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Lee JH, Kim YG, Park I, Lee J. Antifungal and antibiofilm activities of flavonoids against Candida albicans: Focus on 3,2'-dihydroxyflavone as a potential therapeutic agent. Biofilm 2024; 8:100218. [PMID: 39175909 PMCID: PMC11340609 DOI: 10.1016/j.bioflm.2024.100218] [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: 04/19/2024] [Revised: 07/15/2024] [Accepted: 07/24/2024] [Indexed: 08/24/2024] Open
Abstract
Effective management of microbial biofilms holds significance within food and medical environments. Candida albicans, an opportunistic fungus, forms mucosal biofilms closely linked to candidiasis and drug-resistant infections due to their drug tolerance. Morphologic change from yeast to filamentous cells is a key virulence factor and a prerequisite for biofilm development. This study investigated the anti-fungal and antibiofilm activities of 20 flavonoids against C. albicans. With their known antioxidant capabilities, flavonoids hold promise in combating infections associated with biofilms. Among them, flavone and its derivatives exhibited moderate antifungal activity, 3,2'-dihydroxyflavone (3,2'-DHF) at 1 μg/mL exhibited strong antibiofilm activity (MIC 50 μg/mL). In addition, 3,2'-DHF dramatically inhibited cell aggregation and germ tube/hyphae formation. Transcriptomic analyses revealed that flavone and 3,2'-DHF behaved differently, as 3,2'-DHF downregulated the expressions of germ tube/hyphae-forming and biofilm-related genes (ECE1, HWP1, TEC1, and UME6) but upregulated the biofilm/hyphal regulators (CHK1, IFD6, UCF1, and YWP1). Tests evaluating toxicity with plant and nematode models revealed that flavone and 3,2'-DHF exhibited mild toxicity. Current results indicate that hydroxylated flavone derivatives can enhance anti-fungal and antibiofilm activities and provide a source of potential anti-fungal agents against drug-resistant C. albicans.
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Affiliation(s)
| | | | - Inji Park
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea
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Romário-Silva D, Franchin M, Alencar SM, Bueno-Silva B, de Cássia Orlandi Sardi J, da Silva ACB, Cruz-Vieira F, da Silva PV, Rosalen PL. Antimicrobial and antibiofilm activities of Brazilian organic honey against oral microorganisms. Braz J Microbiol 2024; 55:2285-2292. [PMID: 38744770 PMCID: PMC11405583 DOI: 10.1007/s42770-024-01343-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 04/09/2024] [Indexed: 05/16/2024] Open
Abstract
OBJECTIVE To evaluate the antimicrobial activity of Brazilian honeys against oral microorganisms. DESIGN Organic honeys (OH-1 to OH-8) were diluted (%-w/v) and sterilized by filtration. Antimicrobial activity was defined by determining MIC and CBM against oral Streptococcus. The component responsible for the antimicrobial action was defined by a catalase assay. Antibiofilm activity was evaluated against the monospecies biofilm of Streptococcus mutans (ATCC 700610). RESULTS OHs showed antimicrobial activity principally OH-1, OH-2, OH-3, and OH-7 with MIC values ranging between 10 and 25%. The mechanism of action occurs mainly by hydrogen peroxide produced by honey enzymes. OH-1, OH-2, and OH-7 showed total biofilm destruction at low concentrations. CONCLUSION Brazilian honeys have promising antimicrobial and antibiofilm activity with the potential to control oral microbiota.
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Affiliation(s)
- Diego Romário-Silva
- Department of Biosciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901 - Areião, Piracicaba, SP, 13414-903, Brazil
- Graduate Program in Integrated Dental Sciences, School of Dentistry, University of Cuiabá, Cuiabá, MT, 78065-900, Brazil
| | - Marcelo Franchin
- School of Dentistry, Federal University of Alfenas (Unifal-MG), Alfenas, MG, Brazil
| | - Severino Matias Alencar
- Department of Agri-Food Industry, Food and Nutrition, "Luiz de Queiroz" College of Agriculture, University of São Paulo (USP), Piracicaba, SP, 13418-900, Brazil
| | - Bruno Bueno-Silva
- Department of Biosciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901 - Areião, Piracicaba, SP, 13414-903, Brazil
| | | | - Andréa Cristina Barbosa da Silva
- Department of Pharmacy, Center of Biological and Health Sciences, State University of Paraíba, Campina Grande, Piracicaba, PB, 58429-500, Brazil
| | - Fabiane Cruz-Vieira
- Graduate Program in Integrated Dental Sciences, School of Dentistry, University of Cuiabá, Cuiabá, MT, 78065-900, Brazil
| | - Priscila Vieira da Silva
- Graduate Program in Integrated Dental Sciences, School of Dentistry, University of Cuiabá, Cuiabá, MT, 78065-900, Brazil
| | - Pedro Luiz Rosalen
- Department of Biosciences, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901 - Areião, Piracicaba, SP, 13414-903, Brazil.
- School of Pharmaceutical Sciences, Federal University of Alfenas (Unifal-MG), Alfenas, MG, Brazil.
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Kačániová M, Garzoli S, Ben Hsouna A, Ban Z, Elizondo-Luevano JH, Kluz MI, Ben Saad R, Haščík P, Čmiková N, Waskiewicz-Robak B, Kollár J, Bianchi A. Enhancing Deer Sous Vide Meat Shelf Life and Safety with Eugenia caryophyllus Essential Oil against Salmonella enterica. Foods 2024; 13:2512. [PMID: 39200440 PMCID: PMC11353597 DOI: 10.3390/foods13162512] [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: 07/09/2024] [Revised: 07/27/2024] [Accepted: 08/10/2024] [Indexed: 09/02/2024] Open
Abstract
Modern lifestyles have increased the focus on food stability and human health due to evolving industrial goals and scientific advancements. Pathogenic microorganisms significantly challenge food quality, with Salmonella enterica and other planktonic cells capable of forming biofilms that make them more resistant to broad-spectrum antibiotics. This research examined the chemical composition and antibacterial and antibiofilm properties of the essential oil from Eugenia caryophyllus (ECEO) derived from dried fruits. GC-MS analyses identified eugenol as the dominant component at 82.7%. Additionally, the study aimed to extend the shelf life of sous vide deer meat by applying a plant essential oil and inoculating it with S. enterica for seven days at 4 °C. The essential oil demonstrated strong antibacterial activity against S. enterica. The ECEO showed significant antibiofilm activity, as indicated by the MBIC crystal violet test results. Data from MALDI-TOF MS analysis revealed that the ECEO altered the protein profiles of bacteria on glass and stainless-steel surfaces. Furthermore, the ECEO was found to have a beneficial antibacterial effect on S. enterica. In vacuum-packed sous vide red deer meat samples, the anti-Salmonella activity of the ECEO was slightly higher than that of the control samples. These findings underscore the potential of the ECEO's antibacterial and antibiofilm properties in food preservation and extending the shelf life of meat.
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Affiliation(s)
- Miroslava Kačániová
- Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Trieda Andreja Hlinku 2, 94976 Nitra, Slovakia;
- School of Medical & Health Sciences, University of Economics and Human Sciences in Warsaw, Okopowa 59, 01043 Warszawa, Poland; (M.I.K.); (B.W.-R.)
| | - Stefania Garzoli
- Department of Chemistry and Technologies of Drug, Sapienza University, P. le Aldo Moro, 5, 00185 Rome, Italy;
| | - Anis Ben Hsouna
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax, B.P “1177”, Sfax 3018, Tunisia; (A.B.H.); (R.B.S.)
- Department of Environmental Sciences and Nutrition, Higher Institute of Applied Sciences and Technology of Mahdia, University of Monastir, Monastir 5000, Tunisia
| | - Zhaojun Ban
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Zhejiang Provincial Key Laboratory of Chemical and Biological Processing Technology of Farm Products, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Hangzhou 310023, China;
| | - Joel Horacio Elizondo-Luevano
- Faculty of Agronomy, Universidad Autónoma de Nuevo León (UANL), Av. Francisco Villa S/N, Col. Ex Hacienda el Canadá, General Escobedo, Nuevo León 66050, Mexico;
| | - Maciej Ireneusz Kluz
- School of Medical & Health Sciences, University of Economics and Human Sciences in Warsaw, Okopowa 59, 01043 Warszawa, Poland; (M.I.K.); (B.W.-R.)
| | - Rania Ben Saad
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax, B.P “1177”, Sfax 3018, Tunisia; (A.B.H.); (R.B.S.)
| | - Peter Haščík
- Institute of Food Technology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture, Trieda Andreja Hlinku 2, 94976 Nitra, Slovakia;
| | - Natália Čmiková
- Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Trieda Andreja Hlinku 2, 94976 Nitra, Slovakia;
| | - Božena Waskiewicz-Robak
- School of Medical & Health Sciences, University of Economics and Human Sciences in Warsaw, Okopowa 59, 01043 Warszawa, Poland; (M.I.K.); (B.W.-R.)
| | - Ján Kollár
- Institute of Landscape Architecture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Tulipánová 7, 94976 Nitra, Slovakia;
| | - Alessandro Bianchi
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy;
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Nawaz T, Tajammal A, Qurashi AW, Nisa MU, Binjawhar DN, Iqbal M. Synthesis, antibacterial, antibiofilm, and docking studies of chalcones against multidrug resistance pathogens. Heliyon 2024; 10:e30618. [PMID: 39044977 PMCID: PMC11263648 DOI: 10.1016/j.heliyon.2024.e30618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/22/2024] [Accepted: 04/30/2024] [Indexed: 07/25/2024] Open
Abstract
The escalating threat of drug-resistant microbes underscores the urgent need for novel antimicrobial agents. In response, considerable research effort has been directed towards developing innovative frameworks and strategies to address this challenge. Chalcones, known for their broad-spectrum biological activities, have emerged as promising candidates for combating drug resistance. In this study, a series of 2'-Hydroxychalcones (5a, 5b, 5c, and 5d) with varying electron withdrawing and donating groups were synthesized via Claisen Schmidt condensation. FT-IR, 1H NMR, and 13C NMR analyses were employed to confirm the structure of the synthesized compounds. Subsequent evaluation of the synthesized compounds revealed their potential as antibacterial and antibiofilm agents. Notably, compounds 5a and 5d exhibited potent antibacterial activity against multidrug-resistant (MDR) bacteria E. coli, P. aeruginosa, K. pneumoniae, and S. aureus, surpassing the reference drug Ciprofloxacin (30 μg/mL) and other synthesized compounds. Compound 5d showed a notable 19.5 mm zone of inhibition against K. pneumoniae. Furthermore, 5a (at a concentration of 30 μg) and 5d (at a concentration of 50 μg) exhibited statistically significant (P > 0.05) biofilm inhibition efficacy compared to Ciprofloxacin (30 μg/mL). The synthesized chalcones 5a-5d were also docked via PachDock molecular docking software for Glucosamine-6-phosphate (GlcN-6-P) synthase inhibition and showed that ligand 5a exhibited outstanding results with score 4238 and ACE value -160.89 kcal/mol, consistent with the observed antibacterial activity. These findings underscore the potential of chalcones, particularly 5a and 5d, as promising candidates for the development of new antimicrobial agents targeting drug-resistant microbes and biofilm formation.
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Affiliation(s)
- Tariq Nawaz
- Department of Chemistry, Lahore Garrison University, Pakistan
| | - Affifa Tajammal
- Department of Chemistry, Lahore Garrison University, Pakistan
| | | | - Mehr-un Nisa
- Department of Chemistry, The University of Lahore, 1-km Defence Road, Lahore, Pakistan
| | - Dalal Nasser Binjawhar
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Munawar Iqbal
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
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Rajangam SL, Narasimhan MK. Current treatment strategies for targeting virulence factors and biofilm formation in Acinetobacter baumannii. Future Microbiol 2024; 19:941-961. [PMID: 38683166 PMCID: PMC11290764 DOI: 10.2217/fmb-2023-0263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/20/2024] [Indexed: 05/01/2024] Open
Abstract
A higher prevalence of Acinetobacter baumannii infections and mortality rate has been reported recently in hospital-acquired infections (HAI). The biofilm-forming capability of A. baumannii makes it an extremely dangerous pathogen, especially in device-associated hospital-acquired infections (DA-HAI), thereby it resists the penetration of antibiotics. Further, the transmission of the SARS-CoV-2 virus was exacerbated in DA-HAI during the epidemic. This review specifically examines the complex interconnections between several components and genes that play a role in the biofilm formation and the development of infections. The current review provides insights into innovative treatments and therapeutic approaches to combat A. baumannii biofilm-related infections, thereby ultimately improving patient outcomes and reducing the burden of HAI.
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Affiliation(s)
- Seetha Lakshmi Rajangam
- Department of Genetic Engineering, School of Bioengineering, College of Engineering & Technology, SRM Institute of Science & Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Manoj Kumar Narasimhan
- Department of Genetic Engineering, School of Bioengineering, College of Engineering & Technology, SRM Institute of Science & Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
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Elhrech H, Aguerd O, El Kourchi C, Gallo M, Naviglio D, Chamkhi I, Bouyahya A. Comprehensive Review of Olea europaea: A Holistic Exploration into Its Botanical Marvels, Phytochemical Riches, Therapeutic Potentials, and Safety Profile. Biomolecules 2024; 14:722. [PMID: 38927125 PMCID: PMC11201932 DOI: 10.3390/biom14060722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Human health is now inextricably linked to lifestyle choices, which can either protect or predispose people to serious illnesses. The Mediterranean diet, characterized by the consumption of various medicinal plants and their byproducts, plays a significant role in protecting against ailments such as oxidative stress, cancer, and diabetes. To uncover the secrets of this natural treasure, this review seeks to consolidate diverse data concerning the pharmacology, toxicology, phytochemistry, and botany of Olea europaea L. (O. europaea). Its aim is to explore the potential therapeutic applications and propose avenues for future research. Through web literature searches (using Google Scholar, PubMed, Web of Science, and Scopus), all information currently available on O. europaea was acquired. Worldwide, ethnomedical usage of O. europaea has been reported, indicating its effectiveness in treating a range of illnesses. Phytochemical studies have identified a range of compounds, including flavanones, iridoids, secoiridoids, flavonoids, triterpenes, biophenols, benzoic acid derivatives, among others. These components exhibit diverse pharmacological activities both in vitro and in vivo, such as antidiabetic, antibacterial, antifungal, antioxidant, anticancer, and wound-healing properties. O. europaea serves as a valuable source of conventional medicine for treating various conditions. The findings from pharmacological and phytochemical investigations presented in this review enhance our understanding of its therapeutic potential and support its potential future use in modern medicine.
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Affiliation(s)
- Hamza Elhrech
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco; (H.E.); (O.A.)
| | - Oumayma Aguerd
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco; (H.E.); (O.A.)
| | - Chaimae El Kourchi
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco;
| | - Monica Gallo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Daniele Naviglio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 4, 80126 Naples, Italy;
| | - Imane Chamkhi
- Geo-Biodiversity and Natural Patrimony Laboratory (GeoBio), Geophysics, Natural Patrimony, Research Center (GEOPAC), Scientific Institute, Mohammed V University in Rabat, Rabat 10106, Morocco;
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco; (H.E.); (O.A.)
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Namuga C, Muwonge H, Nasifu K, Sekandi P, Sekulima T, Kirabira JB. Hoslundia opposita vahl; a potential source of bioactive compounds with antioxidant and antibiofilm activity for wound healing. BMC Complement Med Ther 2024; 24:236. [PMID: 38886717 PMCID: PMC11181642 DOI: 10.1186/s12906-024-04540-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 06/06/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Biofilms and oxidative stress retard wound healing. The resistance of biofilms to antibiotics has led to a search for alternative approaches in biofilm elimination. Antioxidants work synergistically with antibacterial agents against biofilms. Hence recent research has suggested plants as candidates in the development of new alternatives in biofilm treatments and as antioxidants due to the presence of phytocompounds which are responsible for their bioactivities. Hoslundia opposita Vahl is one of the plants used by traditional healers to treat wounds and other infections, this makes it a potential candidate for drug discovery hence, in this study, we investigate the antibiofilm and antioxidant activity of methanolic extract of hoslundia opposita Vahl from Uganda. We also identify phytochemicals responsible for its bioactivity. METHOD the plant was extracted by maceration using methanol, and the extract was investigated for antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) assay. The antibiofilm activity using microtiter plate assay (MTP) assay where the Minimum biofilm inhibitory concentration required to inhibit 50% or 90% of the biofilm (MBIC50 and MBIC90) and Minimum biofilm eradication concentration required to remove 50% or 90% of the biofilm (MBEC50 and MBEC90) were measured. It was further analysed for its phytochemical composition using quantitative screening, as well as Gas chromatography-mass spectrometry (GC-MS) and Liquid chromatography mass-spectrometry (LC-MS). RESULTS H. Opposita Vahl extract showed good antioxidant activity with of 249.6 mg/mL. It inhibited the growth of P. aeruginosa and S. aureus biofilms with MBIC50 of 28.37 mg/mL and 10 mg/mL, respectively. It showed the ability to eradicate P. aeruginosa and S. aureus biofilms with MBEC50 of 23.85 and 39.01 mg/mL respectively. Phytochemical analysis revealed the presence of alkaloids, tannins, flavonoids, and phenols. GC-MS analysis revealed 122 compounds in the extract of which, 23 have evidence of antioxidant or antibiofilm activity in literature. The most abundant compounds were; 1,4- Citric acid, Tetracontane-1,40-diol (43.43.3%, 1, Olean-12-en-28-oic acid, 3-hydroxy-, methyl ester, (3.beta) (15.36%) 9-Octadecenamide (12.50%), Squalene (11.85%) Palmitic Acid 4TMS (11.28%), and alpha Amyrin (11.27%). The LC-MS identified 115 and 57 compounds in multiple reaction mode (MRM) and scan modes respectively. CONCLUSION H. opposita Vahl showed antibiofilm and antioxidant activity due to bioactive compounds identified, hence the study justifies its use for wound healing. It can be utilised in further development of new drugs as antibiofilm and antioxidants.
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Affiliation(s)
- Catherine Namuga
- Depatment of Polymer, Textile, and Industrial Engineering, Busitema University, P. O. Box 256, Tororo, Uganda.
- Department of Physiology, College of Health Sciences, Makerere University, P. O. Box 7062, Kampala, Uganda.
| | - Haruna Muwonge
- Department of Chemistry, College of Natural Sciences, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - Kerebba Nasifu
- Department of Microbiology, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - Peter Sekandi
- Department of Microbiology, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - Tahalu Sekulima
- Department of Mechanical Engineering, College of Engineering, Design, Art, and Technology, Makerere University, Kampala, Uganda
| | - John Baptist Kirabira
- Department of Physiology, College of Health Sciences, Makerere University, P. O. Box 7062, Kampala, Uganda
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Amparo TR, Sousa LRD, Xavier VF, Seibert JB, Paiva DL, da Silva DDS, Teixeira LFDM, dos Santos ODH, Vieira PMDA, de Souza GHB, Brandão GC. Protium spruceanum Extract Enhances Mupirocin Activity When Combined with Nanoemulsion-Based Hydrogel: A Multi-Target Strategy for Treating Skin and Soft Tissue Infections. Pharmaceutics 2024; 16:700. [PMID: 38931824 PMCID: PMC11207036 DOI: 10.3390/pharmaceutics16060700] [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: 04/12/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 06/28/2024] Open
Abstract
The treatment of skin and soft tissue infections (SSTIs) can be challenging due to bacterial resistance, particularly from strains like MRSA and biofilm formation. However, combining conventional antibiotics with natural products shows promise in treating SSTIs. The objective of this study is to develop a nanoemulsion-based hydrogel containing Protium spruceanum extract and mupirocin and evaluate its potential for the treatment of SSTIs. The nanoemulsion was obtained by phase inversion and subsequently characterized. The antibacterial activity was evaluated in vitro against S. aureus MRSA, including the synergism of the combination, changes in membrane permeability using flow cytometry, and the anti-biofilm effect. In addition, the irritative potential was evaluated by the HET-CAM assay. The combination exhibited synergistic antibacterial activity against S. aureus and MRSA due to the extract enhancing membrane permeability. The hydrogel demonstrated suitable physicochemical properties, inhibited biofilm formation, and exhibited low irritation. The formulation was nanometric (176.0 ± 1.656 nm) and monodisperse (polydispersity index 0.286 ± 0.011). It exhibited a controlled release profile at 48 h and high encapsulation efficacy (94.29 ± 4.54% for quercitrin and 94.20 ± 5.44% for mupirocin). Therefore, these findings suggest that the hydrogel developed could be a safe and effective option for treating SSTIs.
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Affiliation(s)
- Tatiane Roquete Amparo
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | - Lucas Resende Dutra Sousa
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | - Viviane Flores Xavier
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | - Janaína Brandão Seibert
- Laboratory of Pathology and Microbial Control, University of São Paulo (USP-ESALQ), Piracicaba 13418-900, Brazil;
| | - Débora Luiza Paiva
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | - Débora dos Santos da Silva
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | | | - Orlando David Henrique dos Santos
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | | | - Gustavo Henrique Bianco de Souza
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
| | - Geraldo Célio Brandão
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil; (L.R.D.S.); (V.F.X.); (D.L.P.); (D.d.S.d.S.); (O.D.H.d.S.); (G.H.B.d.S.); (G.C.B.)
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Benny AT, Thamim M, Srivastava P, Suresh S, Thirumoorthy K, Rangasamy L, S K, Easwaran N, Radhakrishnan EK. Synthesis and study of antibiofilm and antivirulence properties of flavonol analogues generated by palladium catalyzed ligand free Suzuki-Miyaura coupling against Pseudomonas aeruginosa PAO1. RSC Adv 2024; 14:12278-12293. [PMID: 38633488 PMCID: PMC11019961 DOI: 10.1039/d3ra08617h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 04/08/2024] [Indexed: 04/19/2024] Open
Abstract
The Suzuki-Miyaura coupling is one of the ubiquitous method for the carbon-carbon bond-forming reactions in organic chemistry. Its popularity is due to its ability to undergo extensive coupling reactions to generate a broad range of biaryl motifs in a straightforward manner displaying a high level of functional group tolerance. A convenient and efficient synthetic route to arylate different substituted flavonols through the Suzuki-Miyaura cross-coupling reaction has been explained in this study. The arylated products were acquired by the coupling of a variety of aryl boronic acids with flavonols under Pd(OAc)2 catalyzed reaction conditions in a ligand-free reaction strategy. Subsequently, the antibiofilm and antivirulence properties of the arylated flavonols against Pseudomonas aeruginosa PAO1 were studied thoroughly. The best ligands for quorum sensing proteins LasR, RhlR, and PqsR were identified using molecular docking study. These best fitting ligands were then studied for their impact on gene expression level of P. aeruginosa by RT-PCR towards quorum sensing genes lasB, rhlA, and pqsE. The downregulation in the gene expression with the effect of synthesized flavonols endorse the antibiofilm efficiency of the compounds.
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Affiliation(s)
- Anjitha Theres Benny
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | - Masthan Thamim
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | | | - Sindoora Suresh
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | - Krishnan Thirumoorthy
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | - Loganathan Rangasamy
- Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), Vellore Institute of Technology Vellore-632014 India
| | - Karthikeyan S
- Department of Biotechnology, School of Bioscience and Technology, Vellore Institute of Technology Vellore-632014 India
| | - Nalini Easwaran
- Department of Integrative Biology, School of Bioscience and Technology, Vellore Institute of Technology VIT Vellore-632014 India
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Mazzantini D, Massimino M, Calvigioni M, Rossi V, Celandroni F, Lupetti A, Batoni G, Ghelardi E. Anti-Staphylococcal Biofilm Effects of a Liposome-Based Formulation Containing Citrus Polyphenols. Antibiotics (Basel) 2024; 13:318. [PMID: 38666994 PMCID: PMC11047357 DOI: 10.3390/antibiotics13040318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/26/2024] [Accepted: 03/29/2024] [Indexed: 04/29/2024] Open
Abstract
Biofilms are surface-associated microbial communities embedded in a matrix that is almost impenetrable to antibiotics, thus constituting a critical health threat. Biofilm formation on the cornea or ocular devices can lead to serious and difficult-to-treat infections. Nowadays, natural molecules with antimicrobial activity and liposome-based delivery systems are proposed as anti-biofilm candidates. In this study, the anti-biofilm activity of a formulation containing citrus polyphenols encapsulated in liposomes was evaluated against Staphylococcus aureus and Staphylococcus epidermidis, the most common agents in ocular infections. The formulation activity against planktonic staphylococci was tested by broth microdilution and sub-inhibitory concentrations were used to evaluate the effect on biofilm formation using the crystal violet (CV) assay. The eradicating effect of the preparation on mature biofilms was investigated by the CV assay, plate count, and confocal laser scanning microscopy. The product was bactericidal against staphylococci at a dilution of 1:2 or 1:4 and able to reduce biofilm formation even if diluted at 1:64. The formulation also had the ability to reduce the biomass of mature biofilms without affecting the number of cells, suggesting activity on the extracellular matrix. Overall, our results support the application of the used liposome-encapsulated polyphenols as an anti-biofilm strategy to counter biofilm-associated ocular infections.
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Affiliation(s)
| | | | | | | | | | | | | | - Emilia Ghelardi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via San Zeno 37, 56123 Pisa, Italy; (D.M.); (M.M.); (M.C.); (V.R.); (F.C.); (A.L.); (G.B.)
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11
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HADJAB W, ZELLAGUI A, MOKRANI M, ÖZTÜRK M, CEYLAN Ö, GHERRAF N, BENSOUICI C. Pharmacological Potential Effects of Algerian Propolis Against Oxidative Stress, Multidrug-Resistant Pathogens Biofilm and Quorum-Sensing. Turk J Pharm Sci 2024; 21:71-80. [PMID: 38529559 PMCID: PMC10982881 DOI: 10.4274/tjps.galenos.2023.64369] [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: 08/17/2022] [Accepted: 04/08/2023] [Indexed: 03/27/2024]
Abstract
Objectives This study sought to examine the chemical profile, antioxidant, antimicrobial, antibiofilm, and anti-quorum sensing potential of two propolis ethanolic extracts (PEEs) collected from northeast Algeria. Materials and Methods To achieve the main objectives of this study, multiple in vitro tests were employed. The phenolic and flavonoid contents were analyzed, and the chemical composition of both PEE was determined by high-performance liquid chromatography. The antioxidant properties of the propolis extracts were investigated using six complementary tests. The inhibitory effects of propolis extracts were evaluated against multidrug-resistant (MDR) clinical isolates using agar well diffusion and microdilution methods, whereas their antibiofilm and quorum-sensing disruption effects were determined by spectrophotometric microplate methods. Results The results demonstrated that phenolic and flavonoid contents were higher in propolis from the Guelma (PEEG) region (PEEG; 188.50 ± 0.33 μg GAE/mg E, 144.23 ± 1.03 μg QE/mg E), respectively. Interestingly, different components were identified, and cynarin was the major compound detected. The PEEG sample exhibited potential antioxidant effects in scavenging ABTS•+ radicals with minimal inhibitory concentration values equal to 10.46 ± 1.40 µg/mL. Furthermore, the highest antibacterial activity was recorded by PEEG against Gram-positive Staphylococcus aureus MDR1. Similarly, PEEG effectively inhibited the biofilm formation of S. aureus MDR1 and the degradation of biofilm was up to 60%. In addition, quorum sensing disruption revealed that both extracts have a moderate capacity for violacein inhibition by the Chromobacterium violaceum ATCC 12472 strain in a concentration-dependent manner. Conclusion These findings indicate that propolis can be regarded as a natural therapeutic agent for health problems associated with MDR bacteria and oxidative stress.
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Affiliation(s)
- Widad HADJAB
- Larbi Ben M’hidi University, Faculty of Exact Science and Life Science and Nature, Department of Laboratory of Biomolecules and Plant Breeding, Oum el-Bouaghi, Algeria
| | - Amar ZELLAGUI
- Larbi Ben M’hidi University, Faculty of Exact Science and Life Science and Nature, Department of Laboratory of Biomolecules and Plant Breeding, Oum el-Bouaghi, Algeria
| | - Meryem MOKRANI
- Larbi Ben M’hidi University, Faculty of Exact Science and Life Science and Nature, Department of Laboratory of Biomolecules and Plant Breeding, Oum el-Bouaghi, Algeria
| | - Mehmet ÖZTÜRK
- Muğla Sıtkı Koçman University, Ula Ali Koçman Vocational School, Department of Food Quality and Analysis Program, Muğla, Türkiye
| | - Özgür CEYLAN
- Muğla Sıtkı Koçman University, Ula Ali Koçman Vocational School, Department of Food Quality and Analysis Program, Muğla, Türkiye
| | - Noureddine GHERRAF
- Larbi Ben M’hidi University, Department of Laboratory of Natural Resources and Management of Sensitive Environments, Oum el-Bouaghi, Algeria
| | - Chawki BENSOUICI
- Abdelhamid Mehri Constantine 2 University, Biotechnology Research Centre, Constantine, Algeria
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12
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Pashizeh F, Mansouri A, Bazzazan S, Abdihaji M, Khaleghian M, Bazzazan S, Rezei N, Eskandari A, Mashayekhi F, Heydari M, Tavakkoli Yaraki M. Bioresponsive gingerol-loaded alginate-coated niosomal nanoparticles for targeting intracellular bacteria and cancer cells. Int J Biol Macromol 2024; 258:128957. [PMID: 38154726 DOI: 10.1016/j.ijbiomac.2023.128957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Targeting and treating intracellular pathogen infections has been long-standing challenge, particularly in light of the escalating prevalence of antimicrobial resistance. Herein, an optimum formulation of alginate (AL)-coated niosome-based carriers for delivery of herbal extract Gingerol (Gin) was developed to treat intracellular pathogen infections and cancer cells. We used Gin-Nio@AL as a model drug to assess its efficacy against Gram-negative/positive bacteria and breast cancer cell lines. Our investigation affirmed its heightened antibacterial and anticancer properties. The antibacterial activity of Gin-Nio@AL against intracellular Staphylococcus aureus (S. aureus) and pseudomonas aeruginosa (P. aeruginosa) was also tested. In the current study, the niosome nanoparticles containing herbal extract Gingerol were optimized regarding lipid content and Surfactant per Cholesterol molar ratio. The developed formulation provided potential advantages, such as smooth globular surface morphology, small diameter (240.68 nm), pH-sensitive sustained release, and high entrapment efficiency (94.85 %). The release rate of Gin from AL-coated niosomes (Gin-Nio@AL) in physiological and acidic pH is lower than uncoated nanoparticles (Gin-Nio). Besides, the release rate of Gin from niosomal formulations increased in acidic pH. The Gin-Nio@AL demonstrated good antimicrobial activity against S. aureus and P. aeruginosa, and compared to Gin-Nio, the MIC values decreased to 7.82 ± 0.00 and 1.95 ± 0.00 μg/mL, respectively. In addition, the time-kill assay results showed that the developed formulation significantly reduced the number of bacteria in both strains compared to other tested groups. The microtiter data and scanning electron microscope micrography showed that Gin-Nio@AL has a more significant inhibitory effect on biofilm formation than Gin-Nio and Gin. The cell cytotoxicity evaluation showed that Gin-Nio@AL reduced the survival rate of MDA-MB-231 cancer cells to 52.4 % and 45.2 % after 48 h and 72 h, respectively. The elimination of intracellular pathogens was investigated through a breast cancer cell infection in an in vitro model. Gin-Nio@AL exhibited an enhanced and sustained intracellular antibacterial activity against pathogens-infected breast cancer cells compared to other tested formulations. Overall, Gin-Nio@AL enables the triggered release and targeting of intra-extra cellular bacteria and cancer cells and provides a novel and promising candidate for treating intracellular pathogen infections and cancer cells.
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Affiliation(s)
- Fatemeh Pashizeh
- Department of Immunology, School of Medicine, Shahid Sadoughi University of Medical Science Yazd, Iran
| | - Afsoun Mansouri
- School of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Saina Bazzazan
- Department of Community Medicine, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Mohammadreza Abdihaji
- Department of Biology, The Center for Genomics and Bioinformatics, Indiana University, Bloomington, IN, USA
| | | | - Saba Bazzazan
- Department of Community Medicine, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Niloufar Rezei
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Alireza Eskandari
- CTERC, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farzaneh Mashayekhi
- Rasoul Akram Hospital, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Maryam Heydari
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Mohammad Tavakkoli Yaraki
- School of Natural Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia.
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13
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Khataybeh B, Jaradat Z, Ababneh Q. Anti-bacterial, anti-biofilm and anti-quorum sensing activities of honey: A review. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116830. [PMID: 37400003 DOI: 10.1016/j.jep.2023.116830] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/31/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Man has used honey to treat diseases since ancient times, perhaps even before the history of medicine itself. Several civilizations have utilized natural honey as a functional and therapeutic food to ward off infections. Recently, researchers worldwide have been focusing on the antibacterial effects of natural honey against antibiotic-resistant bacteria. AIM OF THE STUDY This review aims to summarize research on the use of honey properties and constituents with their anti-bacterial, anti-biofilm, and anti-quorum sensing mechanisms of action. Further, honey's bacterial products, including probiotic organisms and antibacterial agents which are produced to curb the growth of other competitor microorganisms is addressed. MATERIALS AND METHODS In this review, we have provided a comprehensive overview of the antibacterial, anti-biofilm, and anti-quorum sensing activities of honey and their mechanisms of action. Furthermore, the review addressed the effects of antibacterial agents of honey from bacterial origin. Relevant information on the antibacterial activity of honey was obtained from scientific online databases such as Web of Science, Google Scholar, ScienceDirect, and PubMed. RESULTS Honey's antibacterial, anti-biofilm, and anti-quorum sensing activities are mostly attributed to four key components: hydrogen peroxide, methylglyoxal, bee defensin-1, and phenolic compounds. The performance of bacteria can be altered by honey components, which impact their cell cycle and cell morphology. To the best of our knowledge, this is the first review that specifically summarizes every phenolic compound identified in honey along with their potential antibacterial mechanisms of action. Furthermore, certain strains of beneficial lactic acid bacteria such as Bifidobacterium, Fructobacillus, and Lactobacillaceae, as well as Bacillus species can survive and even grow in honey, making it a potential delivery system for these agents. CONCLUSION Honey could be regarded as one of the best complementary and alternative medicines. The data presented in this review will enhance our knowledge of some of honey's therapeutic properties as well as its antibacterial activities.
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Affiliation(s)
- Batool Khataybeh
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Ziad Jaradat
- Department of Biotechnology and Genetic Engineering, Jordan University of Science and Technology, Irbid, 22110, Jordan.
| | - Qutaiba Ababneh
- Department of Biotechnology and Genetic Engineering, Jordan University of Science and Technology, Irbid, 22110, Jordan
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14
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Roese KHC, Torlone C, Cooper LA, Esposito L, Deveau AM, Röse USR, Burkholder KM. Pyrogallol impairs staphylococcal biofilm formation via induction of bacterial oxidative stress. J Appl Microbiol 2023; 134:lxad270. [PMID: 37974055 DOI: 10.1093/jambio/lxad270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/13/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
AIMS To examine the effect of the phenolic compound pyrogallol on staphylococcal biofilm formation. METHODS AND RESULTS In crystal violet biofilm assays, pyrogallol-reduced biofilm formation in Staphylococcus epidermidis ATCC 35984, Staph. epidermidis NRRL-B41021, Staphylococcus aureus USA300, and Staph. aureus Newman, without significantly impairing bacterial viability. Pyrogallol-mediated impairment of biofilm formation was likely due to induction of bacterial oxidative stress, as its effect was greater in catalase-deficient versus WT Staph. aureus, and biofilm production was rescued by exogenous catalase. The effect of pyrogallol on staphylococcal biofilm formation mirrored that of the known oxidant hydrogen peroxide, which also reduced biofilm formation in a dose-dependent manner. CONCLUSIONS Pyrogallol reduces biofilm formation in S. aureus and Staph. epidermidis in a mechanism involving induction of bacterial oxidative stress.
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Affiliation(s)
- Katharina H C Roese
- School of Biological Sciences, University of New England, Biddeford, ME 04005, USA
| | - Christina Torlone
- School of Biological Sciences, University of New England, Biddeford, ME 04005, USA
| | - Lauren A Cooper
- School of Biological Sciences, University of New England, Biddeford, ME 04005, USA
| | - Lee Esposito
- School of Biological Sciences, University of New England, Biddeford, ME 04005, USA
| | - Amy M Deveau
- School of Mathematical and Physical Sciences, University of New England, Biddeford, ME 04005, USA
| | - Ursula S R Röse
- School of Biological Sciences, University of New England, Biddeford, ME 04005, USA
| | - Kristin M Burkholder
- School of Biological Sciences, University of New England, Biddeford, ME 04005, USA
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15
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Asraoui F, El Mansouri F, Cacciola F, Brigui J, Louajri A, Simonetti G. Biofilm Inhibition of Inula viscosa (L.) Aiton and Globularia alypum L. Extracts Against Candida Infectious Pathogens and In Vivo Action on Galleria mellonella Model. Adv Biol (Weinh) 2023; 7:e2300081. [PMID: 37612795 DOI: 10.1002/adbi.202300081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/19/2023] [Indexed: 08/25/2023]
Abstract
The increasing importance of fungal infections has fueled the search for new beneficial alternatives substance from plant extracts. The current study investigates the antifungal and antibiofilm activity of Inula viscosa (L.) Aiton and Globularia alypum (L.) leaves extracts against Candida both in vitro and in vivo. The inhibition of planktonic and sessile Candida albicans and Candida glabrata growth using both leaf extracts are evaluated. Moreover; an in vivo infection model using Galleria mellonella larvae; infected and treated with the extracts are performed. All extracts show fungicidal activity; with a minimum fungicidal concentration (MFC) ranging from 128 to 512 µg mL-1 against the two selected strains of Candida. In particular, the best results are obtained with methanolic extract of I. viscosa and G. alypum with an MFC value of 128 µg mL-1 . The extracts are capable to prevent 90% of biofilm development at minor concentrations ranging from 100.71 ± 2.49 µg mL-1 to 380.4 ± 0.92 µg mL-1 . In vivo, tests on Galleria mellonella larvae show that the extracts increase the survival of the larvae infected with Candida. The attained results reveal that I. viscosa and G. alypum extracts may be considered as new antifungal agents and biofilm inhibiting agents for the pharmaceutical and agro-food field.
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Affiliation(s)
- Fadoua Asraoui
- Laboratory of Applied Biology and Pathologies, Department of Biology, Faculty of Sciences of Tetouan, Abdelmalek Essaâdi University, Tetouan, 93000, Morocco
| | - Fouad El Mansouri
- Research Team: Materials, Environment and Sustainable Development (MEDD), Faculty of Sciences and Techniques of Tangier, Abdelmalek Essaadi University, B.P. 416, Tangier, 90000, Morocco
| | - Francesco Cacciola
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, Messina, 98125, Italy
| | - Jamal Brigui
- Research Team: Materials, Environment and Sustainable Development (MEDD), Faculty of Sciences and Techniques of Tangier, Abdelmalek Essaadi University, B.P. 416, Tangier, 90000, Morocco
| | - Adnane Louajri
- Laboratory of Applied Biology and Pathologies, Department of Biology, Faculty of Sciences of Tetouan, Abdelmalek Essaâdi University, Tetouan, 93000, Morocco
| | - Giovanna Simonetti
- Dipartimento di Biologia Ambientale, Università degli Studi di Roma "La Sapienza", P.le Aldo Moro 5, Rome, 00185, Italy
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16
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Calvo LG, Castillo A, Villarino RA, Rama JLR, Abril AG, de Miguel T. Study of the Antibacterial Activity of Rich Polyphenolic Extracts Obtained from Cytisus scoparius against Foodborne Pathogens. Antibiotics (Basel) 2023; 12:1645. [PMID: 37998847 PMCID: PMC10669525 DOI: 10.3390/antibiotics12111645] [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: 10/31/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023] Open
Abstract
Natural extracts containing high polyphenolic concentrations may act as good antimicrobials for their antibacterial and antibiofilm activity. The present research characterizes two hydro-organic extracts with high polyphenolic content, obtained from the shrub Cytisus scoparius as antipathogenic candidates. As a result of their own composition, both extracts, LE050 and PG050, have shown pronounced bioactivities with potential uses, especially in agricultural, livestock production, food manufacturing, and pharmaceutical industries. Polyphenolic compounds were extracted by using adjusted hydro-organic solvent mixtures. These extracts' in vitro antimicrobial activity was evaluated on Gram-positive and Gram-negative pathogenic bacteria, giving special attention to those involved in food contamination. Due to this, the biofilm dispersion was assessed on Listeria monocytogenes, Staphylococcus aureus and Pseudomonas aeruginosa. The extracts showed antimicrobial activity against the pathogenic species tested, presenting IC50 values between 0.625-20% v/v. Different behaviors have been detected between both extracts, probably linked to their distinct polyphenol composition, being LE050 extract the one with most promising bioactive applications. Finally, the results from the biofilm dispersion assays reveal that the extracts exhibit a good antibiofilm activity against the pathogenic bacteria tested.
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Affiliation(s)
- Lorena G. Calvo
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (L.G.C.); (R.-A.V.); (J.L.R.R.); (A.G.A.)
| | - Aly Castillo
- i-Grape Laboratory, Emprendia, Campus Vida, E-15782 Santiago de Compostela, Spain;
- Laboratory of Research and Development of Analytical Solutions (LIDSA), Department of Analytical Chemistry, Nutrition and Food Science, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Rosa-Antía Villarino
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (L.G.C.); (R.-A.V.); (J.L.R.R.); (A.G.A.)
| | - José Luis R. Rama
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (L.G.C.); (R.-A.V.); (J.L.R.R.); (A.G.A.)
| | - Ana G. Abril
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (L.G.C.); (R.-A.V.); (J.L.R.R.); (A.G.A.)
| | - Trinidad de Miguel
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (L.G.C.); (R.-A.V.); (J.L.R.R.); (A.G.A.)
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17
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Wu H, Chen X, Kong L, Liu P. Mechanical and Biological Properties of Titanium and Its Alloys for Oral Implant with Preparation Techniques: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6860. [PMID: 37959457 PMCID: PMC10649385 DOI: 10.3390/ma16216860] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023]
Abstract
Dental implants have revolutionised restorative dentistry, offering patients a natural-looking and durable solution to replace missing or severely damaged teeth. Titanium and its alloys have emerged as the gold standard among the various materials available due to their exceptional properties. One of the critical advantages of titanium and its alloys is their remarkable biocompatibility which ensures minimal adverse reactions within the human body. Furthermore, they exhibit outstanding corrosion resistance ensuring the longevity of the implant. Their mechanical properties, including hardness, tensile strength, yield strength, and fatigue strength, align perfectly with the demanding requirements of dental implants, guaranteeing the restoration's functionality and durability. This narrative review aims to provide a comprehensive understanding of the manufacturing techniques employed for titanium and its alloy dental implants while shedding light on their intrinsic properties. It also presents crucial proof-of-concept examples, offering tangible evidence of these materials' effectiveness in clinical applications. However, despite their numerous advantages, certain limitations still exist necessitating ongoing research and development efforts. This review will briefly touch upon these restrictions and explore the evolving trends likely to shape the future of titanium and its alloy dental implants.
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Affiliation(s)
| | | | | | - Ping Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (H.W.); (X.C.); (L.K.)
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18
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Guo Y, Li Z, Chen F, Chai Y. Polyphenols in Oral Health: Homeostasis Maintenance, Disease Prevention, and Therapeutic Applications. Nutrients 2023; 15:4384. [PMID: 37892459 PMCID: PMC10610286 DOI: 10.3390/nu15204384] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 09/30/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Polyphenols, a class of bioactive compounds with phenolic structures, are abundant in human diets. They have gained attention in biomedical fields due to their beneficial properties, including antioxidant, antibacterial, and anti-inflammatory activities. Therefore, polyphenols can prevent multiple chronic or infectious diseases and may help in the prevention of oral diseases. Oral health is crucial to our well-being, and maintaining a healthy oral microbiome is essential for preventing various dental and systemic diseases. However, the mechanisms by which polyphenols modulate the oral microbiota and contribute to oral health are still not fully understood, and the application of polyphenol products lies in different stages. This review provides a comprehensive overview of the advancements in understanding polyphenols' effects on oral health: dental caries, periodontal diseases, halitosis, and oral cancer. The mechanisms underlying the preventive and therapeutic effects of polyphenols derived from dietary sources are discussed, and new findings from animal models and clinical trials are included, highlighting the latest achievements. Given the great application potential of these natural compounds, novel approaches to dietary interventions and oral disease treatments may emerge. Moreover, investigating polyphenols combined with different materials presents promising opportunities for developing innovative therapeutic strategies in the treatment of oral diseases.
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Affiliation(s)
- Yuanyuan Guo
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China;
- Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Zhiquan Li
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, DK-2200 Copenhagen, Denmark;
| | - Feng Chen
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Yujuan Chai
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China;
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19
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Silva E, Teixeira JA, Pereira MO, Rocha CMR, Sousa AM. Evolving biofilm inhibition and eradication in clinical settings through plant-based antibiofilm agents. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 119:154973. [PMID: 37499434 DOI: 10.1016/j.phymed.2023.154973] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 07/05/2023] [Accepted: 07/15/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND After almost 100 years since evidence of biofilm mode of growth and decades of intensive investigation about their formation, regulatory pathways and mechanisms of antimicrobial tolerance, nowadays there are still no therapeutic solutions to eradicate bacterial biofilms and their biomedical related issues. PURPOSE This review intends to provide a comprehensive summary of the recent and most relevant published studies on plant-based products, or their isolated compounds with antibiofilm activity mechanisms of action or identified molecular targets against bacterial biofilms. The objective is to offer a new perspective of most recent data for clinical researchers aiming to prevent or eliminate biofilm-associated infections caused by bacterial pathogens. METHODS The search was performed considering original research articles published on PubMed, Web of Science and Scopus from 2015 to April 2023, using keywords such as "antibiofilm", "antivirulence", "phytochemicals" and "plant extracts". RESULTS Over 180 articles were considered for this review with a focus on the priority human pathogens listed by World Health Organization, including Pseudomonas aeruginosa, Staphylococcus aureus, Klebsiella pneumoniae and Escherichia coli. Inhibition and detachment or dismantling of biofilms formed by these pathogens were found using plant-based extract/products or derivative compounds. Although combination of plant-based products and antibiotics were recorded and discussed, this topic is currently poorly explored and only for a reduced number of bacterial species. CONCLUSIONS This review clearly demonstrates that plant-based products or derivative compounds may be a promising therapeutic strategy to eliminate bacterial biofilms and their associated infections. After thoroughly reviewing the vast amount of research carried out over years, it was concluded that plant-based products are mostly able to prevent biofilm formation through inhibition of quorum sensing signals, but also to disrupt mature biofilms developed by multidrug resistant bacteria targeting the biofilm extracellular polymeric substance. Flavonoids and phenolic compounds seemed the most effective against bacterial biofilms.
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Affiliation(s)
- Eduarda Silva
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - José A Teixeira
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal; LABBELS - Associate Laboratory, Guimarães, Braga, Portugal
| | - Maria Olivia Pereira
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal; LABBELS - Associate Laboratory, Guimarães, Braga, Portugal
| | - Cristina M R Rocha
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal; LABBELS - Associate Laboratory, Guimarães, Braga, Portugal
| | - Ana Margarida Sousa
- Centre of Biological Engineering, LIBRO - Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal; LABBELS - Associate Laboratory, Guimarães, Braga, Portugal.
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20
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Choroszy-Król I, Futoma-Kołoch B, Kuźnik K, Wojnicz D, Tichaczek-Goska D, Frej-Mądrzak M, Jama-Kmiecik A, Sarowska J. Exposing Salmonella Senftenberg and Escherichia coli Strains Isolated from Poultry Farms to Formaldehyde and Lingonberry Extract at Low Concentrations. Int J Mol Sci 2023; 24:14579. [PMID: 37834022 PMCID: PMC10572950 DOI: 10.3390/ijms241914579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023] Open
Abstract
European Union (EU) countries strive to improve the quality and safety of food of animal origin. Food production depends on a good microbiological quality of fodder. However, feed can be a reservoir or vector of pathogenic microorganisms, including Salmonella or Escherichia coli bacteria. Salmonella spp. and E. coli are the two most important food-borne pathogens of public health concern. Contamination with these pathogens, mainly in the poultry sector, can lead to serious food-borne diseases. Both microorganisms can form biofilms on abiotic and biotic surfaces. The cells that form biofilms are less sensitive to disinfectants, which in turn makes it difficult to eliminate them from various surfaces. Because the usage of formaldehyde in animal feed is prohibited in European countries, the replacement of this antibacterial with natural plant products seems very promising. This study aimed to assess the inhibitory effectiveness of Vaccinium vitis-idaea extract against biofilm produced by model Salmonella enterica and E. coli strains. We found that formaldehyde could effectively kill both species of bacterial cells in biofilm, while the lingonberry extract showed some antibiofilm effect on S. enterica serovar Senftenberg. In conclusion, finding natural plant products that are effective against biofilms formed by Gram-negative bacteria is still challenging.
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Affiliation(s)
- Irena Choroszy-Król
- Department of Basic Sciences, Faculty of Health Sciences, Wrocław Medical University, Chałubińskiego 4, 50-368 Wroclaw, Poland; (I.C.-K.); (M.F.-M.); (A.J.-K.); (J.S.)
| | - Bożena Futoma-Kołoch
- Department of Microbiology, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63–77, 51-148 Wroclaw, Poland;
| | - Klaudia Kuźnik
- Department of Microbiology, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63–77, 51-148 Wroclaw, Poland;
| | - Dorota Wojnicz
- Department of Biology and Medical Parasitology, Faculty of Medicine, Wrocław Medical University, Mikulicza-Radeckiego 9, 50-345 Wroclaw, Poland; (D.W.); (D.T.-G.)
| | - Dorota Tichaczek-Goska
- Department of Biology and Medical Parasitology, Faculty of Medicine, Wrocław Medical University, Mikulicza-Radeckiego 9, 50-345 Wroclaw, Poland; (D.W.); (D.T.-G.)
| | - Magdalena Frej-Mądrzak
- Department of Basic Sciences, Faculty of Health Sciences, Wrocław Medical University, Chałubińskiego 4, 50-368 Wroclaw, Poland; (I.C.-K.); (M.F.-M.); (A.J.-K.); (J.S.)
| | - Agnieszka Jama-Kmiecik
- Department of Basic Sciences, Faculty of Health Sciences, Wrocław Medical University, Chałubińskiego 4, 50-368 Wroclaw, Poland; (I.C.-K.); (M.F.-M.); (A.J.-K.); (J.S.)
| | - Jolanta Sarowska
- Department of Basic Sciences, Faculty of Health Sciences, Wrocław Medical University, Chałubińskiego 4, 50-368 Wroclaw, Poland; (I.C.-K.); (M.F.-M.); (A.J.-K.); (J.S.)
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21
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Touzout SN, Merghni A, Laouani A, Boukhibar H, Alenazy R, Alobaid A, Alenazy M, Ben-Attia M, Saguem K, El-Bok S. Antibacterial Properties of Methanolic Leaf Extracts of Melia azedarach L. against Gram-Positive and Gram-Negative Pathogenic Bacteria. Microorganisms 2023; 11:2062. [PMID: 37630622 PMCID: PMC10457991 DOI: 10.3390/microorganisms11082062] [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: 06/27/2023] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Melia azedarach L., a Meliaceae family tree, is widely used in traditional folkloric medicine for its pharmaceutical properties. In the present study, we investigated the phytochemical composition of four methanolic leaf extracts of M. azedarach of various origins (Algeria and Tunisia) using high-performance liquid chromatography (HPLC). The antibacterial efficacy and mechanisms of action against Gram-positive and Gram-negative pathogenic microorganisms were then evaluated. Our findings revealed a presence of phenolic acids and flavonoids, such as gallic acid, chlorogenic acid, caffeic acid, hyperoside, isoquercetin, quercetin, and isorhamnetin both in Algerian and Tunisian localities, with an abundance of phenolic acids compared to flavonoids. Additionally, the studied extracts exhibit a broad spectrum of antibacterial activities, with MIC values ranging from 31.25 mg/mL to 125 mg/mL. Methanolic leaf extracts of M. azedarach from Algeria exhibited more potent biofilm eradication, with a percentage of inhibition reaching 72.17% against the S. aureus strain. Furthermore, inhibitory concentrations of tested substances, particularly the extract from the Relizane area, were capable of disrupting the membrane integrity of the treated bacteria as well as producing oxidative stress through ROS generation. Likewise, our results reveal that plant extract induces lipid peroxidation by raising MDA levels in comparison to untreated cells, particularly with the plant extract of Blida. M. azedarach extracts also reduced the synthesis of antioxidant enzymes (CAT and SOD). Our findings illustrate that M. azedarach remains a plant with significant antibacterial potential and distinct mechanisms of action that are closely related to the origins of this specimen.
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Affiliation(s)
- Soraya Naila Touzout
- Laboratory of Biodiversity, Biotechnologies and Climate Change (LR11/ES09), Faculty of Sciences of Tunis, University of Tunis El-Manar, Tunis 2092, Tunisia; (S.N.T.); (H.B.); (S.E.-B.)
| | - Abderrahmen Merghni
- Laboratory of Antimicrobial Resistance LR99ES09, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1007, Tunisia
| | - Aicha Laouani
- Laboratory of Metabolic Biophysics and Applied Pharmacology, Faculty of Medicine of Sousse, University of Sousse, Sousse 4002, Tunisia; (A.L.); (K.S.)
- USCR Analytical Platform UHPLC-MS &Research in Medicine and Biology, Faculty of Medicine of Sousse, University of Sousse, Sousse 4002, Tunisia
| | - Halima Boukhibar
- Laboratory of Biodiversity, Biotechnologies and Climate Change (LR11/ES09), Faculty of Sciences of Tunis, University of Tunis El-Manar, Tunis 2092, Tunisia; (S.N.T.); (H.B.); (S.E.-B.)
| | - Rawaf Alenazy
- Department of Medical Laboratory, College of Applied Medical Sciences-Shaqra, Shaqra University, Shaqra 11961, Saudi Arabia
| | - Abdulmohsen Alobaid
- Department of Medical Laboratory, Aliman General Hospital-Riyadh, Ministry of Health, Riyadh 12684, Saudi Arabia;
| | | | - Mossadok Ben-Attia
- Environment Biomonitoring Laboratory (LR01/ES14), Faculty of Sciences of Bizerte, University of Carthage, Zarzouna 7021, Tunisia;
| | - Khaled Saguem
- Laboratory of Metabolic Biophysics and Applied Pharmacology, Faculty of Medicine of Sousse, University of Sousse, Sousse 4002, Tunisia; (A.L.); (K.S.)
- USCR Analytical Platform UHPLC-MS &Research in Medicine and Biology, Faculty of Medicine of Sousse, University of Sousse, Sousse 4002, Tunisia
| | - Safia El-Bok
- Laboratory of Biodiversity, Biotechnologies and Climate Change (LR11/ES09), Faculty of Sciences of Tunis, University of Tunis El-Manar, Tunis 2092, Tunisia; (S.N.T.); (H.B.); (S.E.-B.)
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22
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Moyo AA, Jagadhane KS, Bhosale SR, Patil DN, Shimpale VB, Anbhule PV. Phytochemical Profiling, Antimicrobial, Antiproliferative and Apoptotic Effects of Stemodia viscosa Roxb. of Western Ghats Region, India. Chem Biodivers 2023; 20:e202300332. [PMID: 37461844 DOI: 10.1002/cbdv.202300332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
The present study shows the chemical profile, antimicrobial, antiproliferative, and apoptotic effects of Stemodia viscosa extracts. Thirteen bioactive compounds were identified in the 80 % ethanolic extract by GC/MS analysis. The acetone extract exhibited a higher content of flavonoids and phenols of 805.10 μg QE/mg DW and 89.31 μg GAE/mg DW extracts, respectively. Furthermore, the acetone extract possessed the highest antioxidant activity (IC50 =9.96 μg/mL). The 80 % ethanolic extract exhibited significant antimicrobial activity; the highest activity was observed against Staphylococcus aureus with a zone of inhibition of 25±0.51 mm, MIC value of 4 mg/mL, and MBC value of 8 mg/mL. The antiproliferative results revealed the presence of anticancer activity with an IC50 =91.562 and 74.362 μg/mL against the B16F10 skin and COLO205 colon cancer cells, respectively. The flow cytometric analysis shows that the plant extracts cause cancer cell death through the induction of apoptosis. Our findings confirmed that Stemodia viscosa is a potential source of biologically active compounds.
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Affiliation(s)
- Alfredi A Moyo
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, 416004, Maharashtra-India
| | - Kishor S Jagadhane
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, 416004, Maharashtra-India
| | - Sneha R Bhosale
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, 416004, Maharashtra-India
| | - Devashree N Patil
- Department of Biotechnology, Shivaji University, Kolhapur, India-, 416004, Maharashtra-India
| | - Vinod B Shimpale
- Department of Botany, The New College, Kolhapur, 416004, Maharashtra-India
| | - Prashant V Anbhule
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, 416004, Maharashtra-India
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23
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Bueno-Silva B, Kiausinus KR, Gonçalves FJDS, Moreira MVC, de Oliveira EG, Brugnera Junior A, Feres M, Figueiredo LC. Antimicrobial activity of Desplac® oral gel in the subgingival multispecies biofilm formation. Front Microbiol 2023; 14:1122051. [PMID: 37260680 PMCID: PMC10227524 DOI: 10.3389/fmicb.2023.1122051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/04/2023] [Indexed: 06/02/2023] Open
Abstract
Natural products are well-known due to their antimicrobial properties. This study aimed to evaluate the antimicrobial effect of Desplac® product (composed of Aloe Vera, Propolis Extract, Green Tea, Cranberry, and Calendula) on the subgingival biofilm. Two different protocols were used to treat the 33-species biofilms: (A) 2×/day (12/12 h) for 1 min with Desplac® or Noplak Toothpaste (Chlorhexidine + Cetylpyridinium Chloride) or Oral B ProGengiva (stannous Fluoride) or a placebo gel; (B) a 12-h use of the Desplac® product or 0.12% chlorhexidine gel or a placebo gel. After 7 days of biofilm formation, the metabolic activity (MA) and biofilm profile were determined by 2,3,5-triphenyltetrazolium chloride and Checker-board DNA-DNA hybridization, respectively. Statistical analysis used the Kruskal-Wallis test followed by Dunn's post-hoc. In protocol A, all treatments presented reduced MA compared to the placebo (p ≤ 0.05). The Desplac®-treated biofilm showed a similar microbial profile to other antimicrobials, although with higher bacterial total counts. In protocol B, MA of Desplac®-treated biofilms was lower than the placebo's MA but higher than chlorhexidine-treated biofilms (p ≤ 0.05). Pathogen levels in Desplac®-treated biofilms were lower than in placebo-treated biofilms and elevated compared to the chlorhexidine-treated biofilms (p ≤ 0.05). Desplac® inhibited the biofilm development and disrupted the mature subgingival biofilm, highlighting its effect on Tannerella forsythia counts.
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Affiliation(s)
| | | | | | | | | | - Aldo Brugnera Junior
- Education College of the European Master in Oral Laser Application (EMDOLA), University of Liège, Liège, Belgium
- Research Collaborator at the IFSC-University of São Paulo (USP), São Paulo, Brazil
| | - Magda Feres
- Dental Research Division, Guarulhos University, Guarulhos, Brazil
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24
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Saha S, Do T, Maycock J, Wood S, Boesch C. Antibiofilm Efficacies of Flavonoid-Rich Sweet Orange Waste Extract against Dual-Species Biofilms. Pathogens 2023; 12:pathogens12050657. [PMID: 37242327 DOI: 10.3390/pathogens12050657] [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: 04/04/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
The current study evaluated the antibacterial properties of industrial sweet orange waste extracts (ISOWEs), which are a rich source of flavonoids. The ISOWEs exhibited antibacterial activity towards the dental cariogenic pathogens Streptococcus mutans and Lactobacillus casei with 13.0 ± 2.0 and 20.0 ± 2.0 mg/mL for MIC (minimum inhibitory concentration) and 37.7 ± 1.5 and 43.3 ± 2.1 mg/mL for MBC (minimum bactericidal concentration), respectively. When evaluated in a 7-day dual-species oral biofilm model, ISOWEs dose-dependently reduced the viable bacteria count, and demonstrated strong synergistic effects when combined with the anti-septic chlorhexidine (at 0.1 and 0.2%). Similarly, confocal microscopy confirmed the anti-cariogenic properties of ISOWEs, alone and in combination with chlorhexidine. The citrus flavonoids contributed differently to these effects, with the flavones (nobiletin, tangeretin and sinensetin) demonstrating significantly lower MICs and MBCs compared to the flavanones hesperidin and narirutin. In conclusion, our study demonstrated the potential of citrus waste as a currently underutilised source of flavonoids for antimicrobial applications, such as in dental health.
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Affiliation(s)
- Suvro Saha
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
- School of Dentistry, Division of Oral Biology, Faculty of Medicine & Health, University of Leeds, Leeds LS2 9LU, UK
| | - Thuy Do
- School of Dentistry, Division of Oral Biology, Faculty of Medicine & Health, University of Leeds, Leeds LS2 9LU, UK
| | - Joanne Maycock
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
| | - Simon Wood
- School of Dentistry, Division of Oral Biology, Faculty of Medicine & Health, University of Leeds, Leeds LS2 9LU, UK
| | - Christine Boesch
- School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds LS2 9JT, UK
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25
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Skadiņš I, Labsvārds KD, Grava A, Amirian J, Tomsone LE, Ruško J, Viksna A, Bandere D, Brangule A. Antimicrobial and Antibiofilm Properties of Latvian Honey against Causative Agents of Wound Infections. Antibiotics (Basel) 2023; 12:antibiotics12050816. [PMID: 37237718 DOI: 10.3390/antibiotics12050816] [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: 04/01/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Honey is widely used in traditional medicine and modern wound healing biomaterial research as a broad-spectrum antimicrobial, anti-inflammatory and antioxidant agent. The study's objectives were to evaluate the antibacterial activity and polyphenolic profiles of 40 monofloral honey samples collected from beekeepers in the territory of Latvia. The antimicrobial and antifungal activity of Latvian honey samples were compared with commercial Manuka honey and the honey analogue sugar solutions-carbohydrate mixture and tested against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, clinical isolates Extended-Spectrum Beta-Lactamases produced Escherichia coli, Methicillin-resistant Staphylococcus aureus and Candida albicans. Antimicrobial activity was evaluated with the well-diffusion method (80% honey solution w/v) and microdilution method. The honey samples with the highest antimicrobial potential were tested to prevent biofilm development and activity against a preformed biofilm. The principal component analysis of the antimicrobial properties of honey samples vs. polyphenolic profile was performed. Eleven honey samples exhibited antibacterial activity to all investigated bacteria. The antibacterial effect of the samples was most significant on the Gram-positive bacteria compared to the studied Gram-negative bacteria. Latvian honey presents promising potential for use in wound healing biomaterials, opening the possibility of achieving long-term antibacterial effects.
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Affiliation(s)
- Ingus Skadiņš
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1658 Riga, Latvia
- Department of Biology and Microbiology, Riga Stradiņš University, LV-1007 Riga, Latvia
| | - Krišs Dāvids Labsvārds
- Faculty of Chemistry, University of Latvia, LV-1004 Riga, Latvia
- Institute of Food Safety, Animal Health and Environment "BIOR", LV-1076 Riga, Latvia
| | - Andra Grava
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, LV-1007 Riga, Latvia
| | - Jhaleh Amirian
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1658 Riga, Latvia
- Department of Pharmaceutical Chemistry, Riga Stradiņš University, LV-1007 Riga, Latvia
| | - Laura Elīna Tomsone
- Institute of Food Safety, Animal Health and Environment "BIOR", LV-1076 Riga, Latvia
| | - Jānis Ruško
- Institute of Food Safety, Animal Health and Environment "BIOR", LV-1076 Riga, Latvia
| | - Arturs Viksna
- Faculty of Chemistry, University of Latvia, LV-1004 Riga, Latvia
| | - Dace Bandere
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1658 Riga, Latvia
- Department of Pharmaceutical Chemistry, Riga Stradiņš University, LV-1007 Riga, Latvia
| | - Agnese Brangule
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1658 Riga, Latvia
- Department of Pharmaceutical Chemistry, Riga Stradiņš University, LV-1007 Riga, Latvia
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26
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Wójciak M, Feldo M, Stolarczyk P, Płachno BJ. Biological Potential of Carnivorous Plants from Nepenthales. Molecules 2023; 28:molecules28083639. [PMID: 37110873 PMCID: PMC10146735 DOI: 10.3390/molecules28083639] [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: 04/05/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
Since Charles Darwin and his book carnivorous plants have aroused interest and heated debate. In addition, there is growing interest in this group of plants as a source of secondary metabolites and in the application of their biological activity. The aim of this study was to trace the recent literature in search of the application of extracts obtained from families Droseraceae, Nepenthaceae, and Drosophyllaceae to show their biological potential. The data collected in the review clearly indicate that the studied Nepenthales species have great biological potential in terms of antibacterial, antifungal, antioxidant, anti-inflammatory, and anticancer use. We proposed that further investigations should include: (i) bioactivity-guided investigations of crude plant extract to connect a particular type of action with a specific compound or a group of metabolites; (ii) a search for new bioactive properties of carnivorous plants; (iii) establishment of molecular mechanisms associated with specific activity. Furthermore, further research should be extended to include less explored species, i.e., Drosophyllum lusitanicum and especially Aldrovanda vesiculosa.
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Affiliation(s)
- Magdalena Wójciak
- Department of Analytical Chemistry, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland
| | - Marcin Feldo
- Chair and Department of Vascular Surgery and Angiology, Medical University of Lublin, 11 Staszica St., 20-081 Lublin, Poland
| | - Piotr Stolarczyk
- Department of Botany, Physiology and Plant Protection, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, 29 Listopada 54 Ave., 31-425 Cracow, Poland
| | - Bartosz J Płachno
- Department of Plant Cytology and Embryology, Institute of Botany, Faculty of Biology, Jagiellonian University in Kraków, 9 Gronostajowa St., 30-387 Cracow, Poland
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27
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Villanueva X, Zhen L, Ares JN, Vackier T, Lange H, Crestini C, Steenackers HP. Effect of chemical modifications of tannins on their antimicrobial and antibiofilm effect against Gram-negative and Gram-positive bacteria. Front Microbiol 2023; 13:987164. [PMID: 36687646 PMCID: PMC9853077 DOI: 10.3389/fmicb.2022.987164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 11/18/2022] [Indexed: 01/08/2023] Open
Abstract
Background Tannins have demonstrated antibacterial and antibiofilm activity, but there are still unknown aspects on how the chemical properties of tannins affect their biological properties. We are interested in understanding how to modulate the antibiofilm activity of tannins and in delineating the relationship between chemical determinants and antibiofilm activity. Materials and methods The effect of five different naturally acquired tannins and their chemical derivatives on biofilm formation and planktonic growth of Salmonella Typhimurium, Pseudomonas aeruginosa, Escherichia coli and Staphylococcus aureus was determined in the Calgary biofilm device. Results Most of the unmodified tannins exhibited specific antibiofilm activity against the assayed bacteria. The chemical modifications were found to alter the antibiofilm activity level and spectrum of the tannins. A positive charge introduced by derivatization with higher amounts of ammonium groups shifted the anti-biofilm spectrum toward Gram-negative bacteria, and derivatization with lower amounts of ammonium groups and acidifying derivatization shifted the spectrum toward Gram-positive bacteria. Furthermore, the quantity of phenolic OH-groups per molecule was found to have a weak impact on the anti-biofilm activity of the tannins. Conclusion We were able to modulate the antibiofilm activity of several tannins by specific chemical modifications, providing a first approach for fine tuning of their activity and antibacterial spectrum.
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Affiliation(s)
- Xabier Villanueva
- Faculty of Bioscience Engineering, Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Heverlee, Belgium
| | - Lili Zhen
- Department of Chemical Science and Technologies, University of Rome ‘Tor Vergata’, Rome, Italy,CSGI – Center for Colloid and Surface Science, Sesto Fiorentino, Italy
| | - José Nunez Ares
- Division of Mechatronics, Biostatistics and Sensors (MeBioS), Department of Biosystems (BIOSYST), KU Leuven, Heverlee, Belgium
| | - Thijs Vackier
- Faculty of Bioscience Engineering, Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Heverlee, Belgium
| | - Heiko Lange
- CSGI – Center for Colloid and Surface Science, Sesto Fiorentino, Italy,Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
| | - Claudia Crestini
- CSGI – Center for Colloid and Surface Science, Sesto Fiorentino, Italy,Department of Molecular Science and Nanosystems, Ca’ Foscari University of Venice, Venice, Italy
| | - Hans P. Steenackers
- Faculty of Bioscience Engineering, Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Heverlee, Belgium,*Correspondence: Hans P. Steenackers,
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28
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Salim A, Deiana P, Fancello F, Molinu MG, Santona M, Zara S. Antimicrobial and Antibiofilm Activities of Pomegranate Peel Phenolic Compounds: Varietal Screening Through a Multivariate Approach. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2023. [DOI: 10.1016/j.jobab.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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29
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Kováč J, Slobodníková L, Trajčíková E, Rendeková K, Mučaji P, Sychrová A, Bittner Fialová S. Therapeutic Potential of Flavonoids and Tannins in Management of Oral Infectious Diseases-A Review. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010158. [PMID: 36615352 PMCID: PMC9821998 DOI: 10.3390/molecules28010158] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/18/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Medicinal plants are rich sources of valuable molecules with various profitable biological effects, including antimicrobial activity. The advantages of herbal products are their effectiveness, relative safety based on research or extended traditional use, and accessibility without prescription. Extensive and irrational usage of antibiotics since their discovery in 1928 has led to the increasing expiration of their effectiveness due to antibacterial resistance. Now, medical research is facing a big and challenging mission to find effective and safe antimicrobial therapies to replace inactive drugs. Over the years, one of the research fields that remained the most available is the area of natural products: medicinal plants and their metabolites, which could serve as active substances to fight against microbes or be considered as models in drug design. This review presents selected flavonoids (such as apigenin, quercetin, kaempferol, kurarinone, and morin) and tannins (including oligomeric proanthocyanidins, gallotannins, ellagitannins, catechins, and epigallocatechin gallate), but also medicinal plants rich in these compounds as potential therapeutic agents in oral infectious diseases based on traditional usages such as Agrimonia eupatoria L., Hamamelis virginiana L., Matricaria chamomilla L., Vaccinium myrtillus L., Quercus robur L., Rosa gallica L., Rubus idaeus L., or Potentilla erecta (L.). Some of the presented compounds and extracts are already successfully used to maintain oral health, as the main or additive ingredient of toothpastes or mouthwashes. Others are promising for further research or future applications.
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Affiliation(s)
- Ján Kováč
- Department of Stomatology and Maxillofacial Surgery, Faculty of Medicine, Comenius University in Bratislava, Heydukova 10, 812 50 Bratislava, Slovakia
- Department of Stomatology and Maxillofacial Surgery, St. Elizabeth’s Hospital, Heydukova 10, 812 50 Bratislava, Slovakia
| | - Lívia Slobodníková
- Institute of Microbiology, Faculty of Medicine and the University Hospital in Bratislava, Comenius University in Bratislava, Sasinkova 4, 811 08 Bratislava, Slovakia
| | - Eva Trajčíková
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia
| | - Katarína Rendeková
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia
| | - Pavel Mučaji
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia
| | - Alice Sychrová
- Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Palackého 1946/1, 612 00 Brno, Czech Republic
| | - Silvia Bittner Fialová
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia
- Correspondence: ; Tel.: +421-250-117-206
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Novel Dental Restorative Solutions for Natural Teeth and Implants. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9120772. [PMID: 36550979 PMCID: PMC9774112 DOI: 10.3390/bioengineering9120772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
The long-term survival of restorations in the oral cavity has always been one of the most significant challenges in modern dental practice [...].
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Salem MA, Salama MM, Ezzat SM, Hashem YA. Comparative metabolite profiling of four polyphenol rich Morus leaves extracts in relation to their antibiofilm activity against Enterococcus faecalis. Sci Rep 2022; 12:20168. [PMID: 36424446 PMCID: PMC9691725 DOI: 10.1038/s41598-022-24382-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 11/15/2022] [Indexed: 11/27/2022] Open
Abstract
Enterococci are a common cause of urinary tract infections. The severity of enterococcal infections is associated with their ability to form biofilms. Morus leaves are known as a natural antibacterial, however, their antibiofilm activity against Enterococcus remains unveiled. This study aimed to evaluate the ability of four polyphenol-rich Morus leaves extracts (Morus nigra, M. rubra, M. macroura, and M. alba) to inhibit biofilm formed by enterococcal clinical isolates in relation to their metabolic profiling. Results revealed that 48% of the isolates formed strong biofilm, 28% formed moderate biofilm, 20% formed weak biofilm, and only 4% did not form a biofilm. The strong biofilm-forming isolates were E. faecalis, and hence were chosen for this study. The antibiofilm activity of the four polyphenol-rich Morus leaves extracts revealed that the M. nigra extract exhibited the highest percentage of biofilm inhibition followed by M. rubra then M. macroura and the least inhibition was detected in M. alba, and these results were in accordance with the phenolic and flavonoid contents of each extract. UPLC-ESI-MS/MS identified 61 polyphenolic compounds in the four extracts. Further, multivariate analysis confirmed clear segregation of M. nigra from the other species suggesting disparity in its metabolome, with accumulation of flavonoids, anthocyanidins, phenolic acids and coumarin derivatives. Quercetin and kaempferol glycosides were found to be positively and significantly correlated to the antibiofilm activity. In conclusion, M. nigra ethanolic extracts showed the highest phenolic content and antibiofilm activity and they could be developed as a complementary treatment for the development of antimicrobial agents.
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Affiliation(s)
- Mohamed A. Salem
- grid.411775.10000 0004 0621 4712Department of Pharmacognosy and Natural Products, Faculty of Pharmacy, Menoufia University, Gamal Abd El Nasr St., Shibin Elkom, 32511 Menoufia Egypt
| | - Maha M. Salama
- grid.7776.10000 0004 0639 9286Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr El-Aini St, Cairo, 11562 Egypt ,grid.440862.c0000 0004 0377 5514Department of Pharmacognosy, Faculty of Pharmacy, The British University in Egypt, Suez Desert Road, El Sherouk City, Cairo, 11837 Egypt
| | - Shahira M. Ezzat
- grid.7776.10000 0004 0639 9286Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr El-Aini St, Cairo, 11562 Egypt ,grid.442760.30000 0004 0377 4079Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 12451 Egypt
| | - Yomna A. Hashem
- grid.440862.c0000 0004 0377 5514Department of Microbiology, Faculty of Pharmacy, The British University in Egypt, Suez Desert Road, El Sherouk City, Cairo, 11837 Egypt
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Jiang Q, Charoensiddhi S, Xue X, Sun B, Liu Y, El-Seedi HR, Wang K. A review on the gastrointestinal protective effects of tropical fruit polyphenols. Crit Rev Food Sci Nutr 2022; 63:7197-7223. [PMID: 36397724 DOI: 10.1080/10408398.2022.2145456] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Tropical fruits are popular because of their unique, delicious flavors and good nutritional value. Polyphenols are considered to be the main bioactive ingredients in tropical fruits, and these exert a series of beneficial effects on the human gastrointestinal tract that can enhance intestinal health and prevent intestinal diseases. Moreover, they are distinct from the polyphenols in fruits grown in other geographical zones. Thus, the comprehensive effects of polyphenols in tropical fruits on gut health warrant in-depth review. This article reviews, first, the biological characteristics of several representative tropical fruits, including mango, avocado, noni, cashew apple, passion fruit and lychee; second, the types and content of the main polyphenols in these tropical fruits; third, the effects of each of these fruit polyphenols on gastrointestinal health; and, fourth, the protective mechanism of polyphenols. Polyphenols and their metabolites play a crucial role in the regulation of the gut microbiota, increasing intestinal barrier function, reducing oxidative stress, inhibiting the secretion of inflammatory factors and regulating immune function. Thus, review highlights the value of tropical fruits, highlighting their significance for future research on their applications as functional foods that are oriented to gastrointestinal protection.
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Affiliation(s)
- Qianer Jiang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Suvimol Charoensiddhi
- Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok, Thailand
| | - Xiaofeng Xue
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Biqi Sun
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Yang Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Hesham R El-Seedi
- Department of Pharmaceutical Biosciences, Uppsala University, Biomedical Centre, Uppsala, Sweden
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
| | - Kai Wang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
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Antibiofilm Activity of Sundew Species against Multidrug-Resistant Escherichia coli Strains. Int J Mol Sci 2022; 23:ijms232213720. [PMID: 36430196 PMCID: PMC9697453 DOI: 10.3390/ijms232213720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
Species of the genus Drosera, known for carnivorous plants, such as sundew, have been traditionally used for centuries as medicinal plants. Efficacy-determining compounds are naphthoquinones and flavonoids. Flavonoids possess a broad spectrum of bioactive properties, including biofilm inhibitory activity. Biofilms render antibiotics ineffective, contributing to the current rise in antimicrobial resistance. In this study, the biofilm inhibitory activity of two European sundew species (Drosera rotundifolia and Drosera intermedia) grown agriculturally in Germany and four commercial sundew products (declared as Drosera longifolia, Drosera sp. and Drosera planta trit.) against three multidrug-resistant Escherichia coli strains was tested. The aim of the study was to comparatively investigate the biofilm inhibitory potential of sundew species extracts grown locally in northern Germany and commercial sundew products. The minimum biofilm inhibitory concentration of the European sundew species was approx. 35 µg mL-1. In comparison, commercial sundew products ranged in concentration from 75 to 140 µg mL-1. Additionally, individual compounds isolated from European sundew were tested. Among these compounds, biofilm inhibitory activity was determined for four of the eight substances, with 2″-O-galloyl hyperoside standing out for its activity (38 µg mL-1). The whole plant extracts of Drosera rotundifolia and Drosera intermedia proved to be more effective than the commercial products and the single compounds in its biofilm inhibition activity against Escherichia coli strains. Sundew extracts may serve as a potential therapeutic approach for targeting biofilm production.
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Alfhili MA, Ahmad I, Alraey Y, Alangari A, Alqahtani T, Dera AA. Antibacterial and anti-biofilm activity of plumbagin against multi-drug resistant clinical bacterial isolates. Saudi Med J 2022; 43:1224-1233. [PMID: 36379534 PMCID: PMC10043915 DOI: 10.15537/smj.2022.43.11.20220446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023] Open
Abstract
OBJECTIVES To evaluate the antibacterial activity of plumbagin (PGN) against multidrug resistance (MDR) clinical isolates. METHODS This study was carried out at the Department of Clinical Lab Sciences, King Khalid University from October 6, 2021 to December 14, 2021. We investigated the antibacterial and anti-virulence activity of PGN against MDR Gram-negative (Escherichia coli, Klebsiella pneumoniae, Salmonella Typhi, and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus [S. aureus], Staphylococcus saprophyticus [S. saprophyticus], Streptococcus pyogenes, and Enterococcus faecalis) clinical bacterial isolates. Agar well diffusion, microdilution assay, colony count method, biofilm formation, and time-kill kinetics were employed to probe the MIC, MBC, and anti-virulence activity of PGN. RESULTS Plumbagin inhibited the growth of all tested isolates, with S. saprophyticus exhibiting the highest sensitivity. MIC values ranged from 0.029 to 0.117 µg/mL whereas MBC ranged from 0.235 to 0.94 µg/mL, with 79% to 99% growth inhibition. Moreover, all tested isolates showed a marked decrease in biofilm formation, with S. saprophyticus and S. aureus being the most sensitive. CONCLUSION Plumbagin is a stand-alone, broad spectrum antibacterial with promising potential against the rising threat of antimicrobial resistance.
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Affiliation(s)
- Mohammad A. Alfhili
- From the Chair of Medical and Molecular Genetics Research (Alfhili), Department of Clinical Laboratory Sciences, from the Department of Clinical Laboratory Sciences (Alangari), College of Applied Medical Sciences, King Saud University, Riyadh; from the Department of Clinical Laboratory Sciences (Ahmad, Alraey, Dera), College of Applied Medical Sciences, and from the Department of Pharmacology (Alqahtani), College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | - Irfan Ahmad
- From the Chair of Medical and Molecular Genetics Research (Alfhili), Department of Clinical Laboratory Sciences, from the Department of Clinical Laboratory Sciences (Alangari), College of Applied Medical Sciences, King Saud University, Riyadh; from the Department of Clinical Laboratory Sciences (Ahmad, Alraey, Dera), College of Applied Medical Sciences, and from the Department of Pharmacology (Alqahtani), College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | - Yasser Alraey
- From the Chair of Medical and Molecular Genetics Research (Alfhili), Department of Clinical Laboratory Sciences, from the Department of Clinical Laboratory Sciences (Alangari), College of Applied Medical Sciences, King Saud University, Riyadh; from the Department of Clinical Laboratory Sciences (Ahmad, Alraey, Dera), College of Applied Medical Sciences, and from the Department of Pharmacology (Alqahtani), College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | - Abdulaziz Alangari
- From the Chair of Medical and Molecular Genetics Research (Alfhili), Department of Clinical Laboratory Sciences, from the Department of Clinical Laboratory Sciences (Alangari), College of Applied Medical Sciences, King Saud University, Riyadh; from the Department of Clinical Laboratory Sciences (Ahmad, Alraey, Dera), College of Applied Medical Sciences, and from the Department of Pharmacology (Alqahtani), College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | - Taha Alqahtani
- From the Chair of Medical and Molecular Genetics Research (Alfhili), Department of Clinical Laboratory Sciences, from the Department of Clinical Laboratory Sciences (Alangari), College of Applied Medical Sciences, King Saud University, Riyadh; from the Department of Clinical Laboratory Sciences (Ahmad, Alraey, Dera), College of Applied Medical Sciences, and from the Department of Pharmacology (Alqahtani), College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | - Ayed A. Dera
- From the Chair of Medical and Molecular Genetics Research (Alfhili), Department of Clinical Laboratory Sciences, from the Department of Clinical Laboratory Sciences (Alangari), College of Applied Medical Sciences, King Saud University, Riyadh; from the Department of Clinical Laboratory Sciences (Ahmad, Alraey, Dera), College of Applied Medical Sciences, and from the Department of Pharmacology (Alqahtani), College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia.
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Yan D, Tajima H, Cline LC, Fong RY, Ottaviani JI, Shapiro H, Blumwald E. Genetic modification of flavone biosynthesis in rice enhances biofilm formation of soil diazotrophic bacteria and biological nitrogen fixation. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:2135-2148. [PMID: 35869808 PMCID: PMC9616522 DOI: 10.1111/pbi.13894] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/05/2022] [Accepted: 07/15/2022] [Indexed: 05/06/2023]
Abstract
Improving biological nitrogen fixation (BNF) in cereal crops is a long-sought objective; however, no successful modification of cereal crops showing increased BNF has been reported. Here, we described a novel approach in which rice plants were modified to increase the production of compounds that stimulated biofilm formation in soil diazotrophic bacteria, promoted bacterial colonization of plant tissues and improved BNF with increased grain yield at limiting soil nitrogen contents. We first used a chemical screening to identify plant-produced compounds that induced biofilm formation in nitrogen-fixing bacteria and demonstrated that apigenin and other flavones induced BNF. We then used CRISPR-based gene editing targeting apigenin breakdown in rice, increasing plant apigenin contents and apigenin root exudation. When grown at limiting soil nitrogen conditions, modified rice plants displayed increased grain yield. Biofilm production also modified the root microbiome structure, favouring the enrichment of diazotrophic bacteria recruitment. Our results support the manipulation of the flavone biosynthetic pathway as a feasible strategy for the induction of biological nitrogen fixation in cereals and a reduction in the use of inorganic nitrogen fertilizers.
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Affiliation(s)
- Dawei Yan
- Department of Plant SciencesUniversity of CaliforniaDavisCaliforniaUSA
| | - Hiromi Tajima
- Department of Plant SciencesUniversity of CaliforniaDavisCaliforniaUSA
| | | | - Reedmond Y. Fong
- Department of NutritionUniversity of CaliforniaDavisCaliforniaUSA
| | - Javier I. Ottaviani
- Department of NutritionUniversity of CaliforniaDavisCaliforniaUSA
- Mars Inc.McLeanVirginiaUSA
| | | | - Eduardo Blumwald
- Department of Plant SciencesUniversity of CaliforniaDavisCaliforniaUSA
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Biological Activity of Bark Extracts from Northern Red Oak (Quercus rubra L.): An Antioxidant, Antimicrobial and Enzymatic Inhibitory Evaluation. PLANTS 2022; 11:plants11182357. [PMID: 36145758 PMCID: PMC9503445 DOI: 10.3390/plants11182357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/05/2022] [Accepted: 09/07/2022] [Indexed: 11/16/2022]
Abstract
The northern red oak (Quercus rubra L.) is an ornamental oak species native to eastern America, being an invasive species in Europe, with increasing coverage. The aim of this work was to evaluate the biological potential of red oak bark extracts. Aqueous and ethanolic preparations were obtained by two extraction methods: ultrasonic-assisted extraction (UAE) and microwave assisted extraction (MAE). The total phenolic and tannin contents were measured using spectrophotometric methods. The antioxidant activity was evaluated by two complementary methods (DPPH and ABTS). Antimicrobial potential was tested against five bacteria and three Candida species, and the effect on biofilm formation and synergism with gentamicin was also evaluated. Finally, enzyme inhibitory properties were assessed for α-glucosidase, tyrosinase, and acetylcholinesterase. The results indicated a higher phenolic content for the extracts obtained through MAE, while UAE bark extracts were rich in tannins. All the extracts exhibited antioxidant, anti-glucosidase, and anti-tyrosinase activity, while the antibacterial potential was mostly observed for the MAE extracts, especially against S. aureus, C. parapsilopsis, and C. krusei; inhibition of biofilm formation was observed only for MRSA. These findings show that the red oak bark might be an important source of bioactive compounds with antioxidant and antimicrobial properties.
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Jailani A, Ahmed B, Lee JH, Lee J. Inhibition of Agrobacterium tumefaciens Growth and Biofilm Formation by Tannic Acid. Biomedicines 2022; 10:1619. [PMID: 35884920 PMCID: PMC9312696 DOI: 10.3390/biomedicines10071619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 12/04/2022] Open
Abstract
Agrobacterium tumefaciens underlies the pathogenesis of crown gall disease and is characterized by tumor-like gall formation on the stems and roots of a wide variety of economically important plant species. The bacterium initiates infection by colonizing and forming biofilms on plant surfaces, and thus, novel compounds are required to prevent its growth and biofilm formation. In this study, we investigated the ability of tannic acid, which is ubiquitously present in woody plants, to specifically inhibit the growth and biofilm formation of A. tumefaciens. Tannic acid showed antibacterial activity and significantly reduced the biofilm formation on polystyrene and on the roots of Raphanus sativus as determined by 3D bright-field and scanning electron microscopy (SEM) images. Furthermore, tannic acid dose-dependently reduced the virulence features of A. tumefaciens, which are swimming motility, exopolysaccharide production, protease production, and cell surface hydrophobicity. Transcriptional analysis of cells (Abs600 nm = 1.0) incubated with tannic acid for 24 h at 30 °C showed tannic acid most significantly downregulated the exoR gene, which is required for adhesion to surfaces. Tannic acid at 100 or 200 µg/mL limited the iron supply to A. tumefaciens and similarly reduced the biofilm formation to that performed by 0.1 mM EDTA. Notably, tannic acid did not significantly affect R. sativus germination even at 400 µg/mL. The findings of this study suggest that tannic acid has the potential to prevent growth and biofilm formation by A. tumefaciens and thus infections resulting from A. tumefaciens colonization.
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Affiliation(s)
| | | | | | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Korea; (A.J.); (B.A.); (J.-H.L.)
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Nowak A, Zagórska-Dziok M, Perużyńska M, Cybulska K, Kucharska E, Ossowicz-Rupniewska P, Piotrowska K, Duchnik W, Kucharski Ł, Sulikowski T, Droździk M, Klimowicz A. Assessment of the Anti-Inflammatory, Antibacterial and Anti-Aging Properties and Possible Use on the Skin of Hydrogels Containing Epilobium angustifolium L. Extracts. Front Pharmacol 2022; 13:896706. [PMID: 35846995 PMCID: PMC9284006 DOI: 10.3389/fphar.2022.896706] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Epilobium angustifolium L. is an ethnomedicinal plant known as a medicinal plant in many regions of the world, among others, in various skin diseases. Despite the great interest in this plant, there are still few reports of biological activity of ready-made dermatological or cosmetical preparations containing the E. angustifolium extracts. The antioxidant, anti-ageing, anti-inflammatory, antibacterial properties and toxicity, wound healing, and skin permeation of topical hydrogels containing E. angustifolium extracts (HEas) was assessed. First, the plant extracts were prepared using three solvents: 70% (v/v) ethanol, 70% (v/v) isopropanol and water, next by preparing hydrogels witch by dry extracts (HEa-EtOH), (HEa-iPrOH) and (HEa-WA), respectively. Finally, the content of selected phenolic acids in the HEas was evaluated by high-performance liquid chromatography (HPLC). All the HEas were characterized by high antioxidant activity. The most increased antibacterial activity was observed for a strain of Streptococcus pneumoniae ATCC 49619, Escherichia coli, Enterococcus faecalis ATCC 29212, Enterococcus faecium, Sarcina lutea ATCC 9341 and Bacillus pseudomycoides, while the strains of Streptococcus epidermidis, Bacillus subtilis, and Staphylococcus aureus were the least sensitive. All the HEas showed a reduction in the activity of lipoxygenase enzymes, proteases, and inhibition of protein denaturation. The HEa-EtOH and HEa-iPrOH also enhanced the wound healing activity of HDF cells. Additionally, in vitro penetration studies were performed using the Franz diffusion cells. These studies showed that the active ingredients contained in E. angustifolium penetrate through human skin and accumulate in it. Furthermore, the hydrogels containing E. angustifolium extracts showed a broad spectrum of activity. Therefore, they can be considered as an interesting alternative for dermatologic and cosmetic preparations.
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Affiliation(s)
- Anna Nowak
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Szczecin, Poland
- *Correspondence: Anna Nowak,
| | - Martyna Zagórska-Dziok
- Department of Technology of Cosmetic and Pharmaceutical Products, Medical College, University of Information Technology and Management in Rzeszow, Rzeszów, Poland
| | - Magdalena Perużyńska
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Krystyna Cybulska
- Department of Microbiology and Environmental Chemistry, Faculty of Environmental Management and Agriculture, West Pomeranian University of Technology, Szczecin, Poland
| | - Edyta Kucharska
- Department of Chemical Organic Technology and Polymeric Materials, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Poland
| | - Paula Ossowicz-Rupniewska
- Department of Chemical Organic Technology and Polymeric Materials, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Poland
| | - Katarzyna Piotrowska
- Department of Physiology, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Wiktoria Duchnik
- Department of Pharmaceutical Chemistry, Pomeranian Medical University, Szczecin, Poland
| | - Łukasz Kucharski
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Tadeusz Sulikowski
- Clinic of General Surgery, Minimally Invasive and Gastrointestinal, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Marek Droździk
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Adam Klimowicz
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Szczecin, Poland
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Kocovic A, Jeremic J, Bradic J, Sovrlic M, Tomovic J, Vasiljevic P, Andjic M, Draginic N, Grujovic M, Mladenovic K, Baskic D, Popovic S, Matic S, Zivkovic V, Jeremic N, Jakovljevic V, Manojlovic N. Phytochemical Analysis, Antioxidant, Antimicrobial, and Cytotoxic Activity of Different Extracts of Xanthoparmelia stenophylla Lichen from Stara Planina, Serbia. PLANTS (BASEL, SWITZERLAND) 2022; 11:1624. [PMID: 35807576 PMCID: PMC9269301 DOI: 10.3390/plants11131624] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
The aim of this study was to identify some of the secondary metabolites present in acetonic, methanolic, and hexanic extracts of lichen Xanthoparmelia stenophylla and to examine their antioxidant, antimicrobial, and cytotoxic activity. Compounds of the depsid structure of lecanoric acid, obtusic acid, and atranorin as well as usnic acid with a dibenzofuran structure were identified in the extracts by HPLC. The acetone extract was shown to have the highest total phenolic (167.03 ± 1.12 mg GAE/g) and total flavonoid content (178.84 ± 0.93 mg QE/g) as well as the best antioxidant activity (DPPH IC50 = 81.22 ± 0.54). However, the antimicrobial and antibiofilm tests showed the best activity of hexanic extract, especially against strains of B. cereus, B. subtilis, and S. aureus (MIC < 0.08, and 0.3125 mg/mL, respectively). Additionally, by using the MTT method, the acetonic extract was reported to exhibit a strong cytotoxic effect on the HeLa and HCT-116 cell lines, especially after 72 h (IC50 = 21.17 ± 1.85 and IC50 = 21.48 ± 3.55, respectively). The promising antioxidant, antimicrobial, and cytotoxic effects of Xanthoparmelia stenophylla extracts shown in the current study should be further investigated in vivo and under clinical conditions.
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Affiliation(s)
- Aleksandar Kocovic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Jovana Jeremic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Jovana Bradic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Miroslav Sovrlic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Jovica Tomovic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Perica Vasiljevic
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, 18000 Niš, Serbia;
| | - Marijana Andjic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Nevena Draginic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
- Department of Human Pathology, IM Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia;
| | - Mirjana Grujovic
- Department of Science, Institute for Information Technologies, University of Kragujevac, 34000 Kragujevac, Serbia; (M.G.); (K.M.)
| | - Katarina Mladenovic
- Department of Science, Institute for Information Technologies, University of Kragujevac, 34000 Kragujevac, Serbia; (M.G.); (K.M.)
| | - Dejan Baskic
- Centre for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (D.B.); (S.P.)
- Institute of Public Health Kragujevac, 34000 Kragujevac, Serbia
| | - Suzana Popovic
- Centre for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (D.B.); (S.P.)
| | - Sanja Matic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
| | - Vladimir Zivkovic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia;
| | - Nevena Jeremic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
- Faculty of Pharmacy, IM Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Vladimir Jakovljevic
- Department of Human Pathology, IM Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia;
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia;
| | - Nedeljko Manojlovic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia; (A.K.); (J.B.); (M.S.); (J.T.); (M.A.); (N.D.); (S.M.); (N.J.); (N.M.)
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Vaillancourt K, Ben Lagha A, Grenier D. Effects of a Berry Polyphenolic Fraction on the Pathogenic Properties of Porphyromonas gingivalis. FRONTIERS IN ORAL HEALTH 2022; 3:923663. [PMID: 35784661 PMCID: PMC9245044 DOI: 10.3389/froh.2022.923663] [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: 04/19/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
Porphyromonas gingivalis expresses a broad array of virulence factors that enable it to play a central role in the etiopathogenesis of periodontitis. The objective of the present study was to assess the effects of a berry polyphenolic fraction (Orophenol®) composed of extracts from cranberry, wild blueberry, and strawberry on the main pathogenic determinants of P. gingivalis. Orophenol® attenuated the growth of P. gingivalis and decreased its hemolytic activity, its adherence to a basement membrane matrix model, and its proteinase activities. The berry polyphenolic fraction also impaired the production of reactive oxygen species (ROS) by oral keratinocytes stimulated with P. gingivalis. Lastly, using an in vitro model of oral keratinocyte barrier, the fraction exerted a protective effect against the damages mediated by P. gingivalis. In conclusion, the berry polyphenolic fraction investigated in the present study attenuated several pathogenic properties of P. gingivalis. Although future clinical investigations are required, our study provided evidence that the polyphenols contained in this fraction may represent bioactive molecules of high interest for the prevention and/or treatment of periodontal disease.
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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 2022; 27:3536. [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 11/16/2022] Open
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.)
| | - 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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Antimicrobial, Multidrug Resistance Reversal and Biofilm Formation Inhibitory Effect of Origanum majorana Extracts, Essential Oil and Monoterpenes. PLANTS 2022; 11:plants11111432. [PMID: 35684205 PMCID: PMC9183178 DOI: 10.3390/plants11111432] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 12/12/2022]
Abstract
Origanum majorana L. is a widely used medicinal plant; its distilled oil and preparations are extensively utilised in the phytotherapy and food industries. The objective of this study is to evaluate the extracts and the essential oil (EO) of Origanum majorana L, and its monoterpenes for antimicrobial, bacterial multidrug resistance reversing, and biofilm formation inhibitory potency. The composition of EO and n-hexane extract was characterized by GC-MS. In the essential oil terpinen-4-ol (24.92%), trans-sabinene hydrate (25.18%), γ-terpinene (6.48%), cis-sabinene hydrate (5.44%), p-cymene (4.72%), sabinene (4.53%), α-terpineol (4.43%), and α-terpinene (3.00%) were found as the main constituents while trans-sabinene hydrate (1.43%), and terpinen-4-ol (0.19%) were detected in the n-hexane extract besides a series of hydrocarbons. The antibacterial activity of EO and terpinen-4-ol, α-terpinene, and linalool was also assessed against sensitive and drug-resistant S. aureus, and E. coli strains with MIC values of 0.125–0.250% and 30–61 µM, respectively. In the efflux pump (EP) inhibitory assay, made by the ethidium bromide accumulation method in E. coli ATCC 25922, and AG100 and S. aureus ATCC 25923, and MRSA ATCC 43300 strains, EO exhibited substantial activity, especially in the E. coli ATCC 25922 strain. Among the EO constituents, only sabinene was an EP inhibitor in sensitive Escherichia strain. In the case of S. aureus strains, EO and sabinene hydrate exhibited moderate potency on the drug-resistant phenotype. The antibiofilm effects of the samples were tested by crystal violet staining at sub-MIC concentration. γ-Terpinene, terpinen-4-ol, sabinene, sabinene hydrate and linalool were found to be effective inhibitors of biofilm formation (inhibition 36–86%) on E. coli ATCC 25922 and S. aureus MRSA ATCC 43300, while EO was ineffective on these strains. In contrast to this, biofilms formed by E. coli AG100 and S. aureus ATCC 25923 were significantly inhibited by the EO; however, it was not affected by any of the monoterpenes. This observation suggests that the antibiofilm effect might be altered by the synergism between the components of the essential oil.
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Phytochemical profiling, antibacterial and antioxidant properties of Crocus sativus flower: A comparison between tepals and stigmas. OPEN CHEM 2022. [DOI: 10.1515/chem-2022-0155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Abstract
Several studies have demonstrated that stigmas of Crocus sativus contain several bioactive compounds with potential health-promoting properties. However, during the processing of stigmas, large amounts of floral bio-residues are normally discarded as by-products. In this study, using untargeted metabolomics, the comprehensive phytochemical composition of C. sativus stigma and tepals was investigated. Moreover, the antibacterial and anti-biofilm properties of the extracts of C. sativus stigmas and tepals were compared. The study was carried out using two methicillin-resistant staphylococcal reference strains (i.e., Staphylococcus aureus ATCC 43300 and Staphylococcus epidermidis ATCC 35984), representing important Gram-positive biofilm-forming human pathogens. The antibacterial properties were correlated with total polyphenol content, total terpenoid content, and in vitro antioxidant properties of tepals and stigmas. The results demonstrated that stigma and tepal extracts, at the sub-toxic concentrations, were able to interfere with biofilm formation by ATCC 43300 and ATCC 35984. Besides, the higher antibacterial activity of tepals than stigmas was associated with higher levels of phycompounds. Therefore, our results demonstrated that C. sativus stigmas and bio-residues, such as tepals, are potential antioxidant sources and good candidates as antibacterial agents to prevent biofilm formation. Taken together, these findings showed that C. sativus could be used as functional ingredient by the food and pharmaceutical industries.
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Chen H, Wang W, Yu S, Wang H, Tian Z, Zhu S. Procyanidins and Their Therapeutic Potential against Oral Diseases. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092932. [PMID: 35566283 PMCID: PMC9104295 DOI: 10.3390/molecules27092932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 12/24/2022]
Abstract
Procyanidins, as a kind of dietary flavonoid, have excellent pharmacological properties, such as antioxidant, antibacterial, anti-inflammatory and anti-tumor properties, and so they can be used to treat various diseases, including Alzheimer’s disease, diabetes, rheumatoid arthritis, tumors, and obesity. Given the low bioavailability of procyanidins, great efforts have been made in drug delivery systems to address their limited use. Nowadays, the heavy burden of oral diseases such as dental caries, periodontitis, endodontic infections, etc., and their consequences on the patients’ quality of life indicate a strong need for developing effective therapies. Recent years, plenty of efforts are being made to develop more effective treatments. Therefore, this review summarized the latest researches on versatile effects and enhanced bioavailability of procyanidins resulting from innovative drug delivery systems, particularly focused on its potential against oral diseases.
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Affiliation(s)
- Huan Chen
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun 130012, China; (H.C.); (S.Y.); (H.W.); (Z.T.)
| | - Wanyu Wang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China;
| | - Shiyang Yu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun 130012, China; (H.C.); (S.Y.); (H.W.); (Z.T.)
| | - Huimin Wang
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun 130012, China; (H.C.); (S.Y.); (H.W.); (Z.T.)
| | - Zilu Tian
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun 130012, China; (H.C.); (S.Y.); (H.W.); (Z.T.)
| | - Song Zhu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun 130012, China; (H.C.); (S.Y.); (H.W.); (Z.T.)
- Correspondence: ; Tel.: +86-135-7878-5725
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45
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Phytochemical-based nanodrug delivery in cancer therapy. Int J Health Sci (Qassim) 2022. [DOI: 10.53730/ijhs.v6ns1.6134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
There are estimated to be 13.1 million cancer deaths by 2030, with 7.6 million deaths occurring each year. Phytochemicals have long been used in traditional medicine to cure cancer. However, conventional therapy for metastatic illness may fail if cancer cells become resistant to multiple anticancer drugs. Phytochemicals encapsulated in nano-based medication delivery devices were studied for their cancer- and chemo-preventive properties. Nanocarriers containing phytoconstituents have been studied in terms of loading efficiency, nanocarrier size, the release profile of the drug, and cell inhibition and treatment tests.
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Meza-Gutiérrez NN, Magallón-Servín P, Balois-Morales R, Pérez-Ramírez IF, López-Guzmán GG, Berumen-Varela G, Bautista-Rosales PU. Growth Promoting Activity of Annona muricata L. Leaf Extracts on Lactobacillus casei. PLANTS (BASEL, SWITZERLAND) 2022; 11:581. [PMID: 35270049 PMCID: PMC8912565 DOI: 10.3390/plants11050581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Soursop leaves are a source of phytochemical compounds, such as phenolic acids, flavonoids, hydrolyzable tannins, and acetogenins. These compounds can have several types of biological activities. Lactic acid bacteria can uptake phenolic compounds present in plants or fruits. The aim of the present work was to investigate the in vitro effect of hexane, acetone, methanolic, and aqueous extracts of soursop leaves (Annona muricata L.) on the growth, motility, and biofilm formation of Lactobacillus casei, and to determine compounds related to growth. The minimum concentration promoting growth, motility (swimming, swarming, and twitching), and biofilm-forming capacity (crystal violet) were evaluated. The results showed the growth-promoting capacity of acetone and aqueous extracts at low doses 25-50 mg/L, and an inhibition in the four extracts at higher doses of 100 mg/L. The L. casei growth is related to ellagic acid, quercetin rhamnoside, kaempferol dihexoside, quercetin hexoside, secoisolariciresinol, and kaempferol hexoside-rhamnoside. Hexane extract increased the three types of motility, while aqueous maintained swimming and twitching motility similar to control. The four extracts inhibited the biofilm formation capacity.
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Affiliation(s)
- Nimcy Noemí Meza-Gutiérrez
- Programa de Doctorado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Km 9 Carretera Tepic-Compostela, Xalisco C.P. 63180, Nayarit, Mexico; (N.N.M.-G.); (R.B.-M.)
- Unidad de Tecnología de Alimentos, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Ciudad de la Cultura S/N, Colonia Centro, Tepic C.P. 63000, Nayarit, Mexico;
| | - Paola Magallón-Servín
- Centro de Investigaciones Biológicas del Noroeste, Km 1 Carretera a San Juan de La Costa “El Comitan”, La Paz C.P. 23205, Baja California Sur, Mexico;
- Bashan Institure of Sciences, 1730 Post Oak Ct, Auburn, AL 36830, USA
| | - Rosendo Balois-Morales
- Programa de Doctorado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Km 9 Carretera Tepic-Compostela, Xalisco C.P. 63180, Nayarit, Mexico; (N.N.M.-G.); (R.B.-M.)
- Unidad de Tecnología de Alimentos, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Ciudad de la Cultura S/N, Colonia Centro, Tepic C.P. 63000, Nayarit, Mexico;
| | - Iza Fernanda Pérez-Ramírez
- Facultad de Química, Universidad Autónoma de Querétaro, C.U., Cerro de las Campanas S/N, Querétaro C.P. 76010, Querétaro, Mexico;
| | - Graciela Guadalupe López-Guzmán
- Unidad Académica de Agricultura, Universidad Autónoma de Nayarit, Km 9 Carretera Tepic-Compostela, Xalisco C.P. 63780, Nayarit, Mexico;
| | - Guillermo Berumen-Varela
- Unidad de Tecnología de Alimentos, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Ciudad de la Cultura S/N, Colonia Centro, Tepic C.P. 63000, Nayarit, Mexico;
| | - Pedro Ulises Bautista-Rosales
- Programa de Doctorado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Km 9 Carretera Tepic-Compostela, Xalisco C.P. 63180, Nayarit, Mexico; (N.N.M.-G.); (R.B.-M.)
- Unidad de Tecnología de Alimentos, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Ciudad de la Cultura S/N, Colonia Centro, Tepic C.P. 63000, Nayarit, Mexico;
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Kaushik V, Tiwari M, Joshi R, Tiwari V. Therapeutic strategies against potential antibiofilm targets of multidrug-resistant Acinetobacter baumannii. J Cell Physiol 2022; 237:2045-2063. [PMID: 35083758 DOI: 10.1002/jcp.30683] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/30/2021] [Accepted: 01/07/2022] [Indexed: 12/12/2022]
Abstract
Acinetobacter baumannii is the causative agent of various hospital-acquired infections. Biofilm formation is one of the various antimicrobial resistance (AMR) strategies and is associated with high mortality and morbidity. Hence, it is essential to review the potential antibiofilm targets in A. baumannii and come up with different strategies to combat these potential targets. This review covers different pathways involved in the regulation of biofilm formation in A. baumannii like quorum sensing (QS), cyclic-di-GMP signaling, two-component system (TCS), outer-membrane protein (ompA), and biofilm-associated protein (BAP). A newly discovered mechanism of electrical signaling-mediated biofilm formation and contact-dependent biofilm modulation has also been discussed. As biofilm formation and its maintenance in A. baumannii is facilitated by these potential targets, the detailed study of these targets and pathways can bring light to different therapeutic strategies such as anti-biofilm peptides, natural and synthetic molecule inhibitors, QS molecule degrading enzymes, and other strategies. These strategies may help in suppressing the lethality of biofilm-mediated infections. Targeting essential proteins/targets which are crucial for biofilm formation and regulation may render new therapeutic strategies that can aid in combating biofilm, thus reducing the recalcitrant infections and morbidity associated with the biofilm of A. baumannii.
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Affiliation(s)
- Vaishali Kaushik
- Department of Biochemistry, Central University of Rajasthan, Ajmer, India
| | - Monalisa Tiwari
- Department of Biochemistry, Central University of Rajasthan, Ajmer, India
| | - Richa Joshi
- Department of Biochemistry, Central University of Rajasthan, Ajmer, India
| | - Vishvanath Tiwari
- Department of Biochemistry, Central University of Rajasthan, Ajmer, India
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Millones Gómez PA, Tay Chu Jon LY, Maurtua Torres DJ, Bacilio Amaranto RE, Collantes Díaz IE, Minchón Medina CA, Calla Choque JS. Antibacterial, antibiofilm, and cytotoxic activities and chemical compositions of Peruvian propolis in an in vitro oral biofilm. F1000Res 2022; 10:1093. [PMID: 34853678 PMCID: PMC8613507 DOI: 10.12688/f1000research.73602.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/13/2021] [Indexed: 12/27/2022] Open
Abstract
Background: Natural products with antibacterial potential have begun to be tested on biofilm models, bringing us closer to understanding the response generated by the complex microbial ecosystems of the oral cavity. The objective of this study was to evaluate the antibacterial, antibiofilm, and cytotoxic activities and chemical compositions of Peruvian propolis in an
in vitro biofilm of
Streptococcus gordonii and
Fusobacterium nucleatum. Methods: The experimental work involved a consecutive,
in vitro, longitudinal, and double-blinded study design. Propolis samples were collected from 13 different regions of the Peruvian Andes. The disk diffusion method was used for the antimicrobial susceptibility test. The cytotoxic effect of propolis on human gingival fibroblasts was determined by cell viability method using the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide) assay, and the effect of propolis on the biofilm was evaluated by confocal microscopy and polymerase chain reaction (PCR). Results: The 0.78 mg/mL and 1.563 mg/mL concentrations of the methanolic fraction of the chloroform residue of Oxapampa propolis showed effects on biofilm thickness and the copy numbers of the
srtA gene of
S. gordonii and the
radD gene of
F. nucleatum at 48 and 120 hours, and chromatography (UV, λ 280 nm) identified rhamnocitrin, isorhamnetin, apigenin, kaempferol, diosmetin, acacetin, glycerol, and chrysoeriol. Conclusions: Of the 13 propolis evaluated, it was found that only the methanolic fraction of Oxapampa propolis showed antibacterial and antibiofilm effects without causing damage to human gingival fibroblasts. Likewise, when evaluating the chemical composition of this fraction, eight flavonoids were identified.
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Affiliation(s)
- Pablo Alejandro Millones Gómez
- Facultad de Medicina, Universidad Señor de Sipán, Chiclayo, 14000, Peru.,Faculty of Dentistry, Universidad Peruana Cayetano Heredia, Lima, 07001, Peru
| | | | | | | | | | - Carlos Alberto Minchón Medina
- Department of Statistics, Faculty of Physical Sciences and Mathematics, Universidad Nacional de Trujillo, Trujillo, 13001, Peru
| | - Jaeson Santos Calla Choque
- Department of Pediatrics, School of Medicine, University of California San Diego (UCSD), La Jolla, CA, 92093, USA
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Can Polyphenols Inhibit Ferroptosis? Antioxidants (Basel) 2022; 11:antiox11010150. [PMID: 35052654 PMCID: PMC8772735 DOI: 10.3390/antiox11010150] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/09/2022] [Accepted: 01/10/2022] [Indexed: 02/07/2023] Open
Abstract
Polyphenols, a diverse group of naturally occurring molecules commonly found in higher plants, have been heavily investigated over the last two decades due to their potent biological activities—among which the most important are their antioxidant, antimicrobial, anticancer, anti-inflammatory and neuroprotective activities. A common route of polyphenol intake in humans is through the diet. Since they are subjected to excessive metabolism in vivo it has been questioned whether their much-proven in vitro bioactivity could be translated to in vivo systems. Ferroptosis is a newly introduced, iron-dependent, regulated mode of oxidative cell death, characterized by increased lipid peroxidation and the accumulation of toxic lipid peroxides, which are considered to be toxic reactive oxygen species. There is a growing body of evidence that ferroptosis is involved in the development of almost all chronic diseases. Thus, ferroptosis is considered a new therapeutic target for offsetting many diseases, and researchers are putting great expectations on this field of research and medicine. The aim of this review is to critically analyse the potential of polyphenols to modulate ferroptosis and whether they can be considered promising compounds for the alleviation of chronic conditions.
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50
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Oulahal N, Degraeve P. Phenolic-Rich Plant Extracts With Antimicrobial Activity: An Alternative to Food Preservatives and Biocides? Front Microbiol 2022; 12:753518. [PMID: 35058892 PMCID: PMC8764166 DOI: 10.3389/fmicb.2021.753518] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/24/2021] [Indexed: 12/18/2022] Open
Abstract
In recent years, the search for natural plant-based antimicrobial compounds as alternatives to some synthetic food preservatives or biocides has been stimulated by sanitary, environmental, regulatory, and marketing concerns. In this context, besides their established antioxidant activity, the antimicrobial activity of many plant phenolics deserved increased attention. Indeed, industries processing agricultural plants generate considerable quantities of phenolic-rich products and by-products, which could be valuable natural sources of natural antimicrobial molecules. Plant extracts containing volatile (e.g., essential oils) and non-volatile antimicrobial molecules can be distinguished. Plant essential oils are outside the scope of this review. This review will thus provide an overview of current knowledge regarding the promises and the limits of phenolic-rich plant extracts for food preservation and biofilm control on food-contacting surfaces. After a presentation of the major groups of antimicrobial plant phenolics, of their antimicrobial activity spectrum, and of the diversity of their mechanisms of action, their most promising sources will be reviewed. Since antimicrobial activity reduction often observed when comparing in vitro and in situ activities of plant phenolics has often been reported as a limit for their application, the effects of the composition and the microstructure of the matrices in which unwanted microorganisms are present (e.g., food and/or microbial biofilms) on their activity will be discussed. Then, the different strategies of delivery of antimicrobial phenolics to promote their activity in such matrices, such as their encapsulation or their association with edible coatings or food packaging materials are presented. The possibilities offered by encapsulation or association with polymers of packaging materials or coatings to increase the stability and ease of use of plant phenolics before their application, as well as to get systems for their controlled release are presented and discussed. Finally, the necessity to consider phenolic-rich antimicrobial plant extracts in combination with other factors consistently with hurdle technology principles will be discussed. For instance, several authors recently suggested that natural phenolic-rich extracts could not only extend the shelf-life of foods by controlling bacterial contamination, but could also coexist with probiotic lactic acid bacteria in food systems to provide enhanced health benefits to human.
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Affiliation(s)
- Nadia Oulahal
- Univ Lyon, Université Claude Bernard Lyon 1, ISARA Lyon, BioDyMIA (Bioingénierie et Dynamique Microbienne aux Interfaces Alimentaires), Equipe Mixte d’Accueil n°3733, IUT Lyon 1, Technopole Alimentec, Bourg-en-Bresse, France
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