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Wessig P, Schmidt P, Badetko D, Sperlich E, Kelling A. Total synthesis of Comfreyn A and structural analogues via two photochemical key steps. Photochem Photobiol Sci 2024; 23:1485-1494. [PMID: 38935211 DOI: 10.1007/s43630-024-00607-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 06/21/2024] [Indexed: 06/28/2024]
Abstract
In this work the influence of o-fluorine substituents on the photo-dehydro-Diels-Alder (PDDA) reaction was investigated and the findings of this study were applied to the total synthesis of natural products. The reactant molecules consisted of two alkyl arylpropiolates, connected by a suberic acid tether and bearing fluorine substituents in each of the o-positions. While quantum chemical calculations suggested that a fluorine substituent prevents an attack of the adjacent carbon atom in the second C-C bond forming step of the PDDA reaction, this attack took place nevertheless. The subsequent fluoride elimination, assisted by protic solvents or trialkylsilanes, resulted in an "Umpolung" of the 4-position of the cycloallene intermediate enabling the introduction of nucleophiles at this position. The nucleophilic replacement of the second fluorine substituent could also be triggered photochemically. After removal of the tether, the two arene moieties stand nearly perpendicular to each other and a selective excitation of the naphthalene moiety was possible. This led to an intramolecular photoinduced electron transfer (PET) followed by a nucleophilic replacement of the fluoride according to a SR+N1Ar* mechanism. The formed phenolic hydroxyl group underwent spontaneous lactonization with the adjacent ester group. Based on these results, the first total synthesis of the lignan Comfreyn A and some structural analogues were developed.
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Affiliation(s)
- Pablo Wessig
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany.
| | - Peter Schmidt
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Dominik Badetko
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Eric Sperlich
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Alexandra Kelling
- Institut für Chemie, Bioorganische Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
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Luca SV, Zengin G, Kulinowski Ł, Sinan KI, Skalicka-Woźniak K, Trifan A. Phytochemical profiling and bioactivity assessment of underutilized Symphytum species in comparison with Symphytum officinale. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:3971-3981. [PMID: 38252561 DOI: 10.1002/jsfa.13279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 11/21/2023] [Accepted: 01/07/2024] [Indexed: 01/24/2024]
Abstract
BACKGROUND Symphytum (comfrey) genus, particularly Symphytum officinale, has been empirically used in folk medicine mainly for its potent anti-inflammatory properties. In an attempt to shed light on the valorization of less known taxa, the current study evaluated the metabolite profile and antioxidant and enzyme inhibitory effects of nine Symphytum species. RESULTS Phenolic acids, flavonoids and pyrrolizidine alkaloids were the most representative compounds in all comfrey samples. Hierarchical cluster analysis revealed that, within the roots, S. grandiflorum was slightly different from S. ibericum, S. caucasicum and the remaining species. Within the aerial parts, S. caucasicum and S. asperum differed from the other samples. All Symphytum species showed good antioxidant and enzyme inhibitory activities, as evaluated in DPPH (up to 50.17 mg Trolox equivalents (TE) g-1), ABTS (up to 49.92 mg TE g-1), cupric reducing antioxidant capacity (CUPRAC, up to 92.93 mg TE g-1), ferric reducing antioxidant power (FRAP, up to 53.63 mg TE g-1), acetylcholinesterase (AChE, up to 0.52 mg galanthamine equivalents (GALAE) g-1), butyrylcholinesterase (BChE, up to 0.96 mg GALAE g-1), tyrosinase (up to 13.58 mg kojic acid equivalents g-1) and glucosidase (up to 0.28 mmol acarbose equivalents g-1) tests. Pearson correlation analysis revealed potential links between danshensu and ABTS/FRAP/CUPRAC, quercetin-O-hexoside and DPPH/CUPRAC, or rabdosiin and anti-BChE activity. CONCLUSIONS By assessing for the first time in a comparative manner the phytochemical-biological profile of a considerably high number of Symphytum samples, this study unveils the potential use of less common comfrey species as novel phytopharmaceutical or agricultural raw materials. © 2024 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Simon Vlad Luca
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | - Łukasz Kulinowski
- Department of Natural Products Chemistry, Medical University of Lublin, Lublin, Poland
| | - Kouadio Ibrahime Sinan
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | | | - Adriana Trifan
- Department of Pharmacognosy-Phytotherapy, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
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Melnyk N, Popowski D, Strawa JW, Przygodzińska K, Tomczyk M, Piwowarski JP, Granica S. Skin microbiota metabolism of natural products from comfrey root (Symphytum officinale L.). JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116968. [PMID: 37506778 DOI: 10.1016/j.jep.2023.116968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Comfrey root (Symphytum officinale L., Boraginaceae) has been used in folk medicine for a long time to treat different diseases. It is recommended for swellings, phlebitis, contusions, gastro-duodenal ulcers, respiratory diseases, and metrorrhagia. Currently, preparations from S. officinale are only topically used due to its wound-healing effects, and for reducing inflammation and the treatment of broken bones, tendon damage, painful joints and muscles. Although it is a widespread plant material, little is known about the interaction of externally applied preparations of comfrey with the human skin microbiome. AIM OF THE STUDY The study aims to determine the interaction between human skin microbiota and the comfrey root extracts, by monitoring the biotransformation of the constituents present in the extract and evaluating changes in the population of the skin microbiota in an ex vivo setting. MATERIAL AND METHODS The comfrey root extract was incubated with the human skin microbiota from ten healthy donors. The UHPLC-DAD-MSn analysis determined the composition of the raw extract and the microbial metabolites. Bacterial genomic DNA was extracted and examined by amplification sequencing of the 16S rDNA to determine changes in the bacterial composition. RESULTS The hydroethanolic extract of comfrey root primarily consists of phenolic acids, pyrrolizidine alkaloids, and their derivatives, and lignans. The natural products present in the extract underwent biodegradation by the skin microbiota, leading to the formation of smaller molecules. It was observed that the skin microbial metabolism primarily focused on modifying the derivatives of pyrrolizidine alkaloids. It resulted in the production of deacetylated and deesterificated compounds. However, it did not lead to the conversion of these compounds into free alkaloids. CONCLUSIONS The microbiota-triggered biotransformation of the comfrey root extract was observed. A few N-oxides were metabolized to deacetylated and deesterificated forms in ex vivo conditions. It suggests that the intermittent external applications of comfrey preparations perchance are unlikely to pose a substantial risk. While it even may serve as a potential factor influencing the extract activity in treating skin diseases.
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Affiliation(s)
- Natalia Melnyk
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097, Warsaw, Poland.
| | - Dominik Popowski
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097, Warsaw, Poland; Department of Food Safety and Chemical Analysis, Waclaw Dabrowski Institute of Agricultural and Food Biotechnology-State Research Institute, ul. Rakowiecka 36, 02-532, Warsaw, Poland.
| | - Jakub W Strawa
- Department of Pharmacognosy, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Bialystok, ul. Mickiewicza 2a, 15-230, Białystok, Poland.
| | - Klaudia Przygodzińska
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097, Warsaw, Poland.
| | - Michał Tomczyk
- Department of Pharmacognosy, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Bialystok, ul. Mickiewicza 2a, 15-230, Białystok, Poland.
| | - Jakub P Piwowarski
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097, Warsaw, Poland.
| | - Sebastian Granica
- Microbiota Lab, Department of Pharmaceutical Biology, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097, Warsaw, Poland.
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Rahmani Samani M, D’Urso G, Nazzaro F, Fratianni F, Masullo M, Piacente S. Phytochemical Investigation and Biofilm-Inhibitory Activity of Bachtiari Savory ( Satureja bachtiarica Bunge) Aerial Parts. PLANTS (BASEL, SWITZERLAND) 2023; 13:67. [PMID: 38202375 PMCID: PMC10780387 DOI: 10.3390/plants13010067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
Satureja bachtiarica is an endemic plant from the Lamiaceae family, growing in the Zagros mountain range in Iran. Even if S. bachtiarica is reported to possess many biological activities, little is known about its chemical composition. For this reason, in the present research, a phytochemical investigation of this species was carried out. To have a preliminary metabolite profile of S. bachtiarica, the n-BuOH extract was analyzed using LC-ESI/LTQOrbitrap/MS/MS in negative ion mode, allowing the identification of specialized metabolites belonging to flavonoid, monoterpene, indol, phenylpropanoid, phenolic, lignan, coumarin, biphenyl, and triterpene classes. The LC-MS/MS analysis guided the isolation of compounds, and their structures were characterized using spectroscopic methods including 1D- and 2D-NMR experiments and HRMSn analysis. In this way, a compound never reported before belonging to the biphenyl class was identified. Total flavonoid content of the extract along with the antioxidant activity were assessed. Based on the traditional uses of S. bachtiarica suggesting potential antibacterial properties, an evaluation of the biofilm inhibitory activity of the extract and isolated compounds against mature biofilms of Acinetobacter baumannii, Escherichia coli, Listeria monocytogenes, Pseudomonas aeruginosa, and Staphylococcus aureus, as well as their influence on the metabolism of sessile bacterial cells, was conducted. The results evidenced that some compounds including parmentin B, biphenyls, and 1-(1H-indole-3-carboxylate)-β-D-glucopyranoside might inhibit some changes occurring in the bacterial cells, which increases their virulence. In particular, biphenyl derivatives at a concentration of 80 μg/mL were capable of limiting remarkably the mature biofilms of A. baumannii and L. monocytogenes remarkably at a percentage ranging between 52.76% and 75.02%, and they reached an inhibition percentage of 69.28 % against E. coli. Biphenyl derivatives were also effective in exerting an inhibitory action against the mature biofilm of P. aeruginosa (inhibition ranging from 59.38% to 81.08%) and Staphylococcus aureus (inhibition percentage reached 82.94%). Of note, the biphenyl derivatives resulted in being capable of acting on the metabolism of the cells within the biofilm of all five pathogens.
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Affiliation(s)
- Marzieh Rahmani Samani
- Department of Pharmacy, University of Salerno, Via Giovanni II n. 132, 84084 Fisciano, Italy; (M.R.S.); (G.D.); (M.M.)
- PhD Program in Drug Discovery and Development, University of Salerno, via Giovanni Paolo II n. 132, 84084 Fisciano, Italy
| | - Gilda D’Urso
- Department of Pharmacy, University of Salerno, Via Giovanni II n. 132, 84084 Fisciano, Italy; (M.R.S.); (G.D.); (M.M.)
| | - Filomena Nazzaro
- Institute of Food Science-National Research Council (CNR-ISA), Via Roma, 64, 83100 Avellino, Italy; (F.N.); (F.F.)
| | - Florinda Fratianni
- Institute of Food Science-National Research Council (CNR-ISA), Via Roma, 64, 83100 Avellino, Italy; (F.N.); (F.F.)
| | - Milena Masullo
- Department of Pharmacy, University of Salerno, Via Giovanni II n. 132, 84084 Fisciano, Italy; (M.R.S.); (G.D.); (M.M.)
| | - Sonia Piacente
- Department of Pharmacy, University of Salerno, Via Giovanni II n. 132, 84084 Fisciano, Italy; (M.R.S.); (G.D.); (M.M.)
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Trifan A, Czerwińska ME, Zengin G, Esslinger N, Grubelnik A, Wolfram E, Skalicka-Woźniak K, Luca SV. Influence of pyrrolizidine alkaloids depletion upon the biological activity of Symphytum officinale L. extracts. JOURNAL OF ETHNOPHARMACOLOGY 2023; 303:116010. [PMID: 36493995 DOI: 10.1016/j.jep.2022.116010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Comfrey (Symphytum officinale L., Boraginaceae) root preparations are used as both traditional remedies and therapeutic agents in treating pain and inflammation associated with joint, bone, and muscle ailments. Even though numerous phytochemicals contribute to the beneficial effects of comfrey, the presence of toxic pyrrolizidine alkaloids (PAs) overshadows its uses. AIM OF THE STUDY In this work, different PA-/mucilage-depleted/undepleted comfrey root extracts were subjected to detailed phytochemical characterization and biological evaluation. MATERIALS AND METHODS The phytochemical profiling was performed by LC-HRMS/MS. The quantification of PAs and major phenolic compounds was carried out by LC-MS/MS and LC-DAD. Antioxidant and enzyme inhibitory activity was determined by in vitro free radical scavenging, ion reducing, metal chelating, cholinesterase, tyrosinase, amylase, and glucosidase assays. Using an ex vivo model of LPS-stimulated neutrophils, their viability (as measured by flow cytometry) and the release of IL-1β, IL-8, and TNF-α were determined (ELISA assay). RESULTS 12 phenolic acids, six PAs, three organic acids, two fatty acids, and two sugars were identified in the obtained comfrey extracts. The PA-depleted materials contained PAs levels below 2 ppm, whereas the removal of mucilage increased the content of rosmarinic acid, globoidnan A, globoidnan B, and rabdosiin. PA-depletion did not significantly affect the antioxidant potential. However, the radical scavenging and metal reducing properties were higher in the mucilage-depleted extracts. Neither PA-depletion nor mucilage-depletion had considerable effects on the in vitro inhibitory activity of cholinesterases, tyrosinase, amylase, and glucosidase or release of ex vivo pro-inflammatory cytokines (e.g., IL-1β, IL-8, and TNF-α) in LPS-stimulated neutrophils. CONCLUSIONS In light of their superior safety profiles, PA-depleted comfrey extracts can be utilized further in cosmetic and pharmaceutical products.
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Affiliation(s)
- Adriana Trifan
- Department of Pharmacognosy and Phytotherapy, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 700115, Iasi, Romania.
| | - Monika E Czerwińska
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097, Warsaw, Poland; Centre for Preclinical Research, Medical University of Warsaw, 02-097, Warsaw, Poland.
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, 42130, Konya, Turkey.
| | | | | | - Evelyn Wolfram
- Phytopharmacy and Natural Products Research Group, Zurich University of Applied Sciences, 8820, Wädenswil, Switzerland.
| | | | - Simon Vlad Luca
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, 85354, Freising, Germany.
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Trifan A, Zengin G, Sinan KI, Esslinger N, Grubelnik A, Wolfram E, Skalicka-Woźniak K, Minceva M, Luca SV. Influence of the Post-Harvest Storage Time on the Multi-Biological Potential, Phenolic and Pyrrolizidine Alkaloid Content of Comfrey ( Symphytum officinale L.) Roots Collected from Different European Regions. PLANTS 2021; 10:plants10091825. [PMID: 34579358 PMCID: PMC8471851 DOI: 10.3390/plants10091825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 08/28/2021] [Accepted: 09/01/2021] [Indexed: 11/27/2022]
Abstract
Comfrey (Symphytum officinale L.) roots are well-known bioactive ingredients included in various cosmeceutical and pharmaceutical preparations. In this study, the influence of the post-harvest storage on the chemico-biological potential of roots collected from different European regions and stored for up to six months was investigated. Total phenolic content (TPC) and total phenolic acid content (TPAC) were spectrophotometrically estimated, whereas the levels of individual phenolic and pyrrolizidine alkaloidal markers were determined by HPLC-DAD and HPLC-MS/MS, respectively. The changes in the biological potential was tracked via antioxidant (DPPH, ABTS, CUPRAC, and FRAP) and anti-enzymatic (cholinesterase, tyrosinase, glucosidase, and amylase) assays. TPC and TPAC varied from 6.48–16.57 mg GAE/g d.w. root and from 2.67–9.03 mg CAE/g, respectively. The concentration of the four phenolics (rosmarinic acid, globoidnan A, globoidnan B, rabdosiin) and six pyrrolizidine alkaloids generally showed maximum values at 1–3 months, after which their levels significantly decreased. With respect to the bioassays, the samples showed a wide range of antioxidant and anti-enzymatic effects; however, a direct storage time–bioactivity relationship was not observed. Similar conclusions were also revealed by the multivariate and correlation analyses. Our study could improve the current knowledge of the shelf-life properties of comfrey-based products and enhance their industrial exploitation.
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Affiliation(s)
- Adriana Trifan
- Department of Pharmacognosy, “Grigore T. Popa” University of Medicine and Pharmacy Iasi, 700115 Iasi, Romania;
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya 42130, Turkey;
- Correspondence: (G.Z.); (S.V.L.)
| | - Kouadio Ibrahime Sinan
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya 42130, Turkey;
| | - Nils Esslinger
- Alpinamed AG, 9306 Freidorf, Switzerland; (N.E.); (A.G.)
| | | | - Evelyn Wolfram
- Phytopharmacy and Natural Products Research Group, Zurich University of Applied Sciences, 8820 Wädenswil, Switzerland;
| | - Krystyna Skalicka-Woźniak
- Independent Laboratory of Natural Products Chemistry, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany;
| | - Simon Vlad Luca
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany;
- Correspondence: (G.Z.); (S.V.L.)
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Marchev AS, Vasileva LV, Amirova KM, Savova MS, Balcheva-Sivenova ZP, Georgiev MI. Metabolomics and health: from nutritional crops and plant-based pharmaceuticals to profiling of human biofluids. Cell Mol Life Sci 2021; 78:6487-6503. [PMID: 34410445 PMCID: PMC8558153 DOI: 10.1007/s00018-021-03918-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 12/19/2022]
Abstract
During the past decade metabolomics has emerged as one of the fastest developing branches of “-omics” technologies. Metabolomics involves documentation, identification, and quantification of metabolites through modern analytical platforms in various biological systems. Advanced analytical tools, such as gas chromatography–mass spectrometry (GC/MS), liquid chromatography–mass spectroscopy (LC/MS), and non-destructive nuclear magnetic resonance (NMR) spectroscopy, have facilitated metabolite profiling of complex biological matrices. Metabolomics, along with transcriptomics, has an influential role in discovering connections between genetic regulation, metabolite phenotyping and biomarkers identification. Comprehensive metabolite profiling allows integration of the summarized data towards manipulation of biosynthetic pathways, determination of nutritional quality markers, improvement in crop yield, selection of desired metabolites/genes, and their heritability in modern breeding. Along with that, metabolomics is invaluable in predicting the biological activity of medicinal plants, assisting the bioactivity-guided fractionation process and bioactive leads discovery, as well as serving as a tool for quality control and authentication of commercial plant-derived natural products. Metabolomic analysis of human biofluids is implemented in clinical practice to discriminate between physiological and pathological state in humans, to aid early disease biomarker discovery and predict individual response to drug therapy. Thus, metabolomics could be utilized to preserve human health by improving the nutritional quality of crops and accelerating plant-derived bioactive leads discovery through disease diagnostics, or through increasing the therapeutic efficacy of drugs via more personalized approach. Here, we attempt to explore the potential value of metabolite profiling comprising the above-mentioned applications of metabolomics in crop improvement, medicinal plants utilization, and, in the prognosis, diagnosis and management of complex diseases.
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Affiliation(s)
- Andrey S Marchev
- Department Plant Cell Biotechnology, Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria.,Laboratory of Metabolomics, Department of Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 4000, Plovdiv, Bulgaria
| | - Liliya V Vasileva
- Department Plant Cell Biotechnology, Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria.,Laboratory of Metabolomics, Department of Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 4000, Plovdiv, Bulgaria
| | - Kristiana M Amirova
- Department Plant Cell Biotechnology, Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria.,Laboratory of Metabolomics, Department of Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 4000, Plovdiv, Bulgaria
| | - Martina S Savova
- Department Plant Cell Biotechnology, Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria.,Laboratory of Metabolomics, Department of Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 4000, Plovdiv, Bulgaria
| | - Zhivka P Balcheva-Sivenova
- Department Plant Cell Biotechnology, Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria.,Laboratory of Metabolomics, Department of Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 4000, Plovdiv, Bulgaria
| | - Milen I Georgiev
- Department Plant Cell Biotechnology, Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria. .,Laboratory of Metabolomics, Department of Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 4000, Plovdiv, Bulgaria.
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8
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Trifan A, Zengin G, Sinan KI, Wolfram E, Skalicka-Woźniak K, Luca SV. LC-HRMS/MS phytochemical profiling of Symphytum officinale L. and Anchusa ochroleuca M. Bieb. (Boraginaceae): Unveiling their multi-biological potential via an integrated approach. J Pharm Biomed Anal 2021; 204:114283. [PMID: 34329923 DOI: 10.1016/j.jpba.2021.114283] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/21/2021] [Accepted: 07/22/2021] [Indexed: 12/14/2022]
Abstract
This study was aimed at providing a comprehensive phytochemical characterization and multi-biological assessment of Symphytum officinale L., a medicinal plant with a noteworthy traditional use, and Anchusa ochroleuca M. Bieb., a Boraginaceae species from the Romanian flora. The dichloromethane, methanol and 65 % ethanol extracts obtained from the roots and aerial parts of both plants revealed the presence of numerous phenolic acids, oxygenated fatty acids, pyrrolizidine alkaloids (PAs) and flavonoids, as assessed by LC-HRMS/MS analysis. Consistent with their higher total phenolic content, the polar aerial part extracts of S. officinale and root extracts of A. ochroleuca showed the most significant antioxidant activities, as evaluated by DPPH (173.22-216.98 mg TE/g) and ABTS (219.41-311.97 mg TE/g) radical scavenging, CUPRAC (387.18-626.40 mg TE/g), FRAP (199.36-299.86 mg TE/g) and total antioxidant capacity (2.28-2.68 mmol TE/g). Furthermore, both plants exhibited good tyrosinase (19.11-43.89 mg KAE/g) and α-glucosidase (2.45-12.54 mmol ACAE/g) inhibitory effects. The orthogonal projections to latent structures discriminant analysis (OPLS-DA) allowed the objective differentiation between the roots and aerial parts of the two investigated species based on their phytochemical and biological profiles. The partial least square (PLS) analysis showed that several individual phenolic acids, such as danshensu, rabdosiin and rosmarinic acid, significantly contributed to the antioxidant potential of both Boraginaceae species, whilst the relative levels of sucrose were positively correlated with the anti-enzymatic properties. Overall, S. officinale and A. ochroleuca could be regarded as rich sources of bioactive phytochemicals that could further lead to developing novel phyto-pharmaceutical commodities.
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Affiliation(s)
- Adriana Trifan
- Department of Pharmacognosy, Grigore T. Popa University of Medicine and Pharmacy Iasi, 700115, Iasi, Romania
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, University Campus, 42130, Konya, Turkey.
| | - Kouadio Ibrahime Sinan
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, University Campus, 42130, Konya, Turkey
| | - Evelyn Wolfram
- Phytopharmacy and Natural Products Research Group, Zurich University of Applied Sciences, 8820, Wädenswil, Switzerland
| | - Krystyna Skalicka-Woźniak
- Independent Laboratory of Natural Products Chemistry, Medical University of Lublin, 20-093, Lublin, Poland
| | - Simon Vlad Luca
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, 85354, Freising, Germany.
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9
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Trifan A, Wolfram E, Esslinger N, Grubelnik A, Skalicka-Woźniak K, Minceva M, Luca SV. Globoidnan A, rabdosiin and globoidnan B as new phenolic markers in European-sourced comfrey (Symphytum officinale L.) root samples. PHYTOCHEMICAL ANALYSIS : PCA 2021; 32:482-494. [PMID: 33015885 DOI: 10.1002/pca.2996] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 05/25/2023]
Abstract
INTRODUCTION Symphytum officinale L. (comfrey, Boraginaceae) is a cultivated or spontaneously growing medicinal plant that is traditionally used for the treatment of bone fractures, hematomas, muscle pains and joint pains. A wide range of topical preparations and dried roots for ex tempore applications are marketed in European drug stores or pharmacies. OBJECTIVE The aim of this study was to perform the qualitative and quantitative analysis of pyrrolizidine alkaloids (PAs) and phenolic compounds in the hydroethanolic extracts of 16 commercial comfrey root batches purchased from 12 different European countries. METHODS Liquid chromatography hyphenated with high-resolution tandem mass spectrometry (LC-HRMS/MS) was used for the profiling of PAs and phenolic compounds, whereas LC-MS/MS and liquid chromatography with diode array detection (LC-DAD) were used for their quantification. RESULTS 20 PAs (i.e. intermedine, lycopsamine, acetylintermedine, acetyllycopsamine, symphytine, symphytine-N-oxide), 17 phenolic compounds (i.e. caffeic and rosmarinic acids, rabdosiin, globoidnan A, globoidnan B) and 9 nonphenolic compounds (sugars, organic and fatty acids) were fully or partly annotated in the analysed samples. In addition, the quantitative analyses revealed that globoidnan B, rabdosiin and globoidnan A are new phenolic markers that can be used together with rosmarinic acid and PAs for the quality control of commercial comfrey root batches. CONCLUSIONS This study brings new insights into the phytochemical complexity of S. officinale, revealing not only numerous toxic PAs, but also a significant number of valuable phenolic compounds that could contribute to the bioactivities of comfrey-based preparations.
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Affiliation(s)
- Adriana Trifan
- Department of Pharmacognosy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, 700115, Romania
| | - Evelyn Wolfram
- Phytopharmacy and Natural Products Research Group, Zurich University of Applied Sciences, Wädenswil, 8820, Switzerland
| | | | | | - Krystyna Skalicka-Woźniak
- Independent Laboratory of Natural Products Chemistry, Department of Pharmacognosy, Medical University of Lublin, Lublin, 20-093, Poland
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Freising, 85354, Germany
| | - Simon Vlad Luca
- Biothermodynamics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Freising, 85354, Germany
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