI: 10.1021/acs.jafc.7b03049] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The plant cuticle, protecting against uncontrolled water loss, covers olive (Olea europaea) fruits and leaves. The present study describes the organ-specific chemical composition of the cuticular waxes and the cutin and compares three developmental stages of fruits (green, turning, and black) with the leaf surface. Numerous organ-specific differences, such as the total coverage of cutin monomeric components (1034.4 μg cm-2 and 630.5 μg cm-2) and the cuticular waxes (201.6 μg cm-2 and 320.4 μg cm-2) among all three fruit stages and leaves, respectively, were detected. Water permeability as the main cuticular function was 5-fold lower in adaxial leaf cuticles (2.1 × 10-5 m s-1) in comparison to all three fruit stages (9.5 × 10-5 m s-1). The three fruit developmental stages have the same cuticular water permeability. It is hypothesized that a higher weighted average chain length of the acyclic cuticular components leads to a considerably lower permeability of the leaf as compared to the fruit cuticle.
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Affiliation(s)
- Hua Huang
- Julius von Sachs Institute of Biosciences, University of Würzburg , Würzburg D-97082, Germany
| | - Markus Burghardt
- Julius von Sachs Institute of Biosciences, University of Würzburg , Würzburg D-97082, Germany
| | - Ann-Christin Schuster
- Julius von Sachs Institute of Biosciences, University of Würzburg , Würzburg D-97082, Germany
| | - Jana Leide
- Julius von Sachs Institute of Biosciences, University of Würzburg , Würzburg D-97082, Germany
| | - Isabel Lara
- Department of Chemistry, Unitat de Postcollita-XaRTA, AGROTÈCNIO, Universitat de Lleida , E-25003 Lleida, Spain
| | - Markus Riederer
- Julius von Sachs Institute of Biosciences, University of Würzburg , Würzburg D-97082, Germany
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Ruiz-Aracama A, Goicoechea E, Guillén MD. Direct study of minor extra-virgin olive oil components without any sample modification. 1 H NMR multisupression experiment: A powerful tool. Food Chem 2017; 228:301-314. [DOI: 10.1016/j.foodchem.2017.02.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 01/26/2017] [Accepted: 02/02/2017] [Indexed: 10/20/2022]
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Dubey P, Sharma P, Kumar V. Structural profiling of wax biopolymer from Pinus roxburghii Sarg. needles using spectroscopic methods. Int J Biol Macromol 2017; 104:261-273. [PMID: 28596007 DOI: 10.1016/j.ijbiomac.2017.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 05/07/2017] [Accepted: 06/03/2017] [Indexed: 10/19/2022]
Abstract
Pinus roxburghii Sarg. is the most abundant species in Himalayan region. The needles of the species largely contribute to the forest biomass and remain the major cause of forest fires leading to climate change, biodiversity loss, etc. Intriguingly, the layer of needles contains wax, a biomacromolecule with potential chemical functionalities for value addition. In the present study, a distinctive approach towards complete structural analysis of the isolated wax in its native state has been done using 1H, 13C, HSQC, HMBC, COSY, TOCSY along with GC-MS of the methyl esters of constituent fatty acids. The wax was isolated in a quantitative yield of 1.64% and analyses suggest that it is a polymer of linearly attached fatty acid esters which on hydrolysis yielded three types of ω-hydroxy fatty acids viz. 12-hydroxydodecanoic acid, 14-hydroxytetradecanoic acid and 16-hydroxyhexadecanoic acid in a ratio of 1:1:2 respectively. Complete assignments for a carbonyl group, α-, β- and other methylenes present in wax were achieved; corroborating the presence of polyester. In particular, identification of wax structure was accomplished through NMR; thereby providing a lead towards future structural analysis of waxes in their native form. The study would also be helpful to generate commercially important compounds derived from pine needle wax. This will offer an opportunity for utilisation of pine needle biomass: a root cause of Himalayan forest fires.
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Affiliation(s)
- Pallavi Dubey
- Chemistry Division, Forest Research Institute, Dehradun, India
| | - Pradeep Sharma
- Chemistry Division, Forest Research Institute, Dehradun, India
| | - Vineet Kumar
- Chemistry Division, Forest Research Institute, Dehradun, India.
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Neuroprotection by Combined Administration with Maslinic Acid, a Natural Product from Olea europaea, and MK-801 in the Cerebral Ischemia Model. Molecules 2016; 21:molecules21081093. [PMID: 27548129 PMCID: PMC6274070 DOI: 10.3390/molecules21081093] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 08/15/2016] [Accepted: 08/17/2016] [Indexed: 01/01/2023] Open
Abstract
Glutamate-mediated excitotoxicity is a major cause of ischemic brain damage. MK-801 confers neuroprotection by attenuating the activation of the N-methyl-d-aspartate (NMDA) receptor, but it failed in clinical use due to the short therapeutic window. Here we aim to investigate the effects of maslinic acid, a natural product from Olea europaea, on the therapeutic time window and dose range for the neuroprotection of MK-801. Rats were administered with maslinic acid intracerebroventricularly and cerebral ischemia was induced by middle cerebral artery occlusion (MCAO) followed by reperfusion. MK-801 was administered at 1 h, 2 h, 3 h and 4 h after ischemia, respectively. The cerebral infarct volume was determined by 2,3,5-Triphenyltetrazolium chloride (TTC) staining, neuronal damage was assessed by Haematoxylin Eosin (H&E) staining, and the expression of glial glutamate transporters and glial fibrillary acidic protein (GFAP) was evaluated by immunohistochemistry and Western blot post-ischemia. Results showed that the presence of maslinic acid extended the therapeutic time window for MK-801 from 1 h to 3 h. Co-treatment of maslinic acid and MK-801 at a subthreshold dosage obviously induced neuroprotection after ischemia. The combination of these two compounds improved the outcome in ischemic rats. Moreover, maslinic acid treatment promoted the expression of GLT-1 and GFAP post-ischemia. These data suggest that the synergistic effect of maslinic acid on neurological protection might be associated with the improvement of glial function, especially with the increased expression of GLT-1. The combination therapy of maslinic acid and MK-801 may prove to be a potential strategy for treating acute ischemic stroke.
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Vichi S, Cortés-Francisco N, Caixach J, Barrios G, Mateu J, Ninot A, Romero A. Epicuticular Wax in Developing Olives (Olea europaea) Is Highly Dependent upon Cultivar and Fruit Ripeness. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5985-94. [PMID: 27403567 DOI: 10.1021/acs.jafc.6b02494] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The epicuticular wax (EW) layer is located on the surface of most plant organs. It provides the cuticle with most of its properties and is the primary barrier against biotic and abiotic stress. Despite the importance of Olea europaea cultivation, few studies have characterized the EW covering leaves and olives, which could be involved in resistance to both infection and environmental conditions. In the present study, wide-ranging screening was carried out using direct-injection electrospray ionization coupled to high-resolution mass spectrometry to analyze EW in developing olives of nine varieties. The proportions of EW fractions [wax esters (WEs), diacylglycerols, triacylglycerols (TAGs), triterpenic acids, and aldehydes] strongly depended upon the olive cultivar and, in only a few cases, were influenced by the sampling date. The specific compositions of the major fractions, WEs and TAGs, were strictly related to the cultivar, while the degree of unsaturation and chain length of the WEs evolved throughout the 4 weeks prior to the olive turning color.
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Affiliation(s)
- Stefania Vichi
- Nutrition, Food Science and Gastronomy Department, Catalonian Reference Network on Food Technology (XaRTA), Institute for Research on Nutrition and Food Safety (INSA), University of Barcelona , Food and Nutrition Torribera Campus, Avenida Prat de la Riba 171, 08921 Santa Coloma de Gramenet, Spain
| | - Nuria Cortés-Francisco
- Laboratory of the Public Health Agency of Barcelona , Avenida de les Drassanes 13, 08001 Barcelona, Spain
| | - Josep Caixach
- Mass Spectrometry Laboratory/Organic Pollutants, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC) , Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Gonçal Barrios
- Section of Agriculture and Plant Health, Territorial Service of Tarragona, Ministry of Agriculture, Livestock, Fisheries and Food, Catalonian Government , Avenida Catalunya 50, 3a, 43002 Tarragona, Spain
| | - Jordi Mateu
- Section of Agriculture and Plant Health, Territorial Service of Tarragona, Ministry of Agriculture, Livestock, Fisheries and Food, Catalonian Government , Avenida Catalunya 50, 3a, 43002 Tarragona, Spain
| | - Antonia Ninot
- Olive Production, Oil Processing and Nut Trees, Institute for Food and Agricultural Research and Technology (IRTA) , Mas de Bover, Carretera de Reus El Morell, 43120 Constantí, Tarragona, Spain
| | - Agustí Romero
- Olive Production, Oil Processing and Nut Trees, Institute for Food and Agricultural Research and Technology (IRTA) , Mas de Bover, Carretera de Reus El Morell, 43120 Constantí, Tarragona, Spain
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Vichi S, Cortés-Francisco N, Romero A, Caixach J. Direct chemical profiling of olive (Olea europaea) fruit epicuticular waxes by direct electrospray-ultrahigh resolution mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:558-566. [PMID: 25800192 DOI: 10.1002/jms.3562] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/07/2014] [Accepted: 12/10/2014] [Indexed: 06/04/2023]
Abstract
In the present paper, an electrospray ionization (ESI)-Orbitrap method is proposed for the direct chemical profiling of epicuticular wax (EW) from Olea europaea fruit. It constitutes a rapid and efficient tool suitable for a wide-ranging screening of a large number of samples. In a few minutes, the method provides a comprehensive characterization of total EW extracts, based on the molecular formula of their components. Accurate mass measurements are obtained by ultrahigh resolution mass spectrometry, and compositional restrictions are set on the basis of the information available from previous studies of olive EW. By alternating positive and negative ESI modes within the same analysis, complementary results are obtained and a wide range of chemical species is covered. This provides a detailed compositional overview that otherwise would only be available by applying multiple analytical techniques.
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Affiliation(s)
- Stefania Vichi
- Food Science and Nutrition Department, XaRTA (Catalonian Reference Network on Food Technology), University of Barcelona, Food and Nutrition Torribera Campus, Av. Prat de la Riba, 171. 08921, S.ta Coloma de Gramenet, Spain
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Hashmi MA, Khan A, Hanif M, Farooq U, Perveen S. Traditional Uses, Phytochemistry, and Pharmacology of Olea europaea (Olive). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2015; 2015:541591. [PMID: 25802541 PMCID: PMC4352757 DOI: 10.1155/2015/541591] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/18/2015] [Accepted: 01/25/2015] [Indexed: 01/18/2023]
Abstract
Aim of the Review. To grasp the fragmented information available on the botany, traditional uses, phytochemistry, pharmacology, and toxicology of Olea europaea to explore its therapeutic potential and future research opportunities. Material and Methods. All the available information on O. europaea was collected via electronic search (using Pubmed, Scirus, Google Scholar, and Web of Science) and a library search. Results. Ethnomedical uses of O. europaea are recorded throughout the world where it has been used to treat various ailments. Phytochemical research had led to the isolation of flavonoids, secoiridoids, iridoids, flavanones, biophenols, triterpenes, benzoic acid derivatives, isochromans, and other classes of secondary metabolites from O. europaea. The plant materials and isolated components have shown a wide spectrum of in vitro and in vivo pharmacological activities like antidiabetic, anticonvulsant, antioxidant, anti-inflammatory, immunomodulatory, analgesic, antimicrobial, antiviral, antihypertensive, anticancer, antihyperglycemic, antinociceptive, gastroprotective, and wound healing activities. Conclusions. O. europaea emerged as a good source of traditional medicine for the treatment of various ailments. The outcomes of phytochemical and pharmacological studies reported in this review will further expand its existing therapeutic potential and provide a convincing support to its future clinical use in modern medicine.
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Affiliation(s)
- Muhammad Ali Hashmi
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Afsar Khan
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Muhammad Hanif
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Shagufta Perveen
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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Maslinic acid, a triterpenic anti-tumoural agent, interferes with cytoskeleton protein expression in HT29 human colon-cancer cells. J Proteomics 2013; 83:15-25. [PMID: 23499989 DOI: 10.1016/j.jprot.2013.02.031] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 01/31/2013] [Accepted: 02/25/2013] [Indexed: 12/14/2022]
Abstract
UNLABELLED Maslinic acid (MA) is an anti-tumoural agent which shows potent anti-proliferative properties against the HT29 colon-cancer cells. To shed light upon the active mechanism of MA we have investigated its effects upon the cytoskeleton. We used a proteomics procedure based on two-dimensional gel electrophoresis, mass analysis and peptide mass fingerprinting. The incubation of HT29 cells with MA led to G1 cell-cycle arrest. After 24hours' exposure to 3.7μM (IC50/8) and 30μM (IC50) MA fourteen differentially expressed cytoskeletal proteins could be discerned. One group of these proteins, made up of keratin 2, keratin 8, keratin type II cytoskeletal 8, keratin type I cytoskeletal 9, keratin type I cytoskeletal 18, cytokeratins 18 and 19, and β-actin, exert a structural function, whilst another group, made up of lamin B1, gelsolin 1, septin 2, villin 1, actin-related protein 2 and moesin, is related to the nucleation of actin and cytoskeleton formation. Changes in the expression of moesin, villin 1 and β-actin identified by the proteomics techniques were corroborated by Western blotting. This is the first evidence obtained of the regulatory effects of MA on the cytoskeleton, which may prove to be one of the bases of its anti-proliferative effect against colon-cancer cells. BIOLOGICAL SIGNIFICANCE In this paper we describe the changes in the expression of different cytoskeleton proteins identified by the proteomics techniques and corroborated by Western blotting. This is the first evidence obtained of the regulatory effects of MA on the cytoskeleton, which may prove to be one of the bases of its anti-proliferative effect against colon-cancer cells.
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Mbosso EJT, Wintjens R, Lenta BN, Ngouela S, Rohmer M, Tsamo E. Chemical constituents from Glyphaea brevis and Monodora myristica: chemotaxonomic significance. Chem Biodivers 2013; 10:224-32. [PMID: 23418169 DOI: 10.1002/cbdv.201100378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Indexed: 11/10/2022]
Abstract
A chemical investigation of the Glyphaea brevis leaves and of the Monodora myristica fruits led to the identification of thirteen compounds, seven linear long-chain aliphatic compounds, 1, 2, 4, 6, and 9-11, three steroids, 3a, 3b, and 7, two triterpenes, 5a and 5b, and one polyol, 8. The compounds 2 and 8, previously mentioned in the literature, are here characterized by their complete (1)H- and (13)C-NMR assignments. This is the first report of a full NMR assignment for linear fatty acid esters of aliphatic primary alcohols and for meso-erythritol. Compound 5b and 8 were isolated for the first time from plant extracts of the Tiliaceae family, and compounds 9-11 from the Annonaceae plant family. Our results constitute the basis for further chemotaxonomic studies on the two species.
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Affiliation(s)
- Emmanuel Jean Teinkela Mbosso
- Laboratoire des biopolymères et des nanomatériaux supramoléculaires, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus Plaine (CP 206/4), boulevard du Triomphe, B-1050 Brussels, Belgium.
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Palomino-Schätzlein M, Escrig PV, Boira H, Primo J, Pineda-Lucena A, Cabedo N. Evaluation of nonpolar metabolites in plant extracts by 13C NMR spectroscopy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:11407-11416. [PMID: 21955286 DOI: 10.1021/jf2030902] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
(13)C nuclear magnetic resonance (NMR) spectroscopy was explored as a simple and efficient technique for the quantitative analysis of nonpolar metabolites in plants. The method was first optimized with a mixture of known metabolites and then applied to the nonpolar leaf extracts of plants harvested in the Valencian community (eastern Spain) belonging to three different genera: Euphorbia (Euphorbiaceae), Araujia (Apocynaceae), and Morus (Moraceae). Furthermore, an exhaustive analysis of Euphorbia characias leaf and stem extracts from different geographic locations allowed that quantitative (13)C NMR spectroscopy is a suitable tool for metabolic profiling purpose.
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Affiliation(s)
- Martina Palomino-Schätzlein
- Servicio de Resonancia Magnética Nuclear, Centro de Investigación Príncipe Felipe, Avenida Autopista del Saler 16, 46012 Valencia, Spain
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Consonni R, Cagliani LR, Cogliati C. NMR based geographical characterization of roasted coffee. Talanta 2011; 88:420-6. [PMID: 22265520 DOI: 10.1016/j.talanta.2011.11.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 10/21/2011] [Accepted: 11/01/2011] [Indexed: 11/20/2022]
Abstract
The increasing attention for food quality and safety led to develop several analytical techniques suitable to address these demands. Coffee has been already demonstrated to represent a worldwide appreciated beverage and its high economical value could induce frauds or adulteration practices involving both compositional and geographical aspects. In the last years, metabolic profiling revealed to be suitable to face the quality determination of food matrices and NMR confirmed its potentiality in metabolites characterization. The present study reports the capability of NMR spectroscopy to investigate the metabolite content of roasted Coffea arabica samples from the three main production areas, America, Africa and Asia. OPLS-DA models performed on (1)H NMR data led to a clear separation of samples according to their origin: fatty acids, chlorogenic acids and lactate and finally acetate and trigonelline resulted the main compounds characterizing the American, African and Asian samples respectively. The analytical approach here presented confirmed the potentiality of the joined NMR analysis and statistical treatments in quality determination of food matrices.
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Affiliation(s)
- Roberto Consonni
- Istituto per lo Studio delle Macromolecole, Lab. NMR, CNR, v. Bassini 15, 20133 Milan, Italy.
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Qian Y, Guan T, Tang X, Huang L, Huang M, Li Y, Sun H. Maslinic acid, a natural triterpenoid compound from Olea europaea, protects cortical neurons against oxygen-glucose deprivation-induced injury. Eur J Pharmacol 2011; 670:148-53. [PMID: 21839077 DOI: 10.1016/j.ejphar.2011.07.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Revised: 06/17/2011] [Accepted: 07/24/2011] [Indexed: 10/17/2022]
Abstract
Maslinic acid is a triterpenoid compound present in plants of Olea europaea. This compound has been reported to have potent antioxidant, anti-cancer, anti-HIV and anti-inflammatory activities. In this study, we investigated the neuroprotective effect of maslinic acid and its mechanism of action. With presence or absence of maslinic acid, cortical neurons were subjected to 1h of oxygen-glucose deprivation and 24h of reoxygenation. Cell injury was determined by lactate dehydrogenase (LDH) measurement and 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyl-tetrazolium bromide (MTT) assay. Neuronal apoptosis was evaluated by flow cytometry assay, caspase-3 expression/activity, caspase-9 activity and Bcl-2/Bax ratio. Nitric Oxide (NO) production and inducible nitric oxide synthase (iNOS) expression were also detected. Results showed that maslinic acid dose-dependently ameliorated neuron injury and apoptosis. Maslinic acid treatment normalized the caspase expression/activation and increased the Bcl-2/Bax ratio. In addition, maslinic acid inhibited oxygen-glucose deprivation-induced NO production and iNOS expression. These results indicated that maslinic acid has beneficial effects on hypoxic neurons by suppressing iNOS activation, which may, in turn, provide neuroprotection.
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Affiliation(s)
- Yisong Qian
- Department of Physiology, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing 210009, PR China
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18
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Mbosso EJT, Ngouela S, Nguedia JCA, Beng VP, Rohmer M, Tsamo E. In vitro antimicrobial activity of extracts and compounds of some selected medicinal plants from Cameroon. JOURNAL OF ETHNOPHARMACOLOGY 2010; 128:476-81. [PMID: 20093175 DOI: 10.1016/j.jep.2010.01.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2009] [Revised: 11/20/2009] [Accepted: 01/06/2010] [Indexed: 05/23/2023]
Abstract
AIM OF THE STUDY Seven extracts and eight compounds from four selected Cameroonian medicinal plants, Solanecio mannii Hook f. (Asteraceae), Monodora myristica Dunal (Annonaceae), Albizia gummifera (J.F. Gmel) C.A. Smith (Fabaceae/Mimosoideae) and Glyphaea brevis (Spreng) Monachino (Tiliaceae), traditionally used for the treatment of hepatitis, parasites and other infectious diseases, were tested in vitro for their antimicrobial activity against Gram-positive (5 species) and Gram-negative (4 species) bacteria species and pathogenic yeasts (2 Candida species), to establish whether or not they have antimicrobial activity and to validate scientifically their use in traditional medicine. MATERIALS AND METHODS The agar disc diffusion and the microbroth dilution methods were used to determine the zone of inhibition between the edge of the filter paper and the edge of the inhibition area (IZ) and the minimal inhibitory concentration (MIC) respectively. RESULTS The most active extracts against Candida albicans and Candida krusei were respectively the cyclohexane extract from the fruits of Monodora myristica and the ethyl acetate extract from the stem bark of Albizia gummifera (MIC=6.3 microg/ml for both extracts). The lowest MIC value (1.6 microg/ml) for purified compounds was obtained on Candida albicans with a mixture of linear aliphatic primary alcohols (n-C24H50O to n-C30H62O), with n-hexacosanol (1b) as major compound and mixture of fatty acid esters of diunsaturated linear 1,2-diols (6). CONCLUSION These results afford ground informations for the potential use of the crude extracts of these species as well as of some of the isolated compounds in bacterial and fungal infections.
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Affiliation(s)
- Emmanuel Jean Teinkela Mbosso
- Laboratoire de Substances Naturelles et Synthèse Organique, Département de Chimie Organique, Faculté des Sciences, Université de Yaoundé I, BP 812 Yaoundé, Cameroon
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