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Visockis M, Ruzgys P, Gelažunaitė S, Vykertas S, Šatkauskas S. Application of pulsed electric field (PEF) as a strategy to enhance aminoglycosides efficacy against Gram-negative bacteria. Bioelectrochemistry 2025; 164:108935. [PMID: 39933400 DOI: 10.1016/j.bioelechem.2025.108935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2024] [Revised: 01/31/2025] [Accepted: 02/04/2025] [Indexed: 02/13/2025]
Abstract
In this study, two aminoglycosides (AGs), Kanamycin and Gentamicin, with similar modes of action and molecular weights, were combined with PEF treatment to enhance the inactivation of E. coli cells. Various PEF strengths were applied to assess the combined effect. To compare the inactivation efficacy of different AGs, bacterial growth measurements in suspension were performed at 3 and 10 h intervals over a 10-h period after PEF treatment. Interestingly, it was found that the additive effect of PEF treatment on E. coli growth inhibition was significantly greater with Kanamycin (IC50) than with Gentamicin (IC50). Further analysis revealed that the combined treatment with Kanamycin (IC50) was most effective within a timeframe of around 3 h. Our findings suggest that PEF treatment can significantly enhance the efficacy of AGs against Gram-negative bacteria; however, the extent of the additive effect varies depending on the specific antibiotic and the intensity of the applied PEF treatment.
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Affiliation(s)
- Mindaugas Visockis
- Research Institute of Natural Sciences and Technology, Faculty of Natural Sciences, Vytautas Magnus University, Universiteto Str. 10, Akademija, Kaunas District, LT-53361, Lithuania
| | - Paulius Ruzgys
- Research Institute of Natural Sciences and Technology, Faculty of Natural Sciences, Vytautas Magnus University, Universiteto Str. 10, Akademija, Kaunas District, LT-53361, Lithuania
| | - Simona Gelažunaitė
- Research Institute of Natural Sciences and Technology, Faculty of Natural Sciences, Vytautas Magnus University, Universiteto Str. 10, Akademija, Kaunas District, LT-53361, Lithuania
| | - Salvijus Vykertas
- Research Institute of Natural Sciences and Technology, Faculty of Natural Sciences, Vytautas Magnus University, Universiteto Str. 10, Akademija, Kaunas District, LT-53361, Lithuania
| | - Saulius Šatkauskas
- Research Institute of Natural Sciences and Technology, Faculty of Natural Sciences, Vytautas Magnus University, Universiteto Str. 10, Akademija, Kaunas District, LT-53361, Lithuania.
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2
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Souza JGS, Azevedo F, Borges MHR, Costa RC, Shiba T, Barak S, Mayer Y, Figueiredo LCD, Feres M, Barão VAR, Shibli JA. Microbiome modulation of implant-related infection by a novel miniaturized pulsed electromagnetic field device. NPJ Biofilms Microbiomes 2025; 11:36. [PMID: 40011461 DOI: 10.1038/s41522-025-00667-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2024] [Accepted: 02/10/2025] [Indexed: 02/28/2025] Open
Abstract
Dental implant-related infections, which lack effective therapeutic strategies, are considered the primary cause for treatment failure. Pulsed electromagnetic field (PEMF) technology has been introduced as a safe and effective modality for enhancing biological responses. However, the PEMF effect on modulating microbial diversity has not been explored. Thus, we tested a miniaturized PEMF biomedical device as a healing component for dental implants. PEMF activation did not alter the chemical composition, surface roughness, wettability, and electrochemical performance. PEMF effectively controlled chronic in vitro polymicrobial microbial accumulation. The in vivo study where devices were inserted in the patients' oral cavities and 16S RNA sequencing analysis evidenced a fivefold or more reduction in 23 bacterial species for PEMF group and the absence of some species for this group, including pathogens associated with implant-related infections. PEMF altered bacterial interactions and promoted specific bacterial pathways. PEMF has emerged as an effective strategy for controlling implant-related infections.
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Affiliation(s)
- João Gabriel S Souza
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, 07023-070, Brazil.
| | - Fabio Azevedo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, 07023-070, Brazil
| | - Maria Helena Rossy Borges
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo, 13414-903, Brazil
| | - Raphael Cavalcante Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo, 13414-903, Brazil
- School of Dentistry, Alfenas Federal University, Alfenas, Brazil
| | - Takahiko Shiba
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, 02115, USA
| | - Shlomo Barak
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, 07023-070, Brazil
| | - Yaniv Mayer
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel
| | | | - Magda Feres
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, 07023-070, Brazil
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, 02115, USA
| | - Valentim A R Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo, 13414-903, Brazil
| | - Jamil A Shibli
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, 07023-070, Brazil
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Spiegel C, Coraça-Huber DC, Nogler M, Arora R, Putzer D. Cold Plasma Activity Against Biofilm Formation of Prosthetic Joint Infection Pathogens. Pathogens 2024; 14:10. [PMID: 39860971 PMCID: PMC11768226 DOI: 10.3390/pathogens14010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2024] [Revised: 12/25/2024] [Accepted: 12/27/2024] [Indexed: 01/27/2025] Open
Abstract
Periprosthetic joint infections occur in 1-2% of all patients undergoing prosthetic joint surgeries. Although strong efforts have been made to reduce infection rates, conventional therapies like one- or two-stage revisions have failed to lower the infection rates. Cold atmospheric plasma (CAP) has shown promising results in reducing bacterial loads on surfaces. In this study, we aimed to investigate the ability of CAP to reduce the bacterial load on metal surfaces with varying distances and different plasma compositions below a temperature suitable for in vivo applications. Methods: Biofilm was formed with Staphylococcus aureus ATCC 29213 and Staphylococcus epidermidis ATCC 12228 cultures on TMZF discs. Plasma treatments using air plasma and argon plasma were conducted on discs containing the established biofilm while the temperature was measured. During the experiments, the duration and the distance of plasma application varied. Afterwards, colony-forming units were counted. Results: The results of this study showed that air and argon plasma could be considered for applications during surgeries at a 1 cm distance. While air plasma showed the highest efficiency in CFU reduction, the temperature generation due to the presence of oxygen poses a limitation concerning the duration of application. The use of argon as a plasma generator does not show the temperature limitation in correlation to exposure time. The use of air plasma with a distance of 1 cm to the application site and an exposure time of 5 s showed the most effective bacterial reduction while not exceeding tissue-damaging temperatures.
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Affiliation(s)
- Christopher Spiegel
- Research Laboratory for Biofilms and Implant Associated Infections (BIOFILM LAB), Experimental Orthopaedics, University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria;
| | - Débora C. Coraça-Huber
- Research Laboratory for Biofilms and Implant Associated Infections (BIOFILM LAB), Experimental Orthopaedics, University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria;
| | - Michael Nogler
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (M.N.); (R.A.); (D.P.)
| | - Rohit Arora
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (M.N.); (R.A.); (D.P.)
| | - David Putzer
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (M.N.); (R.A.); (D.P.)
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4
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Feng P, Liu J, Bao LJ, Zeng EY, Ma C, Wang L, Zhang G, Gong X. Adaptive Escape of Pseudomonas aeruginosa by Application of Low-Amplitude Electric Pulses. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14281-14290. [PMID: 38967331 DOI: 10.1021/acs.langmuir.4c00753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Marine antibiofouling using low-amplitude electric pulses (EP) is an energy-efficient and eco-friendly approach, but potential mechanisms for preventing biofouling remain unclear. In the present study, the 3D adhesion dynamics of a model microorganism─Pseudomonas aeruginosa (PAO1)─under low-amplitude cathodic EP were examined as a function of applying voltage and its duration (td). The results demonstrated that adhered bacteria escaped from the electrode surface even when EP was removed. The escaped bacteria ratio, induction period of escape, and duration of the detachment were influenced profoundly by EP amplitude but slightly by td when td ≥ 5 min. The acceleration of escaped PAO1 from the surface indicated that their flagellar motor was powered by EP. Particularly, EP enabled swimming bacteria to have adaptive motions that were sustainable and regulated by the gene rsmA. As a result, they had less accumulation near the surface. The propulsion of adhered bacteria and adaptive escape of swimming bacteria were enhanced in response to low-amplitude EP. Hence, low-amplitude and short-duration EP is promising for sustainable antibiofouling applications.
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Affiliation(s)
- Pu Feng
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China
| | - Jun Liu
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Lian-Jun Bao
- Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 511443, China
| | - Eddy Y Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 511443, China
| | - Chunfeng Ma
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Lingling Wang
- State Key Laboratory of Applied Microbiology Southern China, Institute of Micrology, Academy of Sciences, Guangdong 510070, China
| | - Guangzhao Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xiangjun Gong
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology, Guangzhou 510640, China
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5
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Ban GH, Kim SH, Kang DH, Park SH. Comparison of the efficacy of physical and chemical strategies for the inactivation of biofilm cells of foodborne pathogens. Food Sci Biotechnol 2023; 32:1679-1702. [PMID: 37780592 PMCID: PMC10533464 DOI: 10.1007/s10068-023-01312-2] [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: 01/15/2023] [Revised: 04/03/2023] [Accepted: 04/13/2023] [Indexed: 10/03/2023] Open
Abstract
Biofilm formation is a strategy in which microorganisms generate a matrix of extracellular polymeric substances to increase survival under harsh conditions. The efficacy of sanitization processes is lowered when biofilms form, in particular on industrial devices. While various traditional and emerging technologies have been explored for the eradication of biofilms, cell resistance under a range of environmental conditions renders evaluation of the efficacy of control challenging. This review aimed to: (1) classify biofilm control measures into chemical, physical, and combination methods, (2) discuss mechanisms underlying inactivation by each method, and (3) summarize the reduction of biofilm cells after each treatment. The review is expected to be useful for future experimental studies and help to guide the establishment of biofilm control strategies in the food industry.
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Affiliation(s)
- Ga-Hee Ban
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul, 03760 Republic of Korea
| | - Soo-Hwan Kim
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute of Agricultural and Life Sciences, Seoul National University, Seoul, 08826 Republic of Korea
| | - Dong-Hyun Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute of Agricultural and Life Sciences, Seoul National University, Seoul, 08826 Republic of Korea
| | - Sang-Hyun Park
- Department of Food Science and Technology, Kongju National University, Yesan, Chungnam 32439 Republic of Korea
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6
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Ning Z, Zhang L, Cai L, Xu X, Chen Y, Wang H. Biofilm removal mediated by Salmonella phages from chicken-related sources. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2023.02.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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7
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Chin JD, Zhao L, Mayberry TG, Cowan BC, Wakefield MR, Fang Y. Photodynamic Therapy, Probiotics, Acetic Acid, and Essential Oil in the Treatment of Chronic Wounds Infected with Pseudomonas aeruginosa. Pharmaceutics 2023; 15:1721. [PMID: 37376169 PMCID: PMC10301549 DOI: 10.3390/pharmaceutics15061721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
As a prevalent medical problem that burdens millions of patients across the world, chronic wounds pose a challenge to the healthcare system. These wounds, often existing as a comorbidity, are vulnerable to infections. Consequently, infections hinder the healing process and complicate clinical management and treatment. While antibiotic drugs remain a popular treatment for infected chronic wounds, the recent rise of antibiotic-resistant strains has hastened the need for alternative treatments. Future impacts of chronic wounds are likely to increase with aging populations and growing obesity rates. With the need for more effective novel treatments, promising research into various wound therapies has seen an increased demand. This review summarizes photodynamic therapy, probiotics, acetic acid, and essential oil studies as developing antibiotic-free treatments for chronic wounds infected with Pseudomonas aeruginosa. Clinicians may find this review informative by gaining a better understanding of the state of current research into various antibiotic-free treatments. Furthermore. this review provides clinical significance, as clinicians may seek to implement photodynamic therapy, probiotics, acetic acid, or essential oils into their own practice.
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Affiliation(s)
- Jaeson D. Chin
- Department of Microbiology, Immunology & Pathology, Des Moines University, Des Moines, IA 50312, USA
| | - Lei Zhao
- The Department of Respiratory Medicine, The Second People’s Hospital of Hefei and Hefei Hospital Affiliated to Anhui Medical University, Hefei 230002, China
| | - Trenton G. Mayberry
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
| | - Braydon C. Cowan
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
| | - Mark R. Wakefield
- Department of Surgery, University of Missouri School of Medicine, Columbia, MO 65212, USA
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, USA
| | - Yujiang Fang
- Department of Microbiology, Immunology & Pathology, Des Moines University, Des Moines, IA 50312, USA
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8
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Ashrafudoulla M, Ulrich MSI, Toushik SH, Nahar S, Roy PK, Mizan FR, Park SH, Ha SD. Challenges and opportunities of non-conventional technologies concerning food safety. WORLD POULTRY SCI J 2023. [DOI: 10.1080/00439339.2023.2163044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Md. Ashrafudoulla
- Department of Food Science and Technology, Chung-Ang University, Anseong-Si, Republic of Korea
| | - Mevo S. I. Ulrich
- Department of Food Science and Technology, Chung-Ang University, Anseong-Si, Republic of Korea
| | | | - Shamsun Nahar
- Department of Food Science and Technology, Chung-Ang University, Anseong-Si, Republic of Korea
| | - Pantu Kumar Roy
- Department of Seafood Science and Technology, Gyeongsang National University, Tongyeong, Republic of Korea
| | - Furkanur Rahaman Mizan
- Department of Food Science and Technology, Chung-Ang University, Anseong-Si, Republic of Korea
| | - Si Hong Park
- Food Science and Technology, Oregon State University, Corvallis, Oregon, USA
| | - Sang-Do Ha
- Department of Food Science and Technology, Chung-Ang University, Anseong-Si, Republic of Korea
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9
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Dallagi H, Jha PK, Faille C, LE-Bail A, Rawson A, Benezech T. Removal of biocontamination in the food industry using physical methods; an overview. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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10
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Wang T, Cornel EJ, Li C, Du J. Drug delivery approaches for enhanced antibiofilm therapy. J Control Release 2023; 353:350-365. [PMID: 36473605 DOI: 10.1016/j.jconrel.2022.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/06/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
Biofilms have attracted increasing attention in recent years. Many bacterial infections are associated with biofilm formation. A bacterial biofilm is an aggregated membrane-like substance that is composed of a large number of bacteria and their secreted extracellular polymeric substances. The traditional antibiofilm approaches, such as chemotherapy based on antibiotics, are often ineffective in eradicating biofilms owing to the limited diffusion ability of antibiotics within biofilms and inactivation of antibiotics by biofilms. Moreover, a larger dosage of antibiotics could be effective, but leads to an increased tolerance. Smart drug delivery systems that deliver antibiotics into the biofilm interior is a promising strategy to meet this challenge. In this review, we focus on the methods to improve drug delivery efficiency for enhanced chemotherapy of biofilms. Furthermore, we have summarized chemical approaches for enhanced drug delivery, such as chemical shields, charge reversal, and dual corona enhanced delivery strategies; these methods focus on physicochemical biofilm properties and specific biofilm features. Afterwards, physical approaches are discussed, such as magnetism-mediated drug delivery, electricity-mediated drug delivery, ultrasound-mediated drug delivery, and shock wave-mediated drug delivery. Finally, a perspective on the development of next-generation antibiofilm drug delivery systems is given.
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Affiliation(s)
- Tao Wang
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Erik Jan Cornel
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Chang Li
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
| | - Jianzhong Du
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China; Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
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11
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Su Y, Yrastorza JT, Matis M, Cusick J, Zhao S, Wang G, Xie J. Biofilms: Formation, Research Models, Potential Targets, and Methods for Prevention and Treatment. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203291. [PMID: 36031384 PMCID: PMC9561771 DOI: 10.1002/advs.202203291] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/31/2022] [Indexed: 05/28/2023]
Abstract
Due to the continuous rise in biofilm-related infections, biofilms seriously threaten human health. The formation of biofilms makes conventional antibiotics ineffective and dampens immune clearance. Therefore, it is important to understand the mechanisms of biofilm formation and develop novel strategies to treat biofilms more effectively. This review article begins with an introduction to biofilm formation in various clinical scenarios and their corresponding therapy. Established biofilm models used in research are then summarized. The potential targets which may assist in the development of new strategies for combating biofilms are further discussed. The novel technologies developed recently for the prevention and treatment of biofilms including antimicrobial surface coatings, physical removal of biofilms, development of new antimicrobial molecules, and delivery of antimicrobial agents are subsequently presented. Finally, directions for future studies are pointed out.
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Affiliation(s)
- Yajuan Su
- Department of Surgery‐Transplant and Mary & Dick Holland Regenerative Medicine ProgramCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Jaime T. Yrastorza
- Department of Surgery‐Transplant and Mary & Dick Holland Regenerative Medicine ProgramCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Mitchell Matis
- Department of Surgery‐Transplant and Mary & Dick Holland Regenerative Medicine ProgramCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Jenna Cusick
- Department of Surgery‐Transplant and Mary & Dick Holland Regenerative Medicine ProgramCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Siwei Zhao
- Department of Surgery‐Transplant and Mary & Dick Holland Regenerative Medicine ProgramCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Guangshun Wang
- Department of Pathology and MicrobiologyCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Jingwei Xie
- Department of Surgery‐Transplant and Mary & Dick Holland Regenerative Medicine ProgramCollege of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
- Department of Mechanical and Materials EngineeringCollege of EngineeringUniversity of Nebraska‐LincolnLincolnNE68588USA
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12
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Sonawane JM, Rai AK, Sharma M, Tripathi M, Prasad R. Microbial biofilms: Recent advances and progress in environmental bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153843. [PMID: 35176385 DOI: 10.1016/j.scitotenv.2022.153843] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/15/2022] [Accepted: 02/09/2022] [Indexed: 05/21/2023]
Abstract
Microbial biofilms are formed by adherence of the bacteria through their secreted polymer matrices. The major constituents of the polymer matrices are extracellular DNAs, proteins, polysaccharides. Biofilms have exhibited a promising role in the area of bioremediation. These activities can be further improved by tuning the parameters like quorum sensing, characteristics of the adhesion surface, and other environmental factors. Organic pollutants have created a global concern because of their long-term toxicity on human, marine, and animal life. These contaminants are not easily degradable and continue to prevail in the environment for an extended period. Biofilms are being used for the remediation of different pollutants, among which organic pollutants have been of significance. The bioremediation of organic contaminants using biofilms is an eco-friendly, cheap, and green process. However, the development of this technology demands knowledge on the mechanism of action of the microbes to form the biofilm, types of specific bacteria or fungi responsible for the degradation of a particular organic compound, and the mechanistic role of the biofilm in the degradation of the pollutants. This review puts forth a comprehensive summary of the role of microbial biofilms in the bioremediation of different environment-threatening organic pollutants.
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Affiliation(s)
- Jayesh M Sonawane
- Department of Chemistry, Alexandre-Vachon Pavilion, Laval University, Quebec G1V 0A6, Canada
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology, Meghalaya, 793101, India
| | - Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, Uttar Pradesh, India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari 845401, Bihar, India.
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13
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Qi M, Liu Q, Liu Y, Yan H, Zhang Y, Yuan Y. Staphylococcus aureus biofilm inhibition by high voltage prick electrostatic field (HVPEF) and the mechanism investigation. Int J Food Microbiol 2022; 362:109499. [PMID: 34906789 DOI: 10.1016/j.ijfoodmicro.2021.109499] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/13/2021] [Accepted: 12/04/2021] [Indexed: 10/19/2022]
Abstract
The study was to investigate the inhibitory effect and mechanism of high voltage prick electrostatic field (HVPEF) on Staphylococcus aureus biofilms. Results showed that HVPEF effectively inactivated 24-h and 48-h established S. aureus biofilms, and the effect was verified on different food-contact materials. Confocal laser scanning microscopy and scanning electron microscopy analysis suggested that HVPEF disintegrated the established biofilms by killing the embedded bacteria, but it hardly reduced the bacteria adhesion. HVPEF also effectively inhibit the formation of S. aureus biofilms, the effects varied with electric voltage, treatment time and biofilm culture conditions. The direct effect of HVPEF on planktonic S. aureus was a possible mode of biofilm formation inhibition. HVPEF also suppressed biofilm formation by reducing the release of key compositions of extracellular polymeric substance, including extracellular DNA (eDNA), protein and polysaccharide intercellular adhesion (PIA), and regulating the expression of biofilm formation related genes (icaA, ebh, cidA, sarA, icaR and sigB). We propose HVPEF as a novel method to inhibit bacteria biofilm, based on the results, HVPEF has positive effects to prevent biofilm-associated contamination of S. aureus.
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Affiliation(s)
- Mengyuan Qi
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Qingyan Liu
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Ying Liu
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Haiyang Yan
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Yan Zhang
- College of Physics, Jilin University, Changchun 130062, China.
| | - Yuan Yuan
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
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14
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Dhivya R, Rajakrishnapriya VC, Sruthi K, Chidanand DV, Sunil CK, Rawson A. Biofilm combating in the food industry: Overview, non‐thermal approaches, and mechanisms. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- R. Dhivya
- Industry Academia Cell National Institute of Food Technology, Entrepreneurship and Management (NIFTEM) ‐ Thanjavur Thanjavur India
| | - V. C. Rajakrishnapriya
- Industry Academia Cell National Institute of Food Technology, Entrepreneurship and Management (NIFTEM) ‐ Thanjavur Thanjavur India
| | - K. Sruthi
- Industry Academia Cell National Institute of Food Technology, Entrepreneurship and Management (NIFTEM) ‐ Thanjavur Thanjavur India
| | - D. V. Chidanand
- Industry Academia Cell National Institute of Food Technology, Entrepreneurship and Management (NIFTEM) ‐ Thanjavur Thanjavur India
| | - C. K. Sunil
- Department of Food Engineering National Institute of Food Technology, Entrepreneurship and Management (NIFTEM) ‐ Thanjavur Thanjavur India
| | - Ashish Rawson
- Department of Food Safety and Quality Testing National Institute of Food Technology, Entrepreneurship and Management (NIFTEM) ‐ Thanjavur Thanjavur India
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15
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Martins Antunes de Melo WDC, Celiešiūtė-Germanienė R, Šimonis P, Stirkė A. Antimicrobial photodynamic therapy (aPDT) for biofilm treatments. Possible synergy between aPDT and pulsed electric fields. Virulence 2021; 12:2247-2272. [PMID: 34496717 PMCID: PMC8437467 DOI: 10.1080/21505594.2021.1960105] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Currently, microbial biofilms have been the cause of a wide variety of infections in the human body, reaching 80% of all bacterial and fungal infections. The biofilms present specific properties that increase the resistance to antimicrobial treatments. Thus, the development of new approaches is urgent, and antimicrobial photodynamic therapy (aPDT) has been shown as a promising candidate. aPDT involves a synergic association of a photosensitizer (PS), molecular oxygen and visible light, producing highly reactive oxygen species (ROS) that cause the oxidation of several cellular components. This therapy attacks many components of the biofilm, including proteins, lipids, and nucleic acids present within the biofilm matrix; causing inhibition even in the cells that are inside the extracellular polymeric substance (EPS). Recent advances in designing new PSs to increase the production of ROS and the combination of aPDT with other therapies, especially pulsed electric fields (PEF), have contributed to enhanced biofilm inhibition. The PEF has proven to have antimicrobial effect once it is known that extensive chemical reactions occur when electric fields are applied. This type of treatment kills microorganisms not only due to membrane rupture but also due to the formation of reactive compounds including free oxygen, hydrogen, hydroxyl and hydroperoxyl radicals. So, this review aims to show the progress of aPDT and PEF against the biofilms, suggesting that the association of both methods can potentiate their effects and overcome biofilm infections.
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Affiliation(s)
- Wanessa de Cassia Martins Antunes de Melo
- Department of Functional Materials and Electronics, Laboratory of Bioelectric, State Research Institute, Department of Functional Materials and Electronics, Center for Physical Sciences and Technology, Vilnius, Lithuania
| | - Raimonda Celiešiūtė-Germanienė
- Department of Functional Materials and Electronics, Laboratory of Bioelectric, State Research Institute, Department of Functional Materials and Electronics, Center for Physical Sciences and Technology, Vilnius, Lithuania
| | - Povilas Šimonis
- Department of Functional Materials and Electronics, Laboratory of Bioelectric, State Research Institute, Department of Functional Materials and Electronics, Center for Physical Sciences and Technology, Vilnius, Lithuania
| | - Arūnas Stirkė
- Department of Functional Materials and Electronics, Laboratory of Bioelectric, State Research Institute, Department of Functional Materials and Electronics, Center for Physical Sciences and Technology, Vilnius, Lithuania
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16
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Wu M, Rubin AE, Dai T, Schloss R, Usta OB, Golberg A, Yarmush M. High-Voltage, Pulsed Electric Fields Eliminate Pseudomonas aeruginosa Stable Infection in a Mouse Burn Model. Adv Wound Care (New Rochelle) 2021; 10:477-489. [PMID: 33066719 PMCID: PMC8260897 DOI: 10.1089/wound.2019.1147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 10/12/2020] [Indexed: 12/19/2022] Open
Abstract
Objective: The incidence of severe infectious complications after burn injury increases mortality by 40%. However, traditional approaches for managing burn infections are not always effective. High-voltage, pulsed electric field (PEF) treatment shortly after a burn injury has demonstrated an antimicrobial effect in vivo; however, the working parameters and long-term effects of PEF treatment have not yet been investigated. Approach: Nine sets of PEF parameters were investigated to optimize the applied voltage, pulse duration, and frequency or pulse repetition for disinfection of Pseudomonas aeruginosa infection in a stable mouse burn wound model. The bacterial load after PEF administration was monitored for 3 days through bioluminescence imaging. Histological assessments and inflammation response analyses were performed at 1 and 24 h after the therapy. Results: Among all tested PEF parameters, the best disinfection efficacy of P. aeruginosa infection was achieved with a combination of 500 V, 100 μs, and 200 pulses delivered at 3 Hz through two plate electrodes positioned 1 mm apart for up to 3 days after the injury. Histological examinations revealed fewer inflammatory signs in PEF-treated wounds compared with untreated infected burns. Moreover, the expression levels of multiple inflammatory-related cytokines (interleukin [IL]-1α/β, IL-6, IL-10, leukemia inhibitory factor [LIF], and tumor necrosis factor-alpha [TNF-α]), chemokines (macrophage inflammatory protein [MIP]-1α/β and monocyte chemoattractant protein-1 [MCP-1]), and inflammation-related factors (vascular endothelial growth factor [VEGF], macrophage colony-stimulating factor [M-CSF], and granulocyte-macrophage colony-stimulating factor [G-CSF]) were significantly decreased in the infected burn wound after PEF treatment. Innovation: We showed that PEF treatment on infected wounds reduces the P. aeruginosa load and modulates inflammatory responses. Conclusion: The data presented in this study suggest that PEF treatment is a potent candidate for antimicrobial therapy for P. aeruginosa burn infections.
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Affiliation(s)
- Mengjie Wu
- Department of Orthodontics, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Center of Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrey Ethan Rubin
- Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Tianhong Dai
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Rene Schloss
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
| | - Osman Berk Usta
- Center of Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Alexander Golberg
- Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Martin Yarmush
- Center of Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey, USA
- Shriners Burn Hospital for Children, Boston, Massachusetts, USA
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Emanuel E, Dubrovin I, Pogreb R, Pinhasi GA, Cahan R. Resuscitation of Pulsed Electric Field-Treated Staphylococcus aureus and Pseudomonas putida in a Rich Nutrient Medium. Foods 2021; 10:foods10030660. [PMID: 33808827 PMCID: PMC8003612 DOI: 10.3390/foods10030660] [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: 02/06/2021] [Revised: 03/04/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Pulsed electric fields (PEFs) technology was reported to be useful as a disinfection method in the liquid food industry. This technology may lead to membrane permeabilization and bacterial death. However, resuscitation of viable but non-culturable cells and sublethally injured microorganisms in food was reported to be associated with foodborne outbreaks. The main aim of this study was to investigate the possible recovery of injured PEF-treated bacteria. The PEF treatment of Staphylococcus aureus and Pseudomonas putida led to a reduction of 3.2 log10 and 4.8 log10, respectively. After 5 h, no colony forming units (CFUs) were observed when the bacteria were suspended in phosphate buffer saline (PBS); and for 24 h, no recovery was observed. The PEF-treated S. aureus in brain-heart infusion (BHI) medium were maintained at 1.84 × 104 CFU mL−1 for about 1.5 h. While P. putida decreased to zero CFU mL−1 by the 4th hour. However, after that, both bacteria recovered and began to multiply. Flow cytometry analysis showed that PEF treatment led to significant membrane permeabilization. Mass spectrometry analysis of PEF-treated P. putida which were suspended in BHI revealed over-expression of 22 proteins, where 55% were related to stress conditions. Understanding the recovery conditions of PEF-treated bacteria is particularly important in food industry pasteurization. To our knowledge, this is the first comprehensive study describing the recovery of injured PEF-treated S. aureus and P. putida bacteria.
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Affiliation(s)
- Efrat Emanuel
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
| | - Irina Dubrovin
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
| | - Roman Pogreb
- Department of Physics, Ariel University, Ariel 40700, Israel;
| | - Gad A. Pinhasi
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
| | - Rivka Cahan
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
- Correspondence: ; Tel.: +972-54-7740293
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19
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Poudel A, Oludiran A, Sözer EB, Casciola M, Purcell EB, Muratori C. Growth in a biofilm sensitizes Cutibacterium acnes to nanosecond pulsed electric fields. Bioelectrochemistry 2021; 140:107797. [PMID: 33773215 DOI: 10.1016/j.bioelechem.2021.107797] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 10/21/2022]
Abstract
The Gram-positive anaerobic bacterium Cutibacterium acnes (C. acnes) is a commensal of the human skin, but also an opportunistic pathogen that contributes to the pathophysiology of the skin disease acne vulgaris. C. acnes can form biofilms; cells in biofilms are more resilient to antimicrobial stresses. Acne therapeutic options such as topical or systemic antimicrobial treatments often show incomplete responses. In this study we measured the efficacy of nanosecond pulsed electric fields (nsPEF), a new promising cell and tissue ablation technology, to inactivate C. acnes. Our results show that all tested nsPEF doses (250 to 2000 pulses, 280 ns pulses, 28 kV/cm, 5 Hz; 0.5 to 4 kJ/ml) failed to inactivate planktonic C. acnes and that pretreatment with lysozyme, a naturally occurring cell-wall-weakening enzyme, increased C. acnes vulnerability to nsPEF. Surprisingly, growth in a biofilm appears to sensitize C. acnes to nsPEF-induced stress, as C. acnes biofilm-derived cells showed increased cell death after nsPEF treatments that did not affect planktonic cells. Biofilm inactivation by nsPEF was confirmed by treating intact biofilms grown on glass coverslips with an indium oxide conductive layer. Altogether our results show that, contrary to other antimicrobial agents, nsPEF kill more efficiently bacteria in biofilms than planktonic cells.
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Affiliation(s)
- Asia Poudel
- Old Dominion University, Department of Chemistry and Biochemistry, USA
| | - Adenrele Oludiran
- Old Dominion University, Department of Chemistry and Biochemistry, USA
| | - Esin B Sözer
- Old Dominion University, Frank Reidy Research Center for Bioelectrics, USA
| | - Maura Casciola
- Old Dominion University, Frank Reidy Research Center for Bioelectrics, USA; Center for Devices and Radiological Health, US Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Erin B Purcell
- Old Dominion University, Department of Chemistry and Biochemistry, USA.
| | - Claudia Muratori
- Old Dominion University, Frank Reidy Research Center for Bioelectrics, USA.
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20
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Liu D, Huang Q, Gu W, Zeng XA. A review of bacterial biofilm control by physical strategies. Crit Rev Food Sci Nutr 2021; 62:3453-3470. [PMID: 33393810 DOI: 10.1080/10408398.2020.1865872] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Biofilms are multicellular communities of microorganisms held together by a self-produced extracellular matrix, which contribute to hygiene problems in the food and medical fields. Both spoilage and pathogenic bacteria that grow in the complex structure of biofilm are more resistant to harsh environmental conditions and conventional antimicrobial agents. Therefore, it is important to develop eco-friendly preventive methodologies to eliminate biofilms from foods and food contact equipment. The present paper gives an overview of the current physical methods for biofilm control and removal. Current physical strategies adopted for the anti-biofilm treatment mainly focused on use of ultrasound power, electric or magnetic field, plasma, and irradiation. Furthermore, the mechanisms of anti-biofilm action and application of different physical methods are discussed. Physical strategies make it possible to combat biofilm without the use of biocidal agents. The remarkable microbiocidal properties of physical strategies are promising tools for antimicrobial applications.
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Affiliation(s)
- Dan Liu
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, PR China
| | - Quanfeng Huang
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, PR China
| | - Weiming Gu
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, PR China
| | - Xin-An Zeng
- School of Food Science & Engineering, South China University of Technology, Guangzhou, Guangdong, PR China
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21
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Mihut DM, Afshar A. Electrically assisted silver and copper coated filter papers with enhanced bactericidal effects. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Eradication of Saccharomyces cerevisiae by Pulsed Electric Field Treatments. Microorganisms 2020; 8:microorganisms8111684. [PMID: 33138324 PMCID: PMC7692574 DOI: 10.3390/microorganisms8111684] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/29/2022] Open
Abstract
One of the promising technologies that can inactivate microorganisms without heat is pulsed electric field (PEF) treatment. The aim of this study was to examine the influence of PEF treatment (2.9 kV cm−1, 100 Hz, 5000 pulses in trains mode of 500 pulses with a pulse duration of 10 µs) on Saccharomyces cerevisiae eradication and resealing in different conditions, such as current density (which is influenced by the medium conductivity), the sort of medium (phosphate buffered saline (PBS) vs. yeast malt broth (YMB) and a combined treatment of PEF with the addition of preservatives. When the S. cerevisiae were suspended in PBS, increasing the current density from 0.02 to 3.3 A cm−2 (corresponding to a total specific energy of 22.04 to 614.59 kJ kg−1) led to an increase of S. cerevisiae eradication. At 3.3 A cm−2, a total S. cerevisiae eradication was observed. However, when the S. cerevisiae in PBS was treated with the highest current density of 3.3 A cm−2, followed by dilution in a rich YMB medium, a phenomenon of cell membrane resealing was observed by flow cytometry (FCM) and CFU analysis. The viability of S. cerevisiae was also examined when the culture was exposed to repeating PEF treatments (up to four cycles) with and without the addition of preservatives. This experiment was performed when the S. cerevisiae were suspended in YMB containing tartaric acid (pH 3.4) and ethanol to a final concentration of 10% (v/v), which mimics wine. It was shown that one PEF treatment cycle led to a reduction of 1.35 log10, compared to 2.24 log10 when four cycles were applied. However, no synergic effect was observed when the preservatives, free SO2, and sorbic acid were added. This study shows the important and necessary knowledge about yeast eradication and membrane recovery processes after PEF treatment, in particular for application in the liquid food industry.
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23
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Liu Z, Hong CJ, Yang Y, Dai L, Ho CL. Advances in Bacterial Biofilm Management for Maintaining Microbiome Homeostasis. Biotechnol J 2020; 15:e1900320. [PMID: 32510869 DOI: 10.1002/biot.201900320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 05/26/2020] [Indexed: 12/11/2022]
Abstract
Certain microbial biofilm in the human-microbiota community can negatively impact the host microbiome. This gives rise to various methods to prevent the formation of biofilms or to facilitate biofilm dispersal from surfaces and tissues in the host. Despite all these efforts, these persistent microbial biofilms on surfaces and in the host tissue can result in health problems to the host and its microbiome. It is the adaptive behavior of microbes within the biofilm that confers on these tenacious microbes the resistance to harsh environments, antibiotic treatments, and the ability to evade the host immune system. In this review, the approaches to combat microbial biofilm in the last decade are discussed. The biochemical pathway regulating biofilm formation is first discussed, followed by the discussion of the three approaches to combat biofilm formation: physical, chemical, and biological approaches. The advances in these approaches have given rise to methods of effectively dispersing the microbial biofilm and preventing the adherence of these microbial communities altogether. As there are numerous approaches to target biofilm, in this review the attempt is to provide insights on how these approaches have been used to modulate the host-microbiome by looking at the individual strengths and weaknesses.
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Affiliation(s)
- Zhao Liu
- Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Can-Jian Hong
- Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Yongshuai Yang
- Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Lei Dai
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Chun Loong Ho
- Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
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24
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Huang DN, Wang J, Ren KF, Ji J. Functionalized biomaterials to combat biofilms. Biomater Sci 2020; 8:4052-4066. [PMID: 32500875 DOI: 10.1039/d0bm00526f] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Pathogenic microbial biofilms that readily form on implantable medical devices or human tissues have posed a great threat to worldwide healthcare. Hopes are focused on preventive strategies towards biofilms, leaving a thought-provoking question: how to tackle the problem of established biofilms? In this review, we briefly summarize the functionalized biomaterials to combat biofilms and highlight current approaches to eradicate pre-existing biofilms. We believe that all of these strategies, alone or in combination, could represent a blueprint for fighting biofilm-associated infections in the postantibiotic era.
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Affiliation(s)
- Dan-Ni Huang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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25
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Fang K, Park OJ, Hong SH. Controlling biofilms using synthetic biology approaches. Biotechnol Adv 2020; 40:107518. [PMID: 31953206 PMCID: PMC7125041 DOI: 10.1016/j.biotechadv.2020.107518] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 01/09/2020] [Accepted: 01/11/2020] [Indexed: 12/22/2022]
Abstract
Bacterial biofilms are formed by the complex but ordered regulation of intra- or inter-cellular communication, environmentally responsive gene expression, and secretion of extracellular polymeric substances. Given the robust nature of biofilms due to the non-growing nature of biofilm bacteria and the physical barrier provided by the extracellular matrix, eradicating biofilms is a very difficult task to accomplish with conventional antibiotic or disinfectant treatments. Synthetic biology holds substantial promise for controlling biofilms by improving and expanding existing biological tools, introducing novel functions to the system, and re-conceptualizing gene regulation. This review summarizes synthetic biology approaches used to eradicate biofilms via protein engineering of biofilm-related enzymes, utilization of synthetic genetic circuits, and the development of functional living agents. Synthetic biology also enables beneficial applications of biofilms through the production of biomaterials and patterning biofilms with specific temporal and spatial structures. Advances in synthetic biology will add novel biofilm functionalities for future therapeutic, biomanufacturing, and environmental applications.
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Affiliation(s)
- Kuili Fang
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Oh-Jin Park
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA; Department of Biological and Chemical Engineering, Yanbian University of Science and Technology, Yanji, Jilin, People's Republic of China
| | - Seok Hoon Hong
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA.
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26
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Angulo-Pineda C, Srirussamee K, Palma P, Fuenzalida VM, Cartmell SH, Palza H. Electroactive 3D Printed Scaffolds Based on Percolated Composites of Polycaprolactone With Thermally Reduced Graphene Oxide for Antibacterial and Tissue Engineering Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E428. [PMID: 32121237 PMCID: PMC7152842 DOI: 10.3390/nano10030428] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/14/2020] [Accepted: 02/20/2020] [Indexed: 02/07/2023]
Abstract
Applying electrical stimulation (ES) could affect different cellular mechanisms, thereby producing a bactericidal effect and an increase in human cell viability. Despite its relevance, this bioelectric effect has been barely reported in percolated conductive biopolymers. In this context, electroactive polycaprolactone (PCL) scaffolds with conductive Thermally Reduced Graphene Oxide (TrGO) nanoparticles were obtained by a 3D printing method. Under direct current (DC) along the percolated scaffolds, a strong antibacterial effect was observed, which completely eradicated S. aureus on the surface of scaffolds. Notably, the same ES regime also produced a four-fold increase in the viability of human mesenchymal stem cells attached to the 3D conductive PCL/TrGO scaffold compared with the pure PCL scaffold. These results have widened the design of novel electroactive composite polymers that could both eliminate the bacteria adhered to the scaffold and increase human cell viability, which have great potential in tissue engineering applications.
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Affiliation(s)
- Carolina Angulo-Pineda
- Department of Chemical Engineering and Biotechnology and Materials, University of Chile, Santiago 8370456, Chile
- Millenium Nuclei in Soft Smart Mechanical Metamaterials, Universidad de Chile, Santiago 8370456, Chile
| | - Kasama Srirussamee
- Department of Biomedical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang (KMITL), Bangkok 10520, Thailand;
| | - Patricia Palma
- Department of Pathology and Oral Medicine, University of Chile, Santiago 8380492, Chile;
| | | | - Sarah H. Cartmell
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK;
| | - Humberto Palza
- Department of Chemical Engineering and Biotechnology and Materials, University of Chile, Santiago 8370456, Chile
- Millenium Nuclei in Soft Smart Mechanical Metamaterials, Universidad de Chile, Santiago 8370456, Chile
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27
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Vadlamani RA, Dhanabal A, Detwiler DA, Pal R, McCarthy J, Seleem MN, Garner AL. Nanosecond electric pulses rapidly enhance the inactivation of Gram-negative bacteria using Gram-positive antibiotics. Appl Microbiol Biotechnol 2020; 104:2217-2227. [PMID: 31965221 DOI: 10.1007/s00253-020-10365-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/01/2020] [Accepted: 01/09/2020] [Indexed: 12/16/2022]
Abstract
Physically disrupting microorganism membranes to enable antibiotics to overcome resistance mechanisms that inhibit or excrete antibiotics has great potential for reducing antibiotic doses and rendering resistance mechanisms inert. We demonstrate the synergistic inactivation of a Gram-positive (Staphylococcus aureus) and two Gram-negative (Escherichia coli and Pseudomonas aeruginosa) bacteria by combining 222 30 kV/cm electric pulses (EPs) or 500 20 kV/cm EPs with 300-ns EP duration with various antibiotics with different mechanisms of action is demonstrated. Doses of antibiotics that produced no inactivation in 10 min of exposure in solution with bacteria induced several log reductions under the influence of nanosecond EPs. Combining 2 μg/L or 20 μg/mL of rifampicin with the 30 kV/cm EPs enhanced Staphylococcus aureus inactivation compared with EPs alone, while only a few of the other combinations demonstrated improvement. Combining 2 μg/L or 20 μg/mL of mupirocin or rifampicin with either EP train enhanced E. coli inactivation compared with EPs alone. Combining 2 μg/L or 20 μg/mL of erythromycin or vancomycin with the 30 kV/cm EPs enhanced E. coli inactivation compared with EPs alone. These results indicate that EPs can make Gram-positive antibiotics efficient for inactivating Gram-negative bacteria with future studies required to optimize EP parameters for other antibiotics and Gram-negative bacteria.
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Affiliation(s)
| | - Agni Dhanabal
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA
| | | | - Rusha Pal
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | | | - Mohamed N Seleem
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Allen L Garner
- School of Nuclear Engineering, Purdue University, West Lafayette, IN, USA. .,Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA. .,School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA.
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28
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What Are the Effects of Irreversible Electroporation on a Staphylococcus aureus Rabbit Model of Osteomyelitis? Clin Orthop Relat Res 2019; 477:2367-2377. [PMID: 31393339 PMCID: PMC6999922 DOI: 10.1097/corr.0000000000000882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The treatment of osteomyelitis can be challenging because of poor antibiotic penetration into the infected bone and toxicities associated with prolonged antibiotic regimens to control infection. Irreversible electroporation (IRE), a percutaneous image-guided ablation technology in which the targeted delivery of high-voltage electrical pulses permanently damages the cell membrane, has been shown to effectively control bacterial growth in various settings. However, IRE for the management of bone infections has yet to be evaluated. QUESTIONS/PURPOSES We aimed to evaluate IRE for treating osteomyelitis by assessing (1) the efficacy of IRE to suppress the in vitro growth of a clinical isolate of S. aureus, alone or combined with cefazolin; and (2) the effects of IRE on the in vivo treatment of a rabbit model of osteomyelitis. METHODS S. aureus strain UAMS-1 expanded in vitro to the log phase was subjected to an electric field of 2700 V/cm, which was delivered in increasing numbers of pulses. Immediately after electroporation, bacteria were plated on agar plates with or without cefazolin. The number of colony-forming units (CFUs) was scored the following day. ANOVA tests were used to analyze in vitro data. In a rabbit osteomyelitis model, we inoculated the same bacterial strain into the radius of adult male New Zealand White rabbits. Three weeks after inoculation, all animals (n = 32) underwent irrigation and débridement, as well as wound culture of the infected forelimb. Then, they were randomly assigned to one of four treatment groups (n = eight per group): untreated control, cefazolin only, IRE only, or combined IRE + cefazolin. Serial radiography was performed to assess disease progression using a semiquantitative grading scale. Bone and soft-tissue specimens from the infected and contralateral forelimbs were collected at 4 weeks after treatment for bacterial isolation and histologic assessment using a semiquantitative scale. RESULTS The in vitro growth of S. aureus UAMS-1 was impaired by IRE in a pulse-dependent fashion; the number of CFUs/mL was different among seven pulse levels, namely 0, 10, 30, 60, 90, 120, and 150 pulses. With the number of CFUs/mL observed in untreated controls set as 100%, 10 pulses rendered a median of 50.2% (range 47.1% to 58.2%), 30 pulses rendered a median of 2.7% (range 2.5% to 2.8%), 60 pulses rendered a median of 0.014% (range 0.012% to 0.015%), 90 pulses rendered a median of 0.004% (range 0.002% to 0.004%), 120 pulses rendered a median of 0.001% (range 0.001% to 0.001%), and 150 pulses rendered a median of 0.001% (range 0.000% to 0.001%) (Kruskal-Wallis test: p = 0.003). There was an interaction between the effect of the number of pulses and the concentration of cefazolin (two-way ANOVA: F [8, 30] = 17.24; p < 0.001), indicating that combining IRE with cefazolin is more effective than either treatment alone at suppressing the growth of S. aureus UAMS-1. Likewise, the clinical response in the rabbit model (the percentage of animals without detectable residual bacteria in the bone and surrounding soft tissue after treatment) was better in the combination group than in the other groups: control, 12.5% (one of eight animals); IRE only, 12.5% (one of eight animals); cefazolin only, 25% (two of eight animals); and IRE + cefazolin, 75% (six of eight animals) (two-sided Fisher's exact test: p = 0.030). CONCLUSIONS IRE effectively suppressed the growth of S. aureus UAMS-1 and enhanced the antibacterial effect of cefazolin in in vitro studies. When translated to a rabbit osteomyelitis model, the addition of IRE to conventional parenteral antibiotic treatment produced the strongest response, which supports the in vitro findings. CLINICAL RELEVANCE Our results show that IRE may improve the results of standard parenteral antibiotic treatment, thus setting the stage for models with larger animals and perhaps trials in humans for validation.
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Nanosecond duration pulsed electric field together with formic acid triggers caspase-dependent apoptosis in pathogenic yeasts. Bioelectrochemistry 2019; 128:148-154. [DOI: 10.1016/j.bioelechem.2019.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 04/08/2019] [Accepted: 04/08/2019] [Indexed: 01/13/2023]
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Lei W, Bruchmann J, Rüping JL, Levkin PA, Schwartz T. Biofilm Bridges Forming Structural Networks on Patterned Lubricant-Infused Surfaces. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900519. [PMID: 31380192 PMCID: PMC6662098 DOI: 10.1002/advs.201900519] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/21/2019] [Indexed: 05/05/2023]
Abstract
Despite many decades of research, biofilm architecture and spreading mechanisms are still not clear because of the heterogenous 3D structure within biofilms. Here, patterned "slippery" lubricant-infused porous surfaces are utilized to study biofilm structure of Pseudomonas aeruginosa, Stenotrophomonas maltophilia, and Staphylococcus aureus. It is found that bacteria are able to spread over bacteria-repellent lubricant-infused regions by using a mechanism, termed "biofilm bridges". Here, it is demonstrated that bacteria use bridges to form interconnected networks between distant biofilm colonies. Detailed structure of bridges shows a spatial distribution of bacteria with an accumulation of respiratory active bacteria and biomass in the bridges. The core-shell structure of bridges formed by two-species mixed population is illustrated. It is demonstrated that eDNA and nutrients have a strong effect on biofilm bridges formation. Thus, it is believed that biofilm bridging is important to reveal the structure and communication within biofilms.
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Affiliation(s)
- Wenxi Lei
- Institute of Toxicology and GeneticsKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz Platz 176344Eggenstein‐LeopoldshafenGermany
| | - Julia Bruchmann
- Institute of Functional InterfacesKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz Platz 176344Eggenstein‐LeopoldshafenGermany
| | - Jan Lars Rüping
- Institute of Functional InterfacesKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz Platz 176344Eggenstein‐LeopoldshafenGermany
| | - Pavel A. Levkin
- Institute of Toxicology and GeneticsKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz Platz 176344Eggenstein‐LeopoldshafenGermany
- Institute of Organic ChemistryKarlsruhe Institute of Technology76131KarlsruheGermany
| | - Thomas Schwartz
- Institute of Functional InterfacesKarlsruhe Institute of TechnologyHermann‐von‐Helmholtz Platz 176344Eggenstein‐LeopoldshafenGermany
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Pulsed electric fields for cardiac ablation and beyond: A state-of-the-art review. Heart Rhythm 2019; 16:1112-1120. [DOI: 10.1016/j.hrthm.2019.01.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Indexed: 12/15/2022]
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Low concentrations of acetic and formic acids enhance the inactivation of Staphylococcus aureus and Pseudomonas aeruginosa with pulsed electric fields. BMC Microbiol 2019; 19:73. [PMID: 30943901 PMCID: PMC6448289 DOI: 10.1186/s12866-019-1447-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 03/28/2019] [Indexed: 02/07/2023] Open
Abstract
Background Skin infections, particularly caused by drug-resistant pathogens, represent a clinical challenge due to being a frequent cause of morbidity and mortality. The objectives of this study were to examine if low concentrations of acetic and formic acids can increase sensitivity of Staphylococcus aureus and Pseudomonas aeruginosa to pulsed electric field (PEF) and thus, promote a fast and efficient treatment methodology for wound treatment. Results We have shown that the combination of PEF (10–30 kV/cm) with organic acids (0.1% formic and acetic acids) increased the bactericidal properties of treatment. The effect was apparent for both acids. The proposed methodology allowed to reduce the energy of electrical pulses and the inhibitory concentrations of acids, while still maintain high efficiency of bacteria eradication. Conclusions Application of weak organic acids as bactericidal agents has many advantages over antibiotics because they do not trigger development of drug-resistance in bacteria. The combination with PEF can make the treatment effective even against biofilms. The results of this study are particularly useful for the development of new methodologies for the treatment of extreme cases of wound infections when the chemical treatment is no longer effective or hinders wound healing.
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Influence of the current density in moderate pulsed electric fields on P. putida F1 eradication. Bioelectrochemistry 2019; 126:172-179. [DOI: 10.1016/j.bioelechem.2018.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 12/05/2018] [Accepted: 12/07/2018] [Indexed: 01/24/2023]
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Rubin AE, Usta OB, Schloss R, Yarmush M, Golberg A. Selective Inactivation of Pseudomonas aeruginosa and Staphylococcus epidermidis with Pulsed Electric Fields and Antibiotics. Adv Wound Care (New Rochelle) 2019; 8:136-148. [PMID: 31737412 DOI: 10.1089/wound.2018.0819] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 10/15/2018] [Indexed: 01/17/2023] Open
Abstract
Objective: Increasing numbers of multidrug-resistant bacteria make many antibiotics ineffective; therefore, new approaches to combat microbial infections are needed. In addition, antibiotics are not selective-they kill pathogenic organisms as well as organisms that could positively contribute to wound healing (bio flora). Approach: Here we report on selective inactivation of Pseudomonas aeruginosa and Staphylococcus epidermidis, potential pathogens involved in wound infections with pulsed electric fields (PEFs) and antibiotics (mix of penicillin, streptomycin, and nystatin). Results: Using a Taguchi experimental design in vitro, we found that, under similar electric field strengths, the pulse duration is the most important parameter for P. aeruginosa inactivation, followed by the number of pulses and pulse frequency. P. aeruginosa, a potential severe pathogen, is more sensitive than the less pathogenic S. epidermidis to PEF (alone or in combination with antibiotics). Applying 200 pulses with a duration of 60 μs at 2.8 Hz, the minimum electric fields of 308.8 ± 28.3 and 378.4 ± 12.9 V/mm were required to inactive P. aeruginosa and S. epidermidis, respectively. Addition of antibiotics reduced the threshold for minimum electric fields required to inactivate the bacteria. Innovation: This study provides essential information, such as critical electric field parameters for bacteria inactivation, required for developing in vivo treatment and clinical protocols for using PEF for wound healing. Conclusion: A combination of PEFs with antibiotics reduces the electric field threshold required for bacteria disinfection. Such an approach simplifies devices required to disinfect large areas of infected wounds.
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Affiliation(s)
- Andrey Ethan Rubin
- Porter School of Environment and Earth Sciences, Tel Aviv University Ramat Aviv, Tel Aviv, Israel
| | - Osman Berk Usta
- Center for Engineering in Medicine, Massachusetts General Hospital Shriners Burn Hospital for Children and Harvard Medical School, Boston, Massachusetts
| | - Rene Schloss
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey
| | - Martin Yarmush
- Center for Engineering in Medicine, Massachusetts General Hospital Shriners Burn Hospital for Children and Harvard Medical School, Boston, Massachusetts
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey
| | - Alexander Golberg
- Porter School of Environment and Earth Sciences, Tel Aviv University Ramat Aviv, Tel Aviv, Israel
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Palza H, Zapata PA, Angulo-Pineda C. Electroactive Smart Polymers for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E277. [PMID: 30654487 PMCID: PMC6357059 DOI: 10.3390/ma12020277] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/02/2019] [Accepted: 01/09/2019] [Indexed: 01/05/2023]
Abstract
The flexibility in polymer properties has allowed the development of a broad range of materials with electroactivity, such as intrinsically conductive conjugated polymers, percolated conductive composites, and ionic conductive hydrogels. These smart electroactive polymers can be designed to respond rationally under an electric stimulus, triggering outstanding properties suitable for biomedical applications. This review presents a general overview of the potential applications of these electroactive smart polymers in the field of tissue engineering and biomaterials. In particular, details about the ability of these electroactive polymers to: (1) stimulate cells in the context of tissue engineering by providing electrical current; (2) mimic muscles by converting electric energy into mechanical energy through an electromechanical response; (3) deliver drugs by changing their internal configuration under an electrical stimulus; and (4) have antimicrobial behavior due to the conduction of electricity, are discussed.
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Affiliation(s)
- Humberto Palza
- Departamento de Ingeniería Química, Biotecnología y Materiales, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, 8370456 Santiago, Chile.
- Millenium Nuclei in Soft Smart Mechanical Metamaterials, Universidad de Chile, 8370456 Santiago, Chile.
| | - Paula Andrea Zapata
- Grupo de Polímeros, Facultad de Química y Biología, Universidad de Santiago de Chile, 8350709 Santiago, Chile.
| | - Carolina Angulo-Pineda
- Departamento de Ingeniería Química, Biotecnología y Materiales, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, 8370456 Santiago, Chile.
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Yamashiro R, Misawa T, Sakudo A. Key role of singlet oxygen and peroxynitrite in viral RNA damage during virucidal effect of plasma torch on feline calicivirus. Sci Rep 2018; 8:17947. [PMID: 30560882 PMCID: PMC6298994 DOI: 10.1038/s41598-018-36779-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 11/26/2018] [Indexed: 12/25/2022] Open
Abstract
A dielectric barrier discharge (DBD) plasma torch has been used to evaluate the mechanism underlying inactivation of feline calicivirus (FCV) by plasma treatment. Plasma treatment of cell lysate infected with FCV F9 strain reduced the viral titer of the median tissue culture infectious dose (TCID50). The D value (treatment time required to lower the viral titer to 1/10) was 0.450 min, while the viral titer dropped below the detection limit within 2 min. FCV was not significantly inactivated by heat or UV applied at levels corresponding to those generated from the DBD plasma torch after 2 min (38.4 °C and 46.79 mJ/cm2 UV, respectively). However, TCID50 was reduced by 2.47 log after exposure to 4.62 mM ONOO−, corresponding to the concentration generated after 2 min of plasma treatment. Radical scavengers, including superoxide dismutase, dimethyl sulfoxide, and catalase, did not significantly affect viral titers; however, sodium azide, uric acid, and ascorbic acid, which are scavengers of 1O2 radicals, ONOO−, and peroxynitrous acid (ONOOH; produced from ONOO− under acidic conditions), respectively, significantly increased TCID50 and intact viral RNA. These findings suggest that ONOO− and 1O2 play an important role in FCV inactivation by attacking viral RNA during DBD plasma torch treatment.
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Affiliation(s)
- Risa Yamashiro
- Laboratory of Biometabolic Chemistry, School of Health Sciences, University of the Ryukyus, Nishihara, Okinawa, 903-0215, Japan
| | - Tatsuya Misawa
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering, Saga University, Saga, 840-8502, Japan
| | - Akikazu Sakudo
- Laboratory of Biometabolic Chemistry, School of Health Sciences, University of the Ryukyus, Nishihara, Okinawa, 903-0215, Japan.
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Khatoon Z, McTiernan CD, Suuronen EJ, Mah TF, Alarcon EI. Bacterial biofilm formation on implantable devices and approaches to its treatment and prevention. Heliyon 2018; 4:e01067. [PMID: 30619958 PMCID: PMC6312881 DOI: 10.1016/j.heliyon.2018.e01067] [Citation(s) in RCA: 620] [Impact Index Per Article: 88.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/17/2018] [Accepted: 12/17/2018] [Indexed: 02/06/2023] Open
Abstract
In living organisms, biofilms are defined as complex communities of bacteria residing within an exopolysaccharide matrix that adheres to a surface. In the clinic, they are typically the cause of chronic, nosocomial, and medical device-related infections. Due to the antibiotic-resistant nature of biofilms, the use of antibiotics alone is ineffective for treating biofilm-related infections. In this review, we present a brief overview of concepts of bacterial biofilm formation, and current state-of-the-art therapeutic approaches for preventing and treating biofilms. Also, we have reviewed the prevalence of such infections on medical devices and discussed the future challenges that need to be overcome in order to successfully treat biofilms using the novel technologies being developed.
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Affiliation(s)
- Zohra Khatoon
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
| | - Christopher D. McTiernan
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
| | - Erik J. Suuronen
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
| | - Thien-Fah Mah
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Emilio I. Alarcon
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Ontario, Canada
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Wang Y, Tan X, Xi C, Phillips KS. Removal of Staphylococcus aureus from skin using a combination antibiofilm approach. NPJ Biofilms Microbiomes 2018; 4:16. [PMID: 30155267 PMCID: PMC6079078 DOI: 10.1038/s41522-018-0060-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 05/14/2018] [Accepted: 05/23/2018] [Indexed: 12/13/2022] Open
Abstract
Staphylococcus aureus (S. aureus) including methicillin resistant S. aureus (MRSA) is one of the primary microorganisms responsible for surgical site infection (SSI). Since S. aureus contamination is known to originate from the skin, eradicating it on the skin surface at surgical sites is an important intervention to reduce the chance of SSIs. Here we developed and evaluated the efficacy of a combination probiotic/brush sonication strategy for skin preparation at surgical, injection and insertion sites in medicine. A 24 h biofilm on porcine skin explants was used as a worst-case scenario for the evaluation of preparation strategies. Conventional ethanol wipes achieved 0.8~2 log reduction in viable bacteria depending on how many times wiped (x4 or x6). Brush sonication or probiotic supernatant pre-treatment alone achieved a similar reduction as ethanol wipes (1.4 and 0.7~1.4 log reduction, respectively). Notably, combining sonication and probiotic pre-treatment achieved a 4 log reduction in viable bacteria. In addition, probiotic supernatant incubation times as short as 2 h achieved the full effect of this reduction in the combined strategy. These findings suggest the promising potential of combination-format skin preparation strategies that can be developed to more effectively penetrate cracks and folds in the skin to remove biofilms. Combining brush sonication with secretions from probiotic bacteria cleans skin before surgery more effectively than ethanol wipes. Researchers in the USA, led by K. Scott Phillips at the United States Food and Drug Administration, investigated removal of Staphylococcus aureus biofilm from pig skin as a “worst case” pre-surgical scenario. This bacterium is a major cause of serious and drug-resistant surgical site infections. Brush sonication or treatment with probiotic-derived solutions were individually approximately as effective as ethanol wipes, but in combination they proved substantially more effective. The treatment with the secretions surrounding probiotic bacterial cells requires exposure for several hours, but this could be readily achieved using a pre-surgery ointment. The sonication and probiotic combination could be developed into a highly effective pre-surgical procedure, penetrating cracks and folds in the skin to remove dangerous biofilms.
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Affiliation(s)
- Yi Wang
- 1United States Food and Drug Administration, Office of Medical Products and Tobacco, Center for Devices and Radiological Health, Office of Science and Engineering Laboratories, Division of Biology, Chemistry and Materials Science, 10903 New Hampshire Ave, Silver Spring, MD 20993 USA
| | - Xiaojuan Tan
- 2Department of Environmental Health Sciences, School of Public Health, University of Michigan, 6631 SPH Tower, 1415 Washington Heights, Ann Arbor, MI 48109 USA
| | - Chuanwu Xi
- 2Department of Environmental Health Sciences, School of Public Health, University of Michigan, 6631 SPH Tower, 1415 Washington Heights, Ann Arbor, MI 48109 USA
| | - K Scott Phillips
- 1United States Food and Drug Administration, Office of Medical Products and Tobacco, Center for Devices and Radiological Health, Office of Science and Engineering Laboratories, Division of Biology, Chemistry and Materials Science, 10903 New Hampshire Ave, Silver Spring, MD 20993 USA
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Novickij V, Švedienė J, Paškevičius A, Markovskaja S, Lastauskienė E, Zinkevičienė A, Girkontaitė I, Novickij J. Induction of Different Sensitization Patterns of MRSA to Antibiotics Using Electroporation. Molecules 2018; 23:molecules23071799. [PMID: 30037022 PMCID: PMC6100619 DOI: 10.3390/molecules23071799] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 01/04/2023] Open
Abstract
Treatment of bacteria-associated infections is complicated and antibiotic treatment alone is often inadequate to overcome biofilm infections. Physical methods allow overcoming this problem and propose solutions that are non-dependent on drug resistance. In this work, we investigated the feasibility of pulsed electric fields for sensitization of MRSA to common antibiotics. We analyzed the efficacy of inactivation of methicillin-resistant Staphylococcus aureus in 5–20 kV/cm electric field separately and in combination with gentamicin, doxycycline, ciprofloxacin, sulfamethoxazole, and vancomycin. Combined treatment allowed using up to 1000-fold smaller concentrations of antibiotics to induce the same inactivation of S. aureus.
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Affiliation(s)
- Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Naugarduko st. 41, 03227 Vilnius, Lithuania.
| | - Jurgita Švedienė
- Laboratory of Biodeterioration Research, Nature Research Centre, Akademijos st. 2, 08412 Vilnius, Lithuania.
| | - Algimantas Paškevičius
- Laboratory of Biodeterioration Research, Nature Research Centre, Akademijos st. 2, 08412 Vilnius, Lithuania.
- Laboratory of Microbiology of the Centre of Laboratory Medicine, Vilnius University Hospital Santariškių Clinics, Santariskiu g. 2, 08406 Vilnius, Lithuania.
| | - Svetlana Markovskaja
- Laboratory of Mycology, Nature Research Centre, Žaliųjų ežerų st. 49, 08406 Vilnius, Lithuania.
| | - Eglė Lastauskienė
- Department of Microbiology and Biotechnology, Vilnius University, Sauletekio al. 7, 10257 Vilnius, Lithuania.
| | - Auksė Zinkevičienė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Santariškių st. 5, 08406 Vilnius, Lithuania.
| | - Irutė Girkontaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Santariškių st. 5, 08406 Vilnius, Lithuania.
| | - Jurij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Naugarduko st. 41, 03227 Vilnius, Lithuania.
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Abstract
Microbial biofilms, which are elaborate and highly resistant microbial aggregates formed on surfaces or medical devices, cause two-thirds of infections and constitute a serious threat to public health. Immunocompromised patients, individuals who require implanted devices, artificial limbs, organ transplants, or external life support and those with major injuries or burns, are particularly prone to become infected. Antibiotics, the mainstay treatments of bacterial infections, have often proven ineffective in the fight against microbes when growing as biofilms, and to date, no antibiotic has been developed for use against biofilm infections. Antibiotic resistance is rising, but biofilm-mediated multidrug resistance transcends this in being adaptive and broad spectrum and dependent on the biofilm growth state of organisms. Therefore, the treatment of biofilms requires drug developers to start thinking outside the constricted "antibiotics" box and to find alternative ways to target biofilm infections. Here, we highlight recent approaches for combating biofilms focusing on the eradication of preformed biofilms, including electrochemical methods, promising antibiofilm compounds and the recent progress in drug delivery strategies to enhance the bioavailability and potency of antibiofilm agents.
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Affiliation(s)
- Heidi Wolfmeier
- Department of Microbiology and Immunology, Center for Microbial Diseases
and Immunity Research, University of British Columbia, Room 232, 2259
Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
| | - Daniel Pletzer
- Department of Microbiology and Immunology, Center for Microbial Diseases
and Immunity Research, University of British Columbia, Room 232, 2259
Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
| | - Sarah C. Mansour
- Department of Microbiology and Immunology, Center for Microbial Diseases
and Immunity Research, University of British Columbia, Room 232, 2259
Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
| | - Robert E. W. Hancock
- Department of Microbiology and Immunology, Center for Microbial Diseases
and Immunity Research, University of British Columbia, Room 232, 2259
Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
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Novickij V, Stanevičienė R, Vepštaitė-Monstavičė I, Gruškienė R, Krivorotova T, Sereikaitė J, Novickij J, Servienė E. Overcoming Antimicrobial Resistance in Bacteria Using Bioactive Magnetic Nanoparticles and Pulsed Electromagnetic Fields. Front Microbiol 2018; 8:2678. [PMID: 29375537 PMCID: PMC5767227 DOI: 10.3389/fmicb.2017.02678] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 12/22/2017] [Indexed: 11/21/2022] Open
Abstract
Nisin is a known bacteriocin, which exhibits a wide spectrum of antimicrobial activity, while commonly being inefficient against Gram-negative bacteria. In this work, we present a proof of concept of novel antimicrobial methodology using targeted magnetic nisin-loaded nano-carriers [iron oxide nanoparticles (NPs) (11-13 nm) capped with citric, ascorbic, and gallic acids], which are activated by high pulsed electric and electromagnetic fields allowing to overcome the nisin-resistance of bacteria. As a cell model the Gram-positive bacteria Bacillus subtilis and Gram-negative Escherichia coli were used. We have applied 10 and 30 kV cm-1 electric field pulses (100 μs × 8) separately and in combination with two pulsed magnetic field protocols: (1) high dB/dt 3.3 T × 50 and (2) 10 mT, 100 kHz, 2 min protocol to induce additional permeabilization and local magnetic hyperthermia. We have shown that the high dB/dt pulsed magnetic fields increase the antimicrobial efficiency of nisin NPs similar to electroporation or magnetic hyperthermia methods and a synergistic treatment is also possible. The results of our work are promising for the development of new methods for treatment of the drug-resistant foodborne pathogens to minimize the risks of invasive infections.
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Affiliation(s)
- Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Ramunė Stanevičienė
- Laboratory of Genetics, Institute of Botany, Nature Research Centre, Vilnius, Lithuania
| | | | - Rūta Gruškienė
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | | | - Jolanta Sereikaitė
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Jurij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Elena Servienė
- Laboratory of Genetics, Institute of Botany, Nature Research Centre, Vilnius, Lithuania
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
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Novickij V, Švedienė J, Paškevičius A, Markovskaja S, Girkontaitė I, Zinkevičienė A, Lastauskienė E, Novickij J. Pulsed electric field-assisted sensitization of multidrug-resistant Candida albicans to antifungal drugs. Future Microbiol 2017; 13:535-546. [PMID: 29227694 DOI: 10.2217/fmb-2017-0245] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM Determine the influence of pH on the inactivation efficiency of Candida albicans in pulsed electric fields (PEF) and evaluate the possibilities for sensitization of a drug-resistant strain to antifungal drugs. MATERIALS & METHODS The effects of PEF (2.5-25 kVcm-1) with fluconazole, terbinafine and naftifine were analyzed at a pH range of 3.0-9.0. Membrane permeabilization was determined by flow cytometry and propidium iodide. RESULTS PEF induced higher inactivation of C. albicans at low pH and increased sensitivity to terbinafine and naftifine to which the strain was initially resistant. Up to 5 log reduction in cell survival was achieved. CONCLUSION A proof of concept that electroporation can be used to sensitize drug-resistant microorganisms was presented, which is promising for treating biofilm-associated infections.
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Affiliation(s)
- Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Naugarduko St 41, 03227 Vilnius, Lithuania
| | - Jurgita Švedienė
- Laboratory of Biodeterioration Research, Nature Research Centre, Akademijos St 2, 08412 Vilnius, Lithuania
| | - Algimantas Paškevičius
- Laboratory of Biodeterioration Research, Nature Research Centre, Akademijos St 2, 08412 Vilnius, Lithuania.,Laboratory of Microbiology of the Centre of Laboratory Medicine, Vilnius University Hospital Santariškių Clinics, Santariškių St 2, 08661 Vilnius, Lithuania
| | - Svetlana Markovskaja
- Laboratory of Mycology, Nature Research Centre, Žaliųjų ežerų St 49, 08406 Vilnius, Lithuania
| | - Irutė Girkontaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Santariškių St 5, 08406 Vilnius, Lithuania
| | - Auksė Zinkevičienė
- State Research Institute Centre for Innovative Medicine, Department of Immunology, Santariškių St 5, 08406 Vilnius, Lithuania
| | - Eglė Lastauskienė
- Department of Microbiology & Biotechnology, Vilnius University, Sauletekio al. 7, 10257 Vilnius, Lithuania
| | - Jurij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Naugarduko St 41, 03227 Vilnius, Lithuania
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Coronado LM, Montealegre S, Chaverra Z, Mojica L, Espinosa C, Almanza A, Correa R, Stoute JA, Gittens RA, Spadafora C. Blood Stage Plasmodium falciparum Exhibits Biological Responses to Direct Current Electric Fields. PLoS One 2016; 11:e0161207. [PMID: 27537497 PMCID: PMC4990222 DOI: 10.1371/journal.pone.0161207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 08/01/2016] [Indexed: 11/18/2022] Open
Abstract
The development of resistance to insecticides by the vector of malaria and the increasingly faster appearance of resistance to antimalarial drugs by the parasite can dangerously hamper efforts to control and eradicate the disease. Alternative ways to treat this disease are urgently needed. Here we evaluate the in vitro effect of direct current (DC) capacitive coupling electrical stimulation on the biology and viability of Plasmodium falciparum. We designed a system that exposes infected erythrocytes to different capacitively coupled electric fields in order to evaluate their effect on P. falciparum. The effect on growth of the parasite, replication of DNA, mitochondrial membrane potential and level of reactive oxygen species after exposure to electric fields demonstrate that the parasite is biologically able to respond to stimuli from DC electric fields involving calcium signaling pathways.
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Affiliation(s)
- Lorena M. Coronado
- Center of Cellular and Molecular Biology of Diseases (CBCMe), Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, 522 510, A.P., India
| | - Stephania Montealegre
- School of Biotechnology, Facultad de Ciencias de la Salud “William C. Gorgas”, Universidad Latina, Panama, Republic of Panama
| | - Zumara Chaverra
- School of Biotechnology, Facultad de Ciencias de la Salud “William C. Gorgas”, Universidad Latina, Panama, Republic of Panama
| | - Luis Mojica
- National Center for Metrology of Panama (CENAMEP AIP), City of Knowledge, Panama, Republic of Panama
| | - Carlos Espinosa
- National Center for Metrology of Panama (CENAMEP AIP), City of Knowledge, Panama, Republic of Panama
| | - Alejandro Almanza
- Center of Cellular and Molecular Biology of Diseases (CBCMe), Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
| | - Ricardo Correa
- Center of Cellular and Molecular Biology of Diseases (CBCMe), Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
- Department of Biotechnology, Acharya Nagarjuna University, Guntur, 522 510, A.P., India
| | - José A. Stoute
- Department of Medicine, Division of Infectious Diseases and Epidemiology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Rolando A. Gittens
- Center for Biodiversity & Drug Discovery (CBDD), INDICASAT AIP, City of Knowledge, Panama, Republic of Panama
| | - Carmenza Spadafora
- Center of Cellular and Molecular Biology of Diseases (CBCMe), Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), City of Knowledge, Panama, Republic of Panama
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Zabielska J, Tyfa A, Kunicka-Styczyńska A. Methods for eradication of the biofilms formed by opportunistic pathogens using novel techniques – A review. ACTA ACUST UNITED AC 2016. [DOI: 10.1515/fobio-2016-0003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The inconvenient environmental conditions force microorganisms to colonize either abiotic surfaces or animal and plant tissues and, therefore, form more resistant structures – biofilms. The phenomenon of microbial adherence, opportunistic pathogens in particular, is of a great concern. Colonization of medical devices and biofilm formation on their surface, may lead to severe infections mainly in humans with impaired immune system. Although, current research consider various methods for prevention of microbial biofilms formation, still, once a biofilm is formed, its elimination is almost impossible. This study focuses on the overview of novel methods applied for eradication of mature opportunistic pathogens' biofilms. Among various techniques the following: cold plasma, electric field, ultrasounds, ozonated water treatment, phagotherapy, matrix targeting enzymes, bacteriocins, synthetic chemicals and natural origin compounds used for biofilm matrix disruption were briefly described.
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