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Guo P, Li Z, Cai T, Guo D, Yang B, Zhang C, Shan Z, Wang X, Peng X, Liu G, Shi C, Alharbi M, Alasmari AF. Inhibitory effect and mechanism of oregano essential oil on Listeria monocytogenes cells, toxins and biofilms. Microb Pathog 2024; 194:106801. [PMID: 39025378 DOI: 10.1016/j.micpath.2024.106801] [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: 04/04/2024] [Revised: 06/12/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Listeria monocytogenes (L. monocytogenes) is a prevalent foodborne pathogen with a remarkable capacity to form biofilms on utensil surfaces. The Listeriolysin O (LLO) exhibits hemolytic activity, which is responsible for causing human infections. In this study, we investigated the inhibitory effect and mechanism of oregano essential oil (OEO) on L. monocytogenes, evaluated the effects on its biofilm removal and hemolytic activity. The minimum inhibitory concentration (MIC) of OEO against L. monocytogenes was 0.03 % (v/v). L. monocytogenes was treated with OEO at 3/2 MIC for 30 min the bacteria was decreased below the detection limit (10 CFU/mL) in PBS and TSB (the initial bacterial load was about 6.5 log CFU/mL). The level of L. monocytogenes in minced pork co-cultured with OEO (15 MIC) about 2.5 log CFU/g lower than that in the untreated group. The inhibitory mechanisms of OEO against planktonic L. monocytogenes encompassed perturbation of cellular morphology, elevation in reactive oxygen species levels, augmentation of lipid oxidation extent, hyperpolarization of membrane potential, and reduction in intracellular ATP concentration. In addition, OEO reduced biofilm coverage on the surface of glass slides by 62.03 % compared with the untreated group. Meanwhile, OEO (1/8 MIC) treatment reduced the hemolytic activity of L. monocytogenes to 24.6 % compared with the positive control. Molecular docking suggested carvacrol and thymol might reduce the hemolytic activity of L. monocytogenes. The results of this study demonstrate that OEO exhibits inhibitory effects against L. monocytogenes, biofilms and LLO, which had potential as natural antimicrobial for the inhibition of L. monocytogenes.
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Affiliation(s)
- Peng Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhenye Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ting Cai
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Du Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Baowei Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chunling Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhongguo Shan
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xin Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaoli Peng
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Guorong Liu
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, China.
| | - Chao Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China; Northwest A&F University ShenZhen Research Institute, Shenzhen, Guangdong, 518057, China.
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Abdullah F Alasmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
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Barbosa AD, Leitão AC, de Oliveira LC, Rodrigues DS, de Farias Cabral VP, Moreira LEA, Silveira MJCB, Barbosa SA, de Souza BO, Sá LGDAV, de Andrade Neto JB, Cavalcanti BC, Magalhães IL, de Moraes MO, Júnior HVN, da Silva CR. Antifungal activity of propafenone on Candida spp. strains: interaction with antifungals and possible mechanism of action. J Med Microbiol 2024; 73. [PMID: 38979984 DOI: 10.1099/jmm.0.001850] [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] [Indexed: 07/10/2024] Open
Abstract
Introduction. The development of new antifungal drugs has become a global priority, given the increasing cases of fungal diseases together with the rising resistance to available antifungal drugs. In this scenario, drug repositioning has emerged as an alternative for such development, with advantages such as reduced research time and costs.Gap statement. Propafenone is an antiarrhythmic drug whose antifungal activity is poorly described, being a good candidate for further study.Aim. This study aims to evaluate propafenone activity against different species of Candida spp. to evaluate its combination with standard antifungals, as well as its possible action mechanism.Methodology. To this end, we carried out tests against strains of Candida albicans, Candida auris, Candida parapsilosis, Candida tropicalis, Candida glabrata and Candida krusei based on the evaluation of the MIC, minimum fungicidal concentration and tolerance level, along with checkerboard and flow cytometry tests with clinical strains and cell structure analysis by scanning electron microscopy (SEM).Results. The results showed that propafenone has a 50% MIC ranging from 32 to 256 µg ml-1, with fungicidal activity and positive interactions with itraconazole in 83.3% of the strains evaluated. The effects of the treatments observed by SEM were extensive damage to the cell structure, while flow cytometry revealed the apoptotic potential of propafenone against Candida spp.Conclusion. Taken together, these results indicate that propafenone has the potential for repositioning as an antifungal drug.
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Affiliation(s)
- Amanda Dias Barbosa
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Amanda Cavalcante Leitão
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Leilson Carvalho de Oliveira
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Daniel Sampaio Rodrigues
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Vitória Pessoa de Farias Cabral
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lara Elloyse Almeida Moreira
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Maria Janielly Castelo Branco Silveira
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Sarah Alves Barbosa
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Beatriz Oliveira de Souza
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lívia Gurgel do Amaral Valente Sá
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, CE, Brazil
| | - João Batista de Andrade Neto
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, CE, Brazil
| | - Bruno Coelho Cavalcanti
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Islay Lima Magalhães
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | | | - Hélio Vitoriano Nobre Júnior
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Cecília Rocha da Silva
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
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Zhang Y, Yang Z, Huang Q, Zhan X, Liu X, Guo D, Wang S, Rui W, Lü X, Shi C. Antimicrobial Activity of Eugenol Against Bacillus cereus and Its Application in Skim Milk. Foodborne Pathog Dis 2024; 21:147-159. [PMID: 38100031 DOI: 10.1089/fpd.2023.0013] [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] [Indexed: 03/09/2024] Open
Abstract
Bacillus cereus is a foodborne pathogen widely distributed in the large-scale catering industry and produces spores. The study explored the antibacterial activity, potential mechanism of eugenol against B. cereus, and spores with germination rate. The minimum inhibitory concentration (MIC; 0.6 mg/mL) of eugenol to six B. cereus strains was compared with the control; B. cereus treated with eugenol had a longer lag phase. Eugenol at a concentration of more than 1/2MIC decreased viable B. cereus (∼5.7 log colony-forming unit [CFU]/mL) counts below detectable limits within 2 h, and eugenol of 3MIC reduced B. cereus (∼5.9 log CFU/mL) in skim milk below detectable limits within 30 min. The pH values of skim milk were unaffected by the addition of eugenol. The ΔE values below 2 show that the color variations of skim milk were not visible to the human eye. For sensory evaluation, eugenol did not significantly affect the color or structural integrity of the skim milk. It had a negative impact on the flavor and general sensory acceptance of the treated milk. Eugenol hyperpolarized B. cereus cell membrane, decreased intracellular ATP concentration, and increased intracellular reactive oxygen species contents and extracellular malondialdehyde contents, resulting in the cell membrane of B. cereus being damaged and permeabilized, and cell morphology being changed. In addition, according to the viable count, confocal laser scanning microscopy, and spore morphology changes, eugenol reduced the germination rate of B. cereus spores. These findings suggest that eugenol can be used as a new natural antibacterial agent to control B. cereus and spores in the food production chain.
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Affiliation(s)
- Yingying Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Zhuokai Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Qianning Huang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xiangjun Zhan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xing Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Du Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Shuo Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Wushuang Rui
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Chao Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
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Oliveira LM, Siqueira FS, Silva MT, Machado JVC, Cordeiro CF, Diniz LF, Campos MMA, Franco LL, Souza TB, Hawkes JA, Carvalho DT. Synthesis and antimicrobial activity of molecular hybrids based on eugenol and chloramphenicol pharmacophores. Folia Microbiol (Praha) 2023; 68:823-833. [PMID: 37118368 DOI: 10.1007/s12223-023-01057-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/14/2023] [Indexed: 04/30/2023]
Abstract
In the constant search for new pharmacological compounds, molecular hybridisation is a well-known technique whereby two or more known pharmacophoric subunits are combined to create a new "hybrid" compound. This hybrid is expected to maintain the characteristics of the original compounds whilst demonstrating improvements to their pharmacological action. Accordingly, we report here a series of molecular hybrid compounds based upon eugenol and chloramphenicol pharmacophores. The hybrid compounds were screened for their in vitro antimicrobial potential against Gram-negative and Gram-positive bacteria and also rapidly growing mycobacteria (RGM). The results highlight that the antimicrobial profiles of the hybrid compounds improve in a very clear fashion when moving through the series. The most prominent results were found when comparing the activity of the hybrid compounds against some of the multidrug-resistant clinical isolates of Pseudomonas aeruginosa, methicillin-resistant clinical isolates of Staphylococcus aureus (MRSA) and clinical isolates of rapidly growing mycobacteria.
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Affiliation(s)
- Lucas M Oliveira
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Fallon S Siqueira
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Michelle T Silva
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - José V C Machado
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Cleydson F Cordeiro
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Lívia F Diniz
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, MG, 37130-001, Brazil
| | - Marli M A Campos
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Lucas L Franco
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Thiago B Souza
- Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Jamie A Hawkes
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Diogo T Carvalho
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil.
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Leitão AC, Ferreira TL, Gurgel do Amaral Valente Sá L, Rodrigues DS, de Souza BO, Barbosa AD, Moreira LEA, de Andrade Neto JB, Cabral VPDF, Rios MEF, Cavalcanti BC, Silva J, Marinho ES, Dos Santos HS, de Moraes MO, Júnior HVN, da Silva CR. Antibacterial activity of menadione alone and in combination with oxacillin against methicillin-resistant Staphylococcus aureus and its impact on biofilms. J Med Microbiol 2023; 72. [PMID: 37707372 DOI: 10.1099/jmm.0.001751] [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] [Indexed: 09/15/2023] Open
Abstract
Introduction. Antibiotic resistance is a major threat to public health, particularly with methicillin-resistant Staphylococcus aureus (MRSA) being a leading cause of antimicrobial resistance. To combat this problem, drug repurposing offers a promising solution for the discovery of new antibacterial agents.Hypothesis. Menadione exhibits antibacterial activity against methicillin-sensitive and methicillin-resistant S. aureus strains, both alone and in combination with oxacillin. Its primary mechanism of action involves inducing oxidative stress.Methodology. Sensitivity assays were performed using broth microdilution. The interaction between menadione, oxacillin, and antioxidants was assessed using checkerboard technique. Mechanism of action was evaluated using flow cytometry, fluorescence microscopy, and in silico analysis.Aim. The aim of this study was to evaluate the in vitro antibacterial potential of menadione against planktonic and biofilm forms of methicillin-sensitive and resistant S. aureus strains. It also examined its role as a modulator of oxacillin activity and investigated the mechanism of action involved in its activity.Results. Menadione showed antibacterial activity against planktonic cells at concentrations ranging from 2 to 32 µg ml-1, with bacteriostatic action. When combined with oxacillin, it exhibited an additive and synergistic effect against the tested strains. Menadione also demonstrated antibiofilm activity at subinhibitory concentrations and effectively combated biofilms with reduced sensitivity to oxacillin alone. Its mechanism of action involves the production of reactive oxygen species (ROS) and DNA damage. It also showed interactions with important targets, such as DNA gyrase and dehydroesqualene synthase. The presence of ascorbic acid reversed its effects.Conclusion. Menadione exhibited antibacterial and antibiofilm activity against MRSA strains, suggesting its potential as an adjunct in the treatment of S. aureus infections. The main mechanism of action involves the production of ROS, which subsequently leads to DNA damage. Additionally, the activity of menadione can be complemented by its interaction with important virulence targets.
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Affiliation(s)
- Amanda Cavalcante Leitão
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Thais Lima Ferreira
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lívia Gurgel do Amaral Valente Sá
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- Christus University Center, Fortaleza, CE, Brazil
| | - Daniel Sampaio Rodrigues
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Beatriz Oliveira de Souza
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Amanda Dias Barbosa
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lara Elloyse Almeida Moreira
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | - Vitória Pessoa de Farias Cabral
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | | | - Jacilene Silva
- Department of Chemistry, Theoretical Chemistry and Electrochemistry Group (GQTE), State University of Ceará, Limoeiro do Norte, CE, Brazil
| | - Emmanuel Silva Marinho
- Department of Chemistry, Theoretical Chemistry and Electrochemistry Group (GQTE), State University of Ceará, Limoeiro do Norte, CE, Brazil
| | - Hélcio Silva Dos Santos
- Center for Exact Sciences and Technology, Acaraú Valley State University, Sobral, CE, Brazil
| | | | - Hélio Vitoriano Nobre Júnior
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Cecília Rocha da Silva
- Department of Clinical & Toxicological Analysis, School of Pharmacy, Laboratory for Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
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Cai T, Li Z, Guo P, Guo J, Wang R, Guo D, Yu J, Lü X, Xia X, Shi C. Antimicrobial and Antibiofilm Efficacy and Mechanism of Oregano Essential Oil Against Shigella flexneri. Foodborne Pathog Dis 2023; 20:209-221. [PMID: 37335913 DOI: 10.1089/fpd.2023.0006] [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: 06/21/2023] Open
Abstract
The aim of this study was to assess the antimicrobial activity of oregano essential oil (OEO) against Shigella flexneri and eradication efficacy of OEO on biofilm. The results showed that the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of OEO against S. flexneri were 0.02% (v/v) and 0.04% (v/v), respectively. OEO effectively killed S. flexneri in Luria-Bertani (LB) broth and contaminated minced pork (the initial population of S. flexneri was about 7.0 log CFU/mL or 7.2 log CFU/g), and after treatment with OEO at 2 MIC in LB broth or at 15 MIC in minced pork, the population of S. flexneri decreased to an undetectable level after 2 or 9 h, respectively. OEO increased intracellular reactive oxygen species concentration, destroyed cell membrane, changed cell morphology, decreased intracellular ATP concentration, caused cell membrane depolarization, and destroyed proteins or inhibited proteins synthesis of S. flexneri. In addition, OEO effectively eradicated the biofilm of S. flexneri by effectively inactivating S. flexneri in mature biofilm, destroying the three-dimensional structure, and reducing exopolysaccharide biomass of S. flexneri. In conclusion, OEO exerts its antimicrobial action effectively and also has a valid scavenging effect on the biofilm of S. flexneri. These findings suggest that OEO has the potential to be used as a natural antibacterial and antibiofilm material in the control of S. flexneri in meat product supply chain, thereby preventing meat-associated infections.
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Affiliation(s)
- Ting Cai
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Zhenye Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Peng Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jialu Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Ruixia Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Du Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jiangtao Yu
- Yangling Hesheng Irradiation Technologies Co., Ltd, Yangling, China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xiaodong Xia
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China
| | - Chao Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
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Candreva A, De Rose R, Perrotta ID, Guglielmelli A, La Deda M. Light-Induced Clusterization of Gold Nanoparticles: A New Photo-Triggered Antibacterial against E. coli Proliferation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13040746. [PMID: 36839113 PMCID: PMC9967119 DOI: 10.3390/nano13040746] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 05/14/2023]
Abstract
Metallic nanoparticles show plasmon resonance phenomena when irradiated with electromagnetic radiation of a suitable wavelength, whose value depends on their composition, size, and shape. The damping of the surface electron oscillation causes a release of heat, which causes a large increase in local temperature. Furthermore, this increase is enhanced when nanoparticle aggregation phenomena occur. Local temperature increase is extensively exploited in photothermal therapy, where light is used to induce cellular damage. To activate the plasmon in the visible range, we synthesized 50 nm diameter spherical gold nanoparticles (AuNP) coated with polyethylene glycol and administered them to an E. coli culture. The experiments were carried out, at different gold nanoparticle concentrations, in the dark and under irradiation. In both cases, the nanoparticles penetrated the bacterial wall, but a different toxic effect was observed; while in the dark we observed an inhibition of bacterial growth of 46%, at the same concentration, under irradiation, we observed a bactericidal effect (99% growth inhibition). Photothermal measurements and SEM observations allowed us to conclude that the extraordinary effect is due to the formation, at low concentrations, of a light-induced cluster of gold nanoparticles, which does not form in the absence of bacteria, leading us to the conclusion that the bacterium wall catalyzes the formation of these clusters which are ultimately responsible for the significant increase in the measured temperature and cause of the bactericidal effect. This photothermal effect is achieved by low-power irradiation and only in the presence of the pathogen: in its absence, the lack of gold nanoparticles clustering does not lead to any phototoxic effect. Therefore, it may represent a proof of concept of an innovative nanoscale pathogen responsive system against bacterial infections.
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Affiliation(s)
- Angela Candreva
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy
- CNR-NANOTEC, Institute of Nanotechnology U.O.S, Cosenza, 87036 Rende, Italy
| | - Renata De Rose
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy
| | - Ida Daniela Perrotta
- Department of Biology, Ecology and Earth Sciences, Centre for Microscopy and Microanalysis (CM2), University of Calabria, 87036 Rende, Italy
| | - Alexa Guglielmelli
- CNR-NANOTEC, Institute of Nanotechnology U.O.S, Cosenza, 87036 Rende, Italy
- Department of Physics, NLHT-Lab, University of Calabria, 87036 Rende, Italy
| | - Massimo La Deda
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy
- CNR-NANOTEC, Institute of Nanotechnology U.O.S, Cosenza, 87036 Rende, Italy
- Correspondence:
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Liu W, Chen G, Dou K, Yi B, Wang D, Zhou Q, Sun Y. Eugenol eliminates carbapenem-resistant Klebsiella pneumoniae via reactive oxygen species mechanism. Front Microbiol 2023; 14:1090787. [PMID: 36876091 PMCID: PMC9978153 DOI: 10.3389/fmicb.2023.1090787] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 01/09/2023] [Indexed: 02/18/2023] Open
Abstract
Multidrug-resistant (MDR) bacterial infections have gained increasing attention due to the high incidence rates and high mortality, especially for the carbapenem-resistant Klebsiella pneumoniae (CRKP) infection that can cause severe complications (e.g., pneumonia and sepsis) in multiple organs. Therefore, the development of new antibacterial agents against CRKP is imperative. Inspired by natural plant antibacterial agents with broad-spectrum antibacterial properties, the antibacterial/biofilm activity of eugenol (EG) on CRKP and their underlying mechanisms are investigated in our work. It is found that EG exhibits remarkable inhibitory effects on planktonic CRKP in a dose-dependent fashion. Meanwhile, the destruction of membrane integrity induced by the formation of reactive oxygen species (ROS) and glutathione reduction results in the leakage of bacterial cytoplasmic components, including DNA, β-galactosidase, and protein. Moreover, when EG contacts with bacterial biofilm, the whole thickness of the dense biofilm matrix decreases, and the integrity is destroyed. Overall, this work verified that EG could eliminate CRKP via ROS-induced membrane rupture, which offers vital evidence to explain the antibacterial ability of EG against CRKP.
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Affiliation(s)
- Wei Liu
- Department of Critical Care Medicine, College of Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Guang Chen
- Department of Critical Care Medicine, College of Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Keke Dou
- Department of Stomatology, The Affiliated Hospital of Qingdao University, Qingdao University, Institute for Translational Medicine, Qingdao, China
| | - Bingcheng Yi
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, China
| | - Danyang Wang
- Department of Stomatology, The Affiliated Hospital of Qingdao University, Qingdao University, Institute for Translational Medicine, Qingdao, China
| | - Qihui Zhou
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, China
| | - Yunbo Sun
- Department of Critical Care Medicine, College of Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
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9
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Augostine CR, Avery SV. Discovery of Natural Products With Antifungal Potential Through Combinatorial Synergy. Front Microbiol 2022; 13:866840. [PMID: 35558105 PMCID: PMC9087349 DOI: 10.3389/fmicb.2022.866840] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/23/2022] [Indexed: 12/22/2022] Open
Abstract
The growing prevalence of antifungal drug resistance coupled with the slow development of new, acceptable drugs and fungicides has raised interest in natural products (NPs) for their therapeutic potential and level of acceptability. However, a number of well-studied NPs are considered promiscuous molecules. In this study, the advantages of drug-drug synergy were exploited for the discovery of pairwise NP combinations with potentiated antifungal activity and, potentially, increased target specificity. A rational approach informed by previously known mechanisms of action of selected NPs did not yield novel antifungal synergies. In contrast, a high-throughput screening approach with yeast revealed 34 potential synergies from 800 combinations of a diverse NP library with four selected NPs of interest (eugenol, EUG; β-escin, ESC; curcumin, CUR; berberine hydrochloride, BER). Dedicated assays validated the most promising synergies, namely, EUG + BER, CUR + sclareol, and BER + pterostilbene (PTE) [fractional inhibitory concentrations (FIC) indices ≤ 0.5 in all cases], reduced to as low as 35 (BER) and 7.9 mg L-1 (PTE). These three combinations synergistically inhibited a range of fungi, including human or crop pathogens Candida albicans, Aspergillus fumigatus, Zymoseptoria tritici, and Botrytis cinerea, with synergy also against azole-resistant isolates and biofilms. Further investigation indicated roles for mitochondrial membrane depolarization and reactive oxygen species (ROS) formation in the synergistic mechanism of EUG + BER action. This study establishes proof-of-principle for utilizing high-throughput screening of pairwise NP interactions as a tool to find novel antifungal synergies. Such NP synergies, with the potential also for improved specificity, may help in the management of fungal pathogens.
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Affiliation(s)
| | - Simon V. Avery
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
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10
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Synthesis, Characterization, and Biological Activity Evaluation of Magnetite-Functionalized Eugenol. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02207-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Dash SS, Banerjee J, Samanta S, Giri B, Dash SK. Microwave-Assisted Fabrication of Silver Nanoparticles Utilizing Seed Extract of Areca catechu with Antioxidant Potency and Evaluation of Antibacterial Efficacy Against Multidrug Resistant Pathogenic Bacterial Strains. BIONANOSCIENCE 2022. [DOI: 10.1007/s12668-021-00927-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Natural Methoxyphenol Compounds: Antimicrobial Activity against Foodborne Pathogens and Food Spoilage Bacteria, and Role in Antioxidant Processes. Foods 2021; 10:foods10081807. [PMID: 34441583 PMCID: PMC8392586 DOI: 10.3390/foods10081807] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 11/17/2022] Open
Abstract
The antibacterial and antioxidant activities of three methoxyphenol phytometabolites, eugenol, capsaicin, and vanillin, were determined. The in vitro antimicrobial potential was tested on three common foodborne pathogens (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus) and three food spoilage bacteria (Shewanella putrefaciens, Brochothrix thermosphacta, and Lactobacillus plantarum). The antioxidant assays were carried out for studying the free radical scavenging capacity and the anti-lipoperoxidant activity. The results showed that eugenol and capsaicin were the most active against both pathogens and spoilage bacteria. S. aureus was one of the most affected strains (median concentration of growth inhibition: IC50 eugenol = 0.75 mM; IC50 capsaicin = 0.68 mM; IC50 vanillin = 1.38 mM). All phytochemicals slightly inhibited the growth of L. plantarum. Eugenol was the most active molecule in the antioxidant assays. Only in the oxygen radical absorbing capacity (ORAC) test did vanillin show an antioxidant activity comparable to eugenol (eugenol ORAC value = 2.12 ± 0.08; vanillin ORAC value = 1.81 ± 0.19). This study, comparing the antimicrobial and antioxidant activities of three guaiacol derivatives, enhances their use in future applications as food additives for contrasting both common pathogens and spoilage bacteria and for improving the shelf life of preserved food.
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13
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Coutinho TDNP, Barroso FDD, da Silva CR, da Silva AR, Cabral VPDF, Sá LGDAV, Cândido TM, da Silva LJ, Ferreira TL, da Silva WMB, Silva J, Marinho ES, Cavalcanti BC, Moraes MO, Nobre Júnior H, Andrade Neto JBD. EFFECTS OF KETAMINE IN METHICILLIN RESISTANT S. aureus AND IN SILICO INTERACTION WITH SORTASE A. Can J Microbiol 2021; 67:885-893. [PMID: 34314621 DOI: 10.1139/cjm-2021-0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the main human pathogens and is responsible for many diseases ranging from skin infections to more invasive infections. These infections are dangerous and expensive to treat because these strains are resistant to a large number of conventional antibiotics. Having said that, Antibacterial effect of ketamine against MRSA strains, its mechanism of action and in silico interaction with sortase A was evaluated. The antibacterial effect of ketamine was assessed by the broth microdilution method. Subsequently, the mechanism of action was assessed using flow cytometry and molecular docking assays with sortase A. Our results showed that Ketamine has a significant antibacterial activity against MRSA strains in the range of 2.49 to 3.73 mM. Their mechanism of action involves alterations in the membrane integrity and DNA damage, reducing cell viability that provoke death by apoptosis. In addition, Ketamine compound had affinity for S. aureus sortase A. These results indicate that this compound can be an alternative to develop new strategies to combat of infections caused by MRSA.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Jacilene Silva
- State University of Ceara, 67843, Fortaleza, CE, Brazil;
| | | | | | | | - Hélio Nobre Júnior
- Federal University of Ceará, Department of Clinical and Toxicological Analysis, Rua Capitão Francisco Pedro, 1210 - Rodolfo Teófilo, Fortaleza, Brazil, 60430-370;
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14
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Ren T, Zhu H, Tian L, Yu Q, Li M. Candida albicans infection disturbs the redox homeostasis system and induces reactive oxygen species accumulation for epithelial cell death. FEMS Yeast Res 2021; 20:5643898. [PMID: 31769804 DOI: 10.1093/femsyr/foz081] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 11/25/2019] [Indexed: 02/07/2023] Open
Abstract
Candida albicans is a common pathogenic fungus with high mortality in immunocompromised patients. However, the mechanism by which C. albicans invades host epithelial cells and causes serious tissue damage remains to be further investigated. In this study, we established the C. albicans-293T renal epithelial cell interaction model to investigate the mechanism of epithelial infection by this pathogen. It was found that C. albicans infection causes severe cell death and reactive oxygen species (ROS) accumulation in epithelial cells. Further investigations revealed that C. albicans infection might up-regulate expression of nicotinamide adenine dinucleotide phosphate (NAPDH) oxidase (NOX), inhibit the activity of the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT), and suppress the p38-Nrf2-heme oxygenase-1 (HO-1) pathway which plays an important role in the elimination of intracellular ROS. Furthermore, epithelial cell death caused by the fungal infection could be strikingly alleviated by addition of the antioxidant agent glutathione, indicating the critical role of ROS accumulation in cell death caused by the fungus. This study revealed that disturbance of the redox homeostasis system and ROS accumulation in epithelial cells is involved in cell death caused by C. albicans infection, which sheds light on the application of antioxidants in the suppression of tissue damage caused by fungal infection.
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Affiliation(s)
- Tongtong Ren
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, P. R. China
| | - Hangqi Zhu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, P. R. China
| | - Lei Tian
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, P. R. China
| | - Qilin Yu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, P. R. China
| | - Mingchun Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, P. R. China
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15
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Zhang J, Yang C, Zhu L, Wang Y, Yang C, Li Q, Bai J, Li W, Zhang P. Evaluation of the volatile from Lonicera macranthoides obtained with different processing methods by headspace–solid-phase microextraction–gas chromatography–tandem mass spectrometry (HS–SPME–GC–MS). CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01560-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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16
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Benzenetriol-Derived Compounds against Citrus Canker. Molecules 2021; 26:molecules26051436. [PMID: 33800893 PMCID: PMC7961829 DOI: 10.3390/molecules26051436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 11/17/2022] Open
Abstract
In order to replace the huge amounts of copper salts used in citrus orchards, alternatives have been sought in the form of organic compounds of natural origin with activity against the causative agent of citrus canker, the phytopathogen Xanthomonas citri subsp. Citri. We synthesized a series of 4-alkoxy-1,2-benzene diols (alkyl-BDOs) using 1,2,4-benzenetriol (BTO) as a starting material through a three-step synthesis route and evaluated their suitability as antibacterial compounds. Our results show that alkyl ethers derived from 1,2,4-benzenetriol have bactericidal activity against X. citri, disrupting the bacterial cell membrane within 15 min. Alkyl-BDOs were also shown to remain active against the bacteria while in solution, and presented low toxicity to (human) MRC-5 cells. Therefore, we have demonstrated that 1,2,4-benzenetriol—a molecule that can be obtained from agricultural residues—is an adequate precursor for the synthesis of new compounds with activity against X. citri.
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17
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Rosa TFD, Machado CDS, Serafin MB, Bottega A, Coelho SS, Foletto VS, Rampelotto RF, Lorenzoni VV, Mainardi A, Hörner R. Repurposing of escitalopram oxalate and clonazepam in combination with ciprofloxacin and sulfamethoxazole-trimethoprim for treatment of multidrug-resistant microorganisms and evaluation of the cleavage capacity of plasmid DNA. Can J Microbiol 2021; 67:599-612. [PMID: 33481681 DOI: 10.1139/cjm-2020-0546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bacterial resistance has become one of the most serious public health problems, globally, and drug repurposing is being investigated to speed up the identification of effective drugs. The aim of this study was to investigate the repurposing of escitalopram oxalate and clonazepam drugs individually, and in combination with the antibiotics ciprofloxacin and sulfamethoxazole-trimethoprim, to treat multidrug-resistant (MDR) microorganisms and to evaluate the potential chemical nuclease activity. The minimum inhibitory concentration, minimum bactericidal concentration, fractional inhibitory concentration index, and tolerance level were determined for each microorganism tested. In vitro antibacterial activity was evaluated against 47 multidrug-resistant clinical isolates and 11 standard bacterial strains from the American Type Culture Collection. Escitalopram oxalate was mainly active against Gram-positive bacteria, and clonazepam was active against both Gram-positive and Gram-negative bacteria. When associated with the two antibiotics mentioned, they had a significant synergistic effect. Clonazepam cleaved plasmid DNA, and the mechanisms involved were oxidative and hydrolytic. These results indicate the potential for repurposing these non-antibiotic drugs to treat bacterial infections. However, further studies on the mechanism of action of these drugs should be performed to ensure their safe use.
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Affiliation(s)
- Taciéli F da Rosa
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Catrine de S Machado
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Marissa B Serafin
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Angelita Bottega
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Silvana S Coelho
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Vitória S Foletto
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Roberta F Rampelotto
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Vinícius V Lorenzoni
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Amanda Mainardi
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Rosmari Hörner
- Laboratory of Bacteriology, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Santa Maria, Santa Maria, RS, Brazil
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18
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Chang HJ, Kim YH, Kang YH, Choi MH, Lee JH. Antioxidant and antibacterial effects of medicinal plants and their stick-type medicinal concentrated beverages. Food Sci Biotechnol 2020; 29:1413-1423. [PMID: 32999749 DOI: 10.1007/s10068-020-00793-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 05/23/2020] [Accepted: 07/06/2020] [Indexed: 11/25/2022] Open
Abstract
Nine medicinal plants and their stick-type medicinal concentrated beverages (SMCB-I and SMCB-II) with different combination ratio were evaluated on antioxidant, nitric oxide (NO) inhibitory, and antibacterial effects against pathogenic bacteria involved in respiratory system illnesses. Antioxidant activity was high in Syzygium aromaticum, Pueraria lobata, Plantago asiatica, and Kalopanax pictus which have higher contents of total phenolics and total flavonoids. The NO inhibitory activity was high in Syzygium aromaticum, Plantago asiatica, and Glycyrrhiza uralensis. Syzygium aromaticum, Plantago asiatica, Kalopanax pictus and Glycyrrhiza uralensis showed higher antibacterial activity than the other five medicinal plants against Staphylococcus aureus, Corynebacterium diphtheriae, and Mycobacterium sp. SMCB-II exhibited higher antioxidant, NO inhibitory, and antibacterial effects than SMCB-I, since Syzygium aromaticum, Pueraria lobata, and Kalopanax pictus were only used for the production of SMCB-II. The SMCBs would be expected to contribute to an easy-to-carry, easy-to-consume, and high value-added health beverage for the modern people.
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Affiliation(s)
- Hyeon-Jun Chang
- Department of Food and Nutrition, Daegu University, Gyeonsan, 38453 Korea
| | - Yoon-Hee Kim
- Department of Food and Nutrition, Daegu University, Gyeonsan, 38453 Korea
| | - Yun-Hwan Kang
- National Institute for Korean Medicine Development, Gyeonsan, 38540 Korea
| | | | - Jeung-Hee Lee
- Department of Food and Nutrition, Daegu University, Gyeonsan, 38453 Korea
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19
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Foletto VS, Serafin MB, Bottega A, da Rosa TF, Machado CDS, Coelho SS, Hörner R. Repositioning of fluoxetine and paroxetine: study of potential antibacterial activity and its combination with ciprofloxacin. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02507-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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de S. Machado C, da Rosa TF, Serafin MB, Bottega A, Coelho SS, Foletto VS, Rampelotto RF, Lorenzoni VV, de L. Marion S, Hörner R. In vitro evaluation of the antibacterial activity of amitriptyline and its synergistic effect with ciprofloxacin, sulfamethoxazole–trimethoprim, and colistin as an alternative in drug repositioning. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02470-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Polaquini CR, Morão LG, Nazaré AC, Torrezan GS, Dilarri G, Cavalca LB, Campos DL, Silva IC, Pereira JA, Scheffers DJ, Duque C, Pavan FR, Ferreira H, Regasini LO. Antibacterial activity of 3,3'-dihydroxycurcumin (DHC) is associated with membrane perturbation. Bioorg Chem 2019; 90:103031. [PMID: 31238181 DOI: 10.1016/j.bioorg.2019.103031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/24/2019] [Accepted: 06/03/2019] [Indexed: 12/15/2022]
Abstract
Curcumin is a plant diphenylheptanoid and has been investigated for its antibacterial activity. However, the therapeutic uses of this compound are limited due to its chemical instability. In this work, we evaluated the antimicrobial activity of diphenylheptanoids derived from curcumin against Gram-positive and Gram-negative bacteria, and also against Mycobacterium tuberculosis in terms of MIC (Minimum Inhibitory Concentration) and MBC (Minimum Bactericidal Concentration) values. 3,3'-Dihydroxycurcumin (DHC) displayed activity against Enterococcus faecalis, Staphylococcus aureus and M. tuberculosis, demonstrating MIC values of 78 and 156 µg/mL. In addition, DHC was more stable than curcumin in acetate buffer (pH 5.0) and phosphate buffer (pH 7.4) for 24 h at 37 °C. We proposed that membrane and the cell division protein FtsZ could be the targets for DHC due to that fact that curcumin exhibits this mode of antibacterial action. Fluorescence microscopy of Bacillus subtilis stained with SYTO9 and propidium iodide fluorophores indicated that DHC has the ability to perturb the bacterial membrane. On the other hand, DHC showed a weak inhibition of the GTPase activity of B. subtilis FtsZ. Toxicity assay using human cells indicated that DHC has moderate capacity to reduce viability of liver cells (HepG2 line) and lung cells (MRC-5 and A549 lines) when compared with doxorubicin. Alkaline comet assay indicated that DHC was not able to induce DNA damage in A549 cell line. These results indicated that DHC is promising compound with antibacterial and antitubercular activities.
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Affiliation(s)
- Carlos R Polaquini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Luana G Morão
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil
| | - Ana C Nazaré
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Guilherme S Torrezan
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Guilherme Dilarri
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil
| | - Lúcia B Cavalca
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil; Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747, the Netherlands
| | - Débora L Campos
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Isabel C Silva
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil; Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Jessé A Pereira
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba 16015-050, Brazil
| | - Dirk-Jan Scheffers
- Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747, the Netherlands
| | - Cristiane Duque
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba 16015-050, Brazil
| | - Fernando R Pavan
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Henrique Ferreira
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil.
| | - Luis O Regasini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil.
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22
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Chowdhuri AR, Das B, Kumar A, Tripathy S, Roy S, Sahu SK. One-pot synthesis of multifunctional nanoscale metal-organic frameworks as an effective antibacterial agent against multidrug-resistant Staphylococcus aureus. NANOTECHNOLOGY 2017; 28:095102. [PMID: 28139466 DOI: 10.1088/1361-6528/aa57af] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Drug-resistant bacteria are an increasingly serious threat to global public health. In particular, infections from multidrug-resistant (MDR) Gram-positive bacteria (i.e. Staphylococcus aureus) are growing global health concerns. In this work, we report the first use of nanoscale metal-organic frameworks (NMOFs) coencapsulating an antibiotic (vancomycin) and targeting ligand (folic acid) in one pot to enhance therapeutic efficacy against MDR S. aureus. Zeolitic imidazolate framework (ZIF-8) NMOFs, which have globular morphologies coencapsulating vancomycin and folic acid, are characterized by transmission electron microscopy, field-emission scanning electron microscopy, powder x-ray diffraction, ulltraviolet-visible spectroscopy, and dynamic light-scattering techniques. We determined that the presence of folic acid on the surface of the NMOFs is significant in the sense of effective uptake by MDR S. aureus through endocytosis. The functionalized NMOFs transport vancomycin across the cell wall of MDR S. aureus and enhance antibacterial activity, which has been confirmed from studies of the minimum inhibitory concentration, minimum bactericidal concentration, cytotoxicity of bacterial cells, and generation of reactive oxygen species. This work shows that functionalized NMOFs hold great promise for effective treatment of MDR S. aureus.
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Affiliation(s)
- Angshuman Ray Chowdhuri
- Department of Applied Chemistry, Indian Institute of Technology (ISM), Dhanbad-826004, Jharkhand, India
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