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Olchowik-Grabarek E, Czerkas K, Matchanov AD, Esanov RS, Matchanov UD, Zamaraeva M, Sekowski S. Antibacterial and Antihemolytic Activity of New Biomaterial Based on Glycyrrhizic Acid and Quercetin (GAQ) against Staphylococcus aureus. J Funct Biomater 2023; 14:368. [PMID: 37504863 PMCID: PMC10381813 DOI: 10.3390/jfb14070368] [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: 06/15/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 07/29/2023] Open
Abstract
The goal of this study is to obtain and characterize the complex of quercetin with glycyrrhizic acid, which is known to serve as a drug delivery system. Quercetin is a flavonoid with a wide range of biological activities, including an antimicrobial effect. However, quercetin instability and low bioavailability that limits its use in medical practice makes it necessary to look for new nanoformulations of it. The formation of the GAQ complex (2:1) was confirmed by using UV and FT-IR spectroscopies. It was found that the GAQ exhibited antimicrobial and antihemolytical activities against S. aureus bacteria and its main virulent factor-α-hemolysin. The IC50 value for the antihemolytical effect of GAQ was 1.923 ± 0.255 µg/mL. Using a fluorescence method, we also showed that the GAQ bound tightly to the toxin that appears to underlie its antihemolytic activity. In addition, another mechanism of the antihemolytic activity of the GAQ against α-hemolysin was shown, namely, its ability to increase the rigidity of the outer layer of the erythrocyte membrane and thus inhibit the incorporation of α-hemolysin into the target cells, increasing their resistance to the toxin. Both of these effects of GAQ were observed at concentrations below the MIC value for S. aureus growth, indicating the potential of the complex as an antivirulence agent.
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Affiliation(s)
- Ewa Olchowik-Grabarek
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 15-254 Bialystok, Poland
| | - Krzysztof Czerkas
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 15-254 Bialystok, Poland
| | | | - Rahmat Sulton Esanov
- Institute of Bioorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent 100143, Uzbekistan
- National University of Uzbekistan, Tashkent 700174, Uzbekistan
| | | | - Maria Zamaraeva
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 15-254 Bialystok, Poland
| | - Szymon Sekowski
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 15-254 Bialystok, Poland
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2
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Saricaoglu B, Gültekin Subaşı B, Karbancioglu-Guler F, Lorenzo JM, Capanoglu E. Phenolic compounds as natural microbial toxin detoxifying agents. Toxicon 2023; 222:106989. [PMID: 36509264 DOI: 10.1016/j.toxicon.2022.106989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022]
Abstract
Despite the abundance of promising studies, developments, and improvements about the elimination of microbial toxins from food matrices, they are still considered as one of the major food safety problems due to the lack of their complete avoidance even today. Every year, many crops and foodstuffs have to be discarded due to unconstrained contamination and/or production of microbial toxins. Furthermore, the difficulty for the detection of toxin presence and determination of its level in foods may lead to acute or chronic health problems in many individuals. On the other hand, phenolic compounds might be considered as microbial toxin detoxification agents because of their inhibition effect on the toxin synthesis of microorganisms or exhibiting protective effects against varying damaging mechanisms caused by toxins. In this study, the effect of phenolic compounds on the synthesis of bacterial toxins and mycotoxins is comprehensively reviewed. The potential curing effect of phenolic compounds against toxin-induced damages has also been discussed. Consequently, phenolic compounds are indicated as promising, and considerable natural preservatives against toxin damages and their detoxification potentials are pronounced.
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Affiliation(s)
- Beyza Saricaoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Büşra Gültekin Subaşı
- Hafik Kamer Ornek Vocational School, Sivas Cumhuriyet University, 58140, Sivas, Turkey
| | - Funda Karbancioglu-Guler
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Jose Manuel Lorenzo
- Centro Tecnológico de La Carne de Galicia, Parque Tecnológico de Galicia, Avd. Galicia nº 4, San Cibrao das Viñas, 32900 Ourense, Spain; Universidade de Vigo, Área de Tecnoloxía dos Alimentos, Facultade de Ciencias, 32004 Ourense, Spain
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
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Olchowik-Grabarek E, Mies F, Sekowski S, Dubis AT, Laurent P, Zamaraeva M, Swiecicka I, Shlyonsky V. Enzymatic synthesis and characterization of aryl iodides of some phenolic acids with enhanced antibacterial properties. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:184011. [PMID: 35872033 DOI: 10.1016/j.bbamem.2022.184011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Phenolic acids represent a class of drugs with mild antibacterial properties. We have synthesized iodinated gallic and ferulic acids and together with commercially available iodinated forms of salicylic acids studied their cytotoxicity, bacteriostatic and anti-virulence action. Out of these, iodogallic acid had lowest minimal inhibitory concentration (MIC) against Staphylococcus aureus (MIC = 0.4 mM/118.8 μg/ml). Yet, it had strong effect on erythrocyte membrane lipid ordering and on α-hemolysin secretion by the bacteria at lower non-bacteriostatic and non-cytotoxic concentrations (<0.1 mM). Iodogallic acid formed static complexes with α-hemolysin in solutions (logKb = 4.69 ± 0.07) and inhibited its nano-pore conduction in artificial lipid bilayers (IC50 = 37.9 ± 5.3 μM). These effects of iodogallic acid converged on prevention of hemolysis induced by α-hemolysin (IC50 = 41.5 ± 4.2 μM) and pointed to enhanced and diverse anti-virulence properties of some aryl iodides. The analysis of molecular surface electrostatic charge distribution, molecular hydrophilicity, electronegativity, and dipole moment of studied compounds suggested the importance of the number of hydroxyl groups and their proximity to iodine in anti-virulence activity manifestation. In iodogallic acid, charge redistribution resulted in higher hydrophilicity without concomitant change in overall molecular electronegativity and dipole moment compared to non-iodinated gallic acid. This study shows new directions for the development of antibacterial/antivirulence therapeutics.
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Affiliation(s)
- Ewa Olchowik-Grabarek
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Poland
| | - Frédérique Mies
- Laboratory of Physiology and Pharmacology, Faculty of Medicine, Université libre de Bruxelles, Belgium
| | - Szymon Sekowski
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Poland
| | - Alina T Dubis
- Department of Organic Chemistry, Faculty of Chemistry, University of Bialystok, Poland
| | - Pascal Laurent
- Laboratory of Chemistry Instruction, Faculty of Medicine, Université libre de Bruxelles, Belgium
| | - Maria Zamaraeva
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Poland
| | - Izabela Swiecicka
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Poland
| | - Vadim Shlyonsky
- Laboratory of Physiology and Pharmacology, Faculty of Medicine, Université libre de Bruxelles, Belgium.
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4
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Hanada A, Morimoto R, Horio Y, Shichiri M, Nakashima A, Ogawa T, Suzuki K, Sumitani H, Ogata T, Isegawa Y. Influenza virus entry and replication inhibited by 8-prenylnaringenin from Citrullus lanatus var. citroides (wild watermelon). Food Sci Nutr 2022; 10:926-935. [PMID: 35282012 PMCID: PMC8907720 DOI: 10.1002/fsn3.2725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/11/2021] [Accepted: 12/22/2021] [Indexed: 12/05/2022] Open
Abstract
We previously demonstrated the anti-influenza activity of Citrullus lanatus var. citroides (wild watermelon, WWM); however, the active ingredient was unknown. Here, we performed metabolomic analysis to evaluate the ingredients of WWM associated with antiviral activity. Many low-molecular weight compounds were identified, with flavonoids accounting for 35% of all the compounds in WWM juice. Prenylated flavonoids accounted for 30% of the flavonoids. Among the measurable components of phytoestrogens in WWM juice, 8-prenylnaringenin showed the highest antiviral activity. We synthesized 8-prenylnaringenin and used liquid chromatography-mass spectrometry to quantitate the active ingredient in WWM. The antiviral activities of 8-prenylnaringenin were observed against H1N1 and H3N2 influenza A subtypes and influenza B viruses. Moreover, 8-prenylnaringenin was found to inhibit virus adsorption and late-stage virus replication, suggesting that the mechanisms of action of 8-prenylnaringenin may differ from those of amantadine and oseltamivir. We confirmed that 8-prenylnaringenin strongly inhibited the viral entry of all the influenza virus strains that were examined, including those resistant to the anti-influenza drugs oseltamivir and amantadine. This result indicates that 8-prenylnaringenin may activate the host cell's defense mechanisms, rather than directly acting on the influenza virus. Since 8-prenylnaringenin did not inhibit late-stage virus replication of oseltamivir-resistant strains, 8-prenylnaringenin may interact directly with viral neuraminidase. These results are the first report on the anti-influenza virus activity of 8-prenylnaringenin. Our results highlight the potential of WWM and phytoestrogens to develop effective prophylactic and therapeutic approaches to the influenza virus.
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Affiliation(s)
- Akari Hanada
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
| | - Ryosuke Morimoto
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
- Present address:
Faculty of Human Life ScienceShikoku UniversityTokushimaJapan
| | - Yuka Horio
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
| | - Mototada Shichiri
- Biomedical Research InstituteNational Institute of Advanced Industrial Science and Technology (AIST)IkedaJapan
| | | | | | | | | | - Tokutaro Ogata
- Faculty of Health and Medical SciencesHokuriku UniversityKanazawaJapan
| | - Yuji Isegawa
- Department of Food Sciences and NutritionMukogawa Women’s UniversityNishinomiyaJapan
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5
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Sousa FBM, Nolêto IRSG, Chaves LS, Pacheco G, Oliveira AP, Fonseca MMV, Medeiros JVR. A comprehensive review of therapeutic approaches available for the treatment of cholera. J Pharm Pharmacol 2020; 72:1715-1731. [DOI: 10.1111/jphp.13344] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/04/2020] [Indexed: 12/15/2022]
Abstract
Abstract
Objectives
The oral rehydration solution is the most efficient method to treat cholera; however, it does not interfere in the action mechanism of the main virulence factor produced by Vibrio cholerae, the cholera toxin (CT), and this disease still stands out as a problem for human health worldwide. This review aimed to describe therapeutic alternatives available in the literature, especially those related to the search for molecules acting upon the physiopathology of cholera.
Key findings
New molecules have offered a protection effect against diarrhoea induced by CT or even by infection from V. cholerae. The receptor regulator cystic fibrosis channel transmembrane (CFTR), monosialoganglioside (GM1), enkephalinase, AMP-activated protein kinase (AMPK), inhibitors of expression of virulence factors and activators of ADP-ribosylarginine hydrolase are the main therapeutic targets studied. Many of these molecules or extracts still present unclear action mechanisms.
Conclusions
Knowing therapeutic alternatives and their molecular mechanisms for the treatment of cholera could guide us to develop a new drug that could be used in combination with the rehydration solution.
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Affiliation(s)
- Francisca B M Sousa
- Laboratory of Pharmacology of Inflammation and Gastrointestinal Disorders (Lafidg), Post-graduation Program in Biotechnology, Federal University of Parnaíba Delta, Parnaíba, Brazil
- Northeast Biotechnology Network (RENORBIO), Federal University of Piauí, Teresina, Brazil
| | - Isabela R S G Nolêto
- Laboratory of Pharmacology of Inflammation and Gastrointestinal Disorders (Lafidg), Post-graduation Program in Biotechnology, Federal University of Parnaíba Delta, Parnaíba, Brazil
- Northeast Biotechnology Network (RENORBIO), Federal University of Piauí, Teresina, Brazil
| | - Leticia S Chaves
- Laboratory of Pharmacology of Inflammation and Gastrointestinal Disorders (Lafidg), Post-graduation Program in Biotechnology, Federal University of Parnaíba Delta, Parnaíba, Brazil
- Post-graduation Program in Biomedical Sciences, Federal University of Piauí, Parnaíba, Brazil
| | - Gabriella Pacheco
- Laboratory of Pharmacology of Inflammation and Gastrointestinal Disorders (Lafidg), Post-graduation Program in Biotechnology, Federal University of Parnaíba Delta, Parnaíba, Brazil
| | - Ana P Oliveira
- Laboratory of Pharmacology of Inflammation and Gastrointestinal Disorders (Lafidg), Post-graduation Program in Biotechnology, Federal University of Parnaíba Delta, Parnaíba, Brazil
- Northeast Biotechnology Network (RENORBIO), Federal University of Piauí, Teresina, Brazil
| | - Mikhail M V Fonseca
- Institute of Higher Education of Vale do Parnaíba (IESVAP), Parnaíba, Brazil
| | - Jand V R Medeiros
- Laboratory of Pharmacology of Inflammation and Gastrointestinal Disorders (Lafidg), Post-graduation Program in Biotechnology, Federal University of Parnaíba Delta, Parnaíba, Brazil
- Northeast Biotechnology Network (RENORBIO), Federal University of Piauí, Teresina, Brazil
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6
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Inhibition of interaction between Staphylococcus aureus α-hemolysin and erythrocytes membrane by hydrolysable tannins: structure-related activity study. Sci Rep 2020; 10:11168. [PMID: 32636484 PMCID: PMC7341856 DOI: 10.1038/s41598-020-68030-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/11/2020] [Indexed: 01/17/2023] Open
Abstract
The objective of the study was a comparative analysis of the antihemolytic activity against two Staphylococcus aureus strains (8325-4 and NCTC 5655) as well as α-hemolysin and of the membrane modifying action of four hydrolysable tannins with different molecular mass and flexibility: 3,6-bis-O-di-O-galloyl-1,2,4-tri-O-galloyl-β-d-glucose (T1), 1,2,3,4,5-penta-O-galloyl-β-d-glucose (T2), 3-O-galloyl-1,2-valoneoyl-β-d-glucose (T3) and 1,2-di-O-galloyl-4,6-valoneoyl-β-d-glucose (T4). We showed that all the compounds studied manifested antihemolytic effects in the range of 5–50 µM concentrations. However, the degree of the reduction of hemolysis by the investigated tannins was not uniform. A valoneoyl group—containing compounds (T3 and T4) were less active. Inhibition of the hemolysis induced by α-hemolysin was also noticed on preincubated with the tannins and subsequently washed erythrocytes. In this case the efficiency again depended on the tannin structure and could be represented by the following order: T1 > T2 > T4 > T3. We also found a relationship between the degree of antihemolytic activity of the tannins studied and their capacity to increase the ordering parameter of the erythrocyte membrane outer layer and to change zeta potential. Overall, our study showed a potential of the T1 and T2 tannins as anti-virulence agents. The results of this study using tannins with different combinations of molecular mass and flexibility shed additional light on the role of tannin structure in activity manifestation.
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7
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Komiazyk M, Palczewska M, Sitkiewicz I, Pikula S, Groves P. Neutralization of cholera toxin by Rosaceae family plant extracts. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:140. [PMID: 31221152 PMCID: PMC6587261 DOI: 10.1186/s12906-019-2540-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 06/03/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND Cholera is one of the most deadly diarrheal diseases that require new treatments. We investigated the neutralization of cholera toxin by five plant extracts obtained from the Rosaceae family that have been traditionally used in Poland to treat diarrhea (of unknown origin). METHODS Hot water extracts were prepared from the dried plant materials and lyophilized before phytochemical analysis and assessment of antimicrobial activity using microdilution assays. The ability of the plant extracts to neutralize cholera toxin was analyzed by measurement of cAMP levels in cell cultures, enzyme-linked immunosorbent assay and electrophoresis, as well as flow cytometry and fluorescence microscopy studies of fluorescent-labeled cholera toxins with cultured human fibroblasts. RESULTS The antimicrobial assays displayed modest bacteriostatic potentials. We found that the plant extracts modulate the effects of cholera toxin on intracellular cAMP levels. Three plant extracts (Agrimonia eupatoria L., Rubus fruticosus L., Fragaria vesca L.) suppressed the binding of subunit B of cholera toxin to the cell surface and immobilized ganglioside GM1 while two others (Rubus idaeus L., Rosa.canina L.) interfered with the toxin internalization process. CONCLUSIONS The traditional application of the Rosaceae plant infusions for diarrhea appears relevant to cholera, slowing the growth of pathogenic bacteria and either inhibiting the binding of cholera toxin to receptors or blocking toxin internalization. The analyzed plant extracts are potential complements to standard antibiotic treatment and Oral Rehydration Therapy for the treatment of cholera.
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Affiliation(s)
- Magdalena Komiazyk
- Laboratory of Biochemistry of Lipids, Nencki Institute of Experimental Biology, 3 Pasteur Street, 02-093, Warsaw, Poland
- Laboratory of Molecular Interactions and NMR, Instituto de Tecnologia Química e Biológica, Av. da República, 2780-157, Oeiras, Portugal
| | - Malgorzata Palczewska
- Laboratory of Molecular Interactions and NMR, Instituto de Tecnologia Química e Biológica, Av. da República, 2780-157, Oeiras, Portugal
- Department of Molecular Biotechnology, Chemistry Faculty, University of Gdansk, 63 Wita Stwosza Street, 80-308, Gdańsk, Poland
| | - Izabela Sitkiewicz
- Department of Drug Biotechnology and Bioinformatics, National Medicines Institute, 30/34 Chełmska Street, 00-725, Warsaw, Poland
| | - Slawomir Pikula
- Laboratory of Biochemistry of Lipids, Nencki Institute of Experimental Biology, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Patrick Groves
- Laboratory of Molecular Interactions and NMR, Instituto de Tecnologia Química e Biológica, Av. da República, 2780-157, Oeiras, Portugal.
- Department of Biomedicinal Chemistry, Chemistry Faculty, University of Gdansk, ul. 63 Wita Stwosza Street, 80-308, Gdańsk, Poland.
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Adrar NS, Madani K, Adrar S. Impact of the inhibition of proteins activities and the chemical aspect of polyphenols-proteins interactions. PHARMANUTRITION 2019. [DOI: 10.1016/j.phanu.2019.100142] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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9
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Vestergaard M, Ingmer H. Antibacterial and antifungal properties of resveratrol. Int J Antimicrob Agents 2019; 53:716-723. [PMID: 30825504 DOI: 10.1016/j.ijantimicag.2019.02.015] [Citation(s) in RCA: 273] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 02/13/2019] [Accepted: 02/16/2019] [Indexed: 12/30/2022]
Abstract
Resveratrol is a naturally occurring polyphenolic antioxidant that has received massive attention for its potential health benefits, including anticarcinogenesis, anti-aging and antimicrobial properties. The compound is well tolerated by humans and in recent years has been widely used as a nutraceutical. Its common use makes it interesting to investigate with respect to antimicrobial properties both as a single agent and in combination with conventional antibiotics. Resveratrol displays antimicrobial activity against a surprisingly wide range of bacterial, viral and fungal species. At subinhibitory concentrations, resveratrol can alter bacterial expression of virulence traits leading to reduced toxin production, inhibition of biofilm formation, reduced motility and interference with quorum sensing. In combination with conventional antibiotics, resveratrol enhances the activity of aminoglycosides against Staphylococcus aureus, whereas it antagonises the lethal activity of fluoroquinolones against S. aureus and Escherichia coli. Whilst the antimicrobial properties of the compound have been extensively studied in vitro, little is known about its efficacy in vivo. Nonetheless, following topical application resveratrol has alleviated acne lesions caused by the bacterium Propionibacterium acnes. There are currently no in vivo studies addressing its effect in combination with antibiotics, but recent research suggests that there may be a potential for enhancing the antimicrobial efficacy of certain existing antibiotic classes in combination with resveratrol. Given the difficulties associated with introducing new antimicrobial agents to the market, nutraceuticals such as resveratrol may prove to be interesting candidates when searching for solutions for the growing problem of antimicrobial resistance.
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Affiliation(s)
- Martin Vestergaard
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Stigbøjlen 4, DK-1870 Frederiksberg C, Denmark
| | - Hanne Ingmer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Stigbøjlen 4, DK-1870 Frederiksberg C, Denmark.
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10
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Effect of resveratrol and Regrapex-R-forte on Trichosporon cutaneum biofilm. Folia Microbiol (Praha) 2018; 64:73-81. [PMID: 30062620 DOI: 10.1007/s12223-018-0633-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 07/12/2018] [Indexed: 01/21/2023]
Abstract
Microorganisms that cause chronic infections exist predominantly as surface-attached stable communities known as biofilms. Microbial cells in biofilms are highly resistant to conventional antibiotics and other forms of antimicrobial treatment; therefore, modern medicine tries to develop new drugs that exhibit anti-biofilm activity. We investigated the influence of a plant polyphenolic compound resveratrol (representative of the stilbene family) on the opportunistic pathogen Trichosporon cutaneum. Besides the influence on the planktonic cells of T. cutaneum, the ability to inhibit biofilm formation and to eradicate mature biofilm was studied. We have tested resveratrol as pure compound, as well as resveratrol in complex plant extract-the commercially available dietary supplement Regrapex-R-forte, which contains the extract of Vitis vinifera grape and extract of Polygonum cuspidatum root. Regrapex-R-forte is rich in stilbenes and other biologically active substances. Light microscopy imaging, confocal microscopy, and crystal violet staining were used to quantify and visualize the biofilm. The metabolic activity of biofilm-forming cells was studied by the tetrazolium salt assay. Amphotericin B had higher activity against planktonic cells; however, resveratrol and Regrapex-R-forte showed anti-biofilm effects, both in inhibition of biofilm formation and in the eradication of mature biofilm. The minimum biofilm eradicating concentration (MBEC80) for Regrapex-R-forte was found to be 2222 mg/L (in which resveratrol concentration is 200 mg/L). These methods demonstrated that Regrapex-R-forte can be employed as an anti-biofilm agent, as it has similar effect as amphotericin B (MBEC80 = 700 mg/L), which is routinely used in clinical practice.
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11
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Ma DSL, Tan LTH, Chan KG, Yap WH, Pusparajah P, Chuah LH, Ming LC, Khan TM, Lee LH, Goh BH. Resveratrol-Potential Antibacterial Agent against Foodborne Pathogens. Front Pharmacol 2018. [PMID: 29515440 PMCID: PMC5826062 DOI: 10.3389/fphar.2018.00102] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Bacterial foodborne pathogens are a significant health burden and the recent emergence of pathogenic resistant strains due to the excessive use of antibiotics makes it more difficult to effectively treat infections as a result of contaminated food. Awareness of this impending health crisis has spurred the search for alternative antimicrobials with natural plant antimicrobials being among the more promising candidates as these substances have good acceptability and likely low toxicity levels as they have long been used in traditional medicines. Resveratrol (3,5,4′-trihydroxystilbene) is a naturally occurring stilbenoid which has been gaining considerable attention in medical field due to its diverse biological activities - it has been reported to exhibit antioxidant, cardioprotective, anti-diabetic, anticancer, and antiaging properties. Given that resveratrol is phytoalexin, with increased synthesis in response to infection by phytopathogens, there has been interest in exploring its antimicrobial activity. This review aims to provide an overview of the published data on the antibacterial activity of resveratrol against foodborne pathogens, its mechanisms of action as well as its possible applications in food packing and processing; in addition we also summarize the current data on its potential synergism with known antibacterials and future research and applications.
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Affiliation(s)
- Dexter S L Ma
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Loh Teng-Hern Tan
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biomedical Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
| | - Kok-Gan Chan
- International Genome Centre, Jiangsu University, Zhenjiang, China.,Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Wei Hsum Yap
- School of Biosciences, Taylor's University, Subang Jaya, Malaysia
| | - Priyia Pusparajah
- Biomedical Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
| | - Lay-Hong Chuah
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Advanced Engineering Platform, Monash University Malaysia, Subang Jaya, Malaysia
| | - Long Chiau Ming
- Division of Pharmacy, School of Medicine, University of Tasmania, Hobart, Australia.,School of Pharmacy, KPJ Healthcare University College, Nilai, Malaysia
| | - Tahir Mehmood Khan
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Subang Jaya, Malaysia.,The Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Learn-Han Lee
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Subang Jaya, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Subang Jaya, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
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12
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Barbieri R, Coppo E, Marchese A, Daglia M, Sobarzo-Sánchez E, Nabavi SF, Nabavi SM. Phytochemicals for human disease: An update on plant-derived compounds antibacterial activity. Microbiol Res 2016; 196:44-68. [PMID: 28164790 DOI: 10.1016/j.micres.2016.12.003] [Citation(s) in RCA: 336] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 12/11/2022]
Abstract
In recent years, many studies have shown that phytochemicals exert their antibacterial activity through different mechanisms of action, such as damage to the bacterial membrane and suppression of virulence factors, including inhibition of the activity of enzymes and toxins, and bacterial biofilm formation. In this review, we summarise data from the available literature regarding the antibacterial effects of the main phytochemicals belonging to different chemical classes, alkaloids, sulfur-containing phytochemicals, terpenoids, and polyphenols. Some phytochemicals, besides having direct antimicrobial activity, showed an in vitro synergistic effect when tested in combination with conventional antibiotics, modifying antibiotic resistance. Review of the literature showed that phytochemicals represent a possible source of effective, cheap and safe antimicrobial agents, though much work must still be carried out, especially in in vivo conditions to ensure the selection of effective antimicrobial substances with low side and adverse effects.
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Affiliation(s)
| | - Erika Coppo
- Sezione di Microbiologia DISC University of Genoa, Italy
| | - Anna Marchese
- Sezione di Microbiologia DISC-IRCCS San Martino-IST University of Genoa, Italy.
| | - Maria Daglia
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Italy
| | - Eduardo Sobarzo-Sánchez
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain; Dirección de Investigación, Universidad Central de Chile, Santiago, Chile
| | - Seyed Fazel Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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13
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Cherubin P, Garcia MC, Curtis D, Britt CBT, Craft JW, Burress H, Berndt C, Reddy S, Guyette J, Zheng T, Huo Q, Quiñones B, Briggs JM, Teter K. Inhibition of Cholera Toxin and Other AB Toxins by Polyphenolic Compounds. PLoS One 2016; 11:e0166477. [PMID: 27829022 PMCID: PMC5102367 DOI: 10.1371/journal.pone.0166477] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 10/28/2016] [Indexed: 01/09/2023] Open
Abstract
Cholera toxin (CT) is an AB-type protein toxin that contains a catalytic A1 subunit, an A2 linker, and a cell-binding B homopentamer. The CT holotoxin is released into the extracellular environment, but CTA1 attacks a target within the cytosol of a host cell. We recently reported that grape extract confers substantial resistance to CT. Here, we used a cell culture system to identify twelve individual phenolic compounds from grape extract that inhibit CT. Additional studies determined the mechanism of inhibition for a subset of the compounds: two inhibited CT binding to the cell surface and even stripped CT from the plasma membrane of a target cell; two inhibited the enzymatic activity of CTA1; and four blocked cytosolic toxin activity without directly affecting the enzymatic function of CTA1. Individual polyphenolic compounds from grape extract could also generate cellular resistance to diphtheria toxin, exotoxin A, and ricin. We have thus identified individual toxin inhibitors from grape extract and some of their mechanisms of inhibition against CT.
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Affiliation(s)
- Patrick Cherubin
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Maria Camila Garcia
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - David Curtis
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Christopher B. T. Britt
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - John W. Craft
- Department of Biology & Biochemistry, University of Houston, Houston, Texas, United States of America
| | - Helen Burress
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Chris Berndt
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Srikar Reddy
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Jessica Guyette
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Tianyu Zheng
- NanoScience Technology Center and Department of Chemistry, University of Central Florida, Orlando, Florida, United States of America
| | - Qun Huo
- NanoScience Technology Center and Department of Chemistry, University of Central Florida, Orlando, Florida, United States of America
| | - Beatriz Quiñones
- Produce Safety and Microbiology Research Unit, Western Regional Research Center, United States Department of Agriculture - Agricultural Research Service, Albany, California, United States of America
| | - James M. Briggs
- Department of Biology & Biochemistry, University of Houston, Houston, Texas, United States of America
| | - Ken Teter
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
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14
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Webb JN, Koufos E, Brown AC. Inhibition of Bacterial Toxin Activity by the Nuclear Stain, DRAQ5™. J Membr Biol 2016; 249:503-11. [PMID: 27039399 DOI: 10.1007/s00232-016-9892-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/24/2016] [Indexed: 02/03/2023]
Abstract
The repeats-in-toxin family of toxins includes proteins produced by Gram negative bacteria such as Escherichia coli (α-hemolysin), Bordetella pertussis (adenylate cyclase toxin), and Aggregatibacter actinomycetemcomitans (LtxA), which contribute to the pathogenesis of these organisms by killing host cells. In the case of LtxA produced by A. actinomycetemcomitans, white blood cells are targeted, allowing the bacteria to avoid clearance by the host immune system. In its association with target cells, LtxA binds to a receptor, lymphocyte function-associated antigen-1, as well as membrane lipids and cholesterol, before being internalized via a lysosomal-mediated pathway. The motivation for this project comes from our discovery that DRAQ5™, a membrane-permeable nuclear stain, prevents the internalization of LtxA in a Jurkat T cell line. We hypothesized that DRAQ5™, in crossing the plasma membrane, alters the properties of the membrane to inhibit LtxA internalization. To investigate how DRAQ5™ interacts with the lipid membrane to prevent LtxA internalization, we used studied DRAQ5™-mediated membrane changes in model membranes using a variety of techniques, including differential scanning calorimetry and fluorescence spectroscopy. Our results suggest that DRAQ5™ inhibits the activity of LtxA by decreasing the fluidity of the cellular lipid membrane, which decreases LtxA binding. These results present an interesting possible anti-virulence strategy; by altering bacterial toxin activity by modifying membrane fluidity, it may be possible to inhibit the pathogenicity of A. actinomycetemcomitans.
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Affiliation(s)
- Joshua N Webb
- Program in Bioengineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Evan Koufos
- Department of Chemical and Biomolecular Engineering, Lehigh University, B323 Iacocca Hall, 111 Research Drive, Bethlehem, PA, 18015, USA
| | - Angela C Brown
- Department of Chemical and Biomolecular Engineering, Lehigh University, B323 Iacocca Hall, 111 Research Drive, Bethlehem, PA, 18015, USA.
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15
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Kim HI, Kim JA, Choi EJ, Harris JB, Jeong SY, Son SJ, Kim Y, Shin OS. In vitro and in vivo antimicrobial efficacy of natural plant-derived compounds against Vibrio cholerae of O1 El Tor Inaba serotype. Biosci Biotechnol Biochem 2014; 79:475-83. [PMID: 25516242 DOI: 10.1080/09168451.2014.991685] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In this study, we investigated antibacterial activities of 20 plant-derived natural compounds against Gram-negative enteric pathogens. We found that both flavonoids and non-flavonoids, including honokiol and magnolol, possess specific antibacterial activities against V. cholerae, but not against other species of Gram-negative bacterium which we tested. Using various antibacterial assays, we determined that there was a dose-dependent bactericidal and biofilm inhibitory activity of honokiol and magnolol against Vibrio cholerae. In addition to antibacterial activities, these molecules also induced an attenuating effect on reactive oxygen species (ROS) production and pro-inflammatory responses generated by macrophages in response to lipopolysaccharides (LPS). Additionally, Caenorhabditis elegans lethality assay revealed that honokiol and magnolol have an ability to extend a lifespan of V. cholerae-infected worms, contributing to prolonged survival of worms after lethal infection. Altogether, our data show for the first time that honokiol and magnolol may be considered as attractive protective or preventive food adjuncts for cholera.
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Affiliation(s)
- Hyung-Ip Kim
- a Department of Biomedical Sciences , College of Medicine, Korea University , Seoul , Republic of Korea
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16
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Miyamoto T, Toyofuku S, Tachiki N, Kimura E, Zhou T, Ozawa T, Nakayama M, Shigemune N, Shimatani K, Tokuda H, Honjoh KI. Specific inhibition of cytotoxicity of Shiga-like toxin 1 of enterohemorrhagic Escherichia coli by gallocatechin gallate and epigallocatechin gallate. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.02.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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17
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Olchowik-Grabarek E, Swiecicka I, Andreeva-Kovaleskaya Z, Solonin A, Bonarska-Kujawa D, Kleszczyńska H, Mavlyanov S, Zamaraeva M. Role of Structural Changes Induced in Biological Membranes by Hydrolysable Tannins from Sumac Leaves (Rhus typhina L.) in their Antihemolytic and Antibacterial Effects. J Membr Biol 2014; 247:533-40. [DOI: 10.1007/s00232-014-9664-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 04/09/2014] [Indexed: 01/03/2023]
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18
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Augustine N, Goel AK, Sivakumar KC, Kumar RA, Thomas S. Resveratrol--a potential inhibitor of biofilm formation in Vibrio cholerae. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:286-289. [PMID: 24182988 DOI: 10.1016/j.phymed.2013.09.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/08/2013] [Accepted: 09/19/2013] [Indexed: 06/02/2023]
Abstract
Resveratrol, a phytochemical commonly found in the skin of grapes and berries, was tested for its biofilm inhibitory activity against Vibrio cholerae. Biofilm inhibition was assessed using crystal violet assay. MTT assay was performed to check the viability of the treated bacterial cells and the biofilm architecture was analysed using confocal laser scanning microscopy. The possible target of the compound was determined by docking analysis. Results showed that subinhibitory concentrations of the compound could significantly inhibit biofilm formation in V. cholerae in a concentration-dependent manner. AphB was found to be the putative target of resveratrol using docking analysis. The results generated in this study proved that resveratrol is a potent biofilm inhibitor of V. cholerae and can be used as a novel therapeutic agent against cholera. To our knowledge, this is the first report of resveratrol showing antibiofilm activity against V. cholerae.
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Affiliation(s)
- Nimmy Augustine
- Cholera and Environmental Microbiology Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram 695 014, Kerala, India
| | - A K Goel
- Defence Research & Development Establishment, Gwalior 474 002, Madhya Pradesh, India
| | - K C Sivakumar
- Distributed Information Sub-Centre, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram 695 014, Kerala, India
| | - R Ajay Kumar
- Mycobacterium Research Group, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram 695 014, Kerala, India
| | - Sabu Thomas
- Cholera and Environmental Microbiology Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram 695 014, Kerala, India.
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19
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Abstract
Cholera is a diarrheal disease that remains an important global health problem with several hundreds of thousands of reported cases each year. This disease is caused by intestinal infection with Vibrio cholerae, which is a highly motile gram-negative bacterium with a single-sheathed flagellum. In the course of cholera pathogenesis, V. cholerae expresses a transcriptional activator ToxT, which subsequently transactivates expressions of two crucial virulence factors: toxin-coregulated pilus and cholera toxin (CT). These factors are responsible for intestinal colonization of V. cholerae and induction of fluid secretion, respectively. In intestinal epithelial cells, CT binds to GM1 ganglioside receptors on the apical membrane and undergoes retrograde vesicular trafficking to endoplasmic reticulum, where it exploits endoplasmic reticulum-associated protein degradation systems to release a catalytic A1 subunit of CT (CT A1) into cytoplasm. CT A1, in turn, catalyzes ADP ribosylation of α subunits of stimulatory G proteins, leading to a persistent activation of adenylate cyclase and an elevation of intracellular cAMP. Increased intracellular cAMP in human intestinal epithelial cells accounts for pathogenesis of profuse diarrhea and severe fluid loss in cholera. This review provides an overview of the pathophysiology of cholera diarrhea and discusses emerging drug targets for cholera, which include V. cholerae virulence factors, V. cholerae motility, CT binding to GM1 receptor, CT internalization and intoxication, as well as cAMP metabolism and transport proteins involved in cAMP-activated Cl(-) secretion. Future directions and perspectives of research on drug discovery and development for cholera are discussed.
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20
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Reddy S, Taylor M, Zhao M, Cherubin P, Geden S, Ray S, Francis D, Teter K. Grape extracts inhibit multiple events in the cell biology of cholera intoxication. PLoS One 2013; 8:e73390. [PMID: 24039929 PMCID: PMC3764128 DOI: 10.1371/journal.pone.0073390] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 07/01/2013] [Indexed: 01/07/2023] Open
Abstract
Vibrio cholerae produces cholera toxin (CT), an AB5 protein toxin that is primarily responsible for the profuse watery diarrhea of cholera. CT is secreted into the extracellular milieu, but the toxin attacks its Gsα target within the cytosol of a host cell. Thus, CT must cross a cellular membrane barrier in order to function. This event only occurs after the toxin travels by retrograde vesicular transport from the cell surface to the endoplasmic reticulum (ER). The catalytic A1 polypeptide then dissociates from the rest of the toxin and assumes an unfolded conformation that facilitates its transfer to the cytosol by a process involving the quality control system of ER-associated degradation. Productive intoxication is blocked by alterations to the vesicular transport of CT and/or the ER-to-cytosol translocation of CTA1. Various plant compounds have been reported to inhibit the cytopathic activity of CT, so in this work we evaluated the potential anti-CT properties of grape extract. Two grape extracts currently sold as nutritional supplements inhibited CT and Escherichia coli heat-labile toxin activity against cultured cells and intestinal loops. CT intoxication was blocked even when the extracts were added an hour after the initial toxin exposure. A specific subset of host-toxin interactions involving both the catalytic CTA1 subunit and the cell-binding CTB pentamer were affected. The extracts blocked toxin binding to the cell surface, prevented unfolding of the isolated CTA1 subunit, inhibited CTA1 translocation to the cytosol, and disrupted the catalytic activity of CTA1. Grape extract could thus potentially serve as a novel therapeutic to prevent or possibly treat cholera.
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Affiliation(s)
- Srikar Reddy
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
- Lake Highland Preparatory School, Orlando, Florida, United States of America
| | - Michael Taylor
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Mojun Zhao
- The Center for Infectious Disease Research and Vaccinology, Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, United States of America
| | - Patrick Cherubin
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Sandra Geden
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Supriyo Ray
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - David Francis
- The Center for Infectious Disease Research and Vaccinology, Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, United States of America
| | - Ken Teter
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
- * E-mail:
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21
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Noda M. [Studies on the mode of action of bacterial AB5 toxins]. Nihon Saikingaku Zasshi 2013; 68:299-311. [PMID: 23985936 DOI: 10.3412/jsb.68.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bacterial AB5 toxins are proteins, produced by pathogenic bacteria including of Vibrio cholerae, Shigella dysenteriae, and enterohaemorrhagic Escherichia coli, which are usually released into the extracellular medium and cause disease by killing or altering the metabolism of target eukaryotic cells. The toxins are usually composed of one A subunit (a toxic domain) and five B subunits (a receptor-binding domain). This article overviews the characteristics and mode of actions of AB5 toxins including cholera toxin, Shiga-like toxin, and subtilase cytotoxin, and highlights current topics related to the roles of the effectors in promoting bacterial infection.
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Affiliation(s)
- Masatoshi Noda
- Department of Molecular Infectiology, Chiba University Graduate School of Medicine, Japan
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22
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Verhelst R, Schroyen M, Buys N, Niewold T. Selection ofEscherichia coliHeat-Labile Toxin (LT) Inhibitors Using Both the GM1-ELISA and the cAMP Vero Cell Assay. Foodborne Pathog Dis 2013; 10:603-7. [DOI: 10.1089/fpd.2012.1434] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
| | - Martine Schroyen
- Livestock Genetics Laboratory, Department of Biosystems, KU Leuven, Heverlee, Belgium
| | - Nadine Buys
- Livestock Genetics Laboratory, Department of Biosystems, KU Leuven, Heverlee, Belgium
| | - Theo Niewold
- Nutrition and Health Unit, KU Leuven, Heverlee, Belgium
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23
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Okada Y, Oh-oka K, Nakamura Y, Ishimaru K, Matsuoka S, Okumura K, Ogawa H, Hisamoto M, Okuda T, Nakao A. Dietary resveratrol prevents the development of food allergy in mice. PLoS One 2012; 7:e44338. [PMID: 22962611 PMCID: PMC3433457 DOI: 10.1371/journal.pone.0044338] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 07/24/2012] [Indexed: 11/29/2022] Open
Abstract
Background Resveratrol is a bioactive polyphenol enriched in red wine that exhibits many beneficial health effects via multiple mechanisms. However, it is unclear whether resveratrol is beneficial for the prevention of food allergy. This study investigated whether resveratrol inhibited the development of food allergy by using a mouse model of the disease. Methodology/Principal Findings Mice fed standard diet or standard diet plus resveratrol were sensitized by intragastric administration of ovalbumin (OVA) and mucosal adjuvant cholera toxin (CT). Several manifestations of food allergy were then compared between the mice. The effects of resveratrol on T cells or dendritic cells were also examined by using splenocytes from OVA-specific T cell-receptor (TCR) transgenic DO11.10 mice or mouse bone marrow-derived dendritic cells (BMDCs) in vitro. We found that mice fed resveratrol showed reduced OVA-specific serum IgE production, anaphylactic reaction, and OVA-induced IL-13 and IFN-ã production from the mesenteric lymph nodes (MLNs) and spleens in comparison to the control mice, following oral sensitization with OVA plus CT. In addition, resveratrol inhibited OVA plus CT-induced IL-4, IL-13, and IFN-ã production in splenocytes from DO11.10 mice associated with inhibition of GATA-3 and T-bet expression. Furthermore, resveratrol suppressed the OVA plus CT-induced CD25 expression and IL-2 production in DO11.10 mice-splenocytes in association with decreases in CD80 and CD86 expression levels. Finally, resveratrol suppressed CT-induced cAMP elevation in association with decreases in CD80 and CD86 expression levels in BMDCs. Conclusions/Significance Ingestion of resveratrol prevented the development of a food allergy model in mice. Given the in vitro findings, resveratrol might do so by inhibiting DC maturation and subsequent early T cell activation and differentiation via downregulation of CT-induced cAMP activation in mice. These results suggest that resveratrol may have potential for prophylaxis against food allergy.
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Affiliation(s)
- Yui Okada
- Department of Immunology, University of Yamanashi Faculty of Medicine Chuo, Yamanashi, Japan
- The Institute of Enology and Viticulture, University of Yamanashi, Koufu, Yamanashi, Japan
| | - Kyoko Oh-oka
- Department of Immunology, University of Yamanashi Faculty of Medicine Chuo, Yamanashi, Japan
| | - Yuki Nakamura
- Department of Immunology, University of Yamanashi Faculty of Medicine Chuo, Yamanashi, Japan
| | - Kayoko Ishimaru
- Department of Immunology, University of Yamanashi Faculty of Medicine Chuo, Yamanashi, Japan
| | - Shuji Matsuoka
- Deparment of Pathology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Ko Okumura
- Atopy Research Center, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Hideoki Ogawa
- Atopy Research Center, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Masashi Hisamoto
- The Institute of Enology and Viticulture, University of Yamanashi, Koufu, Yamanashi, Japan
| | - Tohru Okuda
- The Institute of Enology and Viticulture, University of Yamanashi, Koufu, Yamanashi, Japan
| | - Atsuhito Nakao
- Department of Immunology, University of Yamanashi Faculty of Medicine Chuo, Yamanashi, Japan
- Atopy Research Center, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
- * E-mail:
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24
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Dittmar T, Zänker KS. Horizontal gene transfers with or without cell fusions in all categories of the living matter. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 714:5-89. [PMID: 21506007 PMCID: PMC7120942 DOI: 10.1007/978-94-007-0782-5_2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This article reviews the history of widespread exchanges of genetic segments initiated over 3 billion years ago, to be part of their life style, by sphero-protoplastic cells, the ancestors of archaea, prokaryota, and eukaryota. These primordial cells shared a hostile anaerobic and overheated environment and competed for survival. "Coexist with, or subdue and conquer, expropriate its most useful possessions, or symbiose with it, your competitor" remain cellular life's basic rules. This author emphasizes the role of viruses, both in mediating cell fusions, such as the formation of the first eukaryotic cell(s) from a united crenarchaeon and prokaryota, and the transfer of host cell genes integrated into viral (phages) genomes. After rising above the Darwinian threshold, rigid rules of speciation and vertical inheritance in the three domains of life were established, but horizontal gene transfers with or without cell fusions were never abolished. The author proves with extensive, yet highly selective documentation, that not only unicellular microorganisms, but the most complex multicellular entities of the highest ranks resort to, and practice, cell fusions, and donate and accept horizontally (laterally) transferred genes. Cell fusions and horizontally exchanged genetic materials remain the fundamental attributes and inherent characteristics of the living matter, whether occurring accidentally or sought after intentionally. These events occur to cells stagnating for some 3 milliard years at a lower yet amazingly sophisticated level of evolution, and to cells achieving the highest degree of differentiation, and thus functioning in dependence on the support of a most advanced multicellular host, like those of the human brain. No living cell is completely exempt from gene drains or gene insertions.
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Affiliation(s)
- Thomas Dittmar
- Inst. Immunologie, Universität Witten/Herdecke, Stockumer Str. 10, Witten, 58448 Germany
| | - Kurt S. Zänker
- Institute of Immunologie, University of Witten/Herdecke, Stockumer Str. 10, Witten, 58448 Germany
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