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Mandrich L, Esposito AV, Costa S, Caputo E. Chemical Composition, Functional and Anticancer Properties of Carrot. Molecules 2023; 28:7161. [PMID: 37894640 PMCID: PMC10608851 DOI: 10.3390/molecules28207161] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Plants are a valuable source of drugs for cancer treatment. Daucus carota has been investigated for its health properties. In particular, Daucus carota L. subsp. Sativus, the common edible carrot root, has been found to be rich in bioactive compounds such as carotenoids and dietary fiber and contains many other functional components with significant health-promoting features, while Daucus carota L. subsp. Carrot (Apiacae), also known as wild carrot, has been usually used for gastric ulcer therapy, diabetes, and muscle pain in Lebanon. Here, we review the chemical composition of Daucus carota L. and the functional properties of both edible and wild carrot subspecies. Then, we focus on compounds with anticancer characteristics identified in both Daucus carota subspecies, and we discuss their potential use in the development of novel anticancer therapeutic strategies.
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Affiliation(s)
- Luigi Mandrich
- Research Institute on Terrestrial Ecosystems-IRET-CNR, Via Pietro Castellino 111, 80131 Naples, Italy;
| | - Antonia Valeria Esposito
- Institute of Genetics and Biophysics-IGB-CNR, “A. Buzzati-Traverso”, Via Pietro Castellino 111, 80131 Naples, Italy; (A.V.E.); (S.C.)
| | - Silvio Costa
- Institute of Genetics and Biophysics-IGB-CNR, “A. Buzzati-Traverso”, Via Pietro Castellino 111, 80131 Naples, Italy; (A.V.E.); (S.C.)
| | - Emilia Caputo
- Institute of Genetics and Biophysics-IGB-CNR, “A. Buzzati-Traverso”, Via Pietro Castellino 111, 80131 Naples, Italy; (A.V.E.); (S.C.)
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2
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Pathways Affected by Falcarinol-Type Polyacetylenes and Implications for Their Anti-Inflammatory Function and Potential in Cancer Chemoprevention. Foods 2023; 12:foods12061192. [PMID: 36981118 PMCID: PMC10048309 DOI: 10.3390/foods12061192] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Polyacetylene phytochemicals are emerging as potentially responsible for the chemoprotective effects of consuming apiaceous vegetables. There is some evidence suggesting that polyacetylenes (PAs) impact carcinogenesis by influencing a wide variety of signalling pathways, which are important in regulating inflammation, apoptosis, cell cycle regulation, etc. Studies have shown a correlation between human dietary intake of PA-rich vegetables with a reduced risk of inflammation and cancer. PA supplementation can influence cell growth, gene expression and immunological responses, and has been shown to reduce the tumour number in rat and mouse models. Cancer chemoprevention by dietary PAs involves several mechanisms, including effects on inflammatory cytokines, the NF-κB pathway, antioxidant response elements, unfolded protein response (UPR) pathway, growth factor signalling, cell cycle progression and apoptosis. This review summarises the published research on falcarinol-type PA compounds and their mechanisms of action regarding cancer chemoprevention and also identifies some gaps in our current understanding of the health benefits of these PAs.
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3
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Interactions between stipuol enantiomers and human serum albumin. Food Chem 2022; 385:132686. [PMID: 35299022 DOI: 10.1016/j.foodchem.2022.132686] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/20/2022]
Abstract
Natural polyacetylenes occur in food and herbal plants, have a wide range of bioactivities, and are recognized as important nutraceuticals. Stipuol is a natural polyacetylene present in the edible plant Panax notoginseng. The present study was aimed to study interactions of rac-stipuol and its enantiomers with human serum albumin (HSA) using multi-spectroscopic, molecular modeling and microscale thermophoresis. Steady-state and time-resolved fluorescence spectra manifest that the fluorescence quenching mechanism is mainly static in type. The bindings of (S)-stipuol, (R)-stipuol, rac-stipuol lead to some microenvironmental and slight conformational changes of HSA. Competitive ligand displacement experiments and molecular modeling studies revealed that stipuol enantiomers bind to HSA at subdomain III (site IIA). The calculated values of Ka and Kd showed that (R)-stipuol had a stronger binding affinity than (S)-stipuol. The results are informative for use of stipuol as a nutraceutical to improve human health.
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Green BT, Stonecipher CA, Welch KD, Lee ST, Cook D. Evaluation of diazepam as a drug treatment for water hemlock (Cicuta species) poisoning in Spanish goats. Toxicon 2022; 205:79-83. [PMID: 34871669 DOI: 10.1016/j.toxicon.2021.12.003] [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: 11/01/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 11/17/2022]
Abstract
Water hemlocks (Cicuta spp.) are toxic members of the Apiaceae plant family. The best drug treatment for the convulsions associated with acute water hemlock poisoning in livestock and humans has not been determined experimentally. This work compared the therapeutic actions of benzodiazepines (diazepam) and barbiturates (phenobarbital) on water hemlock poisoning in a goat model. C. maculata tubers were orally dosed to goats. Experimental groups consisted of; control saline; 20 mg/kg phenobarbital; 1.0 mg/kg diazepam; 10 mg/kg diazepam; and 1.0 mg/kg diazepam administered as needed to moderate convulsions by intravenous (i.v.) infusion. Diazepam provided nearly instant control of convulsions. Clinical signs of poisoning were completely controlled for the duration of the experiment in the goats that received the 10 mg/kg diazepam dose. These results suggest that diazepam is effective at managing the clinical signs of water hemlock poisoning in goats. We speculate that diazepam can be used as a potential treatment for water hemlock poisoning in other livestock species and humans.
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Affiliation(s)
- Benedict T Green
- Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Logan, UT, USA.
| | - Clinton A Stonecipher
- Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Logan, UT, USA
| | - Kevin D Welch
- Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Logan, UT, USA
| | - Stephen T Lee
- Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Logan, UT, USA
| | - Daniel Cook
- Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Logan, UT, USA
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5
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Lee MR, Dukan E, Milne I. Three poisonous plants (Oenanthe, Cicuta and Anamirta) that antagonise the effect of γ-aminobutyric acid in human brain. J R Coll Physicians Edinb 2021; 50:80-86. [PMID: 32539046 DOI: 10.4997/jrcpe.2020.121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Although we are familiar with common British plants that are poisonous, such as Atropa belladonna (deadly nightshade) and Aconitum napellus (monkshood), the two most poisonous plants in the British Flora are Oenanthe crocata (dead man's fingers) and Cicuta virosa (cowbane). In recent years their poisons have been shown to be polyacetylenes (n-C2H2). The plants closely resemble two of the most common plants in the family Apiaceae (Umbelliferae), celery and parsley. Unwittingly, they are ingested by naive foragers and death occurs very rapidly. The third plant Anamirta derives from South-East Asia and contains a powerful convulsant, picrotoxin, which has been used from time immemorial to catch fish, and more recently to poison Birds of Paradise. All three poisons have been shown to block the γ-aminobutyric acid (GABA) system in the human brain that normally has a powerful inhibitory neuronal action. It has also been established that two groups of sedative drugs, barbiturates and benzodiazepines, exert their inhibitory action by stimulating the GABA system. These drugs are the treatments of choice for poisoning by the three vicious plants.
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Affiliation(s)
- Michael R Lee
- 112 Polwarth Terrace, Merchiston, Edinburgh, EH11 1NN, UK
| | - Estela Dukan
- Royal College of Physicians of Edinburgh, Edinburgh, UK
| | - Iain Milne
- Royal College of Physicians of Edinburgh, Edinburgh, UK
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6
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Sousa RMOF, Cunha AC, Fernandes-Ferreira M. The potential of Apiaceae species as sources of singular phytochemicals and plant-based pesticides. PHYTOCHEMISTRY 2021; 187:112714. [PMID: 33845406 DOI: 10.1016/j.phytochem.2021.112714] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 01/31/2021] [Accepted: 02/21/2021] [Indexed: 05/23/2023]
Abstract
The Apiaceae Lindl. (=Umbelliferae Juss.), which includes several economical important vegetables, herbs, and spices, is one of the most numerous plant family. Umbelliferous crops (namely anise, fennel, carrot, coriander, parsley, etc.) are also valuable sources of botanical flavoring agents and fragrances. In addition, Apiaceae species yield a wide variety of distinctive specialized metabolites (i.e, volatile phenylpropanoids, furanocoumarins, sesquiterpene coumarins, polyacetylenes, and phthalides), some of them been described as uncommon natural phytochemicals exclusive of the family, which offers a great potential for bioprospection. Numerous studies have pointed out the outstanding biological activity of extracts and several classes of phytochemicals from Apiaceae species. Emphasis has been given to essential oils (EOs) and their constituents activities, most likely because this type of plant added value product benefits from a larger acceptance and application potential in integrated pest management (IPM) and integrated vector management (IVM) programs. Several species of the family offer a variety of unique compounds with great potential as biopesticidal and/or synergizing agents. Investigations covering their activity toward agricultural pests and phytopathogens have increased in the last years, nevertheless the interest remains strongly focus on arthropod species, predominantly those acting as vectors of human diseases. From our survey, it is patent the gap of knowledge concerning the potential molluscicidal properties of Apiaceae extracts/phytochemicals, as well as their herbicidal activities against invasive plant species. In this review, we propose to highlight the potential of Apiaceae species as suitable sources of bioactive phytochemicals with great relevance within the frame of plant-based pesticides R&D, and will discuss their applicability in real-world scenarios considering the recent developments regarding the design of stable formulations incorporating Apiaceae bioactive products. We expect that this review will encourage researchers to consider undervalued Apiaceae species as alternative sources of bioactive compounds and will give a contribute to the field by suggesting new research topics.
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Affiliation(s)
- Rose Marie O F Sousa
- Biology Department, Faculty of Science, University of Porto, Rua Do Campo Alegre S/n, 4169-007, Porto, Portugal; GreenUPorto - Sustainable Agrifood Production, Research Centre, Department of Biology, Faculty of Science, University of Porto, Rua Do Campo Alegre S/n, 4169-007, Porto, Portugal; CITAB, Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Universidade de Trás-os-Montes e Alto Douro, 5000-801, Vila Real, Portugal.
| | - Ana C Cunha
- CITAB, Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Universidade de Trás-os-Montes e Alto Douro, 5000-801, Vila Real, Portugal; Biology Department & CBMA - Centre of Molecular and Environmental Biology (CBMA), School of Sciences, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal.
| | - Manuel Fernandes-Ferreira
- Biology Department, Faculty of Science, University of Porto, Rua Do Campo Alegre S/n, 4169-007, Porto, Portugal; GreenUPorto - Sustainable Agrifood Production, Research Centre, Department of Biology, Faculty of Science, University of Porto, Rua Do Campo Alegre S/n, 4169-007, Porto, Portugal; CITAB, Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Universidade de Trás-os-Montes e Alto Douro, 5000-801, Vila Real, Portugal; MAPPROD Lda, Rua António de Mariz, 22, 4715-279, Braga, Portugal.
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7
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Stegelmeier BL, Davis TZ, Clayton MJ. Neurotoxic Plants that Poison Livestock. Vet Clin North Am Food Anim Pract 2020; 36:673-688. [PMID: 33032698 DOI: 10.1016/j.cvfa.2020.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
In the western United States, poisonous plants most often affect grazing livestock, and the related livestock losses are estimated to cost the grazing livestock industry more than $200 million annually. Many of these toxic plants contain neurotoxins that damage or alter the function of neurologic cells in the central and peripheral nervous systems. The objectives of this article are to present common North American neurotoxic plants, including conditions of poisoning, clinical disease, pathologic changes, and available diagnostics, to identify poisoned animals and the potential prognosis for poisoned animals.
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Affiliation(s)
- Bryan L Stegelmeier
- USDA/ARS Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, UT 84341, USA.
| | - T Zane Davis
- USDA/ARS Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, UT 84341, USA
| | - Michael J Clayton
- USDA/ARS Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, UT 84341, USA
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8
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Cao TQ, Vu NK, Woo MH, Min BS. New polyacetylene and other compounds from Bupleurum chinense and their chemotaxonomic significance. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Bioactive C 17 and C 18 Acetylenic Oxylipins from Terrestrial Plants as Potential Lead Compounds for Anticancer Drug Development. Molecules 2020; 25:molecules25112568. [PMID: 32486470 PMCID: PMC7321150 DOI: 10.3390/molecules25112568] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 05/29/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023] Open
Abstract
Bioactive C17 and C18 acetylenic oxylipins have shown to contribute to the cytotoxic, anti-inflammatory, and potential anticancer properties of terrestrial plants. These acetylenic oxylipins are widely distributed in plants belonging to the families Apiaceae, Araliaceae, and Asteraceae, and have shown to induce cell cycle arrest and/or apoptosis of cancer cells in vitro and to exert a chemopreventive effect on cancer development in vivo. The triple bond functionality of these oxylipins transform them into highly alkylating compounds being reactive to proteins and other biomolecules. This enables them to induce the formation of anti-inflammatory and cytoprotective phase 2 enzymes via activation of the Keap1–Nrf2 signaling pathway, inhibition of proinflammatory peptides and proteins, and/or induction of endoplasmic reticulum stress, which, to some extent, may explain their chemopreventive effects. In addition, these acetylenic oxylipins have shown to act as ligands for the nuclear receptor PPARγ, which play a central role in growth, differentiation, and apoptosis of cancer cells. Bioactive C17 and C18 acetylenic oxylipins appear, therefore, to constitute a group of promising lead compounds for the development of anticancer drugs. In this review, the cytotoxic, anti-inflammatory and anticancer effects of C17 and C18 acetylenic oxylipins from terrestrial plants are presented and their possible mechanisms of action and structural requirements for optimal cytotoxicity are discussed.
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10
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Mahendra CK, Tan LTH, Lee WL, Yap WH, Pusparajah P, Low LE, Tang SY, Chan KG, Lee LH, Goh BH. Angelicin-A Furocoumarin Compound With Vast Biological Potential. Front Pharmacol 2020; 11:366. [PMID: 32372949 PMCID: PMC7176996 DOI: 10.3389/fphar.2020.00366] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/10/2020] [Indexed: 12/14/2022] Open
Abstract
Angelicin, a member of the furocoumarin group, is related to psoralen which is well known for its effectiveness in phototherapy. The furocoumarins as a group have been studied since the 1950s but only recently has angelicin begun to come into its own as the subject of several biological studies. Angelicin has demonstrated anti-cancer properties against multiple cell lines, exerting effects via both the intrinsic and extrinsic apoptotic pathways, and also demonstrated an ability to inhibit tubulin polymerization to a higher degree than psoralen. Besides that, angelicin too demonstrated anti-inflammatory activity in inflammatory-related respiratory and neurodegenerative ailments via the activation of NF-κB pathway. Angelicin also showed pro-osteogenesis and pro-chondrogenic effects on osteoblasts and pre-chondrocytes respectively. The elevated expression of pro-osteogenic and chondrogenic markers and activation of TGF-β/BMP, Wnt/β-catenin pathway confirms the positive effect of angelicin bone remodeling. Angelicin also increased the expression of estrogen receptor alpha (ERα) in osteogenesis. Other bioactivities, such as anti-viral and erythroid differentiating properties of angelicin, were also reported by several researchers with the latter even displaying an even greater aptitude as compared to the commonly prescribed drug, hydroxyurea, which is currently on the market. Apart from that, recently, a new application for angelicin against periodontitis had been studied, where reduction of bone loss was indirectly caused by its anti-microbial properties. All in all, angelicin appears to be a promising compound for further studies especially on its mechanism and application in therapies for a multitude of common and debilitating ailments such as sickle cell anaemia, osteoporosis, cancer, and neurodegeneration. Future research on the drug delivery of angelicin in cancer, inflammation and erythroid differentiation models would aid in improving the bioproperties of angelicin and efficacy of delivery to the targeted site. More in-depth studies of angelicin on bone remodeling, the pro-osteogenic effect of angelicin in various bone disease models and the anti-viral implications of angelicin in periodontitis should be researched. Finally, studies on the binding of angelicin toward regulatory genes, transcription factors, and receptors can be done through experimental research supplemented with molecular docking and molecular dynamics simulation.
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Affiliation(s)
- Camille Keisha Mahendra
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Subang Jaya, Malaysia
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Subang Jaya, Malaysia
| | - Loh Teng Hern Tan
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Subang Jaya, Malaysia
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Wai Leng Lee
- School of Science, Monash University Malaysia, Subang Jaya, Malaysia
| | - Wei Hsum Yap
- School of Biosciences, Taylor's University, Subang Jaya, Malaysia
| | - Priyia Pusparajah
- Medical Health and Translational Research Group, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
| | - Liang Ee Low
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Siah Ying Tang
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Subang Jaya, Malaysia
- Advanced Engineering Platform, Monash University Malaysia, Subang Jaya, Malaysia
| | - Kok Gan Chan
- International Genome Centre, Jiangsu University, Zhenjiang, China
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Learn Han Lee
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Subang Jaya, Malaysia
| | - Bey Hing Goh
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Subang Jaya, Malaysia
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Health and Well-Being Cluster, Global Asia in the 21st Century (GA21) Platform, Monash University Malaysia, Subang Jaya, Malaysia
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11
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12
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Vega Alanis BA, Iorio MT, Silva LL, Bampali K, Ernst M, Schnürch M, Mihovilovic MD. Allosteric GABA A Receptor Modulators-A Review on the Most Recent Heterocyclic Chemotypes and Their Synthetic Accessibility. Molecules 2020; 25:E999. [PMID: 32102309 PMCID: PMC7070463 DOI: 10.3390/molecules25040999] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 11/17/2022] Open
Abstract
GABAA receptor modulators are structurally almost as diverse as their target protein. A plethora of heterocyclic scaffolds has been described as modulating this extremely important receptor family. Some made it into clinical trials and, even on the market, some were dismissed. This review focuses on the synthetic accessibility and potential for library synthesis of GABAA receptor modulators containing at least one heterocyclic scaffold, which were disclosed within the last 10 years.
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Affiliation(s)
- Blanca Angelica Vega Alanis
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/193, 1060 Vienna, Austria; (B.A.V.A.); (M.T.I.); (M.D.M.)
| | - Maria Teresa Iorio
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/193, 1060 Vienna, Austria; (B.A.V.A.); (M.T.I.); (M.D.M.)
| | - Luca L. Silva
- Department of Anesthesiology and Intensive Care Medicine, Charité–Universitätsmedizin, Charitéplatz 1, 10117 Berlin, Germany;
| | - Konstantina Bampali
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Spitalgasse 4, 1090 Vienna, Austria;
| | - Margot Ernst
- Department of Molecular Neurosciences, Center for Brain Research, Medical University of Vienna, Spitalgasse 4, 1090 Vienna, Austria;
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/193, 1060 Vienna, Austria; (B.A.V.A.); (M.T.I.); (M.D.M.)
| | - Marko D. Mihovilovic
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/193, 1060 Vienna, Austria; (B.A.V.A.); (M.T.I.); (M.D.M.)
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13
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Welch KD, Stonecipher CA, Lee ST, Cook D. The acute toxicity of water hemlock (Cicuta douglasii) in a goat model. Toxicon 2020; 176:55-58. [PMID: 32103796 DOI: 10.1016/j.toxicon.2020.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/07/2020] [Accepted: 02/11/2020] [Indexed: 10/25/2022]
Abstract
Water hemlock (Cicuta douglasii) is one of the most toxic plants to livestock and humans. Little is known regarding the amount of plant required to cause death. The objective of this study was to determine a lethal dose of water hemlock in a goat model. Plants were dosed to goats via oral gavage of freeze-dried ground plant material. The results from this study suggest that 1-2 fresh tubers would be lethal to goats.
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Affiliation(s)
- K D Welch
- USDA-ARS Poisonous Plant Research Laboratory, Logan, UT, 84341, USA.
| | - C A Stonecipher
- USDA-ARS Poisonous Plant Research Laboratory, Logan, UT, 84341, USA
| | - S T Lee
- USDA-ARS Poisonous Plant Research Laboratory, Logan, UT, 84341, USA
| | - D Cook
- USDA-ARS Poisonous Plant Research Laboratory, Logan, UT, 84341, USA
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14
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Çiçek SS. Structure-Dependent Activity of Natural GABA(A) Receptor Modulators. Molecules 2018; 23:molecules23071512. [PMID: 29932138 PMCID: PMC6100244 DOI: 10.3390/molecules23071512] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 12/22/2022] Open
Abstract
GABA(A) receptors are ligand-gated ion channels consisting of five subunits from eight subfamilies, each assembled in four hydrophobic transmembrane domains. This pentameric structure not only allows different receptor binding sites, but also various types of ligands, such as orthosteric agonists and antagonists, positive and negative allosteric modulators, as well as second-order modulators and non-competitive channel blockers. A fact, that is also displayed by the variety of chemical structures found for both, synthetic as well as nature-derived GABA(A)-receptor modulators. This review covers the literature for natural GABA(A)-receptor modulators until the end of 2017 and discusses their structure-activity relationship.
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Affiliation(s)
- Serhat Sezai Çiçek
- Department of Pharmaceutical Biology, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany.
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15
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Berger M, Chen Y, Bampali K, Ernst M, Maulide N. Expeditious synthesis of polyacetylenic water hemlock toxins and their effects on the major GABAA receptor isoform. Chem Commun (Camb) 2018; 54:2008-2011. [DOI: 10.1039/c7cc09801d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Classical synthetic approaches to highly unsaturated polyene/yne natural products rely on iterative cross-coupling of linear fragments.
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Affiliation(s)
- Martin Berger
- Institute of Organic Chemistry
- University of Vienna
- 1090 Vienna
- Austria
| | - Yong Chen
- Institute of Organic Chemistry
- University of Vienna
- 1090 Vienna
- Austria
| | - Konstantina Bampali
- Department of Molecular Neurosciences
- Center for Brain Research/Medical University of Vienna
- 1090 Vienna
- Austria
| | - Margot Ernst
- Department of Molecular Neurosciences
- Center for Brain Research/Medical University of Vienna
- 1090 Vienna
- Austria
| | - Nuno Maulide
- Institute of Organic Chemistry
- University of Vienna
- 1090 Vienna
- Austria
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16
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Kobaek-Larsen M, El-Houri RB, Christensen LP, Al-Najami I, Fretté X, Baatrup G. Dietary polyacetylenes, falcarinol and falcarindiol, isolated from carrots prevents the formation of neoplastic lesions in the colon of azoxymethane-induced rats. Food Funct 2017; 8:964-974. [PMID: 28197615 DOI: 10.1039/c7fo00110j] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Falcarinol (FaOH) and falcarindiol (FaDOH) are found in many food plants of the Apiaceae family. Carrots are a major dietary source of these polyacetylenes. Feeding azoxymethane (AOM)-induced rats with carrots and purified FaOH have previously been shown to inhibit neoplastic transformations in the colon. FaOH and FaDOH have also shown to have a synergistic effect in vitro, resulting in a significant increased cytotoxic activity. Based on these findings the antineoplastic effect of FaOH and FaDOH (purity > 99%) was investigated in the AOM-induced rat model. Twenty rats received rat diet containing 7 μg FaOH per g feed and 7 μg FaDOH per g feed and 20 rats were controls receiving only rat diet. Then carcinogenesis was induced in all 40 rats with the carcinogen AOM. All animals received the designated diet for 2 weeks before AOM induction and continued on the designated diet throughout the experiment. Rats were euthanized 18 weeks after the first AOM injection and macroscopic polyp/cancers were measured, harvested and stained for histology. The difference in sizes of aberrant crypt foci (ACF) were analysed in a Wilcoxon rank sum test, in which the median number of small ACF was 218 in controls and 145 in polyacetylene treated rats (P < 0.001). Fifteen control rats and 8 treated rats had macroscopic tumors (P = 0.027). The number of tumors larger than 3 mm were 6 and 1 in control and treated rats, respectively (P = 0.032). In conclusion dietary supplements with FaOH and FaDOH reduced the number of neoplastic lesions as well as the growth rate of the polyps suggesting a preventive effect of FaOH and FaDOH on the development of colorectal cancer.
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Affiliation(s)
- Morten Kobaek-Larsen
- Department of Clinical Research, University of Southern Denmark, Winsløwparken 19, DK-5000 Odense C, Denmark and Department of Surgery A, Odense University Hospital, Valdemarsgade 53, DK-5700 Svendborg, Denmark.
| | - Rime B El-Houri
- Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Lars P Christensen
- Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Issam Al-Najami
- Department of Clinical Research, University of Southern Denmark, Winsløwparken 19, DK-5000 Odense C, Denmark and Department of Surgery A, Odense University Hospital, Valdemarsgade 53, DK-5700 Svendborg, Denmark.
| | - Xavier Fretté
- Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Gunnar Baatrup
- Department of Clinical Research, University of Southern Denmark, Winsløwparken 19, DK-5000 Odense C, Denmark and Department of Surgery A, Odense University Hospital, Valdemarsgade 53, DK-5700 Svendborg, Denmark.
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17
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Schmidt B, Audörsch S. Stereoselective Total Syntheses of Polyacetylene Plant Metabolites via Ester-Tethered Ring Closing Metathesis. J Org Chem 2017; 82:1743-1760. [PMID: 28085285 DOI: 10.1021/acs.joc.6b02987] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Total syntheses of five naturally occurring polyacetylenes from three different plants are described. These natural products have in common an E,Z-configured conjugated diene linked to a di- or triyne chain. As the key method to stereoselectively establish the E,Z-diene part, an ester-tethered ring-closing metathesis/base-induced eliminative ring opening sequence was used. The results presented herein do not only showcase the utility of this tethered RCM variant but have also prompted us to suggest that the originally assigned absolute configurations of chiral polyacetylenes from Atractylodes macrocephala should be revised or at least reconsidered.
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Affiliation(s)
- Bernd Schmidt
- Universität Potsdam , Institut für Chemie, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam-Golm, Germany
| | - Stephan Audörsch
- Universität Potsdam , Institut für Chemie, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam-Golm, Germany
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18
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Lin M, Zhang W, Su J. Toxic polyacetylenes in the genus Bupleurum (Apiaceae) - Distribution, toxicity, molecular mechanism and analysis. JOURNAL OF ETHNOPHARMACOLOGY 2016; 193:566-573. [PMID: 27693772 DOI: 10.1016/j.jep.2016.09.052] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/28/2016] [Accepted: 09/28/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The genus Bupleurum includes approximately 200 species that are widely distributed in the Northern Hemisphere, Eurasia and North Africa. Certain species of this genus have long been used as antiphlogistic, antipyretic and analgesic agents in traditional folk medicine. As described in the Chinese Pharmacopoeia, the roots of Bupleurum chinense DC. and B. scorzonerifolium Willd. are the herbal materials that compose Chaihu (Radix Bupleuri), a well-known TCM herb. AIM OF THE REVIEW This review aims to provide up-to-date and comprehensive information regarding the distribution, toxicity, molecular mechanism and relatively new methods for the qualitative and quantitative determination of polyacetylenes in different Bupleurum species. METHOD The information needed for this paper were sourced from publishing sites such as Elsevier, science Direct, PubMed; electronic search engines such as Scopus and Web of Science, Google scholar; other scientific database sites for chemicals such as ChemSpider, PubChem, SciFinder, and also from on line books. RESULTS Polyacetylenes, which are widely distributed in genus Bupleurum of the Apiaceae family, have high toxicity. Among polyacetylenes, bupleurotoxin, acetylbupleurotoxin and oenanthotoxin have strong neurotoxicity. Through previous research, it was found that the toxicity of Bupleurum polyacetylenes manifested as epileptic seizures, with the target of toxicity being the brain. The neurotoxicity of polyacetylenes exhibits a relationship with the γ-aminobutyric acid (GABA) receptor pathway, and polyacetylenes have been shown to inhibit GABA-induced currents (IGABA) in a competitive manner. CONCLUSIONS The plants of genus Bupleurum have been used in traditional medicine for thousands of years. However, certain species of this genus are poisonous, and it was attributed to the high content of polyacetylenes. The present review indicates that certain polyacetylenes in the genus Bupleurum have highly neurotoxic effects. The major challenge with regard to toxic polyacetylenes is to test their neurotoxic effects in vivo as well as in further preclinical studies, which will require large amounts of purified polyacetylenes. More reference substances should be prepared, and sophisticated analytical technologies should be developed to comprehensively assess the quality of Radix Bupleuri herbs. These investigations will be helpful for further utilization of the plants of genus Bupleurum.
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Affiliation(s)
- Meiyu Lin
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Weidong Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Juan Su
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
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19
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Liu J, Li HL, Guo XR, Zhou L, Wang Y, Duan YN, Wang MZ, Na RS, Yu B. A general strategy toward the total synthesis of C17 polyacetylenes virols A and C. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Schmidt B, Audörsch S. Stereoselective Total Synthesis of Atractylodemayne A, a Conjugated 2(E),8(Z),10(E)-Triene-4,6-diyne. Org Lett 2016; 18:1162-5. [DOI: 10.1021/acs.orglett.6b00274] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Bernd Schmidt
- Universitaet Potsdam, Institut fuer Chemie (Organische
Synthesechemie), Karl-Liebknecht-Strasse
24-25, D-14476 Potsdam-Golm, Germany
| | - Stephan Audörsch
- Universitaet Potsdam, Institut fuer Chemie (Organische
Synthesechemie), Karl-Liebknecht-Strasse
24-25, D-14476 Potsdam-Golm, Germany
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21
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Green BT, Goulart C, Welch KD, Pfister JA, McCollum I, Gardner DR. The non-competitive blockade of GABAA receptors by an aqueous extract of water hemlock (Cicuta douglasii) tubers. Toxicon 2015; 108:11-4. [DOI: 10.1016/j.toxicon.2015.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 11/24/2022]
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22
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Nagata T, Ito S, Itoga K, Kanazawa H, Masaki H. The mechanism of melanocytes-specific cytotoxicity induced by phenol compounds having a prooxidant effect, relating to the appearance of leukoderma. BIOMED RESEARCH INTERNATIONAL 2015; 2015:479798. [PMID: 25861631 PMCID: PMC4377363 DOI: 10.1155/2015/479798] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 03/01/2015] [Indexed: 11/29/2022]
Abstract
Specific phenol compounds including rhododendrol (RD), a skin-brightening ingredient in cosmetics, are reported to induce leukoderma, inducing a social problem, and the elucidation of mechanism of leukoderma is strongly demanded. This study investigated the relationship among the cytotoxicities of six phenol compounds on B16F10 melanoma cells and HaCaT keratinocytes and generated reactive oxygen species (ROS). As a result, the cytotoxicity of RD on B16F10 cells was higher than that on HaCaT cells, and RD significantly increased intracellular ROS and hydrogen peroxide (H2O2) levels in B16F10 cells. Furthermore, although raspberry ketone (RK), RD derivative, also increased intracellular ROS in B16F10 cells, increase in ROS was suppressed by disodium dihydrogen ethylenediaminetetraacetate dehydrate (EDTA). The amounts of increased ROS with RK in HaCaT cells without melanocyte were further increased by tyrosinase. Therefore, tyrosinase, a metalloprotein having copper, was speculated to be one of causative agents allowing phenol compounds to work as a prooxidant. Hydroxyl radical was generated by adding a mixture of tyrosinase and H2O2 to RD, and the amount of the radical was further increased by UVB, indicating that RD cytotoxicity was caused by intracellularly increased ROS, which possibly related to phenol induced prooxidants.
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Affiliation(s)
- Takeshi Nagata
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 2-10 Kawadacho, Shinjuku-ku, Tokyo 162-0054, Japan
- I.T.O. Co. Ltd., 1-6-7-3F Naka-cho, Musashino, Tokyo 180-0006, Japan
| | - Shinobu Ito
- I.T.O. Co. Ltd., 1-6-7-3F Naka-cho, Musashino, Tokyo 180-0006, Japan
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kazuyoshi Itoga
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 2-10 Kawadacho, Shinjuku-ku, Tokyo 162-0054, Japan
| | - Hideko Kanazawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Hitoshi Masaki
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakuramachi, Hachioji, Tokyo 192-0982, Japan
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23
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Silva DB, Rodrigues ED, da Silva GVJ, Lopes NP, de Oliveira DCR. Post-column sodiation to enhance the detection of polyacetylene glycosides in LC-DAD-MS analyses: an example from Bidens gardneri (Asteraceae). Talanta 2014; 135:87-93. [PMID: 25640130 DOI: 10.1016/j.talanta.2014.12.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 11/29/2022]
Abstract
The use of liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) in dereplication studies of medicinal plants is a common strategy, but the analyses of polyacetylenes by LC-ESI-MS are little explored and require huge efforts, especially if there are low concentrations in the extracts. A post-column sodiation strategy was successfully applied to enhance the detection of polyacetylene glycosides. Their molecular formulae were proposed by HRESI, whereas the polyacetylene chromophores were determined by UV data. The use of acetic acid in the mobile phase was essential to obtain satisfactory chromatographic resolution, and only the addition of sodium chloride solution allowed good mass spectra, internal calibration and undoubtedly the molar mass determination of polyacetylenes. This new approach has allowed the identification of polyacetylene glycosides from Bidens gardneri extract, guiding the isolation procedures, and two new compounds were obtained. The structures of the isolated polyacetylenes have been confirmed by 1D and 2D NMR, HRMS.
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Affiliation(s)
- Denise Brentan Silva
- Núcleo de Pesquisas em Produtos Naturais e Sintéticos - NPPNS, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, 14040-903 Ribeirão Preto, SP, Brazil
| | - Edilene Delphino Rodrigues
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida dos Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil; Departamento de Química, Universidade Federal de Mato Grosso do Sul, CP 549, 79070-900 Campo Grande, MS, Brazil
| | - Gil Valdo José da Silva
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida dos Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Norberto Peporine Lopes
- Núcleo de Pesquisas em Produtos Naturais e Sintéticos - NPPNS, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, 14040-903 Ribeirão Preto, SP, Brazil.
| | - Dionéia Camilo Rodrigues de Oliveira
- Núcleo de Pesquisas em Produtos Naturais e Sintéticos - NPPNS, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, 14040-903 Ribeirão Preto, SP, Brazil
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24
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Zhang Z, Lu C, Liu X, Su J, Dai W, Yan S, Lu A, Zhang W. Global and Targeted Metabolomics Reveal That Bupleurotoxin, a Toxic Type of Polyacetylene, Induces Cerebral Lesion by Inhibiting GABA Receptor in Mice. J Proteome Res 2013; 13:925-33. [DOI: 10.1021/pr400968c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zhongxiao Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Cheng Lu
- Institute
of Basic
Research in Clinical Medicine, China Academy of Chinese Medical Science, Beijing 100700, PR China
| | - Xinru Liu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Juan Su
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Weixing Dai
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Shikai Yan
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Aiping Lu
- Institute
of Basic
Research in Clinical Medicine, China Academy of Chinese Medical Science, Beijing 100700, PR China
- School of Chinese
Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Weidong Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, PR China
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25
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Rossi R, Bellina F, Lessi M, Manzini C. Development and applications of highly selective palladium-catalyzed monocoupling reactions of (cyclo)alkenes and 1,3-alkadienes bearing two or three electrophilic sites and bis(enol triflates) with terminal alkynes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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26
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Panter KE, Gardner DR, Stegelmeier BL, Welch KD, Holstege D. Water hemlock poisoning in cattle: Ingestion of immature Cicuta maculata seed as the probable cause. Toxicon 2011; 57:157-61. [DOI: 10.1016/j.toxicon.2010.11.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2010] [Revised: 11/11/2010] [Accepted: 11/13/2010] [Indexed: 11/30/2022]
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27
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Burghart J, Brückner R. Sn/Li Exchange Reactions in 1,ω-Distannylated Conjugated Trienes and Tetraenes: An Enabling Step for Polyene Synthesis. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001231] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Appendino G, Pollastro F, Verotta L, Ballero M, Romano A, Wyrembek P, Szczuraszek K, Mozrzymas JW, Taglialatela-Scafati O. Polyacetylenes from sardinian Oenanthe fistulosa: a molecular clue to risus sardonicus. JOURNAL OF NATURAL PRODUCTS 2009; 72:962-5. [PMID: 19245244 PMCID: PMC2685611 DOI: 10.1021/np8007717] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
An investigation of Oenanthe fistulosa from Sardinia afforded oenanthotoxin (1a) and dihydrooenanthotoxin (1b) from the roots and the diacetylenic epoxydiol 2 from the seeds. The absolute configuration of 1a and 1b was established as R by the modified Mosher's method, and the structure of 2 by chemical correlation with (+)-(3R,8S)-falcarindiol. Oenanthotoxin (1a) and dihydrooenanthotoxin (1b) were found to potently block GABAergic responses, providing a molecular rationale for the symptoms of poisoning from water-dropwort (Oenanthe crocata) and related plants. These observations bear relevance for a series of historical and ethnopharmacological observations on the identification of the Sardonic herb and the molecular details of the facial muscular contraction caused by its ingestion (risus sardonicus).
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Affiliation(s)
- Giovanni Appendino
- To whom correspondence should be addressed. Tel: +39 0321 375744(G.A.); +48 71 7841550(J.W.M.); +39 081 678509(O.T.-S.). Fax: +39 0321 375621 (G.A.); +48 71 784 1399 (J.W.M.); +39 081 678552 (O.T.-S.). E-mail: (G.A.); (J.W.M.); (O.T.S.)
| | | | | | | | | | | | | | - Jerzy W. Mozrzymas
- To whom correspondence should be addressed. Tel: +39 0321 375744(G.A.); +48 71 7841550(J.W.M.); +39 081 678509(O.T.-S.). Fax: +39 0321 375621 (G.A.); +48 71 784 1399 (J.W.M.); +39 081 678552 (O.T.-S.). E-mail: (G.A.); (J.W.M.); (O.T.S.)
| | - Orazio Taglialatela-Scafati
- To whom correspondence should be addressed. Tel: +39 0321 375744(G.A.); +48 71 7841550(J.W.M.); +39 081 678509(O.T.-S.). Fax: +39 0321 375621 (G.A.); +48 71 784 1399 (J.W.M.); +39 081 678552 (O.T.-S.). E-mail: (G.A.); (J.W.M.); (O.T.S.)
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29
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Schep LJ, Slaughter RJ, Becket G, Beasley DMG. Poisoning due to water hemlock. Clin Toxicol (Phila) 2009; 47:270-8. [DOI: 10.1080/15563650902904332] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Gung BW, Omollo AO. A Concise Synthesis of R-(-)-Cicutoxin, a Natural 17-Carbon Polyenyne. European J Org Chem 2009; 2009. [PMID: 24273444 DOI: 10.1002/ejoc.200801172] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A concise synthesis of the natural polyenyne R-(-)-cicutoxin (1) is described. After several trials, the successful synthesis commenced with three key fragments, R-(-)-1-hexyn-3-ol (8), 1,4-diiodo-1,3-butadiene (9), and the THP protected 4,6-heptadiyn-1-ol (6). Sonogashira coupling of compound 9 with acetylenes 6 and 8 gave the 17-carbon frame, which upon regio-selective reduction of a triple bond with red Al and removal of the THP protecting group afforded the natural product in four linear steps. The triply convergent synthesis gave R-(-)-cicutoxin in 18% overall yield.
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Affiliation(s)
- Benjamin W Gung
- Department of Chemistry & Biochemistry, Miami University, Oxford, OH 45056
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31
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Minto RE, Blacklock BJ. Biosynthesis and function of polyacetylenes and allied natural products. Prog Lipid Res 2008; 47:233-306. [PMID: 18387369 PMCID: PMC2515280 DOI: 10.1016/j.plipres.2008.02.002] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2007] [Revised: 02/25/2008] [Accepted: 02/28/2008] [Indexed: 11/19/2022]
Abstract
Polyacetylenic natural products are a substantial class of often unstable compounds containing a unique carbon-carbon triple bond functionality, that are intriguing for their wide variety of biochemical and ecological functions, economic potential, and surprising mode of biosynthesis. Isotopic tracer experiments between 1960 and 1990 demonstrated that the majority of these compounds are derived from fatty acid and polyketide precursors. During the past decade, research into the metabolism of polyacetylenes has swiftly advanced, driven by the cloning of the first genes responsible for polyacetylene biosynthesis in plants, moss, fungi, and actinomycetes and the initial characterization of the gene products. The current state of knowledge of the biochemistry and molecular genetics of polyacetylenic secondary metabolic pathways will be presented together with an up-to-date survey of new terrestrial and marine natural products, their known biological activities, and a discussion of their likely metabolic origins.
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Affiliation(s)
- Robert E Minto
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, IN 46202, United States.
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32
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Lee S, Lee T, Lee Y, Kim D, Kim S. Solid-Phase Library Synthesis of Polyynes Similar to Natural Products. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200703208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Lee S, Lee T, Lee YM, Kim D, Kim S. Solid-Phase Library Synthesis of Polyynes Similar to Natural Products. Angew Chem Int Ed Engl 2007; 46:8422-5. [PMID: 17893942 DOI: 10.1002/anie.200703208] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Seonwoo Lee
- College of Pharmacy, Seoul National University, San 56-1, Shilim, Kwanak, Seoul 151-742, Korea
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34
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Izzo I, Maulucci N, Bifulco G, De Riccardis F. Total synthesis of azumamides A and E. Angew Chem Int Ed Engl 2007; 45:7557-60. [PMID: 16960909 DOI: 10.1002/anie.200602033] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Irene Izzo
- Department of Chemistry, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano/Salerno, Italy.
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35
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Izzo I, Maulucci N, Bifulco G, De Riccardis F. Total Synthesis of Azumamides A and E. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200602033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Quantum Chemical Studies on Structure Activity Relationship of Natural Product Polyacetylenes. Theor Chem Acc 2006. [DOI: 10.1007/s00214-006-0148-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Christensen LP, Brandt K. Bioactive polyacetylenes in food plants of the Apiaceae family: Occurrence, bioactivity and analysis. J Pharm Biomed Anal 2006; 41:683-93. [PMID: 16520011 DOI: 10.1016/j.jpba.2006.01.057] [Citation(s) in RCA: 217] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2005] [Revised: 01/29/2006] [Accepted: 01/30/2006] [Indexed: 10/24/2022]
Abstract
Many bioactive compounds with known effects on human physiology and disease have been identified through studies of plants used in traditional medicine. Some of these substances occur also in common food plants, and hence could play a significant role in relation to human health. Food plants of the Apiaceae plant family such as carrots, celery and parsley, contain a group of bioactive aliphatic C17-polyacetylenes. These polyacetylenes have shown to be highly toxic towards fungi, bacteria, and mammalian cells, and to display neurotoxic, anti-inflammatory and anti-platelet-aggregatory effects and to be responsible for allergic skin reactions. The effect of these polyacetylenes towards human cancer cells, their human bioavailability and their ability to reduce tumour formation in a mammalian in vivo model indicates that they may also provide benefits for health. The present state of knowledge on the occurrence of polyacetylenes in Apiaceae food plants, their biochemistry and bioactivity is presented in this review as well as relatively new methods for the isolation and quantification of these compounds from plants, plant products and biological fluids.
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Affiliation(s)
- Lars P Christensen
- Department of Food Science, Danish Institute of Agricultural Sciences, Research Centre Aarslev, Kirstinebjergvej 10, DK-5792 Aarslev, Denmark.
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On the importance of the pore inner cavity for the ionophoric activity of 1,3-alternate calix[4]arene/steroid conjugates. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.04.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Over the past fifty years, hundreds of polyyne compounds have been isolated from nature. These often unstable molecules are found in sources as common as garden vegetables and as obscure as bacterial cultures. Naturally occurring polyynes feature a wide range of structural diversity and display an equally broad array of biological properties. Early synthetic efforts relied primarily on Cu-catalyzed, oxidative acetylenic homo- and heterocoupling reactions to assemble the polyyne framework. The past 25 years, however, have witnessed a renaissance in the field of polyyne natural product synthesis: transition-metal-catalyzed alkynylation reactions and asymmetric transformations have combined to substantially expand access to natural polyynes. This Review recounts these synthetic achievements and also highlights both the natural source(s) and biological relevance for many of these compounds.
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Johnston GAR, Hanrahan JR, Chebib M, Duke RK, Mewett KN. Modulation of Ionotropic GABA Receptors by Natural Products of Plant Origin. GABA 2006; 54:285-316. [PMID: 17175819 DOI: 10.1016/s1054-3589(06)54012-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Baur R, Simmen U, Senn M, Séquin U, Sigel E. Novel Plant Substances Acting as β Subunit Isoform-Selective Positive Allosteric Modulators of GABAAReceptors. Mol Pharmacol 2005; 68:787-92. [PMID: 15939801 DOI: 10.1124/mol.105.011882] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
GABAA receptors are modulated by a large variety of compounds. A common chemical characteristic of most of these modulators is that they contain a cyclic entity. Three linear molecules of a polyacetylene structure were isolated from the East African medicinal plant Cussonia zimmermannii Harms and shown to allosterically stimulate GABAA receptors. Stimulation was not abolished by the absence of the gamma2 subunit, the benzodiazepine antagonist Ro15-1788 (8-fluoro-5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic acid ethyl ester), or the point mutation beta2N265S that abolishes effects by loreclezole. At a concentration of 30 microM, the substances by themselves elicited only tiny currents. Maximal stimulation at alpha1beta2gamma2 amounted to 110 to 450% for the three substances, and half-maximal stimulation was observed at concentrations of 1 to 2 muM. Stimulation was subunit composition-dependent and was for the substance MS-1, alpha1beta2gamma2 approximately alpha1beta2 approximately alpha3beta2gamma2 > alpha2beta2gamma2 > alpha5beta2gamma2 approximately alpha1beta3gamma2 approximately alpha6beta2gamma2 > alpha1beta1gamma2, for MS-2 alpha1beta2gamma2 approximately alpha3beta2gamma2 approximately alpha1beta2 > alpha2beta2gamma2 approximately alpha6beta2gamma2 approximately alpha5beta2gamma2 > alpha1beta1gamma2, and for MS-4, alpha1beta2gamma2 approximately alpha1beta2 approximately alpha5beta2gamma2 approximately alpha3beta2gamma2 approximately alpha2beta2gamma2 > alpha6beta2gamma2 >> alpha1beta1gamma2. Maximal stimulation by MS-1 was 450% at alpha1beta2gamma2, 80% at alpha1beta1gamma2, and 150% at alpha1beta3gamma2. MS-1 was thus specific for receptors containing the beta2 subunit. The reversal potential was unaffected by 10 microM MS-1, whereas apparent picrotoxin affinity for current inhibition was increased approximately 3-fold. In summary, these positive allosteric modulators of GABAA receptors of plant origin have a novel unusual chemical structure and act at a site independent of that of benzodiazepines and loreclezole.
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Affiliation(s)
- Roland Baur
- Department of Pharmacology, University of Bern, CH-3010 Bern, Switzerland
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