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Melian C, Ploper D, Chehín R, Vignolo G, Castellano P. Impairment of Listeria monocytogenes biofilm developed on industrial surfaces by Latilactobacillus curvatus CRL1579 bacteriocin. Food Microbiol 2024; 121:104491. [PMID: 38637093 DOI: 10.1016/j.fm.2024.104491] [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: 01/08/2024] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 04/20/2024]
Abstract
The effect of lactocin AL705, bacteriocin produced by Latilactobacillus (Lat.) curvatus CRL1579 against Listeria biofilms on stainless steel (SS) and polytetrafluoroethylene (PTFE) coupons at 10 °C was investigated. L. monocytogenes FBUNT showed the greatest adhesion on both surfaces associated to the hydrophobicity of cell surface. Partially purified bacteriocin (800 UA/mL) effectively inhibited L. monocytogenes preformed biofilm through displacement strategy, reducing the pathogen by 5.54 ± 0.26 and 4.74 ± 0.05 log cycles at 3 and 6 days, respectively. The bacteriocin-producer decreased the pathogen biofilm by ∼2.84 log cycles. Control and Bac- treated samples reached cell counts of 7.05 ± 0.18 and 6.79 ± 0.06 log CFU/cm2 after 6 days of incubation. Confocal scanning laser microscopy (CLSM) allowed visualizing the inhibitory effect of lactocin AL705 on L. monocytogenes preformed biofilms under static and hydrodynamic flow conditions. A greater effect of the bacteriocin was found at 3 days independently of the surface matrix and pathogen growth conditions at 10 °C. As a more realistic approach, biofilm displacement strategy under continuous flow conditions showed a significant loss of biomass, mean thickness and substratum coverage of pathogen biofilm. These findings highlight the anti-biofilm capacity of lactocin AL705 and their potential application in food industries.
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Affiliation(s)
- Constanza Melian
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, T4000ILC, Tucumán, Argentina
| | - Diego Ploper
- IMMCA (Instituto de Investigación en Medicina Molecular y Celular Aplicada, CONICET-Universidad Nacional de Tucumán-Ministerio de Salud Pública, Gobierno de Tucumán, Pje. Dorrego 1080, San Miguel de Tucumán, 4000, Tucumán, Argentina
| | - Rosana Chehín
- IMMCA (Instituto de Investigación en Medicina Molecular y Celular Aplicada, CONICET-Universidad Nacional de Tucumán-Ministerio de Salud Pública, Gobierno de Tucumán, Pje. Dorrego 1080, San Miguel de Tucumán, 4000, Tucumán, Argentina
| | - Graciela Vignolo
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, T4000ILC, Tucumán, Argentina
| | - Patricia Castellano
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, T4000ILC, Tucumán, Argentina.
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Vieira-da-Silva B, Castanho MARB. The structure and matrix dynamics of bacterial biofilms as revealed by antimicrobial peptides' diffusion. J Pept Sci 2022; 29:e3470. [PMID: 36537560 DOI: 10.1002/psc.3470] [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: 10/26/2022] [Revised: 12/11/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
From the biological point of view, bacterial biofilms are communities of bacteria embedded in a self-produced gel matrix composed of polysaccharides, DNA, and proteins. Considering the biophysical point of view, the biofilm matrix is a highly dense, crowded medium that imposes constraints to solute diffusion, depending on the size, conformational dynamics, and net charge. From the pharmacological point of view, biofilms are additional difficulties to drug development as heterogeneity in oxygen and nutrient distribution, and consequently, heterogeneity in bacterial metabolic status leads to recalcitrance. For peptide scientists, biofilms are both a challenge and an opportunity. Biofilms can be intruded by peptides, revealing important biological, biophysical, and pharmacological insights. Peptides can be engineered for different sizes, flexibilities, and net charges, unravelling the determinants of diffusion; they kill bacteria by lysis, overcoming the hurdles of metabolic status heterogeneity, and they are able to kill bacteria in the biofilm core, leaving the matrix intact, that is, without causing bacterial biofilm dispersion as side effect. This concise review addresses the knowledge reached while interrogating bacterial biofilms with peptides and other reporter molecules, and the advances therefrom in biology, biophysics, and drug development.
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Aluminum sulfate inhibits green mold by inducing chitinase activity of Penicillium digitatum and enzyme activity of citrus fruit. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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YEHIA HM, ALKHURIJI AF, SAVVAIDIS I, Al-MASOUD AH. Bactericidal effect of nisin and reuterin on methicillin-resistant Staphylococcus aureus (MRSA) and S. aureus ATCC 25937. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.105321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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PABON KSMUÑOZ, APONTE AAAYALA, DUQUE JFSOLANILLA, VILLADA HS. Characterization and antimicrobial efficacy of active biocomposite containing polylactic acid, oregano essential oil and nisin for pork storage. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.67420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Interplay between ESKAPE Pathogens and Immunity in Skin Infections: An Overview of the Major Determinants of Virulence and Antibiotic Resistance. Pathogens 2021; 10:pathogens10020148. [PMID: 33540588 PMCID: PMC7912840 DOI: 10.3390/pathogens10020148] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/16/2022] Open
Abstract
The skin is the largest organ in the human body, acting as a physical and immunological barrier against pathogenic microorganisms. The cutaneous lesions constitute a gateway for microbial contamination that can lead to chronic wounds and other invasive infections. Chronic wounds are considered as serious public health problems due the related social, psychological and economic consequences. The group of bacteria known as ESKAPE (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and Enterobacter sp.) are among the most prevalent bacteria in cutaneous infections. These pathogens have a high level of incidence in hospital environments and several strains present phenotypes of multidrug resistance. In this review, we discuss some important aspects of skin immunology and the involvement of ESKAPE in wound infections. First, we introduce some fundamental aspects of skin physiology and immunology related to cutaneous infections. Following this, the major virulence factors involved in colonization and tissue damage are highlighted, as well as the most frequently detected antimicrobial resistance genes. ESKAPE pathogens express several virulence determinants that overcome the skin's physical and immunological barriers, enabling them to cause severe wound infections. The high ability these bacteria to acquire resistance is alarming, particularly in the hospital settings where immunocompromised individuals are exposed to these pathogens. Knowledge about the virulence and resistance markers of these species is important in order to develop new strategies to detect and treat their associated infections.
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In vitro and In vivo Antibacterial Effects of Nisin Against Streptococcus suis. Probiotics Antimicrob Proteins 2021; 13:598-610. [PMID: 33404866 DOI: 10.1007/s12602-020-09732-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2020] [Indexed: 01/01/2023]
Abstract
Nisin is a promising therapeutic candidate because of its potent activity against Gram-positive bacteria. The present study aimed to describe the in vitro and in vivo antibacterial effects of nisin against Streptococcus suis, an important zoonotic pathogen. The minimal inhibitory concentrations (MICs) and minimal bactericidal concentrations (MBCs) of nisin against different S. suis strains ranged from 0.12 to 4.0 μg/mL and from 0.25 to 8.0 μg/mL, respectively. Time-killing curve assays illustrated that nisin killed 100% of tested virulent S. suis strains within 4 h when used at 2× MIC, which indicates the rapid bactericidal activity of nisin against the bacteria. Transmission and scanning electron microscopy revealed that nisin destroyed S. suis cell membrane integrity and affected its cellular ultrastructure, including a significantly wrinkled surface, intracellular content leakage, and cell lysis. In addition, nisin inhibited biofilm formation by S. suis in a concentration-dependent manner and exhibited strong degrading activities against preformed biofilms. More importantly, nisin displayed antimicrobial activity against S. suis infection in vivo. Upon treatment with 5.0-10 mg/kg nisin solution, the survival rates of mice challenged with a lethal dose of virulent S. suis virulent ranged 87.5-100%. Nisin significantly decreased bacterial proliferation and translocation in the mouse spleen, brain, and blood. These results indicate that nisin has potential as a novel antimicrobial agent for the clinical treatment and prevention of infection caused by S. suis in animals.
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Walsh DJ, Livinghouse T, Durling GM, Arnold AD, Brasier W, Berry L, Goeres DM, Stewart PS. Novel phenolic antimicrobials enhanced activity of iminodiacetate prodrugs against biofilm and planktonic bacteria. Chem Biol Drug Des 2021; 97:134-147. [PMID: 32844569 PMCID: PMC7821224 DOI: 10.1111/cbdd.13768] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/09/2020] [Accepted: 07/19/2020] [Indexed: 12/23/2022]
Abstract
Prodrugs are pharmacologically attenuated derivatives of drugs that undergo bioconversion into the active compound once reaching the targeted site, thereby maximizing their efficiency. This strategy has been implemented in pharmaceuticals to overcome obstacles related to absorption, distribution, and metabolism, as well as with intracellular dyes to ensure concentration within cells. In this study, we provide the first examples of a prodrug strategy that can be applied to simple phenolic antimicrobials to increase their potency against mature biofilms. The addition of (acetoxy)methyl iminodiacetate groups increases the otherwise modest potency of simple phenols. Biofilm-forming bacteria exhibit a heightened tolerance toward antimicrobial agents, thereby accentuating the need for new antibiotics as well as those, which incorporate novel delivery strategies to enhance activity toward biofilms.
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Affiliation(s)
- Danica J. Walsh
- Chemistry and BiochemistryMontana State UniversityBozemanMTUSA
- Center for Biofilm EngineeringMontana State UniversityBozemanMTUSA
| | - Tom Livinghouse
- Chemistry and BiochemistryMontana State UniversityBozemanMTUSA
| | - Greg M. Durling
- Chemistry and BiochemistryMontana State UniversityBozemanMTUSA
| | - Adrienne D. Arnold
- Center for Biofilm EngineeringMontana State UniversityBozemanMTUSA
- Microbiology and ImmunologyMontana State UniversityBozemanMTUSA
| | - Whitney Brasier
- Center for Biofilm EngineeringMontana State UniversityBozemanMTUSA
| | - Luke Berry
- Chemistry and BiochemistryMontana State UniversityBozemanMTUSA
| | - Darla M. Goeres
- Center for Biofilm EngineeringMontana State UniversityBozemanMTUSA
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Rodríguez-Mayor AV, Peralta-Camacho GJ, Cárdenas-Martínez KJ, García-Castañeda JE. Development of Strategies for Glycopeptide Synthesis: An Overview on the Glycosidic Linkage. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200701121037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Glycoproteins and glycopeptides are an interesting focus of research, because of
their potential use as therapeutic agents, since they are related to carbohydrate-carbohydrate,
carbohydrate-protein, and carbohydrate-lipid interactions, which are commonly involved in
biological processes. It has been established that natural glycoconjugates could be an important
source of templates for the design and development of molecules with therapeutic applications.
However, isolating large quantities of glycoconjugates from biological sources
with the required purity is extremely complex, because these molecules are found in heterogeneous
environments and in very low concentrations. As an alternative to solving this
problem, the chemical synthesis of glycoconjugates has been developed. In this context,
several methods for the synthesis of glycopeptides in solution and/or solid-phase have been
reported. In most of these methods, glycosylated amino acid derivatives are used as building
blocks for both solution and solid-phase synthesis. The synthetic viability of glycoconjugates is a critical parameter
for allowing their use as drugs to mitigate the impact of microbial resistance and/or cancer. However, the
chemical synthesis of glycoconjugates is a challenge, because these molecules possess multiple reaction sites and
have a very specific stereochemistry. Therefore, it is necessary to design and implement synthetic routes, which
may involve various protection schemes but can be stereoselective, environmentally friendly, and high-yielding.
This review focuses on glycopeptide synthesis by recapitulating the progress made over the last 15 years.
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Mourenza Á, Gil JA, Mateos LM, Letek M. Alternative Anti-Infective Treatments to Traditional Antibiotherapy against Staphylococcal Veterinary Pathogens. Antibiotics (Basel) 2020; 9:antibiotics9100702. [PMID: 33076497 PMCID: PMC7602553 DOI: 10.3390/antibiotics9100702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/29/2022] Open
Abstract
The genus Staphylococcus encompasses many species that may be pathogenic to both humans and farm animals. These bacteria have the potential to acquire multiple resistant traits to the antimicrobials currently used in the veterinary or medical settings. These pathogens may commonly cause zoonoses, and the infections they cause are becoming difficult to treat due to antimicrobial resistance. Therefore, the development of novel alternative treatments to traditional antibiotherapy has gained interest in recent years. Here, we reviewed the most promising therapeutic strategies developed to control staphylococcal infections in the veterinary field to overcome antibiotic resistance.
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Affiliation(s)
- Álvaro Mourenza
- Departamento de Biología Molecular, Área de Microbiología, Universidad de León, 24071 León, Spain; (Á.M.); (J.A.G.)
| | - José A. Gil
- Departamento de Biología Molecular, Área de Microbiología, Universidad de León, 24071 León, Spain; (Á.M.); (J.A.G.)
- Instituto de Biología Molecular, Genómica y Proteómica (INBIOMIC), Universidad de León, 24071 León, Spain
| | - Luis M. Mateos
- Departamento de Biología Molecular, Área de Microbiología, Universidad de León, 24071 León, Spain; (Á.M.); (J.A.G.)
- Instituto de Biología Molecular, Genómica y Proteómica (INBIOMIC), Universidad de León, 24071 León, Spain
- Correspondence: (L.M.M.); (M.L.)
| | - Michal Letek
- Departamento de Biología Molecular, Área de Microbiología, Universidad de León, 24071 León, Spain; (Á.M.); (J.A.G.)
- Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), Universidad de León, 24071 León, Spain
- Correspondence: (L.M.M.); (M.L.)
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