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Lima Bezerra JJ, Vieira Pinheiro AA, Melo Coutinho HD. Phytochemical and ethnomedicinal evidences of the use of Alternanthera brasiliana (L.) Kuntze against infectious diseases. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118304. [PMID: 38723917 DOI: 10.1016/j.jep.2024.118304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/20/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Popularly known as "penicilina" and "terramicina", Alternanthera brasiliana (L.) Kuntze belongs to the Amaranthaceae family and stands out for its ethnomedicinal uses in the treatment of infections caused by pathogenic microorganisms in some countries. AIM OF THE STUDY The present study aimed to carry out a literature review and analyze whether the scientific evidence really validates the numerous indications for the use of A. brasiliana in traditional medicine for the treatment of infectious diseases. Phytochemical and toxicological studies related to this species were also analyzed. MATERIAL AND METHODS Scientific documents were retrieved from Google Scholar, PubMed®, ScienceDirect®, SciELO, SpringerLink®, Scopus®, and Web of Science™ databases. The literature was reviewed from the first report on the antimicrobial activity of A. brasiliana in 1994 until April 2024. RESULTS According to the scientific documents analyzed, it was observed that A. brasiliana is widely used as a natural antibiotic for the treatment of infectious diseases in Brazil, mainly in the states of Rio Grande do Sul, Mato Grosso, and Minas Gerais. Its ethnomedicinal uses have also been reported in other countries such as Colombia and India. The leaves (78%) of A. brasiliana are the main parts used in the preparation of herbal medicines by traditional communities. Several A. brasiliana extracts showed low activity when evaluated against pathogens, including gram-positive bacteria, gram-negative bacteria, parasitic protozoa, and fungi. Only two studies reported that extracts from this plant showed high activity against the herpes simplex virus, Mycobacterium smegmatis, and Candida albicans. Phytochemicals belonging to the classes of phenolic compounds and flavonoid (52%), saturated and unsaturated fatty acids (33%), steroids and phytosterols (8%), terpenoids (5%), and fatty alcohol esters (2%) were identified in A. brasiliana. Toxicity (in vivo) and cytotoxicity (in vitro) studies of polar and non-polar extracts obtained from A. brasiliana leaves indicated that this plant is biologically safe. CONCLUSION Despite being widely used as a natural antibiotic by traditional communities, scientific investigations related to the antimicrobial potential of A. brasiliana extracts have indicated inactivity against several pathogens.
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Affiliation(s)
- José Jailson Lima Bezerra
- Universidade Federal de Pernambuco, Departamento de Botânica, Programa de Pós-Graduação em Biologia Vegetal, Av. da Engenharia, s/n, Cidade Universitária, 50670-420, Recife, PE, Brazil
| | - Anderson Angel Vieira Pinheiro
- Universidade Federal de Campina Grande, Centro de Formação de Professores, Rua Sérgio Moreira de Figueiredo s/n, Casas Populares, 58900-000 Cajazeiras, PB, Brazil
| | - Henrique Douglas Melo Coutinho
- Laboratory of Microbiology and Molecular Biology-LMBM, Regional University of Cariri-URCA, Antonio Luiz Avenue, Crato, 63105-000, CE, Brazil.
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María Bonilla-Luque O, Nunes Silva B, Ezzaky Y, Possas A, Achemchem F, Cadavez V, Gonzales-Barron Ú, Valero A. Meta-analysis of antimicrobial activity of Allium, Ocimum, and Thymus spp. confirms their promising application for increasing food safety. Food Res Int 2024; 188:114408. [PMID: 38823853 DOI: 10.1016/j.foodres.2024.114408] [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: 12/08/2023] [Revised: 04/17/2024] [Accepted: 04/20/2024] [Indexed: 06/03/2024]
Abstract
Biopreservation strategies such as the use of Mediterranean plant extracts to ensure food safety are promising to deal with the emergence of antimicrobial resistances and the overreliance on food chemical additives. In the last few decades, antimicrobial susceptibility testing (AST) for evaluating the in vitro antibacterial potential of plant extracts against the most relevant foodborne pathogens has been widely reported in the literature. The current meta-analysis aimed to summarise and analyse the extensive evidence available in the literature regarding the in vitro antimicrobial capability of Allium, Ocimum and Thymus spp. extracts against foodborne pathogens. A systematic review was carried out to gather data on AST results of these extracts against Listeria monocytogenes, Staphylococcus aureus, Salmonella spp., Escherichia coli and Bacillus cereus, including inhibition diameters (ID) and minimum inhibitory concentrations (MIC). A total of 742 records were gathered from a raw collection of 2,065 articles. Weighted mixed-effect linear models were adjusted to data to obtain pooled ID, pooled MIC and the relationship between both model estimations and observations. The pooled results revealed B. cereus as the most susceptible bacteria to Allium sativum (pooled ID = 20.64 ± 0.61 mm) by diffusion methods and S. aureus (pooled MIC = 0.146 mg/mL) by dilution methods. Diffusion methods did not yield conclusive results for Ocimum spp. extracts; however, the lowest pooled MIC was obtained for S. aureus (0.263 mg/mL). Among the foodborne pathogens evaluated, B. cereus showed the highest sensitivity to Thymus spp. extracts by both diffusion and dilution methods (pooled ID = 28.90 ± 2.34 mm and MIC = 0.075 mg/mL). The methodology used for plant extraction was found to not significantly affect MIC values (p > 0.05). Overall, the antimicrobial effectiveness of the studied extracts against Gram-positive and Gram-negative bacteria was demonstrated. Finally, the robustness of the meta-regression model was confirmed, also revealing an inversely proportional correlation between the ID and MIC measurements (p < 0.0001). These results provide a robust scientific basis on the factors affecting the in vitro antimicrobial efficacy of extracts from Mediterranean plants. They also provide valuable information for stakeholders involved in their industrial application in food, including producers, regulatory agencies and consumers which demand green-labelled foods.
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Affiliation(s)
- Olga María Bonilla-Luque
- Departamento de Bromatología y Tecnología de los Alimentos, Grupo de Investigación en Higiene Bromatológica (HIBRO), UIC Zoonosis y Enfermedades Emergentes (ENZOEM), International Agrifood Campus of Excellence (CeiA3), Universidad de Córdoba, 14014 Córdoba, Spain.
| | - Beatriz Nunes Silva
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório para a Sustentabilidade e Tecnologia em Regiões de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Youssef Ezzaky
- Bioprocess and Environment Team, LASIME Lab., Agadir Superior School of Technology, Ibn Zohr University, 80150 Agadir, Morocco.
| | - Arícia Possas
- Departamento de Bromatología y Tecnología de los Alimentos, Grupo de Investigación en Higiene Bromatológica (HIBRO), UIC Zoonosis y Enfermedades Emergentes (ENZOEM), International Agrifood Campus of Excellence (CeiA3), Universidad de Córdoba, 14014 Córdoba, Spain.
| | - Fouad Achemchem
- Bioprocess and Environment Team, LASIME Lab., Agadir Superior School of Technology, Ibn Zohr University, 80150 Agadir, Morocco.
| | - Vasco Cadavez
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório para a Sustentabilidade e Tecnologia em Regiões de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Úrsula Gonzales-Barron
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório para a Sustentabilidade e Tecnologia em Regiões de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Antonio Valero
- Departamento de Bromatología y Tecnología de los Alimentos, Grupo de Investigación en Higiene Bromatológica (HIBRO), UIC Zoonosis y Enfermedades Emergentes (ENZOEM), International Agrifood Campus of Excellence (CeiA3), Universidad de Córdoba, 14014 Córdoba, Spain.
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Aurori M, Novac CȘ, Nadăș GC, Crăciun S, Fiţ N, Andrei S. The Antimicrobial Effect of Cornus mas L. and Sorbus aucuparia L. Fruit Extracts against Resistant Uropathogens in Correlation with the Prevalence of Urinary Tract Infections in Companion Animals. Pharmaceuticals (Basel) 2024; 17:814. [PMID: 38931481 PMCID: PMC11206431 DOI: 10.3390/ph17060814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/08/2024] [Accepted: 06/19/2024] [Indexed: 06/28/2024] Open
Abstract
Urinary tract infections (UTIs) are a widespread condition in pets, with many antibiotics being prescribed, contributing to the rise in antimicrobial resistance, which is a worldwide threat. This study's main objective was to analyze the in vitro antimicrobial activity of Cornus mas and Sorbus aucuparia fruit hydro-ethanolic extracts towards bacteria identified in the urine of companion animals experiencing UTIs. Urine samples were collected from dogs and cats (n = 83; 47 negative, 36 positive); several bacterial strains were identified (n = 49) belonging to the Escherichia, Enterococcus, Staphylococcus, Proteus, Klebsiella, Enterobacter, Pseudomonas, Acinetobacter, Leclercia, and Kocuria genera. Bacterial susceptibility was tested using the disk diffusion method, with the majority being resistant to several beta-lactams, quinolones, trimethoprim/sulfamethoxazole, and nitrofurantoin. Subsequently, 13 resistant isolates were selected to evaluate the fruits extracts' antimicrobial potential using the agar well diffusion and broth microdilution methods. Cornus mas exhibited the greatest activity against Gram-negatives (primarily Pseudomonas luteola), while Sorbus aucuparia showed maximum effects towards Gram-positives (particularly Enterococcus faecalis). The MIC was 0.01 μg/μL for both extracts; the MBC was 0.08 μg/μL for Cornus mas and 0.05 μg/μL for Sorbus aucuparia. However, Cornus mas showed a stronger bactericidal effect. This is the first study to investigate these fruit extracts in UTI isolates of companion animals, and these extracts might be used as substitutes or adjuvants for antibiotics, thus contributing to a reduction in antimicrobial resistance.
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Affiliation(s)
- Mara Aurori
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania;
| | - Cristiana Ștefania Novac
- Department of Microbiology, Immunology and Epidemiology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (C.Ș.N.); (G.C.N.); (S.C.); (N.F.)
| | - George Cosmin Nadăș
- Department of Microbiology, Immunology and Epidemiology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (C.Ș.N.); (G.C.N.); (S.C.); (N.F.)
| | - Smaranda Crăciun
- Department of Microbiology, Immunology and Epidemiology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (C.Ș.N.); (G.C.N.); (S.C.); (N.F.)
| | - Nicodim Fiţ
- Department of Microbiology, Immunology and Epidemiology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (C.Ș.N.); (G.C.N.); (S.C.); (N.F.)
| | - Sanda Andrei
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania;
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Morellá-Aucejo Á, Medaglia S, Ruiz-Rico M, Martínez-Máñez R, Marcos MD, Bernardos A. Remarkable enhancement of cinnamaldehyde antimicrobial activity encapsulated in capped mesoporous nanoparticles: A new "nanokiller" approach in the era of antimicrobial resistance. BIOMATERIALS ADVANCES 2024; 160:213840. [PMID: 38579520 DOI: 10.1016/j.bioadv.2024.213840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 03/08/2024] [Accepted: 03/23/2024] [Indexed: 04/07/2024]
Abstract
Combating antimicrobial resistance is one of the biggest health challenges because of the ineffectiveness of standard biocide treatments. This challenge could be approached using natural products, which have demonstrated powerful therapeutics against multidrug-resistant microbes. In the present work, a nanodevice consisting of mesoporous silica nanoparticles loaded with an essential oil component (cinnamaldehyde) and functionalized with the polypeptide ε-poly-l-lysine is developed and used as an antimicrobial agent. In the presence of the corresponding stimuli (i.e., exogenous proteolytic enzymes from bacteria or fungi), the polypeptide is hydrolyzed, and the cinnamaldehyde delivery is enhanced. The nanodevice's release mechanism and efficacy are evaluated in vitro against the pathogenic microorganisms Escherichia coli, Staphylococcus aureus, and Candida albicans. The results demonstrate that the new device increases the delivery of the cinnamaldehyde via a biocontrolled uncapping mechanism triggered by proteolytic enzymes. Moreover, the nanodevice notably improves the antimicrobial efficacy of cinnamaldehyde when compared to the free compound, ca. 52-fold for E. coli, ca. 60-fold for S. aureus, and ca. 7-fold for C. albicans. The enhancement of the antimicrobial activity of the essential oil component is attributed to the decrease of its volatility due to its encapsulation in the porous silica matrix and the increase of its local concentration when released due to the presence of microorganisms.
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Affiliation(s)
- Ángela Morellá-Aucejo
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València and Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 46022 Valencia, Spain; Unidad Mixta UPV-CIPF de Investigación en Mecanismos Enfermedades y Nanomedicina, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, C/Eduardo Primo Yúfera 3, 46012 Valencia, Spain
| | - Serena Medaglia
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València and Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 46022 Valencia, Spain
| | - María Ruiz-Rico
- Instituto Universitario de Ingeniería de Alimentos (FoodUPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València and Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 46022 Valencia, Spain; Unidad Mixta de Investigación en Nanomedicina y Sensores, Universitat Politècnica de València, Instituto de Investigación Sanitaria La Fe (IISLAFE), Av Fernando Abril Martorell 106, 46026 Valencia, Spain; Unidad Mixta UPV-CIPF de Investigación en Mecanismos Enfermedades y Nanomedicina, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, C/Eduardo Primo Yúfera 3, 46012 Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - María Dolores Marcos
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València and Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 46022 Valencia, Spain; Unidad Mixta UPV-CIPF de Investigación en Mecanismos Enfermedades y Nanomedicina, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, C/Eduardo Primo Yúfera 3, 46012 Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Andrea Bernardos
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València and Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 46022 Valencia, Spain; Unidad Mixta UPV-CIPF de Investigación en Mecanismos Enfermedades y Nanomedicina, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, C/Eduardo Primo Yúfera 3, 46012 Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.
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Zimmermann C, Dähn S, Wagner AE. Effect of allyl-isothiocyanate on survival and antimicrobial peptide expression following oral bacterial infections in Drosophila melanogaster. Front Immunol 2024; 15:1404086. [PMID: 38803500 PMCID: PMC11128604 DOI: 10.3389/fimmu.2024.1404086] [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: 03/27/2024] [Accepted: 04/24/2024] [Indexed: 05/29/2024] Open
Abstract
Since infections with antibiotic-resistant bacteria cause increasing problems worldwide, the identification of alternative therapies is of great importance. Plant-derived bioactives, including allyl-isothiocyanate (AITC), have received attention for their antimicrobial properties. The present study therefore investigates the impact of AITC on survival and antimicrobial peptide (AMP) levels in Drosophila melanogaster challenged with the fly pathogenic bacteria Pectobacterium carotovorum subsp. carotovorum and Leuconostoc pseudomesenteroides. AITC, a sulfur-containing compound derived from glucosinolates, exhibits antimicrobial properties and has been suggested to modulate AMP expression. By using D. melanogaster, we demonstrate that AITC treatment resulted in a concentration-dependent decrease of survival rates among female flies, particularly in the presence of the Gram-negative bacterium Pectobacterium carotovorum subsp. carotovorum, whereas AITC did not affect survival in male flies. Despite the ability of isothiocyanates to induce AMP expression in cell culture, we did not detect significant changes in AMP mRNA levels in infected flies exposed to AITC. Our findings suggest sex-specific differences in response to AITC treatment and bacterial infections, underlining the complexity of host-pathogen interactions and potential limitations of AITC as a preventive or therapeutic compound at least in D. melanogaster models of bacterial infections.
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Affiliation(s)
| | - Sonja Dähn
- Institute of Nutritional Science, Justus Liebig University, Giessen, Germany
| | - Anika E. Wagner
- Institute of Nutritional Science, Justus Liebig University, Giessen, Germany
- Centre for Sustainable Food Systems, Justus Liebig University, Giessen, Germany
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6
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Stanković MM, Ristivojević PM, Ivković ĐD, Milutinović MG, Terzić JN, Stefanović OD. A comprehensive study on Geranium robertianum L. antibacterial potential. J Appl Microbiol 2024; 135:lxae106. [PMID: 38658191 DOI: 10.1093/jambio/lxae106] [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: 10/10/2023] [Revised: 02/23/2024] [Accepted: 04/23/2024] [Indexed: 04/26/2024]
Abstract
AIMS The research aimed to optimize the ultrasound-assisted extraction of secondary metabolites and the antibacterial activity of the plant species Geranium robertianum. The phytochemical profiles of the optimized extracts, as well as their antibacterial and synergistic activity with an antibiotic and their potential mechanisms of action and cytotoxicity, were examined. METHODS AND RESULTS Response Surface Methodology was used to optimize extraction conditions. Optimized ethanol and acetone extracts were tested via microdilution, checkerboard, time-kill kinetics, and cell membrane permeability methods. The extracts displayed broad antibacterial activity with minimum inhibitory concentrations ranging from 1.25 to 20 mg ml-1. In addition, the extract synergistically reacted with gentamicin against gentamicin-resistant strains of Escherichia coli and Staphylococcus aureus, enhancing the efficacy of the antibiotic up to 32-fold. The extracts demonstrated strain-dependent bactericidal activity in a 24-h time interval. They increase the permeability of the cell membrane, thus disrupting its normal functioning. The cytotoxic concentration (CC50) on human keratinocytes was 1771.24 ± 5.78 µg ml-1 for ethanol extract, and 958.01 ± 6.14 µg ml-1 for acetone extract. Kaempferol, ellagic acid, quercetin, and rutin were recognized as the main components in both extracts. CONCLUSIONS The findings of this study indicate that the extracts of G. robertianum can be considered as potential natural antibacterial agents in the control of microorganisms.
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Affiliation(s)
- Marina M Stanković
- University of Kragujevac, Faculty of Science, Department of Biology and Ecology, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Petar M Ristivojević
- University of Belgrade, Faculty of Chemistry, Chair of Analytical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Đurđa D Ivković
- Innovation Centre of Faculty of Chemistry Ltd., Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Milena G Milutinović
- University of Kragujevac, Faculty of Science, Department of Biology and Ecology, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Jelena N Terzić
- University of Kragujevac, Faculty of Science, Department of Biology and Ecology, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Olgica D Stefanović
- University of Kragujevac, Faculty of Science, Department of Biology and Ecology, Radoja Domanovića 12, 34000 Kragujevac, Serbia
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Ismail S, Masi M, Gaglione R, Arciello A, Cimmino A. Antimicrobial and antibiofilm activity of specialized metabolites isolated from Centaurea hyalolepis. PeerJ 2024; 12:e16973. [PMID: 38560449 PMCID: PMC10979744 DOI: 10.7717/peerj.16973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/29/2024] [Indexed: 04/04/2024] Open
Abstract
The discovery of plant-derived compounds that are able to combat antibiotic-resistant pathogens is an urgent demand. Over years, Centaurea hyalolepis attracted considerable attention because of its beneficial medical properties. Phytochemical analyses revealed that Centaurea plant species contain several metabolites, such as sesquiterpene lactones (STLs), essential oils, flavonoids, alkaloids, and lignans.The organic extract of C. hyalolepis plant, collected in Palestine, showed significant antimicrobial properties towards a panel of Gram-negative and Gram-positive bacterial strains when the Minimal Inhibitory Concentration (MIC) values were evaluated by broth microdilution assays. A bio-guided fractionation of the active extract via multiple steps of column and thin layer chromatography allowed us to obtain three main compounds. The isolated metabolites were identified as the STLs cnicin, 11β,13-dihydrosalonitenolide and salonitenolide by spectroscopic and spectrometric analyses. Cnicin conferred the strongest antimicrobial activity among the identified compounds. Moreover, the evaluation of its antibiofilm activity by biomass assays through crystal violet staining revealed almost 30% inhibition of biofilm formation in the case of A. baumannii ATCC 17878 strain. Furthermore, the quantification of carbohydrates and proteins present in the extracellular polymeric substance (EPS) revealed the ability of cnicin to significantly perturb biofilm structure. Based on these promising results, further investigations might open interesting perspectives to its applicability in biomedical field to counteract multidrug resistant infections.
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Affiliation(s)
- Shurooq Ismail
- University of Naples Federico II, Naples, Italy
- An-Najah National University, Nablus, Palestine
| | - Marco Masi
- University of Naples Federico II, Naples, Italy
| | - Rosa Gaglione
- University of Naples Federico II, Naples, Italy
- Istituto Nazionale di Biostrutture e Biosistemi, Rome, Italy
| | - Angela Arciello
- University of Naples Federico II, Naples, Italy
- Istituto Nazionale di Biostrutture e Biosistemi, Rome, Italy
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Murtaza M, Abrol V, Nehra E, Choudhary P, Singh SK, Jaglan S. Biodiversity and Bioactive Potential of Actinomycetes from Unexplored High Altitude Regions of Kargil, India. Indian J Microbiol 2024; 64:110-124. [PMID: 38468743 PMCID: PMC10924818 DOI: 10.1007/s12088-023-01133-1] [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: 08/24/2023] [Accepted: 10/30/2023] [Indexed: 03/13/2024] Open
Abstract
The effectiveness of currently available antimicrobials and anticancer medications is steadily declining due to the emergence of drug resistance. Since actinobacteria are important producers of bioactive substances, we have isolated them from the soil samples of exotic North-Western Himalayan terrains. Out of 128 isolates, 39 strains were prioritized based on their bioactive potential. The diversity analysis revealed higher abundance distribution of actinomycetes in the soil of an open field (68.7%), followed by the mountainside (34.9%), from which most of the bioactive strains were obtained. The extract of the strain S26-11 was found to be highly active against Gram-positive Staphylococcus aureus and Bacillus subtilis with a MIC of 0.5 μg/mL and 1 μg/mL respectively. A cytotoxicity assay (sulforhodamine B) was performed on a series of cancer cell lines (PC-3, MCF-7, A-549, and HCT-116). The extract of the strain S26-11 showed cytotoxic activity against all cancer cell lines with an IC50 of 2 µg/mL against PC-3, 1.9 µg/mL against MCF-7, 0.52 µg/mL against A-549, and 0.83 µg/mL against HCT-116. Moreover, the antioxidant activity was assessed using a DPPH-based assay and the results revealed that the S17-8 isolate showed the highest antioxidant activity with IC50 of 114.136 μg/mL. The Response Surface Methodology (RSM) had helped to optimize the physical parameters for scaling up of the bioactive strain S26-11. The unexplored soil niches of Kargil (UT, Ladakh), India, is rich in actinomycetes which are having potential bioactivities, would be worth to explore for the discovery of bioactive compounds. Supplementary Information The online version contains supplementary material available at 10.1007/s12088-023-01133-1.
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Affiliation(s)
- Mohd Murtaza
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180016 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Vidushi Abrol
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180016 India
| | - Ekta Nehra
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180016 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Poonam Choudhary
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180016 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Shashank K. Singh
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180016 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Sundeep Jaglan
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180016 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
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Apostolidou CP, Kokotidou C, Platania V, Nikolaou V, Landrou G, Nikoloudakis E, Charalambidis G, Chatzinikolaidou M, Coutsolelos AG, Mitraki A. Antimicrobial Potency of Fmoc-Phe-Phe Dipeptide Hydrogels with Encapsulated Porphyrin Chromophores Is a Promising Alternative in Antimicrobial Resistance. Biomolecules 2024; 14:226. [PMID: 38397463 PMCID: PMC10887087 DOI: 10.3390/biom14020226] [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: 12/11/2023] [Revised: 01/29/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
Antimicrobial resistance (AMR) poses a significant global health risk as a consequence of misuse of antibiotics. Owing to the increasing antimicrobial resistance, it became imperative to develop novel molecules and materials with antimicrobial properties. Porphyrins and metalloporphyrins are compounds which present antimicrobial properties especially after irradiation. As a consequence, porphyrinoids have recently been utilized as antimicrobial agents in antimicrobial photodynamic inactivation in bacteria and other microorganisms. Herein, we report the encapsulation of porphyrins into peptide hydrogels which serve as delivery vehicles. We selected the self-assembling Fmoc-Phe-Phe dipeptide, a potent gelator, as a scaffold due to its previously reported biocompatibility and three different water-soluble porphyrins as photosensitizers. We evaluated the structural, mechanical and in vitro degradation properties of these hydrogels, their interaction with NIH3T3 mouse skin fibroblasts, and we assessed their antimicrobial efficacy against Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) bacteria. We found out that the hydrogels are cytocompatible and display antimicrobial efficiency against both strains with the zinc porphyrins being more efficient. Therefore, these hydrogels present a promising alternative for combating bacterial infections in the face of growing AMR concerns.
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Affiliation(s)
- Chrysanthi Pinelopi Apostolidou
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 71003 Heraklion, Greece; (C.P.A.); (C.K.); (V.P.)
- Institute of Electronic Structure and Laser (IESL) FORTH, 70013 Heraklion, Greece
| | - Chrysoula Kokotidou
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 71003 Heraklion, Greece; (C.P.A.); (C.K.); (V.P.)
- Institute of Electronic Structure and Laser (IESL) FORTH, 70013 Heraklion, Greece
| | - Varvara Platania
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 71003 Heraklion, Greece; (C.P.A.); (C.K.); (V.P.)
- Institute of Electronic Structure and Laser (IESL) FORTH, 70013 Heraklion, Greece
| | - Vasilis Nikolaou
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Greece (G.L.); (E.N.); (G.C.)
| | - Georgios Landrou
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Greece (G.L.); (E.N.); (G.C.)
| | - Emmanouil Nikoloudakis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Greece (G.L.); (E.N.); (G.C.)
| | - Georgios Charalambidis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Greece (G.L.); (E.N.); (G.C.)
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
| | - Maria Chatzinikolaidou
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 71003 Heraklion, Greece; (C.P.A.); (C.K.); (V.P.)
- Institute of Electronic Structure and Laser (IESL) FORTH, 70013 Heraklion, Greece
| | - Athanassios G. Coutsolelos
- Institute of Electronic Structure and Laser (IESL) FORTH, 70013 Heraklion, Greece
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Greece (G.L.); (E.N.); (G.C.)
| | - Anna Mitraki
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 71003 Heraklion, Greece; (C.P.A.); (C.K.); (V.P.)
- Institute of Electronic Structure and Laser (IESL) FORTH, 70013 Heraklion, Greece
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10
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Jankowski G, Sawicki R, Truszkiewicz W, Wolan N, Ziomek M, Hryć B, Sieniawska E. Molecular insight into thymoquinone mechanism of action against Mycobacterium tuberculosis. Front Microbiol 2024; 15:1353875. [PMID: 38414774 PMCID: PMC10896893 DOI: 10.3389/fmicb.2024.1353875] [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: 12/11/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024] Open
Abstract
Natural products are promising antimicrobials, usually having multiple and different cellular targets than synthetic antibiotics. Their influence on bacteria at various metabolic and functional levels contributes to higher efficacy even against drug-resistant strains. One such compound is a naturally occurring p-benzoquinone - thymoquinone. It is effective against different bacteria, including multidrug-resistant and extremely drug-resistant Mycobacterium tuberculosis. Its antibacterial mechanism of action was studied in several bacterial species except mycobacteria. To get an insight into the antimycobacterial activity of thymoquinone at the molecular level, we performed metabolomic and transcriptomic analyzes of bacteria exposed to this compound. The expression of genes coding stress-responsive sigma factors revealed that thymoquinone rapidly induces the production of sigE transcripts. At the same time, prolonged influence results in the overexpression of all sigma factor genes and significantly upregulates sigF. The metabolomic analysis confirmed that the antimycobacterial activity of thymoquinone was related to the depletion of NAD and ATP pools and the downregulation of plasma membrane lipids. This state was observed after 24 h and was persistent the next day, suggesting that bacteria could not activate catabolic mechanisms and produce energy. Additionally, the presence of a thymoquinone nitrogen derivative in the bacterial broth and the culture was reported.
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Affiliation(s)
- Grzegorz Jankowski
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Lublin, Poland
| | - Rafał Sawicki
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Lublin, Poland
| | - Wiesław Truszkiewicz
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Lublin, Poland
| | - Natalia Wolan
- Student Research Group, Department of Pharmacognosy with Medicinal Plants Garden, Medical University of Lublin, Lublin, Poland
| | - Marcin Ziomek
- Student Research Group, Department of Pharmacognosy with Medicinal Plants Garden, Medical University of Lublin, Lublin, Poland
| | - Benita Hryć
- Department of Natural Products Chemistry, Medical University of Lublin, Lublin, Poland
| | - Elwira Sieniawska
- Department of Natural Products Chemistry, Medical University of Lublin, Lublin, Poland
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11
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Zada L, Anwar S, Imtiaz S, Saleem M, Shah AA. In vitro study: methylene blue-based antibacterial photodynamic inactivation of Pseudomonas aeruginosa. Appl Microbiol Biotechnol 2024; 108:169. [PMID: 38261091 PMCID: PMC10806092 DOI: 10.1007/s00253-024-13009-5] [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: 08/02/2023] [Revised: 12/31/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
Pseudomonas aeruginosa is one of the most antibiotic-resistant and opportunistic pathogens in immunocompromised and debilitated patients. It is considered the cause of most severe skin infections and is frequently found in hospital burn units. Due to its high antibiotic resistance, eliminating P. aeruginosa from skin infections is quite challenging. Therefore, this study aims to assess the novel in vitro antibacterial activity of methylene blue using a 635-nm diode laser to determine the effective power and energy densities for inhibition of P. aeruginosa. The strain was treated with various concentrations of methylene blue and 635-nm diode laser at powers of 300 mW/cm2 and 250 mW/cm2. The diode laser's potency in the photo-destruction of methylene blue and its degradation through P. aeruginosa were also evaluated. Colony-forming unit (CFU)/ml, fluorescence spectroscopy, optical density, and confocal microscopy were used to measure the bacterial killing effect. As a result, the significant decrease of P. aeruginosa was 2.15-log10, 2.71-log10, and 3.48-log10 at 60, 75, and 90 J/cm2 after excitation of MB for 240, 300, and 360 s at a power of 250 mW/cm2, respectively. However, a maximum decrease in CFU was observed by 2.54-log10 at 72 J/cm2 and 4.32-log10 at 90 and 108 J/cm2 after 300 mW/cm2 of irradiation. Fluorescence images confirmed the elimination of bacteria and showed a high degree of photo-destruction compared to treatment with methylene blue and light alone. In conclusion, MB-induced aPDT demonstrated high efficacy, which could be a potential approach against drug-resistant pathogenic bacteria. KEY POINTS: • Combination of methylene blue with 635-nm diode laser for antibacterial activity. • Methylene blue photosensitizer is employed as an alternative to antibiotics. • aPDT showed promising antibacterial activity against Pseudomonas aeruginosa.
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Affiliation(s)
- Laiq Zada
- Applied Environmental and Geo-Microbiology Lab, Department of Microbiology, Quaid-i-Azam University, Islamabad, 45320, Pakistan
- Agri & Biophotonics Laboratory, National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan
| | - Shahzad Anwar
- Agri & Biophotonics Laboratory, National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan.
| | - Sana Imtiaz
- Agri & Biophotonics Laboratory, National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan
| | - Muhammad Saleem
- Agri & Biophotonics Laboratory, National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan
| | - Aamer Ali Shah
- Applied Environmental and Geo-Microbiology Lab, Department of Microbiology, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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12
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Shobana R, Thahirunnisa JH, Sivaprakash S, Amali AJ, Solomon AP, Suresh D. Effect of palladium(II) complexes on NorA efflux pump inhibition and resensitization of fluoroquinolone-resistant Staphylococcus aureus: in vitro and in silico approach. Front Cell Infect Microbiol 2024; 13:1340135. [PMID: 38292858 PMCID: PMC10825952 DOI: 10.3389/fcimb.2023.1340135] [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: 11/17/2023] [Accepted: 12/20/2023] [Indexed: 02/01/2024] Open
Abstract
Staphylococcus aureus leads to diverse infections, and their treatment relies on the use of antibiotics. Nevertheless, the rise of antibiotic resistance poses an escalating challenge and various mechanisms contribute to antibiotic resistance, including modifications to drug targets, enzymatic deactivation of drugs, and increased efflux of antibiotics. Hence, the quest for innovative antimicrobial solutions has intensified in the face of escalating antibiotic resistance and the looming threat of superbugs. The NorA protein of S. aureus, classified as an efflux pump within the major facilitator superfamily, when overexpressed, extrudes various substances, including fluoroquinolones (such as ciprofloxacin) and quaternary ammonium. Addressing this, the unexplored realm of inorganic and organometallic compounds in medicinal chemistry holds promise. Notably, the study focused on investigating two different series of palladium-based metal complexes consisting of QSL_PA and QSL_PB ligands to identify a potent NorA efflux pump inhibitor that can restore the susceptibility to fluoroquinolone antibiotics. QSL_Pd5A was identified as a potent efflux pump inhibitor from the real-time efflux assay. QSL_Pd5A also resensitized SA1199B to ciprofloxacin at a low concentration of 0.125 µg/mL without elucidating cytotoxicity on the NRK-62E cell line. The in vitro findings were substantiated by docking results, indicating favorable interactions between QSL_Pd5A and the NorA efflux pump.
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Affiliation(s)
- Rajaramon Shobana
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Jaffer Hussain Thahirunnisa
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Selvam Sivaprakash
- Organometallics and Catalysis Laboratory, Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu, India
| | - Arlin Jose Amali
- Organometallics and Catalysis Laboratory, Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu, India
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Devarajan Suresh
- Organometallics and Catalysis Laboratory, Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu, India
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13
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Tallarita R, Jacobsen LM, Elvers BJ, Richter S, Bandaru SSM, Correia JV, Schulzke C. Synthesis of Seven Indolizine-Derived Pentathiepines: Strong Electronic Structure Response to Nitro Substitution in Position C-9. Molecules 2023; 29:216. [PMID: 38202800 PMCID: PMC10780577 DOI: 10.3390/molecules29010216] [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: 11/30/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Seven new 1,2,3,4,5-pentathiepino[6,7-a]indolizines were synthesized in which the pentathiepine moieties bear an indolizine backbone that is derivatized from C-H to F-, Cl-, Br-, I-, NO2-, and CH3-substitutions, respectively, in a meta position relative to the aza group on the pyridine moiety. Their preparation took place via two common steps: (i) a Sonogashira coupling between (4-substituted) 2-bromo- or 2-chloropyridines and propynyl 3,3-diethylacetal, and (ii) a ring closing reaction mediated by a molybdenum oxo-bistetrasulfido complex and elemental sulfur. The latter simultaneously facilitates the 1,2,3,4,5-pentathiepino chain/ring- and indolizine ring-formations. The fluoro derivative was addressed with 2-bromo-5-aminopyridine as the starting material via a Sandmeyer reaction. The iodo derivative was obtained from 5-bromo-2-alkynylpiridine using a metal-assisted variation of the Finkelstein reaction. The requirement to explore different reaction conditions and the varied respective yields of the final products are discussed. The influence of the distinct substitutions on the pyridine moieties, their electronic structures, and respective chemical properties was investigated through a set of spectroscopic/analytical characterizations. Intriguingly, in all cases, the nitro-substituted derivative exhibited a distinct behavior compared to the six other investigated derivatives, which was also addressed computationally. All seven new pentathiepines were crystallized, and their respective molecular structures were determined using single crystal X-ray diffraction. These structures are compared and discussed as are their respective packing patterns.
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Affiliation(s)
| | | | | | | | | | | | - Carola Schulzke
- Bioinorganic Chemistry, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17489 Greifswald, Germany; (R.T.); (L.M.J.); (B.J.E.); (S.R.); (S.S.M.B.); (J.V.C.)
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14
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Rossi R, Mainardi E, Vizzarri F, Corino C. Verbascoside-Rich Plant Extracts in Animal Nutrition. Antioxidants (Basel) 2023; 13:39. [PMID: 38247465 PMCID: PMC10812750 DOI: 10.3390/antiox13010039] [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: 11/15/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024] Open
Abstract
In recent years, the search for dietary intervention with natural products able to sustain animal health and decrease environmental impact, has raised the number of studies pertaining to the use of plants' secondary metabolites. In fact, in livestock, there is a clear relationship between the animals' antioxidant status and the onset of some diseases that negatively affect animal welfare, health, and productive performance. An interesting compound that belongs to the secondary metabolites family of plants, named phenylpropanoids, is verbascoside. The genus Verbascum, which includes more than 233 plant species, is the genus in which this compound was first identified, but it has also been found in other plant extracts. Verbascoside exhibits several properties such as antioxidant, anti-inflammatory, chemopreventive, and neuroprotective properties, that have been evaluated mainly in in vitro studies for human health. The present work reviews the literature on the dietary integration of plant extracts containing verbascoside in livestock. The effects of dietary plant extracts containing verbascoside on the productive performance, antioxidant status, blood parameters, and meat quality in several animal species were evaluated. The present data point out that dietary plant extracts containing verbascoside appear to be a favorable dietary intervention to enhance health, antioxidant status, and product quality in livestock.
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Affiliation(s)
- Raffaella Rossi
- Department of Veterinary Medicine and Animal Science, Università Degli Studi di Milano, Via Dell’Università 6, 26900 Lodi, Italy; (E.M.); (C.C.)
| | - Edda Mainardi
- Department of Veterinary Medicine and Animal Science, Università Degli Studi di Milano, Via Dell’Università 6, 26900 Lodi, Italy; (E.M.); (C.C.)
| | - Francesco Vizzarri
- National Agricultural and Food Centre Nitra, Hlohovecká 2, 95141 Lužianky, Slovakia;
| | - Carlo Corino
- Department of Veterinary Medicine and Animal Science, Università Degli Studi di Milano, Via Dell’Università 6, 26900 Lodi, Italy; (E.M.); (C.C.)
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15
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Baptista F, Campos J, Costa-Silva V, Pinto AR, Saavedra MJ, Ferreira LM, Rodrigues M, Barros AN. Nutraceutical Potential of Lentinula edodes' Spent Mushroom Substrate: A Comprehensive Study on Phenolic Composition, Antioxidant Activity, and Antibacterial Effects. J Fungi (Basel) 2023; 9:1200. [PMID: 38132800 PMCID: PMC10744564 DOI: 10.3390/jof9121200] [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: 10/11/2023] [Revised: 11/29/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Lentinula edodes, commonly known as shiitake mushroom, is renowned for its potential health advantages. This research delves into the often-overlooked by-product of shiitake cultivation, namely spent mushroom substrate (SMS), to explore its nutraceutical properties. The SMS samples were collected and subjected to different extraction methods, namely short or long agitation, and ultrasound-assisted extractions using different temperatures and distilled water or a 50% (v/v) ethanol as solvents. The extracts were tested for phenolic content (total phenols, ortho-diphenols, and flavonoids), antioxidant capacity (DPPH, 2,2-diphenyl-1 picrylhydrazyl; ABTS, 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid; and FRAP, ferric reducing antioxidant power), and antibacterial activity. The different extraction methods revealed substantial variations (p < 0.05) in phenolic composition and antioxidant capacity. The highest phenolic content and antioxidant capacity were achieved using 24 h extraction, agitation, 50 °C, and ethanol as the solvent. Furthermore, the extracted compounds displayed antibacterial activity in specific tested bacterial strains. This study highlights the nutraceutical potential of L. edodes' SMS, positioning it as a valuable dietary supplement for animal nutrition, with emphasis on its prebiotic properties. Hence, this research unveils the promising health benefits of SMS in both human and animal nutrition.
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Affiliation(s)
- Filipa Baptista
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
| | - Joana Campos
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
| | - Valéria Costa-Silva
- CECAV—Animal and Veterinary Research Centre, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal;
| | - Ana Rita Pinto
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
| | - Maria José Saavedra
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
| | - Luis Mendes Ferreira
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
| | - Miguel Rodrigues
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
| | - Ana Novo Barros
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University de Trás-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (J.C.); (A.R.P.); (M.J.S.); (L.M.F.); (M.R.)
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16
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Song K, Chen L, Suo N, Kong X, Li J, Wang T, Song L, Cheng M, Guo X, Huang Z, Huang Z, Yang Y, Tian X, Choo SW. Whole-transcriptome analysis reveals mechanisms underlying antibacterial activity and biofilm inhibition by a malic acid combination (MAC) in Pseudomonas aeruginosa. PeerJ 2023; 11:e16476. [PMID: 38084141 PMCID: PMC10710775 DOI: 10.7717/peerj.16476] [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: 06/23/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023] Open
Abstract
Background Pseudomonas aeruginosa is a highly prevalent bacterial species known for its ability to cause various infections and its remarkable adaptability and biofilm-forming capabilities. In earlier work, we conducted research involving the screening of 33 metabolites obtained from a commercial source against two prevalent bacterial strains, Escherichia coli and Staphylococcus aureus. Through screening assays, we discovered a novel malic acid combination (MAC) consisting of malic acid, citric acid, glycine, and hippuric acid, which displayed significant inhibitory effects. However, the precise underlying mechanism and the potential impact of the MAC on bacterial biofilm formation remain unknown and warrant further investigation. Methods To determine the antibacterial effectiveness of the MAC against Pseudomonas aeruginosa, we conducted minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques were employed to observe bacterial morphology and biofilm formation. We further performed a biofilm inhibition assay to assess the effect of the MAC on biofilm formation. Whole-transcriptome sequencing and bioinformatics analysis were employed to elucidate the antibacterial mechanism of the MAC. Additionally, the expression levels of differentially expressed genes were validated using the real-time PCR approach. Results Our findings demonstrated the antibacterial activity of the MAC against P. aeruginosa. SEM analysis revealed that the MAC can induce morphological changes in bacterial cells. The biofilm assay showed that the MAC could reduce biofilm formation. Whole-transcriptome analysis revealed 1093 differentially expressed genes consisting of 659 upregulated genes and 434 downregulated genes, in response to the MAC treatment. Mechanistically, the MAC inhibited P. aeruginosa growth by targeting metabolic processes, secretion system, signal transduction, and cell membrane functions, thereby potentially compromising the survival of this human pathogen. This study provides valuable insights into the antibacterial and antibiofilm activities of the MAC, a synergistic and cost-effective malic acid combination, which holds promise as a potential therapeutic drug cocktail for treating human infectious diseases in the future.
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Affiliation(s)
- Kunping Song
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Li Chen
- Universiti Malaya, Institute of Biological Sciences, Faculty of Science, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Nanhua Suo
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Xinyi Kong
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Juexi Li
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Tianyu Wang
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Lanni Song
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
| | - Mengwei Cheng
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
| | - Xindian Guo
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Zhenghe Huang
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Zichen Huang
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Yixin Yang
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
| | - Xuechen Tian
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
| | - Siew Woh Choo
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
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17
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Garza-Cervantes JA, Mendiola-Garza G, León-Buitimea A, Morones-Ramírez JR. Synergistic antibacterial effects of exopolysaccharides/nickel-nanoparticles composites against multidrug-resistant bacteria. Sci Rep 2023; 13:21519. [PMID: 38057583 PMCID: PMC10700344 DOI: 10.1038/s41598-023-48821-y] [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: 08/17/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023] Open
Abstract
The need for an alternative treatment to fight infectious diseases caused by antibiotic-resistant bacteria is increasing. A possible way to overcome bacterial resistance to antibiotics is by reintroducing commonly used antibiotics with a sensitizer capable of enhancing their antimicrobial effect in resistant bacteria. Here, we use a composite composed of exopolysaccharide capped-NiO NPs, with antimicrobial effects against antibiotic-resistant Gram-positive and Gram-negative bacteria. It potentiated the antimicrobial effects of four different antibiotics (ampicillin, kanamycin, chloramphenicol, and ciprofloxacin) at lower concentrations than their minimal inhibitory concentrations. We observed that the Ni-composite synergistically enhanced, fourfold, the antibacterial effect of kanamycin and chloramphenicol against multidrug-resistant Staphylococcus aureus and Pseudomonas aeruginosa, as well as ampicillin against multidrug-resistant Staphylococcus aureus, and ciprofloxacin against multidrug-resistant Pseudomonas aeruginosa by eightfold. We also found that Ni-composite could not inhibit biofilm synthesis on the tested bacterial strains. Our results demonstrated the possibility of using metal nanoparticles, like NiO, as a sensitizer to overcome bacterial antibiotic resistance.
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Affiliation(s)
- Javier A Garza-Cervantes
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, 66455, San Nicolás de los Garza, NL, Mexico
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, 66629, Apodaca, Nuevo León, Mexico
| | - Gricelda Mendiola-Garza
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, 66455, San Nicolás de los Garza, NL, Mexico
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, 66629, Apodaca, Nuevo León, Mexico
| | - Angel León-Buitimea
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, 66455, San Nicolás de los Garza, NL, Mexico
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, 66629, Apodaca, Nuevo León, Mexico
| | - José Rubén Morones-Ramírez
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, 66455, San Nicolás de los Garza, NL, Mexico.
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, 66629, Apodaca, Nuevo León, Mexico.
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18
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Yaderets V, Karpova N, Glagoleva E, Shibaeva A, Dzhavakhiya V. Bacillus subtilis RBT-7/32 and Bacillus licheniformis RBT-11/17 as New Promising Strains for Use in Probiotic Feed Additives. Microorganisms 2023; 11:2729. [PMID: 38004741 PMCID: PMC10672880 DOI: 10.3390/microorganisms11112729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/24/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
The normal functioning of a gastrointestinal microflora in poultry and livestock is of significant importance, since its imbalance negatively influences an organism's functions. In this study, the UV mutagenesis and selection were used to obtain two Bacillus strains possessing antagonistic activity towards Escherichia coli and Staphylococcus aureus, and their potential as a probiotic feed additive was evaluated. Compared to the parental strains, the ability of B. subtilis RBT-7/32 and B. licheniformis RBT-11/17 strains to suppress E. coli increased by 77 and 63%, respectively; the corresponding ability of these strains to suppress S. aureus increased by 80 and 79%, respectively. RBT-11/17 could not utilize microcrystalline cellulose and carboxymethyl cellulose, whereas cellulolytic activity of RBT-7/32 was doubled compared to the initial strain. The amylolytic activity of new strains was increased by 40%. Cultivation of strains on media containing soybean, pea, and corn meal did not provide any difference in the biomass production compared to the control. The heating of a water suspension of a dried biomass of the strains for 10-20 min at 80 and 100 °C or incubation in water solutions of citric, ascorbic, acetic, and formic acids (pH 3.0) for 3 and 24 h at 40 °C did not provide any negative influence on the spore survivability. Both strains were evaluated for their resistance to a number of veterinary antibiotics. Thus, RBT-7/32 and RBT-11/17 strains have good prospects for use in feed additives.
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Affiliation(s)
- Vera Yaderets
- Laboratory of Biotechnology of Industrial Microorganisms, Department of Biotechnology and Technology of Bioorganic Synthesis Products, Russian Biotechnological University (ROSBIOTECH), Moscow 125080, Russia; (N.K.); (E.G.); (A.S.)
| | | | | | | | - Vakhtang Dzhavakhiya
- Laboratory of Biotechnology of Industrial Microorganisms, Department of Biotechnology and Technology of Bioorganic Synthesis Products, Russian Biotechnological University (ROSBIOTECH), Moscow 125080, Russia; (N.K.); (E.G.); (A.S.)
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19
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Asfaw A, Lulekal E, Bekele T, Debella A, Meresa A, Sisay B, Degu S, Abebe A. Antibacterial and phytochemical analysis of traditional medicinal plants: An alternative therapeutic Approach to conventional antibiotics. Heliyon 2023; 9:e22462. [PMID: 38045177 PMCID: PMC10689945 DOI: 10.1016/j.heliyon.2023.e22462] [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: 07/22/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 12/05/2023] Open
Abstract
The purpose of this study was to carry out antibacterial and phytochemical analyses on six selected medicinal plants that have been traditionally used by the local people to treat and control different diseases. The antibacterial activities of methanolic extracts of these plants were assessed using the Agar well diffusion and Microtiter broth dilution methods. The root extract of Andrachne aspera showed significantly (p < 0.05) highest mean zone of inhibition at concentrations of 100 mg/ml (33 ± 0.17) and 200 mg/ml (33.5 ± 0.84) against S. epidermidis. The second highest mean zone of inhibition (24.8 ± 0.41) was recorded by Dichrostachys cinerea leaf extract against S. epidermidis at 200 mg/ml concentration. The minimum inhibitory concentrations 1.0 ± 0.0 was recorded by Andrachne aspera against E. faecalis and 2.0 ± 0.0 against S. aureus by Dichrostachys cinerea. The preliminary phytochemical analysis showed that Andrachne aspera and Dichrostachys cinerea contained strong concentration of Polyphenols and Flavonoids. Therefore, these two medicinal plant species have promising potential for further detailed investigations, including safety tests, characterization and isolation of bioactive secondary metabolites for the development of alternative drugs.
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Affiliation(s)
- Asaye Asfaw
- Department of Natural Resource Management, Debre Berhan University, Ethiopia
- Plant Biology and Biodiversity Management, Addis Ababa University, Ethiopia
| | - Ermias Lulekal
- Plant Biology and Biodiversity Management, Addis Ababa University, Ethiopia
| | - Tamrat Bekele
- Plant Biology and Biodiversity Management, Addis Ababa University, Ethiopia
| | - Asfaw Debella
- Ethiopian Public Health Institute, Traditional Medicine, Directorate, Ethiopia
| | - Asfaw Meresa
- Ethiopian Public Health Institute, Traditional Medicine, Directorate, Ethiopia
| | - Bihonegn Sisay
- Ethiopian Public Health Institute, Traditional Medicine, Directorate, Ethiopia
| | - Sileshi Degu
- Ethiopian Public Health Institute, Traditional Medicine, Directorate, Ethiopia
| | - Abiy Abebe
- Ethiopian Public Health Institute, Traditional Medicine, Directorate, Ethiopia
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20
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Keyvani‐Ghamsari S, Rahimi M, Khorsandi K. An update on the potential mechanism of gallic acid as an antibacterial and anticancer agent. Food Sci Nutr 2023; 11:5856-5872. [PMID: 37823155 PMCID: PMC10563697 DOI: 10.1002/fsn3.3615] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/15/2023] [Accepted: 07/25/2023] [Indexed: 10/13/2023] Open
Abstract
Drug resistance to antibacterial and anticancer drugs is one of the most important global problems in the treatment field that is constantly expanding and hinders the recovery and survival of patients. Therefore, it is necessary to identify compounds that have antibacterial and anticancer properties or increase the effectiveness of existing drugs. One of these approaches is using natural compounds that have few side effects and are effective. Gallic acid (GA) has been identified as one of the most important plant polyphenols that health-promoting effects in various aspects such as bacterial and viral infections, cancer, inflammatory, neuropsychological, gastrointestinal, and metabolic disease. Various studies have shown that GA inhibits bacterial growth by altering membrane structure, and bacterial metabolism, and inhibits biofilm formation. Also, GA inhibits cancer cell growth by targeting different signaling pathways in apoptosis, increasing reactive oxygen species (ROS) production, targeting the cell cycle, and inhibiting oncogenes and matrix metalloproteinases (MMPs) expression. Due to the powerful function of GA against bacteria and cancer cells. In this review, we describe the latest findings in the field of the sources and chemical properties of GA, its pharmacological properties and bioavailability, the antibacterial and anticancer activities of GA, and its derivatives alone, in combination with other drugs and in the form of nanoformulation. This review can be a comprehensive perspective for scientists to use medicinal compounds containing GA in future research and expand its clinical applications.
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Affiliation(s)
- Saeedeh Keyvani‐Ghamsari
- Clinical Cares and Health Promotion Research Center, Karaj BranchIslamic Azad UniversityKarajIran
| | - Maryam Rahimi
- Clinical Cares and Health Promotion Research Center, Karaj BranchIslamic Azad UniversityKarajIran
| | - Khatereh Khorsandi
- Department of Photodynamic, Medical Laser Research CenterYara Institute, ACECRTehranIran
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21
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Hamzah H, Nuryastuti T, Rahmah W, Chabib L, Syamsul ES, Lestari D, Jabbar A, Tunjung Pratiwi SU. Molecular Docking Study of the C-10 Massoia Lactone Compound as an Antimicrobial and Antibiofilm Agent against Candida tropicalis. ScientificWorldJournal 2023; 2023:6697124. [PMID: 37766863 PMCID: PMC10522437 DOI: 10.1155/2023/6697124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/14/2023] [Accepted: 08/26/2023] [Indexed: 09/29/2023] Open
Abstract
Antimicrobial resistance is now considered a global health problem because it reduces the effectiveness of antimicrobial drugs. According to the World Health Organization (WHO), the highest mortality rate is associated with infections caused by multidrug-resistant microorganisms, with approximately 700,000 deaths worldwide each year. The aim of this study was to determine the potential of C-10 massoia lactone to inhibit the growth of fungi and C. tropicalis biofilm, and molecular docking studies were performed to determine the nature of the inhibition. The study was conducted using the microdilution method for antifungal and antibiofilm testing and designed with a molecular docking approach. Furthermore, an analysis using the scanning electron microscope (SEM) was performed to evaluate the mechanism of effect. The results obtained showed that C-10 massoia lactone can inhibit the growth of fungi by 84.21% w/v. Meanwhile, the growth of C. tropicalis biofilm in the intermediate phase was 80.23% w/v and in the mature phase was 74.23% w/v. SEM results showed that C-10 massoia lactone damaged the EPS matrix of C. tropicalis so that hyphal formation was hindered due to damage to fungal cells, resulting in a decrease in attachment, density, and lysis of C. tropicalis fungal cells. Based on molecular docking tests, C-10 massoia lactone was able to inhibit biofilm formation without affecting microbial growth, while docking C-10 massoia lactone showed a significant binding and has the potential as an antifungal agent. In conclusion, the C-10 massoia lactone compound has the potential as an antibiofilm against C. tropicalis, so it can become a new antibiofilm agent.
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Affiliation(s)
- Hasyrul Hamzah
- Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
- Faculty of Pharmacy, Universitas Muhammadiyah Kalimantan Timur, Samarinda, Kalimantan Timur 75124, Indonesia
- Indonesian Biofilm Research Collaboration Centre (IBRCC), Farmako Street, Sekip Utara, Yogyakarta 55281, Indonesia
| | - Titik Nuryastuti
- Indonesian Biofilm Research Collaboration Centre (IBRCC), Farmako Street, Sekip Utara, Yogyakarta 55281, Indonesia
- Department of Microbiology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Farmako Street, North Sekip, Yogyakarta 55281, Indonesia
| | - Widya Rahmah
- Indonesian Biofilm Research Collaboration Centre (IBRCC), Farmako Street, Sekip Utara, Yogyakarta 55281, Indonesia
- Department of Microbiology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Farmako Street, North Sekip, Yogyakarta 55281, Indonesia
| | - Lutfi Chabib
- Department of Pharmacy, Islamic University of Indonesia, Yogyakarta, Indonesia
| | - Eka Siswanto Syamsul
- Department of Pharmacy, Sekolah Tinggi Ilmu Kesehatan Samarinda, Samarinda, East Borneo, Indonesia
| | - Dwi Lestari
- Faculty of Pharmacy, Universitas Muhammadiyah Kalimantan Timur, Samarinda, Kalimantan Timur 75124, Indonesia
| | - Asriullah Jabbar
- Indonesian Biofilm Research Collaboration Centre (IBRCC), Farmako Street, Sekip Utara, Yogyakarta 55281, Indonesia
- Department of Pharmacy, Faculty of Pharmacy, Haluoleo University, Kendari 93232, Indonesia
| | - Sylvia Utami Tunjung Pratiwi
- Indonesian Biofilm Research Collaboration Centre (IBRCC), Farmako Street, Sekip Utara, Yogyakarta 55281, Indonesia
- Faculty of Pharmacy, Universitas Gadjah Mada, North Sekip, Yogyakarta 55281, Indonesia
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22
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Chimi LY, Bisso BN, Njateng GSS, Dzoyem JP. Antibiotic-Potentiating Effect of Some Bioactive Natural Products against Planktonic Cells, Biofilms, and Virulence Factors of Pseudomonas aeruginosa. BIOMED RESEARCH INTERNATIONAL 2023; 2023:9410609. [PMID: 37663785 PMCID: PMC10470073 DOI: 10.1155/2023/9410609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/25/2023] [Accepted: 08/12/2023] [Indexed: 09/05/2023]
Abstract
Background Pseudomonas aeruginosa is an opportunistic human pathogen that causes infections that are mediated by both virulence factor production and biofilm formation. In addition, many antibiotics are increasingly losing their efficacy due to the development of resistance. The screening of potentially bioactive natural compounds that have both antivirulence and antibiofilm activities to enhance antibiotic efficacy and reverse antibiotic resistance is a good strategy to overcome these issues. In this study, the antibacterial, antibiofilm, and antivirulence factor activities of some bioactive natural products in combination with conventional antibiotics were evaluated against clinical isolates of P. aeruginosa. Methods The broth microdilution method was used to determine the antibacterial and antibiofilm activities. The checkerboard method was used to evaluate the combination interactions. Spectrophotometric and agar plate techniques were used to assess the effect of the combination on the pyocyanin production and the motility in P. aeruginosa ATCC 27853 strain. Results Out of the eighteen combinations tested, ten exhibited synergistic effects against planktonic cells, seven against biofilm inhibition, and five against the eradication of mature biofilm of P. aeruginosa biofilm. The best synergistic effect was the association of amikacin and sinapic acid against planktonic cells (FICI = 0.08) with a 70-fold reduction in the MIC value of amikacin. The same combination showed significant synergistic inhibition of biofilm formation (FICI = 0.1) and biofilm eradication (FICI = 0.15) reducing the MBIC and MBEC of amikacin by 32-fold. Some selected synergistic combinations showed statistically significant differences (p < 0.01 or p < 0.001) in the inhibition of virulence factors compared to the antimicrobials alone. Conclusion In summary, this study revealed sinapic acid as an antibiotic adjuvant and antivirulence compound to overcome P. aeruginosa infections. This finding indicates that the combinations of amikacin plus sinapic acid, ceftazidime plus thymol, and norfloxacin plus curcumin could be considered promising candidates for the development of combination therapies targeting virulence factors against P. aeruginosa infections.
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Affiliation(s)
- Larissa Yetendje Chimi
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Borel Ndezo Bisso
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | | | - Jean Paul Dzoyem
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
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23
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Chimi SF, Ewonkem MB, Tiakouang EN, Moto JO, Adjieufack AI, Deussom PM, Mbock MA, Wansi DJ, Toze AFA. In vitro and in silico studies of antibacterial activities of secofriedelane derivatives from Senna alata (L) Roxb. Nat Prod Res 2023:1-14. [PMID: 37590089 DOI: 10.1080/14786419.2023.2247537] [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: 01/24/2023] [Revised: 07/21/2023] [Accepted: 08/08/2023] [Indexed: 08/19/2023]
Abstract
In this study, six compounds were obtained from a methanolic extract of air-dried leaves of Senna alata and one of them, a triterpenoid (secofriedelane) named as 7-(2-carboxyethyl)-3, 4b, 6a, 8, 10a, 12a-hexamethyl-8-vinyloctadecahydrochrysene-3-carboxylic acid (5) was isolated for the first time from this plant. Then, its chemical structure was detailed and characterised by FT-IR, 1H and 13C- NMR and ESI-MS. Besides, two chemical-modified derivatives of secofriedelane (5a, 5b) were synthesised by methylation and allylation reactions, respectively, and their in vitro antibacterial activities were also evaluated. The results revealed that all the triterpenes showed, against gram-positive and -negative bacterial strains, good and moderate antibacterial activities with bactericidal effects that were enhanced by the methyl groups and altered with the allyl ones. Moreover, the molecular docking results of 5, 5a and 5b in the DNA gyrase (2XCT) active site showed that triterpene 5 has a good score very close to reference (ciprofloxacin).
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Affiliation(s)
- Simplice F Chimi
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
| | - Monique B Ewonkem
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
| | - Eunice N Tiakouang
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
| | - Jean O Moto
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
| | - Abel I Adjieufack
- Physical and Theoretical Chemistry Laboratory, University of Yaounde I, Yaounde, Cameroon
| | - Pascaline M Deussom
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
| | - Michel A Mbock
- Department of Biochemistry, Laboratory of Biochemistry, Faculty of Science, University of Douala, Douala, Cameroon
| | - Duplex J Wansi
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
| | - Alfred F A Toze
- Department of Chemistry, Faculty of Sciences, University of Douala, Douala, Cameroon
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24
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Moreno Cardenas C, Çiçek SS. Structure-dependent activity of plant natural products against methicillin-resistant Staphylococcus aureus. Front Microbiol 2023; 14:1234115. [PMID: 37649631 PMCID: PMC10463185 DOI: 10.3389/fmicb.2023.1234115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 07/14/2023] [Indexed: 09/01/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the major causes for nosocomial infections and has been classified as "high priority pathogen" by the World Health Organization. Its ability to develop resistances has been a challenge for the last decades and is still a threat to health care systems, as strains with resistances to the so-called drugs of last resort have been discovered. Therefore, new antibiotics are urgently needed. Natural products are an important source for the development of new drugs, thereby mostly serving as lead compounds for further modification. In this review, the data on plant natural products with reported anti-MRSA activity until the end of 2022 is discussed, highlighting the most effective drugs with respect to their inhibitory concentrations as well as with regard to eventual synergistic effects with existing antibiotics. In the latter sense, the class of alkaloids must be mentioned, exhibiting additive or synergistic effects by inhibiting bacterial efflux pumps. With regard to the antibiotic activity, phloroglucinol derivatives certainly belong to the most promising compounds, revealing several candidates with remarkable effects, e.g., lupulone, ivesinol, rhodomyrtone, aspidinol, or hyperforin. Also, the class of terpenoids yielded noteworthy compounds, such as the sesquiterpene lactones parthenolide and lactopicrin as well as acetophenone sesquiterpenes and sphaerodiene type diterpenoids, respectively. In addition, pronounced effects were observed for the macrolide neurymenolide A and three flavonol dicoumaroylrhamnosides.
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Affiliation(s)
| | - Serhat S. Çiçek
- Department of Pharmaceutical Biology, Institute of Pharmacy, Kiel University, Kiel, Germany
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25
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Musiejuk M, Kafarski P. Engineering of Nisin as a Means for Improvement of Its Pharmacological Properties: A Review. Pharmaceuticals (Basel) 2023; 16:1058. [PMID: 37630973 PMCID: PMC10459688 DOI: 10.3390/ph16081058] [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: 06/21/2023] [Revised: 07/17/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Lantibiotics are believed to have a conceivable potential to be used as therapeutics, especially against clinically resistant bacterial strains. However, their low solubility and poor stability under physiological conditions limit their availability for clinical studies and further pharmaceutical commercialization. Nisin is a readily available and cheap lanthipeptide and thus serves as a good model in the search for the tools to engineer lantibiotics with improved pharmacological properties. This review aims to address technologies that can be applied to alter and enhance the antimicrobial activity, antibacterial spectrum and physicochemical properties (solubility, solution stability and protease resistance) of nisin. There are basically two general means to obtain nisin analogs-protein engineering and chemical functionalization of this antibiotic. Although bioengineering techniques have been well developed and enable the creation of nisin mutants of variable structures and properties, they are lacking spectacular effects so far. Chemical modifications of nisin based on utilization of the reactivity of its free amino and carboxylic moieties, as well as reactivity of the double bonds of its dehydroamino acids, are in their infancy.
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Affiliation(s)
| | - Paweł Kafarski
- Faculty of Agriculture and Forestry, University of Warmia and Mazury, pl. Łódzki 4, 10-957 Olsztyn, Poland;
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26
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Fang F, Xu H, Chai B, Li D, Nie L, Wen Z, Yu Z, Zheng J, Zhang H. Neobavaisoflavone Inhibits Biofilm Formation and α-Toxin Activity of Staphylococcus aureus. Curr Microbiol 2023; 80:258. [PMID: 37358668 DOI: 10.1007/s00284-023-03355-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/29/2023] [Indexed: 06/27/2023]
Abstract
Neobavaisoflavone had antimicrobial activities against Gram-positive multidrug-resistant (MDR) bacteria, but the effect of neobavaisoflavone on the virulence and biofilm formation of S. aureus has not been explored. The present study aimed to investigate the possible inhibitory effect of neobavaisoflavone on the biofilm formation and α-toxin activity of S. aureus. Neobavaisoflavone presented strong inhibitory effect on the biofilm formation and α-toxin activity of both methicillin-sensitive S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA) strains at 25 µM, but did not affect the growth of S. aureus planktonic cells. Genetic mutations were identified in four coding genes, including cell wall metabolism sensor histidine kinase walK, RNA polymerase sigma factor rpoD, tetR family transcriptional regulator, and a hypothetical protein. The mutation of WalK (K570E) protein was identified and verified in all the neobavaisoflavone-induced mutant S. aureus isolates. The ASN501, LYS504, ILE544 and GLY565 of WalK protein act as hydrogen acceptors to form four hydrogen bonds with neobavaisoflavone by molecular docking analysis, and TRY505 of WalK protein contact with neobavaisoflavone to form a pi-H bond. In conclusion, neobavaisoflavone had excellent inhibitory effect on the biofilm formation and α-toxin activity of S. aureus. The WalK protein might be a potential target of neobavaisoflavone against S. aureus.
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Affiliation(s)
- Fang Fang
- Department of Infectious Diseases and Department of General Medicine, the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Hongbo Xu
- Department of Critical Care Medicine and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Bao Chai
- Department of Dermatology, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Duoyun Li
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Lei Nie
- Department of Infectious Diseases and Department of General Medicine, the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Zewen Wen
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Zhijian Yu
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China
| | - Jinxin Zheng
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China.
| | - Haigang Zhang
- Department of Critical Care Medicine and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, 518052, China.
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27
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Nurzynska A, Klimek K, Michalak A, Dos Santos Szewczyk K, Arczewska M, Szalaj U, Gagos M, Ginalska G. Do Curdlan Hydrogels Improved with Bioactive Compounds from Hop Exhibit Beneficial Properties for Skin Wound Healing? Int J Mol Sci 2023; 24:10295. [PMID: 37373441 DOI: 10.3390/ijms241210295] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Chronic wounds, among others, are mainly characterized by prolonged inflammation associated with the overproduction of reactive oxygen species and pro-inflammatory cytokines by immune cells. As a consequence, this phenomenon hinders or even precludes the regeneration process. It is known that biomaterials composed of biopolymers can significantly promote the process of wound healing and regeneration. The aim of this study was to establish whether curdlan-based biomaterials modified with hop compounds can be considered as promising candidates for the promotion of skin wound healing. The resultant biomaterials were subjected to an evaluation of their structural, physicochemical, and biological in vitro and in vivo properties. The conducted physicochemical analyses confirmed the incorporation of bioactive compounds (crude extract or xanthohumol) into the curdlan matrix. It was found that the curdlan-based biomaterials improved with low concentrations of hop compounds possessing satisfactory hydrophilicity, wettability, porosity, and absorption capacities. In vitro, tests showed that these biomaterials were non-cytotoxic, did not inhibit the proliferation of skin fibroblasts, and had the ability to inhibit the production of pro-inflammatory interleukin-6 by human macrophages stimulated with lipopolysaccharide. Moreover, in vivo studies showed that these biomaterials were biocompatible and could promote the regeneration process after injury (study on Danio rerio larvae model). Thus, it is worth emphasizing that this is the first paper demonstrating that a biomaterial based on a natural biopolymer (curdlan) improved with hop compounds may have biomedical potential, especially in the context of skin wound healing and regeneration.
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Affiliation(s)
- Aleksandra Nurzynska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodzki 1 Street, 20-093 Lublin, Poland
| | - Katarzyna Klimek
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodzki 1 Street, 20-093 Lublin, Poland
| | - Agnieszka Michalak
- Independent Laboratory of Behavioral Studies, Medical University of Lublin, Chodzki 4 a Street, 20-093 Lublin, Poland
| | | | - Marta Arczewska
- Department of Biophysics, University of Life Sciences, Akademicka 13 Street, 20-033 Lublin, Poland
- Department of Biophysics, Medical University of Lublin, Jaczewskiego 4 Street, 20-090 Lublin, Poland
| | - Urszula Szalaj
- Laboratory of Nanostructures, Polish Academy of Science, Sokolowska 29/37 Street, 01-142 Warsaw, Poland
- Faculty of Materials Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland
| | - Mariusz Gagos
- Department of Cell Biology, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Chodzki Street 1, 20-093 Lublin, Poland
| | - Grazyna Ginalska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodzki 1 Street, 20-093 Lublin, Poland
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Tian Y, Qi Y, Fang Y, Xu Z, Sun L, Dong Y, Ning G, Ye J. Near-Infrared Light-Responsive Multifunctional Photothermal/Photodynamic Titanium Diboride Nanocomposites for the Treatment of Antibiotic-Resistant Bacterial Infections. ACS APPLIED BIO MATERIALS 2023. [PMID: 37319103 DOI: 10.1021/acsabm.3c00290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Diseases caused by bacterial infection have resulted in serious harm to human health. It is crucial to develop a multifunctional antibiotic-independent antibacterial platform for combating drug-resistant bacteria. Herein, titanium diboride (TiB2) nanosheets integrated with quaternized chitosan (QCS) and indocyanine green (ICG) were successfully prepared as a synergetic photothermal/photodynamic antibacterial nanoplatform (TiB2-QCS-ICG). The TiB2-QCS-ICG nanocomposites exhibit effective photothermal conversion efficiency (24.92%) and excellent singlet oxygen (1O2) production capacity simultaneously under 808 nm near-infrared irradiation. QCS improved TiB2 stability and dispersion, while also enhancing adhesion to bacteria and further accelerating the destruction of bacteria by heat and 1O2. In vitro experiments indicated that TiB2-QCS-ICG had excellent antibacterial properties with an inhibition rate of 99.99% against Escherichia coli (E. coli) and methicillin-resistant Staphylococcus aureus (MRSA), respectively. More importantly, in vivo studies revealed that the nanoplatform can effectively inhibit bacterial infection and accelerate wound healing. The effective wound healing rate in the TiB2-QCS-ICG treatment group was 99.6% which was much higher than control groups. Taken together, the as-developed TiB2-QCS-ICG nanocomposite provides more possibilities to develop metal borides for antibacterial infection applications.
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Affiliation(s)
- Yiming Tian
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
| | - Ye Qi
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
| | - Yueguang Fang
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
| | - Zhitong Xu
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
| | - Lin Sun
- Department of Gastrointestinal Surgery, Dalian Municipal Central Hospital, 826 Southwest Road, Dalian 116033, P. R. China
| | - Yuesheng Dong
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
| | - Guiling Ning
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
- Engineering Laboratory of Boric and Magnesic Functional Material Preparative and Applied Technology, 2 Linggong Road, Dalian, Liaoning 116024, P. R. China
| | - Junwei Ye
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116012, P. R. China
- Engineering Laboratory of Boric and Magnesic Functional Material Preparative and Applied Technology, 2 Linggong Road, Dalian, Liaoning 116024, P. R. China
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Rajaramon S, David H, Sajeevan A, Shanmugam K, Sriramulu H, Dandela R, Solomon AP. Multi-functional approach in the design of smart surfaces to mitigate bacterial infections: a review. Front Cell Infect Microbiol 2023; 13:1139026. [PMID: 37287465 PMCID: PMC10242021 DOI: 10.3389/fcimb.2023.1139026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/03/2023] [Indexed: 06/09/2023] Open
Abstract
Advancements in biomedical devices are ingenious and indispensable in health care to save millions of lives. However, microbial contamination paves the way for biofilm colonisation on medical devices leading to device-associated infections with high morbidity and mortality. The biofilms elude antibiotics facilitating antimicrobial resistance (AMR) and the persistence of infections. This review explores nature-inspired concepts and multi-functional approaches for tuning in next-generation devices with antibacterial surfaces to mitigate resistant bacterial infections. Direct implementation of natural inspirations, like nanostructures on insect wings, shark skin, and lotus leaves, has proved promising in developing antibacterial, antiadhesive, and self-cleaning surfaces, including impressive SLIPS with broad-spectrum antibacterial properties. Effective antimicrobial touch surfaces, photocatalytic coatings on medical devices, and conventional self-polishing coatings are also reviewed to develop multi-functional antibacterial surfaces to mitigate healthcare-associated infections (HAIs).
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Affiliation(s)
- Shobana Rajaramon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Helma David
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Anusree Sajeevan
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Karthi Shanmugam
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Hrithiha Sriramulu
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Bhubaneswar, India
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
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Makky S, Abdelrahman F, Rezk N, Easwaran M, El-Shibiny A. Phages for treatment Pseudomonas aeruginosa infection. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 201:1-19. [PMID: 37770166 DOI: 10.1016/bs.pmbts.2023.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Pseudomonas aeruginosa is denoted as one of the highly threatening bacteria to the public health. It has acquired many virulent factors and resistant genes that make it difficult to control with conventional antibiotics. Thus, bacteriophage therapy (phage therapy) is a proposed alternative to antibiotics to fight against multidrug-resistant P. aeruginosa. Many phages have been isolated that exhibit a broad spectrum of activity against P. aeruginosa. In this chapter, the common virulent factors and the prevalence of antibiotic-resistance genes in P. aeruginosa were reported. In addition, recent efforts in the field of phage therapy against P. aeruginosa were highlighted, including wild-type phages, genetically modified phages, phage cocktails, and phage in combination with antibiotics against P. aeruginosa in the planktonic and biofilm forms. Recent regulations on phage therapy were also covered in this chapter.
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Affiliation(s)
- Salsabil Makky
- Center for Microbiology and Phage Therapy, Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, Egypt
| | - Fatma Abdelrahman
- Center for Microbiology and Phage Therapy, Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, Egypt
| | - Nouran Rezk
- Center for Microbiology and Phage Therapy, Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, Egypt
| | - Maheswaran Easwaran
- Department of Biomedical Engineering, Sethu Institute of Technology, Virudhunagar, Tamil Nadu, India
| | - Ayman El-Shibiny
- Center for Microbiology and Phage Therapy, Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, Egypt; Faculty of Environmental Agricultural Sciences, Arish University, Arish, Egypt.
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31
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Mehmood H, Akhtar T, Haroon M, Khalid M, Woodward S, Asghar MA, Baby R, Orfali R, Perveen S. Synthesis of Fluorinated Hydrazinylthiazole Derivatives: A Virtual and Experimental Approach to Diabetes Management. ACS OMEGA 2023; 8:11433-11446. [PMID: 37008089 PMCID: PMC10061536 DOI: 10.1021/acsomega.3c00265] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/07/2023] [Indexed: 06/19/2023]
Abstract
A novel series of fluorophenyl-based thiazoles was synthesized following the Hanztsch method. All of the compounds were initially verified with physical parameters (color, melting point, retardation factor (R f)), which were further confirmed by several spectroscopic methods, including ultraviolet-visible (UV-visible), Fourier-transform infrared (FTIR), 1H, 13C, 19F NMR, and high-resolution mass spectrometry (HRMS). The binding interactions of all compounds were studied using a molecular docking simulation approach. Furthermore, each compound was evaluated for its alpha(α)-amylase, antiglycation, and antioxidant potentials. The biocompatibility of all compounds was checked with an in vitro hemolytic assay. All synthesized scaffolds were found biocompatible with minimal lysis of human erythrocytes as compared to the standard Triton X-100. Among the tested compounds, the analogue 3h (IC50 = 5.14 ± 0.03 μM) was found to be a highly potent candidate against α-amylase as compared to the standard (acarbose, IC50 = 5.55 ± 0.06 μM). The compounds 3d, 3f, 3i, and 3k exhibited excellent antiglycation inhibition potential with their IC50 values far less than the standard amino guanidine (IC50 = 0.403 ± 0.001 mg/mL). The antidiabetic potential was further supported by docking studies. Docking studies revealed that all synthesized compounds exhibited various interactions along enzyme active sites (pi-pi, H-bonding, van der Waals) with varied binding energies.
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Affiliation(s)
- Hasnain Mehmood
- Department
of Chemistry, Mirpur University of Science
and Technology (MUST), Mirpur 10250, Azad Jammu and Kashmir, Pakistan
| | - Tashfeen Akhtar
- Department
of Chemistry, Mirpur University of Science
and Technology (MUST), Mirpur 10250, Azad Jammu and Kashmir, Pakistan
| | - Muhammad Haroon
- Department
of Chemistry, Mirpur University of Science
and Technology (MUST), Mirpur 10250, Azad Jammu and Kashmir, Pakistan
- Department
of Chemistry, Government Major Muhammad Afzal Khan (Shaheed), Boys
Degree College Afzalpur, Mirpur (Affiliated
with Mirpur University of Science and Technology (MUST)), Mirpur 10250, Azad Jammu and Kashmir, Pakistan
| | - Muhammad Khalid
- Institute
of Chemistry, Khwaja Fareed University of
Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
- Center
for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Simon Woodward
- GSK,
Carbon Neutral Laboratories for Sustainable Chemistry, University Park Nottingham, Nottingham NG7 2RD, U.K.
| | - Muhammad Adnan Asghar
- Department
of Chemistry, Division of Science and Technology, University of Education, Lahore 54770, Pakistan
| | - Rabia Baby
- Department
of Education, Sukkur IBA University, Sukkur 65200, Sindh, Pakistan
| | - Raha Orfali
- Department
of Pharmacognosy, Collage of Pharmacy, King
Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Shagufta Perveen
- Department
of Chemistry, School of Computer, Mathematical and Natural Sciences, Morgan State University, Baltimore, Maryland 21251, United States
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Phytochemical-Based Nanomaterials against Antibiotic-Resistant Bacteria: An Updated Review. Polymers (Basel) 2023; 15:polym15061392. [PMID: 36987172 PMCID: PMC10058650 DOI: 10.3390/polym15061392] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/27/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Antibiotic-resistant bacteria (ARB) is a growing global health threat, leading to the search for alternative strategies to combat bacterial infections. Phytochemicals, which are naturally occurring compounds found in plants, have shown potential as antimicrobial agents; however, therapy with these agents has certain limitations. The use of nanotechnology combined with antibacterial phytochemicals could help achieve greater antibacterial capacity against ARB by providing improved mechanical, physicochemical, biopharmaceutical, bioavailability, morphological or release properties. This review aims to provide an updated overview of the current state of research on the use of phytochemical-based nanomaterials for the treatment against ARB, with a special focus on polymeric nanofibers and nanoparticles. The review discusses the various types of phytochemicals that have been incorporated into different nanomaterials, the methods used to synthesize these materials, and the results of studies evaluating their antimicrobial activity. The challenges and limitations of using phytochemical-based nanomaterials, as well as future directions for research in this field, are also considered here. Overall, this review highlights the potential of phytochemical-based nanomaterials as a promising strategy for the treatment against ARB, but also stresses the need for further studies to fully understand their mechanisms of action and optimize their use in clinical settings.
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Liu M, Lv Q, Xu J, Liu B, Zhou Y, Zhang S, Shen X, Wang L. Isoflavone glucoside genistin, an inhibitor targeting Sortase A and Listeriolysin O, attenuates the virulence of Listeria monocytogenes in vivo and in vitro. Biochem Pharmacol 2023; 209:115447. [PMID: 36746262 DOI: 10.1016/j.bcp.2023.115447] [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: 08/24/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
As a common intracellular facultative anaerobic Gram-positive bacterium, Listeria monocytogenes (L. monocytogenes) exhibits strong resistance to extreme environments, such as low temperature and a wide range of pH values, causing contamination in food production and processing. Sortase A (SrtA) and listeriolysin O (LLO), two crucial virulence factors of L. monocytogenes, are widely recognized as potential targets for the development of anti-L. monocytogenes infection drugs. In this study, we found that genistin simultaneously inhibits the peptidase activity of SrtA and the hemolytic activity of LLO without affecting the growth of L. monocytogenes, alleviating concerns about developing resistance. Furthermore, we demonstrated that genistin reduces L. monocytogenes biofilm formation and invasion of human colorectal cancer (Caco-2) cells. Subsequent mechanistic studies revealed that genistin inhibited LLO-mediated Caco-2 cell damage by blocking LLO oligomerization. Fluorescence quenching assay revealed the potential binding mode of SrtA and LLO to genistin. Genistin might bind to the active pocket of SrtA through residues Leu33, Asn29, and Met40, interacting with D1 domain of LLO involved in oligomerization and pore formation through residues Asn259. Studies in infection models revealed that genistin reduces mortality and pathological damage in mice infected with L. monocytogenes. These results indicate that genistin is a promising anti-virulence agent that could be considered an alternative candidate for the treatment of L. monocytogenes infection.
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Affiliation(s)
- Minda Liu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China; Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, China
| | - Qianghua Lv
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China; Shandong Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, P.R.China; Key Laboratory of Livestock and Poultry Multi-omics of MARA, P.R.China
| | - Jingwen Xu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Baichen Liu
- The Second Bethune Clinical Medical College of Jilin University, Changchun 130012, Jilin, People's Republic of China
| | - Yonglin Zhou
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China; Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, China
| | - Siqi Zhang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China; Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, China
| | - Xue Shen
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China; Department of Food Science, College of Food Science and Engineering, Jilin University, Changchun, China.
| | - Lin Wang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China; Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, China.
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Patel HK, Gomes EN, Wu Q, Patel N, Kobayashi DY, Wang C, Simon JE. Volatile metabolites from new cultivars of catnip and oregano as potential antibacterial and insect repellent agents. FRONTIERS IN PLANT SCIENCE 2023; 14:1124305. [PMID: 36909430 PMCID: PMC9995836 DOI: 10.3389/fpls.2023.1124305] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Plant based natural products have been widely used as antibacterial and insect repellent agents globally. Because of growing resistance in bacterial plant pathogens and urban pests to current methods of control, combined with the long- and short-term negative impact of certain chemical controls in humans, non-target organisms, and the environment, finding alternative methods is necessary to prevent and/or mitigate losses caused by these pathogens and pests. The antibacterial and insect repellent activities of essential oils of novel cultivars of catnip (Nepeta cataria L. cv. CR9) and oregano (Origanum vulgare L. cv. Pierre) rich in the terpenes nepetalactone and carvacrol, respectively, were evaluated using the agar well diffusion assay and petri dish repellency assay. The essential oils exhibit moderate to high antibacterial activity against three plant pathogens, Pseudomonas cichorii, Pseudomonas syringae and Xanthomonas perforans of economic interest and the individual essential oils, their mixtures and carvacrol possess strong insect repellent activity against the common bed bug (Cimex lectularius L.), an urban pest of major significance to public health. In this study, the essential oils of catnip and oregano were determined to be promising candidates for further evaluation and development as antibacterial agents and plant-based insect repellents with applications in agriculture and urban pest management.
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Affiliation(s)
- Harna K. Patel
- New Use Agriculture and Natural Plant Products Program, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
| | - Erik Nunes Gomes
- New Use Agriculture and Natural Plant Products Program, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Federal Agency for Support and Evaluation of Graduate Education (CAPES), Ministry of Education of Brazil, Brasilia, DF, Brazil
| | - Qingli Wu
- New Use Agriculture and Natural Plant Products Program, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Nrupali Patel
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
| | - Donald Y. Kobayashi
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
| | - Changlu Wang
- Department of Entomology, Rutgers University, New Brunswick, NJ, United States
| | - James E. Simon
- New Use Agriculture and Natural Plant Products Program, Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Plant Biology, Rutgers University, New Brunswick, NJ, United States
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
- Center for Agricultural Food Ecosystems, Institute of Food, Nutrition & Health, Rutgers University, New Brunswick, NJ, United States
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Characterization of Autochthonous Strains from the Cecal Content of Creole Roosters for a Potential Use as Probiotics. Animals (Basel) 2023; 13:ani13030455. [PMID: 36766343 PMCID: PMC9913217 DOI: 10.3390/ani13030455] [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: 09/21/2022] [Revised: 12/29/2022] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Five strains (CLP2, CLP3, CLP4, CLP5, and CLP6) were isolated from the cecal content of Creole roosters fed without antibiotic growth promoters. Biochemical and morphological tests (negative catalase and oxidase) confirmed the presence of lactic acid bacteria. Additionally, considering the 16s RNA, Lactobacillus vaginalis (CLP2, CLP3, CLP5, and CLP6) and Lactobacillus reuteri (CLP4) were identified. All strains (mainly CLP4 and CLP5) showed variable and significant growth (p < 0.001) at different levels of pH. Likewise, all bacterial cultures were quantified at 42 °C, although only strains CLP4 and CLP5 managed to grow at 30 °C. Additionally, the CLP4, CLP5, and CLP6 strains grew from 0.05 to 0.30% of biliary salts. However, only the CLP4 isolate grew at different concentrations of NaCl (2-10%), and CLP5 grew at 2% NaCl. The CLP4 strain was able to inhibit the in vitro growth of enterobacteria such as Escherichia coli ATCC® 11775TM, Salmonella Typhimurium ATCC® 14028TM, and Clostridium perfringens ATCC® 13124TM. In addition, CLP4 had lower sensitivity in the presence of amoxicillin and tetracycline compared to these pathogenic bacteria. Considering these in vitro results, it is necessary to carry out in vivo studies with the CLP4 strain to test the hypothesis of its probiotic effect in poultry.
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Diversity and Antimicrobial Activities of Actinobacteria Isolated from Mining Soils in Midelt Region, Morocco. ScientificWorldJournal 2023; 2023:6106673. [PMID: 36733955 PMCID: PMC9889154 DOI: 10.1155/2023/6106673] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/27/2022] [Accepted: 12/29/2022] [Indexed: 01/25/2023] Open
Abstract
Multidrug-resistant bacteria have emerged as a serious global health threat that requires, more than ever before, an urgent need for novel and more effective drugs. In this regard, the present study sheds light on the diversity and antimicrobial potential of Actinobacteria isolates in mining ecosystems. We have indeed investigated the production of bioactive molecules by the Actinobacteria isolated from abandoned mining areas in Midelt, Morocco, where average contents of lead (Pb) and cadmium (Cd) are higher than normal world levels. One hundred and forty-five Actinobacteria isolates were isolated and characterized based on morphological, chemotaxonomical, biochemical, and molecular data. Most of the 145 isolates were identified as Streptomyces. Isolates affiliated to the genera Amycolatopsis, Lentzea, Actinopolymorpha, and Pseudonocardia were also found. Antimicrobial producing potentials of Actinobacteria isolates were assessed against eight test microorganisms Gram+ and Gram- bacteria and yeast. Out of 145 isolates, 51 showed antimicrobial activities against at least one test microorganism. 31 isolates inhibited only bacteria, 7 showed activity against bacteria and Candida albicans, and 13 displayed activity against C. albicans solely. Our findings suggest that Actinobacteria isolated from natural heavy metal ecosystems may be a valuable source of novel secondary metabolites and therefore of new biotechnologically promising antimicrobial compounds.
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Andersone A, Janceva S, Lauberte L, Ramata-Stunda A, Nikolajeva V, Zaharova N, Rieksts G, Telysheva G. Anti-Inflammatory, Anti-Bacterial, and Anti-Fungal Activity of Oligomeric Proanthocyanidins and Extracts Obtained from Lignocellulosic Agricultural Waste. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020863. [PMID: 36677921 PMCID: PMC9861313 DOI: 10.3390/molecules28020863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023]
Abstract
It has now been proven that many pathogens that cause infections and inflammation gradually mutate and become resistant to antibiotics. Chemically synthesized drugs treating inflammation most often only affect symptoms, but side effects could lead to the failure of human organs' functionality. On the other hand, plant-derived natural compounds have a long-term healing effect. It was shown that sea buckthorn (SBT) twigs are a rich source of biologically active compounds, including oligomeric proanthocyanidins (PACs). This study aimed to assess the anti-pathogenic and anti-inflammatory activity of water/ethanol extracts and PACs obtained from the lignocellulosic biomass of eight SBT cultivars. The anti-pathogenic activity of extracts and PACs was studied against pathogenic bacteria Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli, Bacillus cereus and fungus Candida albicans in 96-well plates by the two-fold serial broth microdilution method. The anti-bacterial activity of purified PACs was 4 and 10 times higher than for water and water/ethanol extracts, respectively, but the extracts had higher anti-fungal activity. Purified PACs showed the ability to reduce IL-8 and IL-6 secretion from poly-I:C-stimulated peripheral blood mononuclear cells. For the extracts and PACs of SBT cultivar 'Maria Bruvele' in the concentration range 0.0313-4.0 mg/mL, no toxic effect was observed.
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Affiliation(s)
- Anna Andersone
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia
- Ekokompozit Ltd., Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Sarmite Janceva
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia
- Correspondence: ; Tel.: +371-25148850
| | - Liga Lauberte
- Laboratory of Finished Dosage Forms, Riga Stradins University, LV-1007 Riga, Latvia
| | - Anna Ramata-Stunda
- Faculty of Biology, University of Latvia, Jelgavas Street 1, LV-1004 Riga, Latvia
| | - Vizma Nikolajeva
- Faculty of Biology, University of Latvia, Jelgavas Street 1, LV-1004 Riga, Latvia
| | - Natalija Zaharova
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia
- Ekokompozit Ltd., Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Gints Rieksts
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia
- Laboratory of Heat and Mass Transfer, The Institute of Physics of University of Latvia, LV-2169 Salaspils, Latvia
| | - Galina Telysheva
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia
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38
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Yazdi Y, Rezaei MR, Pourianfar HR. Antibacterial Activity of Culinary-Medicinal Polypore Mushroom Lentinus tigrinus (Agaricomycetes). Int J Med Mushrooms 2023; 25:21-30. [PMID: 37522530 DOI: 10.1615/intjmedmushrooms.2023048172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Medicinal mushrooms belonging to Lentinus spp. exhibit significant antibacterial activities, but little attention has been paid to their efficacy against the food-borne pathogen, Bacillus cereus. The present study for the first time quantitatively evaluated the antibacterial activity of different extracts from fruiting bodies of a well-authenticated Iranian native strain of medicinal mushroom, Lentinus tigrinus, against Gram-positive spore-forming bacterium B. cereus. The findings revealed that the acetone extract inhibited the growth of B. cereus at concentrations as low as 31.25 μg/ML, while it had no effect against Escherichia coli and Staphylococcus aureus even at 10,000 μg/ML. The rest of the bacteria were also susceptible to the acetone extract at concentrations greater than 5 mg/ML. Antibacterial activities of the methanol-ethyl acetate extract and the hot water extract were significantly weaker than that of the acetone extract, which contained high amounts of total phenols (5.83 ± 0.08 mg GAE/g, dw), while Fourier transform infrared spectroscopy (FT-IR) confirmed the presence of functional groups, such as hydroxyl, carbonyl, amide, and amine. Further studies by scanning electron microscopy (SEM) confirmed obvious changes in the morphology of B. cereus in response to the acetone extract of L. tigrinus. This study may suggest that L. tigrinus could be a good natural source for isolating and purifying antibacterial compounds against B. cereus.
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Affiliation(s)
- Yasaman Yazdi
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
| | - Mohammad Reza Rezaei
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
| | - Hamid R Pourianfar
- Industrial Fungi Biotechnology Research Department, Research Institute for Industrial Biotechnology, Academic Center for Education, Culture and Research (ACECR)-Khorasan Razavi Branch, Mashhad, Iran
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Nur Onal F, Ozturk I, Aydin Kose F, Der G, Kilinc E, Baykan S. Comparative Evaluation of Polyphenol Contents and Biological Activities of Five Cistus L. Species Native to Turkey. Chem Biodivers 2023; 20:e202200915. [PMID: 36524294 DOI: 10.1002/cbdv.202200915] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
In this study phytochemical compounds and antioxidant capacity, cytotoxic, antimicrobial and anti-biofilm activities of hydroethanolic extracts of five Cistus species (C. creticus L., C. laurifolius L., C. monspeliensis L., C. parviflorus Lam. and C. salviifolius L.) distributed in Turkey were investigated. (+)-catechin, epigallocatechin gallate, quercetin-3-O-rutinoside, quercetin-3-O-glucoside, kaempferol-3-O-glucoside, luteolin were detected in different amounts. Strongest antioxidant capacities were observed with C. creticus, and C. parvifolius (0.476 and 0.452, respectively). Minimum inhibitory concentrations (MIC) of the extracts were determined between 32 and 128 μg/mL against different bacteria and Candida strains. C. monspeliensis and C. laurifolius extracts were inhibited the biofilm production levels of three Gram-negative bacteria (E. coli, S. enterica, P. aeruginosa), two Gram-positive bacteria (S. aureus, B. subtilis) and three Candida strains (C. albicans, C. parapsilosis, C. krusei). C. creticus extract showed strongest cytotoxic activity against human breast adenocarcinoma (MCF-7) and prostate cell lines (PC-3) (IC50 : 14.04±2.78 μg/mL and 34.04±2.74 μg/mL, respectively) among all plants tested.
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Affiliation(s)
- Fatma Nur Onal
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
| | - Ismail Ozturk
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Izmir Katip Celebi University, 35620, Izmir, Turkey
| | - Fadime Aydin Kose
- Department of Biochemistry, Faculty of Pharmacy, Izmir Katip Celebi University, 35620, Izmir, Turkey
| | - Gulay Der
- Department of Analytical Chemistry, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
| | - Emrah Kilinc
- Department of Analytical Chemistry, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
| | - Sura Baykan
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ege University, 35040, Izmir, Turkey
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Yakobi SH, Mkhize S, Pooe OJ. Screening of Antimicrobial Properties and Bioactive Compounds of Pleurotus Ostreatus Extracts against Staphylococcus Aureus, Escherichia coli, and Neisseria Gonorrhoeae. Biochem Res Int 2023; 2023:1777039. [PMID: 37101940 PMCID: PMC10125757 DOI: 10.1155/2023/1777039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/16/2023] [Accepted: 03/25/2023] [Indexed: 04/28/2023] Open
Abstract
In recent years, the potential of pathogenic bacteria to acquire resistance to a variety of antimicrobial drugs has developed significantly due to the indiscriminate exposure of a number of antibiotic compounds. The purpose of this study is to determine the antibacterial capabilities and activities of crude Pleurotus ostreatus extracts against Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Neisseria gonorrhoeae (ATCC 49926), and nine multidrug-resistant clinical isolates of Neisseria gonorrhoeae. All of these isolates exhibited sensitivity to azithromycin and ceftriaxone, while the majority of antibiotic resistance was seen against penicillin G, sulphonamide, and ciprofloxacin. Fifty percent of the isolates exhibited absolute resistance to both sulphonamide and ciprofloxacin, whereas 40% of the isolates displayed absolute resistance to penicillin G. The antibacterial activity of P. ostreatus extracts examined in this investigation varied within the same species of microorganisms. Extract B and D, extracted in the presence of 20% wheat bran bagasse and 20% maize flour bagasse, respectively, had exceptional antibacterial activity against all target isolates examined. We observed the lowest concentration of antibacterial agent required to inhibit the target bacteria to be between 1 × 10-3 mg/ml and 1 × 10-6 mg/ml with an estimated probability of 0.30769, a lower 95% confidence interval (CI) of 0.126807, an upper 95% CI of 0.576307, an estimated probability of 0.15385, a lower 95% CI of 0.043258, and an upper 95% CI, respectively. The MBC of 1 × 10-3 mg/ml was seen to eliminate 31% of the target bacteria. This dose was the most inhibitive. The antibacterial activity of all the extracts examined in the current study exhibited some degree of efficacy against both clinical isolates and standard strains. However, the majority of clinically isolated bacteria exhibited greater resistance to the extracts.
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Affiliation(s)
- Sinethemba H. Yakobi
- School of Life Sciences, Biochemistry, University of KwaZulu-Natal, Durban, South Africa
| | - Senzosenkosi Mkhize
- School of Life Sciences, Biochemistry, University of KwaZulu-Natal, Durban, South Africa
| | - Ofentse J. Pooe
- School of Life Sciences, Biochemistry, University of KwaZulu-Natal, Durban, South Africa
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Song Y, Zheng X, Hu J, Ma S, Li K, Chen J, Xu X, Lu X, Wang X. Recent advances of cell membrane-coated nanoparticles for therapy of bacterial infection. Front Microbiol 2023; 14:1083007. [PMID: 36876074 PMCID: PMC9981803 DOI: 10.3389/fmicb.2023.1083007] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/01/2023] [Indexed: 02/19/2023] Open
Abstract
The rapid evolution of antibiotic resistance and the complicated bacterial infection microenvironments are serious obstacles to traditional antibiotic therapy. Developing novel antibacterial agents or strategy to prevent the occurrence of antibiotic resistance and enhance antibacterial efficiency is of the utmost importance. Cell membrane-coated nanoparticles (CM-NPs) combine the characteristics of the naturally occurring membranes with those of the synthetic core materials. CM-NPs have shown considerable promise in neutralizing toxins, evading clearance by the immune system, targeting specific bacteria, delivering antibiotics, achieving responsive antibiotic released to the microenvironments, and eradicating biofilms. Additionally, CM-NPs can be utilized in conjunction with photodynamic, sonodynamic, and photothermal therapies. In this review, the process for preparing CM-NPs is briefly described. We focus on the functions and the recent advances in applications of several types of CM-NPs in bacterial infection, including CM-NPs derived from red blood cells, white blood cells, platelet, bacteria. CM-NPs derived from other cells, such as dendritic cells, genetically engineered cells, gastric epithelial cells and plant-derived extracellular vesicles are introduced as well. Finally, we place a novel perspective on CM-NPs' applications in bacterial infection, and list the challenges encountered in this field from the preparation and application standpoint. We believe that advances in this technology will reduce threats posed by bacteria resistance and save lives from infectious diseases in the future.
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Affiliation(s)
- Yue Song
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Xia Zheng
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Juan Hu
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Subo Ma
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Kun Li
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Junyao Chen
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou, China
| | - Xiaoling Xu
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou, China
| | - Xiaoyang Lu
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaojuan Wang
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Rajčević N, Bukvički D, Dodoš T, Marin PD. Interactions between Natural Products-A Review. Metabolites 2022; 12:metabo12121256. [PMID: 36557296 PMCID: PMC9786035 DOI: 10.3390/metabo12121256] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/03/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
Plant-based natural products have been used as a source for therapeutics since the dawn of civilization. According to the World Health Organization (WHO), more than 80% of the world's population relies on traditional medicine for their primary healthcare. Numerous natural extracts, widely known in Traditional Chinese Medicine, Indian Ayurveda medicine and other practices, have led to the modern discovery and development of new drugs. Plants continuously interact with their environment, producing new compounds and ever-changing combinations of existing ones. Interestingly, some of the compounds have shown lower therapeutic activity in comparison to the extract they were isolated from. These findings suggest that the higher therapeutic activity of the source extract was due to the synergistic effect of several compounds. In other words, the total therapeutic potential of the extract cannot be explained only by the sum of its parts alone. In traditional medicine, most herbal remedies are based on a mixture of plants, and it is the interaction between different constituents that amplifies their therapeutic potential. Considering the significant influence traditional medicine has on human healthcare, knowing and studying the synergistic effect of compounds is paramount in designing smart therapeutic agents.
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Fernández-Babiano I, Navarro-Pérez ML, Pérez-Giraldo C, Fernández-Calderón MC. Antibacterial and Antibiofilm Activity of Carvacrol against Oral Pathogenic Bacteria. Metabolites 2022; 12:metabo12121255. [PMID: 36557293 PMCID: PMC9785330 DOI: 10.3390/metabo12121255] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Faced with the current situation of high rates of microbial resistance, together with the scarcity of new antibiotics, it is necessary to search for and identify new antimicrobials, preferably natural, to alleviate this situation. The aim of this work was to evaluate the antibacterial activity of carvacrol (CAR), a phenolic compound of essential oils, against pathogenic microorganisms causing oral infections, such as Streptococcus mutans and S. sanguinis, never evaluated before. The minimum inhibitory and the minimum bactericidal concentration were 93.4 μg/mL and 373.6 μg/mL, respectively, for the two strains. The growth kinetics under different concentrations of CAR, as well as the bactericidal power were determined. The subinhibitory concentrations delayed and decreased bacterial growth. Its efficacy on mature biofilms was also tested. Finally, the possible hemolytic effect of CAR, not observable at the bactericidal concentrations under study, was evaluated. Findings obtained point to CAR as an excellent alternative agent to safely prevent periodontal diseases. In addition, it is important to highlight the use of an experimental methodology that includes dual-species biofilm and subinhibitory concentration models to determine optimal CAR treatment concentrations. Thus, CAR could be used preventively in mouthwashes or biomaterials, or in treatments to avoid existing antibiotic resistance.
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Affiliation(s)
- Irene Fernández-Babiano
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, 06006 Badajoz, Spain
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
| | - María Luisa Navarro-Pérez
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, 06006 Badajoz, Spain
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
| | - Ciro Pérez-Giraldo
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, 06006 Badajoz, Spain
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
- Biomedical Research Network Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain
| | - María Coronada Fernández-Calderón
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, 06006 Badajoz, Spain
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
- Biomedical Research Network Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain
- Correspondence: ; Tel.: +34-924-289-812
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Synergistic Action of Cinnamomum verum Essential Oil with Sertraline. Antibiotics (Basel) 2022; 11:antibiotics11111617. [PMID: 36421261 PMCID: PMC9686778 DOI: 10.3390/antibiotics11111617] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Cinnamomum verum L. essential oil (CEO), commonly known as Ceylon cinnamon or cinnamon tree, is regarded as one of the most employed essential oils in the field of aromatherapy. It is usually applied externally as astringent, antipruritic, rubefacient, and anti-septic agent. Furthermore, both in vitro and in vivo research have demonstrated its numerous pharmacological effects, including the potentiality for treating neuralgia, myalgia, headache, and migraine. Several pieces of research also corroborated its significant antiviral and antimicrobial properties. Cinnamaldehyde, eugenol, caryophyllene, cinnamyl acetate, and cinnamic acid are the most representative compounds that are generally found in greater quantities in CEO and play a pivotal role in determining its pharmacological activities. Due to the global antibiotic resistance scenario and the dwindling amount of funding dedicated to developing new antibiotics, in recent years research has concentrated on exploring specific economic approaches against microbial infections. In this context, the purpose of this study was the investigation of the synergistic antibacterial activities of commercially available and chemically characterized CEO in combination with sertraline, a selective serotonin reuptake inhibitor (SSRI), whose repositioning as a non-antibiotic drug has been explored over the years with encouraging results. In vitro effects of the titled combination were assessed toward a wide panel of both Gram-positive and Gram-negative bacteria. The antimicrobial efficacy was investigated by using the checkerboard microdilution method. The interesting preliminary results obtained suggested a synergistic effect (fractional inhibitory index, FICI < 0.5) of sertraline in combination with CEO, leading to severe growth inhibition for all bacterial species under investigation.
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Magneto-Fluorescent Mesoporous Nanocarriers for the Dual-Delivery of Ofloxacin and Doxorubicin to Tackle Opportunistic Bacterial Infections in Colorectal Cancer. Int J Mol Sci 2022; 23:ijms232012287. [PMID: 36293142 PMCID: PMC9603674 DOI: 10.3390/ijms232012287] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/09/2022] [Accepted: 10/09/2022] [Indexed: 11/17/2022] Open
Abstract
Cancer-related opportunistic bacterial infections are one major barrier for successful clinical therapies, often correlated to the production of genotoxic factors and higher cancer incidence. Although dual anticancer and antimicrobial therapies are a growing therapeutic fashion, they still fall short when it comes to specific delivery and local action in in vivo systems. Nanoparticles are seen as potential therapeutic vectors, be it by means of their intrinsic antibacterial properties and effective delivery capacity, or by means of their repeatedly reported modulation and maneuverability. Herein we report on the production of a biocompatible, antimicrobial magneto-fluorescent nanosystem (NANO3) for the delivery of a dual doxorubicin-ofloxacin formulation against cancer-related bacterial infections. The drug delivery capacity, rendered by its mesoporous silica matrix, is confirmed by the high loading capacity and stimuli-driven release of both drugs, with preference for tumor-like acidic media. The pH-dependent emission of its surface fluorescent SiQDs, provides an insight into NANO3 surface behavior and pore availability, with the SiQDs working as pore gates. Hyperthermia induces heat generation to febrile temperatures, doubling drug release. NANO3-loaded systems demonstrate significant antimicrobial activity, specifically after the application of hyperthermia conditions. NANO3 structure and antimicrobial properties confirm their potential use in a future dual anticancer and antimicrobial therapeutical vector, due to their drug loading capacity and their surface availability for further modification with bioactive, targeting species.
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Liang J, Huang X, Ma G. Antimicrobial activities and mechanisms of extract and components of herbs in East Asia. RSC Adv 2022; 12:29197-29213. [PMID: 36320733 PMCID: PMC9554739 DOI: 10.1039/d2ra02389j] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022] Open
Abstract
Antibacterial drugs face increasing challenges due to drug resistance and adverse reactions, which has created a pressing need for the discovery and development of novel antibacterial drugs. Herbs have played an important role in the treatment of infectious diseases. This review aims to summarize, analyze and evaluate the antibacterial activities and mechanisms of components from popular herbs in East Asia. In this review, we have searched and summarized the scientific papers published during the past twenty-year period from electronic databases such as PubMed, ScienceDirect, and Web of Science. These herbs and their components, including alkaloids, flavonoids, essential oils, terpenes, organic acids, coumarins and lignans, display potential antimicrobial effects. Herbal medicine formulas (HMFs) usually show stronger antibacterial activity than single herbs. Herbs and HMFs bring forth antibacterial activities by damaging cell membranes and walls, inhibiting nucleic acid and protein synthesis, and increasing intracellular osmotic pressure. These herbs and their components can be developed as potential and promising novel antibacterial herbal products.
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Affiliation(s)
- Jingru Liang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University826 Zhangheng RoadShanghai 201203China+86-21-5198-0025
| | - Xuan Huang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University826 Zhangheng RoadShanghai 201203China+86-21-5198-0025
| | - Guo Ma
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University826 Zhangheng RoadShanghai 201203China+86-21-5198-0025
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Ma Y, Zohaib Aslam M, Wu M, Nitin N, Sun G. Strategies and perspectives of developing anti-biofilm materials for improved food safety. Food Res Int 2022; 159:111543. [DOI: 10.1016/j.foodres.2022.111543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/04/2022] [Accepted: 06/18/2022] [Indexed: 11/04/2022]
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48
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Li Y, Miao Y, Yang L, Zhao Y, Wu K, Lu Z, Hu Z, Guo J. Recent Advances in the Development and Antimicrobial Applications of Metal-Phenolic Networks. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202684. [PMID: 35876402 PMCID: PMC9507365 DOI: 10.1002/advs.202202684] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/23/2022] [Indexed: 05/04/2023]
Abstract
Due to the abuse of antibiotics and the emergence of multidrug resistant microorganisms, medical devices, and related biomaterials are at high risk of microbial infection during use, placing a heavy burden on patients and healthcare systems. Metal-phenolic networks (MPNs), an emerging organic-inorganic hybrid network system developed gradually in recent years, have exhibited excellent multifunctional properties such as anti-inflammatory, antioxidant, and antibacterial properties by making use of the coordination between phenolic ligands and metal ions. Further, MPNs have received widespread attention in antimicrobial infections due to their facile synthesis process, excellent biocompatibility, and excellent antimicrobial properties brought about by polyphenols and metal ions. In this review, different categories of biomaterials based on MPNs (nanoparticles, coatings, capsules, hydrogels) and their fabrication strategies are summarized, and recent research advances in their antimicrobial applications in biomedical fields (e.g., skin repair, bone regeneration, medical devices, etc.) are highlighted.
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Affiliation(s)
- Yue Li
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
| | - Yong Miao
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
| | - Lunan Yang
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
| | - Yitao Zhao
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
| | - Keke Wu
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
| | - Zhihui Lu
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
- Regenerative Medicine and Tissue Repair Research CenterHuangpu Institute of MaterialsGuangzhou510530P. R. China
| | - Zhiqi Hu
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
| | - Jinshan Guo
- Department of Histology and EmbryologySchool of Basic Medical SciencesDepartment of Plastic and Aesthetic SurgeryNanfang Hospital of Southern Medical UniversitySouthern Medical UniversityGuangzhou510515P. R. China
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Yang FF, Shuai MS, Guan X, Zhang M, Zhang QQ, Fu XZ, Li ZQ, Wang DP, Zhou M, Yang YY, Liu T, He B, Zhao YL. Synthesis and antibacterial activity studies in vitro of indirubin-3'-monoximes. RSC Adv 2022; 12:25068-25080. [PMID: 36199871 PMCID: PMC9438470 DOI: 10.1039/d2ra01035f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 08/21/2022] [Indexed: 11/21/2022] Open
Abstract
Multi-drug-resistant microbial pathogens are a serious global health problem. New compounds with antibacterial activity serve as good candidates for developing novel antibacterial drugs which is very urgent and important. In this work, based on the unique scaffold of indirubin, an active ingredient of traditional Chinese medicine formulation Danggui Luhui Wan, we synthesized 29 indirubin-3'-monoximes and preliminarily evaluated their antibacterial activities. The antibacterial activity results demonstrated that the synthesized indirubin-3'-monoximes 5a-5z and 5aa-5ad displayed good potency against S. aureus ATCC25923 (MIC = 0.4-25.6 μg mL-1). Among them, we found that the 5-F, 5-Cl and 7-CF3 substituted indirubin-3'-monoximes 5r, 5s and 5aa also showed better antibacterial efficiency for S. aureus (MICs up to 0.4 μg mL-1) than the prototype natural product indirubin (MIC = 32 μg mL-1). More importantly, indirubin-3'-monoxime 5aa has certain synergistic effect with levofloxacin against clinic multidrug-resistant S. aureus (fractional inhibitory concentration index: 0.375). In addition, relevant experiments including electron microscopy observations, PI staining and the leakage of extracellular potassium ions and nucleic acid (260 nm) have been performed after treating S. aureus with indirubin-3'-monoxime 5aa, and the results revealed that indirubin-3'-monoximes could increase the cell membrane permeability of S. aureus. Although indirubin-3'-monoxime 5aa showed some cytotoxicity toward SH-SY5Y cells relative to compounds 5r and 5s, the skin irritation test of male mice after shaving showed that compound 5aa at a concentration of 12.8 μg mL-1 had no toxicity to mouse skin, and it could be used as a leading compound for skin antibacterial drugs.
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Affiliation(s)
- Fen-Fen Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Ming-Shan Shuai
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Xiang Guan
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Mao Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Qing-Qing Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Xiao-Zhong Fu
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Zong-Qin Li
- Department of Neurology Sichuan Mianyang 404 Hospital Mianyang 621000 People's Republic of China
| | - Da-Peng Wang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University Guiyang 550025 People's Republic of China
| | - Meng Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Yuan-Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Ting Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Bin He
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Yong-Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmacy, and Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University Guiyang 550004 People's Republic of China
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In Silico Docking, Resistance Modulation and Biofilm Gene Expression in Multidrug-Resistant Acinetobacter baumannii via Cinnamic and Gallic Acids. Antibiotics (Basel) 2022; 11:antibiotics11070870. [PMID: 35884124 PMCID: PMC9311515 DOI: 10.3390/antibiotics11070870] [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: 06/08/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 11/25/2022] Open
Abstract
Despite the mounting global burden of antimicrobial resistance (AMR), the generation of new classes of effective antimicrobials still lags far behind. The interplay between multidrug resistance and biofilm formation in Acinetobacter baumannii has drastically narrowed the available therapeutic choices. The use of natural compounds holds promise as an alternate option for restoring the activity of existing antibiotics and attenuating virulence traits through reduced biofilm formation. This study aimed to evaluate the modulatory effect of combining cinnamic and gallic acids at ½MIC with various antibiotics against multidrug-resistant (MDR) A. baumannii clinical isolates as well as study the effect on the expression of the biofilm-associated genes (bap, csuE, ompA) via quantitative, real-time PCR. Combining cinnamic or gallic acid with imipenem, amikacin or doxycycline resulted in significant reduction of resistance (p < 0.05). On the contrary, no effect was recorded when both acids were combined with levofloxacin, and only cinnamic acid had a synergistic effect with colistin. The transcriptomic changes of biofilm-related genes in the presence of gallic acid at ½MIC were compared with untreated control samples. The fold expression values proved that gallic acid substantially down-regulated the respective genes in all five strong biofilm formers. Molecular docking studies of gallic and cinnamic acids on target genes revealed good binding affinities and verified the proposed mechanism of action. To the best of our knowledge, this is the first report on the effect of gallic acid on the expression of bap, csuE and ompA genes in A. baumannii, which may permit its use as an adjunct anti-virulence therapeutic strategy.
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