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Isla KKY, Tanae MM, de Lima-Landman MTR, de Magalhães PM, Lapa AJ, Souccar C. Vasorelaxant effects of ellagitannins isolated from Cuphea carthagenensis. PLANTA MEDICA 2024; 90:276-285. [PMID: 38272038 DOI: 10.1055/a-2240-7372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Cuphea carthagenensis (Jacq.) J. F. Macbr. is a popular plant in Brazilian folk medicine owing to its hypotensive and central nervous system depressant effects. This study aimed to validate the hypotensive effect of the plant's aqueous extract (AE) in rats and examine the vascular actions of three hydrolyzable tannins, oenothein B, woodfordin C, and eucalbanin B, isolated from AE. Systolic blood pressure in unanesthetized rats was determined using the non-invasive tail-cuff method. Oral treatment of normotensive rats with 0.5 and 1.0 g/kg/day AE induced a dose-related hypotensive effect after 1 week. In rat aortic rings pre-contracted with noradrenaline, all ellagitannins (20 - 180 µM) induced a concentration-related vasorelaxation. This effect was blocked by either removing the endothelium or pre-incubating with NG-nitro-l-arginine methyl ester (10 µM), an inhibitor of nitric oxide (NO) synthase. In KCl-depolarized rat portal vein preparations, the investigated compounds did not affect significantly the maximal contractile responses and pD2 values of the concentration-response curves to CaCl2. Our results demonstrated the hypotensive effect of C. carthagenensis AE in unanesthetized rats. All isolated ellagitannins induced vasorelaxation in vitro via activating NO synthesis/NO release from endothelial cells, without altering the Ca2+ influx in vascular smooth muscle preparations. Considering the low oral bioavailability of ellagitannins, the determined in vitro actions of these compounds are unlikely to account for the hypotensive effect of AE in vivo. It remains to be determined the role of the bioactive ellagitannin-derived metabolites in the hypotensive effect observed after oral treatment of unanesthetized rats with the plant extract.
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Affiliation(s)
- Kaori Katiuska Yamaguchi Isla
- Department of Pharmacology, Section of Natural Products, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Mirtes Midori Tanae
- Department of Pharmacology, Section of Natural Products, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Pedro Melillo de Magalhães
- Multidisciplinary Center for Chemical, Biological and Agricultural Research, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Antônio José Lapa
- Department of Pharmacology, Section of Natural Products, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Caden Souccar
- Department of Pharmacology, Section of Natural Products, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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Silva CA, Véras JH, Ventura JA, de Melo Bisneto AV, de Oliveira MG, Cardoso Bailão EFL, E Silva CR, Cardoso CG, da Costa Santos S, Chen-Chen L. Chemopreventive effect and induction of DNA repair by oenothein B ellagitannin isolated from leaves of Eugenia uniflora in Swiss Webster treated mice. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:929-941. [PMID: 37728073 DOI: 10.1080/15287394.2023.2259425] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Oenothein B (OeB) is a dimeric ellagitannin with potent antioxidative, antitumor, immunomodulatory, and anti-inflammatory properties. Despite the promising activities of OeB, studies examining the genotoxic or protective effects of this ellagitannin on DNA are scarce. Therefore, to further comprehensively elucidate the chemopreventive profile of OeB, the aim of this study was to evaluate the mutagenic and antimutagenic actions of OeB using Salmonella typhimurium strains with the Ames test. The micronucleus (MN) test and comet assay were used to assess the anticytotoxic and antigenotoxic effects of OeB on mouse bone marrow cells following differing treatments (pre-, co-, and post-treatment) in response to cyclophosphamide (CPA)-induced DNA damage. In addition, histopathological analyses were performed to assess liver and kidney tissues of Swiss Webster treated mice. Our results did not detect mutagenic or antimutagenic activity attributed to OeB at any concentration in the Ames test. Regarding the MN test, data showed that this ellagitannin exerted antigenotoxic and anticytotoxic effects against CPA-induced DNA damage under all treatment conditions. However, no anticytotoxic action was observed in MN test after pre-treatment with the highest doses of OeB. In addition, OeB demonstrated antigenotoxic effects in the comet assay for all treatments. Histopathological analyses indicated that OeB attenuated the toxic effects of CPA in mouse liver and kidneys. These findings suggest that OeB exerted a chemoprotective effect following pre- and co-treatments and a DNA repair action in post-treatment experiments. Our findings indicate that OeB protects DNA against CPA-induced damaging agents and induces post-damage DNA repair.
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Affiliation(s)
| | | | - Joyce Aves Ventura
- Institute of Biological Sciences, Federal University of Goiás, Goiânia-GO, Brazil
| | | | | | | | | | - Clever Gomes Cardoso
- Institute of Biological Sciences, Federal University of Goiás, Goiânia-GO, Brazil
| | | | - Lee Chen-Chen
- Institute of Biological Sciences, Federal University of Goiás, Goiânia-GO, Brazil
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G de Oliveira FM, Rodrigues Pereira de Oliveira Borlot J, Kitagawa RR, Gonçalves RDCR, Batista de Oliveira Filpo RC, Kuster RM. Characterization of phenolic compounds in Eugenia uniflora leaves by ESI(-) FT-ICR MS, analysis of cytotoxic activity on gastric adenocarcinoma (AGS cells), and anti- Helicobacter pylori activity. Nat Prod Res 2023:1-5. [PMID: 37975557 DOI: 10.1080/14786419.2023.2276390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 10/22/2023] [Indexed: 11/19/2023]
Abstract
Eugenia uniflora leaves are a source of flavonoids and ellagitannins, and the Brazilian population uses them to treat various diseases, including gastrointestinal disorders. This study aimed to determine if the ethanol extract and other derivatives are effective cytotoxic agents against gastric adenocarcinoma (AGS cells) and anti-H. pylori agent, its chemical composition, and mass spectrometry characterization of the more abundant compounds. The results were compared with the literature. The aqueous fraction, rich in Oenothein B and Gemin D/Hippomanin A, showed anti-H. pylori activity and higher cytotoxicity on AGS cells compared to the other samples analysed. Furthermore, the ESI(-) FT-ICR MS characterized the more abundant phenolic compounds, including Quinic Acid, Myricitrin, Gemin D/Hippomanin A, and Oenothein. Therefore, the activity of the ethanolic extract and aqueous fraction for gastric cancer and against H-pylori seems to originate from the antiproliferative and bacteriostatic effects of tannins and flavonoids.
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Dreger M, Adamczak A, Foksowicz-Flaczyk J. Antibacterial and Antimycotic Activity of Epilobium angustifolium L. Extracts: A Review. Pharmaceuticals (Basel) 2023; 16:1419. [PMID: 37895890 PMCID: PMC10609845 DOI: 10.3390/ph16101419] [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: 09/05/2023] [Revised: 09/25/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
The aim of this work was to provide an overview of available information on the antibacterial and antifungal properties of Epilobium angustifolium extracts. A literature search of Scopus, PubMed/Medline, and Google Scholar for peer-reviewed articles published between January 2000 and June 2023 was undertaken. A total of 23 studies were eligible for inclusion in this review. Significant variation of antimicrobial activity depending on the tested species and strains, type of extract solvent, or plant organs utilized for the extract preparation was found. E. angustifolium extracts were active against both Gram-positive and Gram-negative bacteria and showed antimycotic effects against the fungi of Microsporum canis and Trichophyton tonsurans and the dermatophytes Arthroderma spp. Greater susceptibility of Gram-positive than Gram-negative bacteria to fireweed extracts was found. A strong antibacterial effect was recorded for Staphylococcus aureus, Bacillus cereus, Micrococcus luteus, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii including multi-drug resistant strains. E. angustifolium extract might find practical application as an antimicrobial in wound healing, components of cosmetic products for human and animals, or as food preservatives.
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Affiliation(s)
- Mariola Dreger
- Department of Biotechnology, Institute of Natural Fibres and Medicinal Plants—National Research Institute, Wojska Polskiego 71b, 60-630 Poznan, Poland
| | - Artur Adamczak
- Department of Breeding and Botany of Useful Plants, Institute of Natural Fibres and Medicinal Plants—National Research Institute, Kolejowa 2, 62-064 Plewiska, Poland;
| | - Joanna Foksowicz-Flaczyk
- Department of Bioproducts Engineering, Institute of Natural Fibres and Medicinal Plants—National Research Institute, Wojska Polskiego 71b, 60-630 Poznan, Poland;
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Silva V, Silva A, Ribeiro J, Aires A, Carvalho R, Amaral JS, Barros L, Igrejas G, Poeta P. Screening of Chemical Composition, Antimicrobial and Antioxidant Activities in Pomegranate, Quince, and Persimmon Leaf, Peel, and Seed: Valorization of Autumn Fruits By-Products for a One Health Perspective. Antibiotics (Basel) 2023; 12:1086. [PMID: 37508182 PMCID: PMC10376090 DOI: 10.3390/antibiotics12071086] [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: 05/22/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 07/30/2023] Open
Abstract
Antimicrobial resistance is increasing globally and is now one of the major public health problems. Therefore, there is a need to search for new antimicrobial agents. The food industry generates large amounts of by-products that are rich in bioactive compounds, such as phenolic compounds, which are known to have several health benefits, including antioxidant and antimicrobial properties. Thus, we aimed to characterize the phenolic compounds present in pomegranate, quince, and persimmon by-products, as well as their antioxidant and antimicrobial activities. Phenolic compounds were extracted from pomegranate, quince, and persimmon leaves, seeds, and peels using a mixture of ethanol/water (80/20). The polyphenol profile of the extracts was determined by high-performance liquid chromatography. The antioxidant activity of the extracts was determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), and cupric reducing antioxidant capacity (CUPRAC) methods. Antimicrobial susceptibility was evaluated using the Kirby-Bauer disk diffusion method. In general, leaves showed higher concentrations of phenolics than the peel and seeds of fruits. In total, 23 phenolic compounds were identified and quantified, with sanguiin and apigenin-3-O-galactoside being present in the highest concentrations. Leaf extracts of pomegranate showed higher antioxidant activities than the other components in all methods used. In general, all extracts had a greater antimicrobial activity against Gram-positive bacteria. Persimmon leaf and seed extracts inhibited a greater number of bacteria, both Gram-positive and -negative. The lowest minimum inhibitory concentration (MIC) detected among Gram-positive and -negative bacteria was 10 mg/mL for pomegranate peel and leaf extracts against Staphylococcus aureus and S. pseudintermedius and for pomegranate leaf extract against Escherichia coli. Our results reinforce the need to value food industry by-products that could be used as food preservatives and antibiotic adjuvants against multiresistant bacteria.
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Affiliation(s)
- Vanessa Silva
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, 2829-516 Caparica, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Adriana Silva
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, 2829-516 Caparica, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Jessica Ribeiro
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, 2829-516 Caparica, Portugal
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal
| | - Alfredo Aires
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, CITAB, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Rosa Carvalho
- Department of Agronomy, School of Agrarian and Veterinary Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Joana S Amaral
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Gilberto Igrejas
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, 2829-516 Caparica, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Patrícia Poeta
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, 2829-516 Caparica, Portugal
- Associate Laboratory for Animal and Veterinary Science (AL4AnimalS), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Veterinary and Animal Research Centre (CECAV), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
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Kyriakou S, Tragkola V, Paraskevaidis I, Plioukas M, Trafalis DT, Franco R, Pappa A, Panayiotidis MI. Chemical Characterization and Biological Evaluation of Epilobium parviflorum Extracts in an In Vitro Model of Human Malignant Melanoma. PLANTS (BASEL, SWITZERLAND) 2023; 12:1590. [PMID: 37111814 PMCID: PMC10146124 DOI: 10.3390/plants12081590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/16/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Malignant melanoma is an aggressive type of skin cancer characterised by high metastatic capacity and mortality rate. On the other hand, Epilobium parviflorum is known for its medicinal properties, including its anticancer potency. In this context, we aimed to (i) isolate various extracts of E. parviflorum, (ii) characterize their phytochemical content, and (iii) determine their cytotoxic potential in an in vitro model of human malignant melanoma. To these ends, we utilized various spectrophotometric and chromatographic (UPLC-MS/MS) approaches to document the higher content of the methanolic extract in polyphenols, soluble sugars, proteins, condensed tannins, and chlorophylls -a and -b as opposed to those of dichloromethane and petroleum. In addition, the cytotoxicity profiling of all extracts was assessed through a colorimetric-based Alamar Blue assay in human malignant melanoma (A375 and COLO-679) as well as non-tumorigenic immortalized keratinocyte (HaCaT) cells. Overall, the methanolic extract was shown to exert significant cytotoxicity, in a time- and concentration-dependent manner, as opposed to the other extracts. The observed cytotoxicity was confined only to human malignant melanoma cells, whereas non-tumorigenic keratinocyte cells remained relatively unaffected. Finally, the expression levels of various apoptotic genes were assessed by qRT-PCR, indicating the activation of both intrinsic and extrinsic apoptotic cascades.
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Affiliation(s)
- Sotiris Kyriakou
- Department of Cancer Genetics, Therapeutics & Ultrastructural Pathology, The Cyprus Institute of Neurology & Genetics, Nicosia 2371, Cyprus
| | - Venetia Tragkola
- Department of Cancer Genetics, Therapeutics & Ultrastructural Pathology, The Cyprus Institute of Neurology & Genetics, Nicosia 2371, Cyprus
| | - Ioannis Paraskevaidis
- Department of Cancer Genetics, Therapeutics & Ultrastructural Pathology, The Cyprus Institute of Neurology & Genetics, Nicosia 2371, Cyprus
| | - Mihalis Plioukas
- Department of Life & Health Sciences, School of Sciences & Engineering, University of Nicosia, Nicosia 2417, Cyprus
| | - Dimitrios T. Trafalis
- Laboratory of Pharmacology, Medical School, National & Kapodistrian University of Athens, 11527 Athens, Greece
| | - Rodrigo Franco
- Redox Biology Centre, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
- School of Veterinary & Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Aglaia Pappa
- Department of Molecular Biology & Genetics, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Mihalis I. Panayiotidis
- Department of Cancer Genetics, Therapeutics & Ultrastructural Pathology, The Cyprus Institute of Neurology & Genetics, Nicosia 2371, Cyprus
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Bioactive Compounds, Antioxidant Activity and Sensory Properties of Northern Red Oak ( Quercus rubra L., syn. Q. borealis F. Michx) Seeds Affected by Roasting Conditions. Molecules 2023; 28:molecules28052299. [PMID: 36903546 PMCID: PMC10005602 DOI: 10.3390/molecules28052299] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
The nutritional value and health-promoting properties cause the fruits (acorns) of Quercus spp. to have great potential for use in the food industry as functional ingredients and antioxidants source. The aim of this study was to examine the bioactive compound's composition, antioxidant potential, physicochemical properties and taste characteristics of northern red oak (Quercus rubra L.) seeds subjected to roasting at different temperatures and times. The results indicate that the roasting markedly affects the composition of bioactive components of acorns. In general, the use of roasting temperatures greater than 135 °C causes a decrease in the total phenolic compound content of Q. rubra seeds. Furthermore, along with an increase in temperature and thermal processing time, a remarkable increase in melanoidins, which are the final products of the Maillard reaction, was also observed in processed Q. rubra seeds. Both unroasted and roasted acorn seeds had high DPPH radical scavenging capacity, ferric reducing antioxidant power (FRAP) and ferrous ion chelating activity. Roasting at 135 °C caused negligible changes in total phenolics content and antioxidant activity of Q. rubra seeds. Almost all samples had lower antioxidant capacity along with an increase in the roasting temperatures. Additionally, thermal processing of acorn seeds contributes to the development of the brown color and the reduction of bitterness, and the creation of a more pleasant taste of the final products. Overall, the results of this study show that both unroasted and roasted Q. rubra seeds may be an interesting source of bioactive compounds with high antioxidant activity. Therefore, they can be used as a functional ingredient of beverages or food.
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Lasinskas M, Jariene E, Vaitkeviciene N, Kulaitiene J, Adamaviciene A, Hallmann E. The Impact of Solid-Phase Fermentation on Flavonoids, Phenolic Acids, Tannins and Antioxidant Activity in Chamerion angustifolium (L.) Holub (Fireweed) Leaves. PLANTS (BASEL, SWITZERLAND) 2023; 12:277. [PMID: 36678990 PMCID: PMC9863328 DOI: 10.3390/plants12020277] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/30/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
At present, the consumption of medical plants and functional foods is growing across the whole world. Fireweed (Chamerion angustifolium (L.) Holub), an important medicinal plant that has various pharmacological effects (antioxidant, anti-inflammatory, anticancer and others), can improve the state of health and well-being and reduce the risk of various diseases. The aim of this work was to investigate polyphenols (flavonoids, phenolic acids and tannins) and antioxidant activity in fireweed leaves fermented for 24, 48 and 72 h in solid-phase fermentation under aerobic and anaerobic conditions. High-performance liquid chromatography (HPLC) for polyphenols and the spectrophotometric method based on quenching of stable colored radical (ABTS•+) for antioxidant activity determinations were used. The results showed that the highest amounts of total polyphenols, total flavonoids and tannin oenothein B in the dried matter were found after 72 h and the highest total phenolic acids after 48 h of anaerobic solid-phase fermentation. The highest antioxidant activity was found after 72 h of solid-phase fermentation under aerobic conditions.
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Affiliation(s)
- Marius Lasinskas
- Department of Plant Biology and Food Sciences, Agriculture Academy, Vytautas Magnus University, Donelaicio St. 58, 44248 Kaunas, Lithuania
| | - Elvyra Jariene
- Department of Plant Biology and Food Sciences, Agriculture Academy, Vytautas Magnus University, Donelaicio St. 58, 44248 Kaunas, Lithuania
| | - Nijole Vaitkeviciene
- Department of Plant Biology and Food Sciences, Agriculture Academy, Vytautas Magnus University, Donelaicio St. 58, 44248 Kaunas, Lithuania
| | - Jurgita Kulaitiene
- Department of Plant Biology and Food Sciences, Agriculture Academy, Vytautas Magnus University, Donelaicio St. 58, 44248 Kaunas, Lithuania
| | - Aida Adamaviciene
- Department of Agroecosystems and Soil Sciences, Agriculture Academy, Vytautas Magnus University, Donelaicio St. 58, 44248 Kaunas, Lithuania
| | - Ewelina Hallmann
- Department of Functional and Organic Food, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences, Nowoursynowska 15c, 02-776 Warsaw, Poland
- Bioeconomy Research Institute, Agriculture Academy, Vytautas Magnus University, Donelaicio St. 58, 44248 Kaunas, Lithuania
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Xu L, Li W, Chen SY, Deng XW, Deng WF, Liu G, Chen YJ, Cao Y. Oenothein B ameliorates hepatic injury in alcoholic liver disease mice by improving oxidative stress and inflammation and modulating the gut microbiota. Front Nutr 2022; 9:1053718. [PMID: 36579073 PMCID: PMC9792150 DOI: 10.3389/fnut.2022.1053718] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/04/2022] [Indexed: 12/14/2022] Open
Abstract
Introduction Alcoholic liver disease (ALD) is a global health problem for which there is no current food and drug administration (FDA)-approved therapy. Oenothein B (OEB) is a macrocyclic dimer ellagic tannin that possesses abundant biological activities including antioxidant, anti-inflammation, antitumor, immunomodulatory, and antimicrobial properties. Materials and methods In this study, the hepatoprotective effect of OEB against ALD was investigated in vivo and in vitro. Results We found that OEB treatment dramatically reduced alcohol-induced hepatic injury, as evidenced by decreased levels of aminotransferases and inflammatory biomarkers and increased antioxidant capacity in OEB-treated groups. Discussion OEB treatment alleviated oxidative stress by upregulating the Keap1/Nrf2 signaling pathway and inhibited inflammation by downregulating the TLR4/NF-κB signaling pathway. Additionally, OEB treatment positively improved alcohol-induced intestinal microbial dysbiosis by modulating the structure and composition of gut microbiota. Interestingly, we observed the increasement of short-chain fatty acid (SCFA) producers (Muribaculaceae) and the decreasement of Gram-negative bacteria (Akkermansia) in the OEB treatment groups, which may contribute to the inhibition of hepatic oxidative stress and inflammation via the gut-liver axis. In summary, our findings indicate that OEB is a promising therapeutic strategy for preventing and treating ALD.
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Affiliation(s)
- Lu Xu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Wei Li
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Shenzhen, China
| | - Shu-yi Chen
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xi-wen Deng
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Wei-feng Deng
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Guo Liu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yun-jiao Chen
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China,Yun-jiao Chen,
| | - Yong Cao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangdong Research Center for Engineering Technology in Bioactive Natural Products, College of Food Science, South China Agricultural University, Guangzhou, China,*Correspondence: Yong Cao,
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Sobolewska D, Galanty A, Granica S, Podolak I, Olszewska MA, Owczarek A, Paulino N, Michalska K. In vitro cytotoxic activity of Cuphea ingrata Cham. & Schltdl. extracts related to the oenothein B content. Nat Prod Res 2022; 37:1693-1697. [PMID: 35876228 DOI: 10.1080/14786419.2022.2103699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Cuphea ingrata is a traditional medicinal plant species of the Lythraceae family. This work reports on the cytotoxic activity of the methanolic extract from the aerial parts of C. ingrata and the n-butanol and ethyl acetate fractions against human skin and prostate cancer cells. The selectivity of action was tested in normal skin keratinocytes HaCaT and prostate epithelial cells PNT2. The ethyl acetate fraction showed the highest activity in all three human skin cancer cell lines: A375, HTB-140, WM793, with IC50 = 15.90; 3.40; 18.75 μg/mL, respectively. To obtain comparative information on the chemical composition, a quantitative analysis of oenothein B was performed using the UHPLC-PDA method. An analysis of its cytotoxic activity was also carried out.
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Affiliation(s)
- Danuta Sobolewska
- Department of Pharmacognosy, Jagiellonian University, Medical College, Kraków, Poland
| | - Agnieszka Galanty
- Department of Pharmacognosy, Jagiellonian University, Medical College, Kraków, Poland
| | - Sebastian Granica
- Centre for Preclinical Research, Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy Medical University of Warsaw, Microbiota Lab, Warsaw, Poland
| | - Irma Podolak
- Department of Pharmacognosy, Jagiellonian University, Medical College, Kraków, Poland
| | - Monika Anna Olszewska
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Lodz, Lodz, Poland
| | - Aleksandra Owczarek
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Lodz, Lodz, Poland
| | | | - Klaudia Michalska
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Phytochemistry, Kraków, Poland
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11
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Activation of Extracellular Signal-Regulated Kinase 2 and cAMP Response Element-Binding Protein in Cultured Neurons by the Macrocyclic Ellagitannin Oenothein B. NEUROSCI 2022. [DOI: 10.3390/neurosci3030028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
(1) Background: The findings of our recent in vivo study indicated that the oral administration of oenothein B, a unique macrocyclic ellagitannin, activated extracellular signal-regulated kinase (ERK) 2 and cAMP response element-binding protein (CREB) in the mouse brain. A large hydrophilic oenothein B is unable to reach the brain, suggesting that any metabolite(s) of oenothein B might function in the brain. (2) Results: The addition of oenothein B to the culture medium of rat cortical neurons induced the prompt and significant activation of ERK2 and CREB. (3) Conclusions: The activation of ERK2 and CREB is crucial for synaptic transmission and learning/memory formation in the brain. The present results suggest oenothein B exerts neurotrophic/neuroprotective effects in the brain through the modulation of neuronal signaling pathways, if it reaches the brain.
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12
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Nowak A, Zielonka-Brzezicka J, Perużyńska M, Klimowicz A. Epilobium angustifolium L. as a Potential Herbal Component of Topical Products for Skin Care and Treatment-A Review. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113536. [PMID: 35684473 PMCID: PMC9182203 DOI: 10.3390/molecules27113536] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 11/16/2022]
Abstract
Epilobium angustifolium L. (EA) has been used as a topical agent since ancient times. There has been an increasing interest in applying EA as a raw material used topically in recent years. However, in the literature, there are not many reports on the comprehensive application of this plant to skin care and treatment. EA contains many valuable secondary metabolites, which determine antioxidant, anti-inflammatory, anti-aging, and antiproliferative activity effects. One of the most important active compounds found in EA is oenothein B (OeB), which increases the level of ROS and protects cells from oxidative damage. OeB also influences wound healing and reduces inflammation by strongly inhibiting hyaluronidase enzymes and inhibiting COX-1 and COX-2 cyclooxygenases. Other compounds that play a key role in the context of application to the skin are flavonoids, which inhibit collagenase and hyaluronidase enzymes, showing anti-aging and anti-inflammatory properties. While terpenes in EA play an important role in fighting bacterial skin infections, causing, among other things cell membrane, permeability increase as well as the modification of the lipid profiles and the alteration of the adhesion of the pathogen to the animal cells. The available scientific information on the biological potential of natural compounds can be the basis for the wider use of EA in skin care and treatment. The aim of the article is to review the existing literature on the dermocosmetic use of E. angustifolium.
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Affiliation(s)
- Anna Nowak
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich Ave. 72, 70-111 Szczecin, Poland; (J.Z.-B.); (A.K.)
- Correspondence:
| | - Joanna Zielonka-Brzezicka
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich Ave. 72, 70-111 Szczecin, Poland; (J.Z.-B.); (A.K.)
| | - Magdalena Perużyńska
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich Ave. 72, 70-111 Szczecin, Poland;
| | - Adam Klimowicz
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich Ave. 72, 70-111 Szczecin, Poland; (J.Z.-B.); (A.K.)
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13
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Anti sickling potential and chemical profiling of traditionally used Woodfordia fruticosa (L.) Kurz leaves. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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14
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Oenothein B in Eucalyptus Leaf Extract Suppresses Fructose Absorption in Caco-2 Cells. Molecules 2021; 27:molecules27010122. [PMID: 35011353 PMCID: PMC8746427 DOI: 10.3390/molecules27010122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/10/2021] [Accepted: 12/22/2021] [Indexed: 11/17/2022] Open
Abstract
Inhibition of fructose absorption may suppress adiposity and adiposity-related diseases caused by fructose ingestion. Eucalyptus leaf extract (ELE) inhibits intestinal fructose absorption (but not glucose absorption); however, its active compound has not yet been identified. Therefore, we evaluated the inhibitory activity of ELE obtained from Eucalyptus globulus using an intestinal fructose permeation assay with the human intestinal epithelial cell line Caco-2. The luminal sides of a cell monolayer model cultured on membrane filters were exposed to fructose with or without the ELE. Cellular fructose permeation was evaluated by measuring the fructose concentration in the medium on the basolateral side. ELE inhibited 65% of fructose absorption at a final concentration of 1 mg/mL. Oenothein B isolated from the ELE strongly inhibited fructose absorption; the inhibition rate was 63% at a final concentration of 5 μg/mL. Oenothein B did not affect glucose absorption. In contrast, the other major constituents (i.e., gallic acid and ellagic acid) showed little fructose-inhibitory activity. To our knowledge, this is the first report that oenothein B in ELE strongly inhibits fructose absorption in vitro. ELE containing oenothein B can prevent and ameliorate obesity and other diseases caused by dietary fructose consumption.
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15
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Csikós E, Horváth A, Ács K, Papp N, Balázs VL, Dolenc MS, Kenda M, Kočevar Glavač N, Nagy M, Protti M, Mercolini L, Horváth G, Farkas Á. Treatment of Benign Prostatic Hyperplasia by Natural Drugs. Molecules 2021; 26:molecules26237141. [PMID: 34885733 PMCID: PMC8659259 DOI: 10.3390/molecules26237141] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 12/08/2022] Open
Abstract
Benign prostatic hyperplasia (BPH) is one of the most common urinary diseases affecting men, generally after the age of 50. The prevalence of this multifactorial disease increases with age. With aging, the plasma level of testosterone decreases, as well as the testosterone/estrogen ratio, resulting in increased estrogen activity, which may facilitate the hyperplasia of the prostate cells. Another theory focuses on dihydrotestosterone (DHT) and the activity of the enzyme 5α-reductase, which converts testosterone to DHT. In older men, the activity of this enzyme increases, leading to a decreased testosterone/DHT ratio. DHT may promote prostate cell growth, resulting in hyperplasia. Some medicinal plants and their compounds act by modulating this enzyme, and have the above-mentioned targets. This review focuses on herbal drugs that are most widely used in the treatment of BPH, including pumpkin seed, willow herb, tomato, maritime pine bark, Pygeum africanum bark, rye pollen, saw palmetto fruit, and nettle root, highlighting the latest results of preclinical and clinical studies, as well as safety issues. In addition, the pharmaceutical care and other therapeutic options of BPH, including pharmacotherapy and surgical options, are discussed, summarizing and comparing the advantages and disadvantages of each therapy.
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Affiliation(s)
- Eszter Csikós
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (K.Á.); (N.P.); (V.L.B.); (G.H.)
| | - Adrienn Horváth
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary;
| | - Kamilla Ács
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (K.Á.); (N.P.); (V.L.B.); (G.H.)
| | - Nóra Papp
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (K.Á.); (N.P.); (V.L.B.); (G.H.)
| | - Viktória Lilla Balázs
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (K.Á.); (N.P.); (V.L.B.); (G.H.)
| | - Marija Sollner Dolenc
- University of Ljubljana, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, SI-1000 Ljubljana, Slovenia; (M.S.D.); (M.K.)
| | - Maša Kenda
- University of Ljubljana, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, SI-1000 Ljubljana, Slovenia; (M.S.D.); (M.K.)
| | - Nina Kočevar Glavač
- University of Ljubljana, Department of Pharmaceutical Biology, Faculty of Pharmacy, SI-1000 Ljubljana, Slovenia;
| | - Milan Nagy
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, SK-832-32 Bratislava, Slovakia;
| | - Michele Protti
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (M.P.); (L.M.)
| | - Laura Mercolini
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (M.P.); (L.M.)
| | - Györgyi Horváth
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (K.Á.); (N.P.); (V.L.B.); (G.H.)
| | - Ágnes Farkas
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (K.Á.); (N.P.); (V.L.B.); (G.H.)
- Correspondence:
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16
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Shedding Light into the Connection between Chemical Components and Biological Effects of Extracts from Epilobium hirsutum: Is It a Potent Source of Bioactive Agents from Natural Treasure? Antioxidants (Basel) 2021; 10:antiox10091389. [PMID: 34573021 PMCID: PMC8468522 DOI: 10.3390/antiox10091389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/21/2021] [Accepted: 08/27/2021] [Indexed: 12/17/2022] Open
Abstract
Epilobium hirsutum is extensively used as a traditional remedy in folk medicine, especially against prostate inflammation. Therefore, we evaluated the chemical profiles and biopharmaceutical potentials of different extracts of E. hirsutum aerial parts and roots. Metabolomic, antioxidant, and enzyme inhibitory profiles were investigated. Human prostate cancer PC3 cells were exposed to the extracts to evaluate antiproliferative effects. Gene expression and bioinformatics analyses were performed to investigate anti-inflammatory mechanisms. Oenothein B and myricetin were prominent compounds in the extracts. In scavenging/reducing assays, the methanol, infusion, and methanol/water extracts exhibited similar activities. We also observed the reduction of PC3 viability occurring following exposure to methanol and methanol/water extracts. According to bioinformatics analysis, myricetin was predicted to interact with COX-2 and TNFα. The interaction between TNFα and oxo-dihydroxy-octadecenoic acid was predicted as well. Intriguingly, the gene expression of COX-2 and TNFα was reduced in PC3 cells after exposure to methanol and methanol/water extracts. These effects were paralleled by the decreased gene expression of IL-8 and NFkB and the inhibition of PGE2 release. Therefore, the present findings suggest the potential use of E. hirsutum for the management of the burden of inflammation and oxidative stress occurring in lower urinary tract diseases, including prostatitis.
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17
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Kavaz Yüksel A, Dikici E, Yüksel M, Işık M, Tozoğlu F, Köksal E. Phytochemical, phenolic profile, antioxidant, anticholinergic and antibacterial properties of Epilobium angustifolium (Onagraceae). JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-01050-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Yoshikawa S, Chen LG, Yoshimura M, Amakura Y, Hatano T, Taniguchi S. Barricyclin D1-a dimeric ellagitannin with a macrocyclic structure-and accompanying tannins from Barringtonia racemosa. Biosci Biotechnol Biochem 2021; 85:1609-1620. [PMID: 33890626 DOI: 10.1093/bbb/zbab073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/15/2021] [Indexed: 11/14/2022]
Abstract
Our examination of high molecular weight polyphenolic constituents in the leaves of Barringtonia racemosa of the family Lecythidaceae uncovered 5 previously undescribed ellagitannins. One, barringtin M1 (1), among them was a hydrolysable tannin monomer, while remaining 4, barringtins D1 (2), D2 (3), D3 (4), and barricyclin D1 (5), were all dimers. Barricyclin D1 had a first macrocyclic structure formed from casuarictin (6) and tellimagrandin I (7), and the other ellagitannins had structures related to 5. Two additional known phenolics, valoneic acid dilactone (8) and schimawalin A (9), were also isolated from the leaves. These results suggested that the leaves of B. racemosa are a natural resource rich in hydrolysable tannin oligomers.
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Affiliation(s)
- Shinji Yoshikawa
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Tsushima-naka, Kita-ku, Okayama, Japan
| | - Lih-Geeng Chen
- Department of Microbiology, Immunology and Biopharmaceuticals, National Chiayi University, Xinying, Taiwan
| | - Morio Yoshimura
- College of Pharmaceutical Sciences, Matsuyama University, Bunkyo-cho, Matsuyama, Japan
| | - Yoshiaki Amakura
- College of Pharmaceutical Sciences, Matsuyama University, Bunkyo-cho, Matsuyama, Japan
| | - Tsutomu Hatano
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Tsushima-naka, Kita-ku, Okayama, Japan
| | - Shoko Taniguchi
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Tsushima-naka, Kita-ku, Okayama, Japan
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19
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Teodor ED, Ungureanu O, Gatea F, Radu GL. The Potential of Flavonoids and Tannins from Medicinal Plants as Anticancer Agents. Anticancer Agents Med Chem 2021; 20:2216-2227. [PMID: 32416704 DOI: 10.2174/1871520620666200516150829] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/08/2020] [Accepted: 04/13/2020] [Indexed: 01/22/2023]
Abstract
The tendency of using herbs extracts or natural compounds extracted from herbs for preventing or treating different illnesses, including cancer, continues to be an alternative to drug use. Many studies of plant compounds aimed at finding substances with selective cytotoxicity on abnormal cells. Phenolic compounds, as important secondary metabolites from plants, are one of them. In this review, the recent literature data from the past five years about anticancer/antitumor effect of flavonoids and tannins extracted from medicinal plants are surveyed. The cytostatic/antitumor effects of the individual compounds extracted from plants and/or of the plants' polyphenolic extracts are considered, in order to point out the most significant constituents or plants with anticancer potential. The most important results concerning these compounds and their derivatives in cancer prevention and treatment, the importance of their chemical structure, their mechanism of action in vitro and in vivo, and some bioavailability aspects are discussed.
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Affiliation(s)
- Eugenia D Teodor
- Centre of Bioanalysis, National Institute of Biological Sciences, Bucharest, Romania
| | - Oana Ungureanu
- Centre of Bioanalysis, National Institute of Biological Sciences, Bucharest, Romania
| | - Florentina Gatea
- Centre of Bioanalysis, National Institute of Biological Sciences, Bucharest, Romania
| | - Gabriel L Radu
- Faculty of Applied Chemistry and Materials Science, University Politehnica, Bucharest, Romania
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20
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Okuyama S, Furukawa Y, Yoshimura M, Amakura Y, Nakajima M, Yoshida T. Oenothein B, a Bioactive Ellagitannin, Activates the Extracellular Signal-Regulated Kinase 2 Signaling Pathway in the Mouse Brain. PLANTS 2021; 10:plants10051030. [PMID: 34065522 PMCID: PMC8161343 DOI: 10.3390/plants10051030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/01/2021] [Accepted: 05/17/2021] [Indexed: 12/04/2022]
Abstract
(1) Background: Oenothein B, a cyclic dimeric ellagitannin present in various medicinal plants, has been reported to exert diverse effects that are beneficial for the treatment and prevention of diseases, including cancer and infections. We recently showed that oenothein B also functions in the brain because its oral administration to systemic inflammatory model mice reduced inflammatory responses in the brain and suppressed abnormal behavior. (2) Results: The present in vivo results demonstrated that oenothein B activated extracellular signal-regulated kinase 2 and cAMP response element-binding protein in the brain, both of which play important roles in synaptic transmission and learning/memory in the central nervous system (CNS). (3) Conclusions: These results suggest that oenothein B exerts neuroprotective effects on the CNS by not only its anti-inflammatory activity but also by enhancing neuronal signaling pathways.
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Affiliation(s)
- Satoshi Okuyama
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama 790-8578, Ehime, Japan; (S.O.); (M.N.)
| | - Yoshiko Furukawa
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama 790-8578, Ehime, Japan; (S.O.); (M.N.)
- Correspondence: ; Tel.: +89-925-7111; Fax: +89-926-7162
| | - Morio Yoshimura
- Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama 790-8578, Ehime, Japan; (M.Y.); (Y.A.); (T.Y.)
| | - Yoshiaki Amakura
- Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama 790-8578, Ehime, Japan; (M.Y.); (Y.A.); (T.Y.)
| | - Mitsunari Nakajima
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama 790-8578, Ehime, Japan; (S.O.); (M.N.)
| | - Takashi Yoshida
- Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama 790-8578, Ehime, Japan; (M.Y.); (Y.A.); (T.Y.)
- Department of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
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21
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Weber F, Sagstuen E, Zhong QZ, Zheng T, Tiainen H. Tannic Acid Radicals in the Presence of Alkali Metal Salts and Their Impact on the Formation of Silicate-Phenolic Networks. ACS APPLIED MATERIALS & INTERFACES 2020; 12:52457-52466. [PMID: 33180456 PMCID: PMC7735676 DOI: 10.1021/acsami.0c16946] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
Polyphenolic molecules have become attractive building blocks for bioinspired materials due to their adhesive characteristics, capacity to complex ions, redox chemistry, and biocompatibility. For the formation of tannic acid (TA) surface modifications based on silicate-phenolic networks, a high ionic strength is required. In this study, we investigated the effects of NaCl, KCl, and LiCl on the formation of TA coatings and compared it to the coating formation of pyrogallol (PG) using a quartz-crystal microbalance. We found that the substitution of NaCl with KCl inhibited the TA coating formation through the high affinity of K+ to phenolic groups resulting in complexation of TA. Assessment of the radical formation of TA by electron paramagnetic resonance spectroscopy showed that LiCl resulted in hydrolysis of TA forming gallic acid radicals. Further, we found evidence for interactions of LiCl with the Siaq crosslinker. In contrast, the coating formation of PG was only little affected by the substitution of NaCl with LiCl or KCl. Our results demonstrate the interaction potential between alkali metal salts and phenolic compounds and highlight their importance in the continuous deposition of silicate-phenolic networks. These findings can be taken as guidance for future biomedical applications of silicate-phenolic networks involving monovalent ions.
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Affiliation(s)
- Florian Weber
- Department
of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Oslo 0317, Norway
| | - Einar Sagstuen
- Department
of Physics, University of Oslo, Oslo 0317, Norway
| | - Qi-Zhi Zhong
- Centre
of Excellence in Convergent Bio-Nano Science and Technology, Department
of Chemical Engineering, The University
of Melbourne, Melbourne 3010, Australia
| | - Tian Zheng
- Materials
Characterisation and Fabrication Platform, Department of Chemical
Engineering, The University of Melbourne, Melbourne 3010, Australia
| | - Hanna Tiainen
- Department
of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Oslo 0317, Norway
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22
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Pharmacological properties of fireweed (Epilobium angustifolium L.) and bioavailability of ellagitannins. A review. HERBA POLONICA 2020. [DOI: 10.2478/hepo-2020-0001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Summary
Fireweed (Epilobium angustifolium L.) is a well-known medicinal plant traditionally used in the treatment of urogenital diseases, stomach and liver disorders, skin problems, etc. E. angustifolium extracts show anti-androgenic, antiproliferative, cytotoxic, antioxidant, anti-inflammatory, immunomodulatory, and antimicrobial activities. The unique combination of biological properties demonstrated by the results of some studies indicates that fireweed has a positive effect in benign prostatic hyperplasia (BPH) and potentially in the prostate cancer chemoprevention. However, the efficacy of E. angustifolium phytotherapy is still poorly tested in clinical trials, while numerous beneficial effects of extracts have been documented in the in vitro and in vivo tests. Fireweed is rich in polyphenolic compounds, particularly ellagitannins. Currently, polyphenols are considered to be modulators of beneficial gut microbiota. The literature data support the use of ellagitannins in the prostate cancer chemoprevention, but caution is advised due to the highly variable production of urolithins by the individual microbiota. A better understanding of the microbiota’s role and the mechanisms of its action are crucial for an optimal therapeutic effect. This paper aims to summarize and discuss experimental data concerning pharmacological properties of E. angustifolium and bioavailability of ellagitannins – important bioactive compounds of this plant.
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23
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Fireweed (Epilobium angustifolium L.): botany, phytochemistry and traditional uses. A review. HERBA POLONICA 2019. [DOI: 10.2478/hepo-2019-0018] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Summary
Fireweed (Epilobium angustifolium L., Onagraceae) is one of important medicinal plants used especially in the treatment of urogenital disorders, including benign prostatic hyperplasia (BPH) and prostatitis. The therapeutic effects of E. angustifolium extracts comprise antiproliferative, anti-inflammatory, immunomodulatory, antioxidant, and also antimicrobial activities. The aim of the present review was to provide the information on the botany, phytochemistry and traditional uses of E. angustifolium. This plant is a widespread circumboreal species of North America and Eurasia, tolerant in terms of habitat conditions, and often occupying man-made open habitats. Phytochemical studies on E. angustifolium resulted in the identification of about 250 different metabolites, including about 170 substances found for the first time in this plant in the last six years (2014–2019). Fireweed has an abundance of polyphenolic compounds, particularly ellagitannins. Oenothein B and quercetin-3-O-glucuronide are proposed as markers for the identification and standardization of the plant raw material. E. angustifolium exhibits significant phytochemical variability in relation to the geographical origin, plant part and time of harvest/vegetation phase. Survey of the ethnobotanical literature showed that the above-mentioned species has been widely used not only as a medicinal, but also as an edible, honey and decorative plant.
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24
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Ehlert J, Kronemann J, Zumbrägel N, Preller M. Lipase-Catalyzed Chemoselective Ester Hydrolysis of Biomimetically Coupled Aryls for the Synthesis of Unsymmetric Biphenyl Esters. Molecules 2019; 24:molecules24234272. [PMID: 31771200 PMCID: PMC6930668 DOI: 10.3390/molecules24234272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/17/2019] [Accepted: 11/21/2019] [Indexed: 11/21/2022] Open
Abstract
Lipases are among the most frequently used biocatalysts in organic synthesis, allowing numerous environmentally friendly and inexpensive chemical transformations. Here, we present a biomimetic strategy based on iron(III)-catalyzed oxidative coupling and selective ester monohydrolysis using lipases for the synthesis of unsymmetric biphenyl-based esters under mild conditions. The diverse class of biphenyl esters is of pharmaceutical and technical relevance. We explored the potency of a series of nine different lipases of bacterial, fungal, and mammalian origin on their catalytic activities to cleave biphenyl esters, and optimized the reaction conditions, in terms of reaction time, temperature, pH, organic solvent, and water–organic solvent ratios, to improve the chemoselectivity, and hence control the ratio of unsymmetric versus symmetric products. Elevated temperature and increased DMSO content led to an almost exclusive monohydrolysis by the four lipases Candida rugosa lipase (CRL), Mucor miehei lipase (MML), Rhizopus niveus lipase (RNL), and Pseudomonas fluorescens lipase (PFL). The study was complemented by in silico binding predictions to rationalize the observed differences in efficacies of the lipases to convert biphenyl esters. The optimized reaction conditions were transferred to the preparative scale with high yields, underlining the potential of the presented biomimetic approach as an alternative strategy to the commonly used transition metal-based strategies for the synthesis of diverse biphenyl esters.
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Affiliation(s)
- Janna Ehlert
- Institute for Biophysical Chemistry, Hannover Medical School, 30625 Hannover, Germany
- Centre of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, 30167 Hannover, Germany
| | - Jenny Kronemann
- Institute for Biophysical Chemistry, Hannover Medical School, 30625 Hannover, Germany
- Centre of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, 30167 Hannover, Germany
| | - Nadine Zumbrägel
- Institute for Biophysical Chemistry, Hannover Medical School, 30625 Hannover, Germany
- Centre of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, 30167 Hannover, Germany
| | - Matthias Preller
- Institute for Biophysical Chemistry, Hannover Medical School, 30625 Hannover, Germany
- Centre of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, 30167 Hannover, Germany
- Correspondence:
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25
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Wang L, Liang H, Liu Z, Zhang J, Wang Y, Xiao J, Zhao L. Investigation on the inactivation of trypsin by oenothein B: isothermal titration calorimetry and docking studies. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li Wang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food Science South China Agricultural University Guangzhou 510642 China
| | - Huijun Liang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food Science South China Agricultural University Guangzhou 510642 China
| | - Zitao Liu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food Science South China Agricultural University Guangzhou 510642 China
| | - Jingfeng Zhang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food Science South China Agricultural University Guangzhou 510642 China
| | - Yu Wang
- Guangzhou Institute for Food Inspection Guangzhou 511400 China
| | - Jian Xiao
- Guangzhou Institute for Food Inspection Guangzhou 511400 China
| | - Lichao Zhao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food Science South China Agricultural University Guangzhou 510642 China
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Orabi MAA, Orabi EA, Taniguchi S, Sakagami H, Yoshimura M, Amakura Y, Hatano T. Structures, NMR Spectroscopic Features, and Cytotoxic Properties of Oligomeric Hellinoyl ( m-GO- m-GOG)-Type Ellagitannins from the Galls of Tamarix aphylla. JOURNAL OF NATURAL PRODUCTS 2019; 82:2682-2695. [PMID: 31532650 DOI: 10.1021/acs.jnatprod.9b00073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ellagitannin oligomers are large molecules habitually showing complex NMR spectra that are sometimes misinterpreted and lead to incorrect structures. Understanding the NMR spectroscopic features of a group of ellagitannins would overcome these inadequacies. In this study, investigation of the galls of Tamarix aphylla led to the isolation of three new ellagitannin oligomers, phyllagallins T1 (1), T2 (2), and Q1 (3), a known monomer nilotinin M4 (4), four known dimers, nilotinins D7 (5) and D8 (6), hirtellin B (7), and tamarixinin A (8), and a simple phenolic, dehydrotrigallic acid (9). 1D and 2D NMR, HRESI-TOFMS, and ECD experiments show that compounds 1-8 are hellinoyl-type ellagitannins. The NMR spectroscopic features of this type of ellagitannins and the reasons for the abnormal upfield shifts of glucose anomeric proton and hellinoyl moiety proton signals are established considering the experimental results as well as quantum chemical calculation on a simple hellinoyl-type monomer, phyllagallin M2. Based on these results, the NMR assignments reported previously by a different research group for bracteatinin T1 and hirtellin T3 are revised. A cytotoxicity study against human oral squamous cell carcinoma cell lines (Ca9-22, HSC-2, and HSC-4) and human mesenchymal normal oral cells (HGF, HPC, and HPLF) showed cytotoxic effects with tumor-specificity higher than 5.2, 3.0, 1.6, and 2.0 for compounds 5, 2, 9, and 3, respectively.
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Affiliation(s)
- Mohamed A A Orabi
- Faculty of Pharmacy , Al-Azhar University , Assiut 71524 , Egypt
- College of Pharmacy , Najran University , Najran 55461 , Kingdom of Saudi Arabia
| | - Esam A Orabi
- Department of Chemistry , University of Manitoba , Winnipeg , Manitoba R3T 2N2 , Canada
- Department of Chemistry, Faculty of Science , Assiut University , Assiut 71516 , Egypt
| | - Shoko Taniguchi
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama University , Tsushima , Okayama 700-8530 , Japan
| | - Hiroshi Sakagami
- Meikai University Research Institute of Odontology (M-RIO) , Meikai University School of Dentistry , 1-1 Keyakidai , Sakado-shi , Saitama 350-0283 , Japan
| | - Morio Yoshimura
- College of Pharmaceutical Sciences , Matsuyama University , Bunkyo-cho , Matsuyama 790-8578 , Japan
| | - Yoshiaki Amakura
- College of Pharmaceutical Sciences , Matsuyama University , Bunkyo-cho , Matsuyama 790-8578 , Japan
| | - Tsutomu Hatano
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama University , Tsushima , Okayama 700-8530 , Japan
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Franco A, Tocci N, Guella G, Dell’Agli M, Sangiovanni E, Perenzoni D, Vrhovsek U, Mattivi F, Manca G. Myrtle Seeds ( Myrtus communis L.) as a Rich Source of the Bioactive Ellagitannins Oenothein B and Eugeniflorin D 2. ACS OMEGA 2019; 4:15966-15974. [PMID: 31592467 PMCID: PMC6776983 DOI: 10.1021/acsomega.9b02010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Abstract
The increasing popularity of "Mirto" liqueur, produced from Myrtus communis berries, has led to the planting of domesticated cultivars, expanding myrtle berry production. To promote the use of cultivated berries, the content in the nutraceutical compounds ellagitannins has been investigated both in spontaneous and cultivated fruits. Oenothein B and eugeniflorin D2, characterized by 1H and 13C NMR, were isolated and quantified using ultrahigh-performance liquid chromatography-diode array detector-tandem mass spectrometry (UPLC-DAD-MS/MS). The antifungal and anti-inflammatory activities of oenothein B were assayed in vitro. Large amounts of oenothein B and eugeniflorin D2 were detected in seeds (12 ± 2.4 and 5.8 ± 1.2 mg/g). The oenothein B concentration in liqueurs was 194 ± 22 mg/L. This macrocyclic ellagitannin dimer showed anti-Candida (minimal inhibitory concentration <8-64 μg/mL) and anti-inflammatory properties. Cultivated myrtle berries are a source of nutraceutical compounds. The high concentration of oenothein B in liqueur suggests a possible contribution to the organoleptic and biological properties of the beverage.
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Affiliation(s)
- Andrea
M. Franco
- Department
of Economics and Business (DiSea), Laboratory of Commodity Science
Technology and Quality, University of Sassari, Via Muroni 25, 07100 Sassari, Italy
| | - Noemi Tocci
- Department
of Economics and Business (DiSea), Laboratory of Commodity Science
Technology and Quality, University of Sassari, Via Muroni 25, 07100 Sassari, Italy
- Centre
for Research and Innovation, Department of Food Quality and Nutrition, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all’Adige, Italy
| | - Graziano Guella
- Department
of Physics, Bioorganic Chemistry Laboratory, University of Trento, Via Sommarive 14, 38123 Povo, TN, Italy
| | - Mario Dell’Agli
- Department
of Pharmacological and Biomolecular Sciences (DiSFeB), Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Enrico Sangiovanni
- Department
of Pharmacological and Biomolecular Sciences (DiSFeB), Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Daniele Perenzoni
- Centre
for Research and Innovation, Department of Food Quality and Nutrition, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all’Adige, Italy
| | - Urska Vrhovsek
- Centre
for Research and Innovation, Department of Food Quality and Nutrition, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all’Adige, Italy
| | - Fulvio Mattivi
- Centre
for Research and Innovation, Department of Food Quality and Nutrition, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all’Adige, Italy
- Department
of Physics, Bioorganic Chemistry Laboratory, University of Trento, Via Sommarive 14, 38123 Povo, TN, Italy
| | - Gavina Manca
- Department
of Economics and Business (DiSea), Laboratory of Commodity Science
Technology and Quality, University of Sassari, Via Muroni 25, 07100 Sassari, Italy
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Nitta Y, Ito H, Komori H, Ueno H, Takeshima D, Ito M, Sakaue M, Kikuzaki H. The ellagitannin trimer rugosin G inhibits recombinant human histidine decarboxylase. Biosci Biotechnol Biochem 2019; 83:1315-1318. [PMID: 30995171 DOI: 10.1080/09168451.2019.1606695] [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: 10/27/2022]
Abstract
Rugosin G, an ellagitannin trimer, was isolated from the water-soluble fraction of red rose petals, and its inhibitory activity against recombinant human histidine decarboxylase was investigated. Rugosin G showed potent inhibition compared to ellagitannin monomers and a dimer with macrocyclic structure (oenothein B), suggesting the potent inhibition of rugosin G was attributed to its linear oligomeric conformation. Abbreviations: HDC, histidine decarboxylase; Me2CO, acetone; EtOAc, ethyl acetate.
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Affiliation(s)
- Yoko Nitta
- a Department of Nutritional Science, Faculty of Health and Welfare Science , Okayama Prefectural University , Soja-shi, Okayama , Japan
| | - Hideyuki Ito
- a Department of Nutritional Science, Faculty of Health and Welfare Science , Okayama Prefectural University , Soja-shi, Okayama , Japan
| | - Hirohumi Komori
- b Faculty of Education , Kagawa University , Takamatsu, Kagawa , Japan
| | - Hiroshi Ueno
- c Laboratory of Applied Microbiology & Biochemistry , Ryukoku University , Ohtsu, Shiga , Japan
| | - Daiki Takeshima
- a Department of Nutritional Science, Faculty of Health and Welfare Science , Okayama Prefectural University , Soja-shi, Okayama , Japan
| | - Mikiko Ito
- d Graduate School of Human Science and Environment , University of Hyogo , Himeji, Hyogo , Japan
| | - Motoyoshi Sakaue
- d Graduate School of Human Science and Environment , University of Hyogo , Himeji, Hyogo , Japan
| | - Hiroe Kikuzaki
- e Department of Food Science and Nutrition , Nara Women's University , Kitauoyanishi-machi, Nara , Japan
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Paulis G. Inflammatory mechanisms and oxidative stress in prostatitis: the possible role of antioxidant therapy. Res Rep Urol 2018; 10:75-87. [PMID: 30271757 PMCID: PMC6149977 DOI: 10.2147/rru.s170400] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This article focuses on the role that oxidative stress plays in chronic prostatitis, not only with respect to the known impact on symptoms and fertility but also especially in relation to possible prostate cancer development. Prostatitis is the most common urologic disease in adult males younger than 50 years and the third most common urologic diagnosis in males older than 50 years. If the germ-causing acute prostatitis is not eliminated, the inflammatory process becomes chronic. Persistent inflammation causes ongoing production of large quantities of pro-inflammatory cytokines and both oxygen and nitrogen reactive species, with consequent activation of transcription factor nuclear factor-kappa B (NF-κB) and genes encoding for further production of pro-inflammatory cytokines, chemotactic factors, and growth factors. Confirming the role of oxidative stress in chronic prostatitis, several studies have demonstrated the presence of oxidative stress markers in the genital secretions of patients suffering from the disease. Antioxidants can therefore play an essential role in the treatment of chronic bacterial and non-bacterial prostatitis; in the case of bacterial inflammation, they can be associated with antibiotic therapy. Moreover, due to their anti-inflammatory properties, antioxidants hinder the progression of inflammation and the possible development of prostate cancer.
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Affiliation(s)
- Gianni Paulis
- Andrology Center, Villa Benedetta Clinic, Rome, Italy,
- Department of Uro-Andrology, Castelfidardo Medical Team, Rome, Italy,
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