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Coenye T, Ahonen M, Anderson S, Cámara M, Chundi P, Fields M, Foidl I, Gnimpieba EZ, Griffin K, Hinks J, Loka AR, Lushbough C, MacPhee C, Nater N, Raval R, Slater-Jefferies J, Teo P, Wilks S, Yung M, Webb JS. Global challenges and microbial biofilms: Identification of priority questions in biofilm research, innovation and policy. Biofilm 2024; 8:100210. [PMID: 39221168 PMCID: PMC11364012 DOI: 10.1016/j.bioflm.2024.100210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 07/01/2024] [Accepted: 07/02/2024] [Indexed: 09/04/2024] Open
Abstract
Priority question exercises are increasingly used to frame and set future research, innovation and development agendas. They can provide an important bridge between the discoveries, data and outputs generated by researchers, and the information required by policy makers and funders. Microbial biofilms present huge scientific, societal and economic opportunities and challenges. In order to identify key priorities that will help to advance the field, here we review questions from a pool submitted by the international biofilm research community and from practitioners working across industry, the environment and medicine. To avoid bias we used computational approaches to group questions and manage a voting and selection process. The outcome of the exercise is a set of 78 unique questions, categorized in six themes: (i) Biofilm control, disruption, prevention, management, treatment (13 questions); (ii) Resistance, persistence, tolerance, role of aggregation, immune interaction, relevance to infection (10 questions); (iii) Model systems, standards, regulatory, policy education, interdisciplinary approaches (15 questions); (iv) Polymicrobial, interactions, ecology, microbiome, phage (13 questions); (v) Clinical focus, chronic infection, detection, diagnostics (13 questions); and (vi) Matrix, lipids, capsule, metabolism, development, physiology, ecology, evolution environment, microbiome, community engineering (14 questions). The questions presented are intended to highlight opportunities, stimulate discussion and provide focus for researchers, funders and policy makers, informing future research, innovation and development strategy for biofilms and microbial communities.
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Affiliation(s)
- Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Belgium
- ESCMID Study Group on Biofilms (ESGB), Basel, Switzerland
| | - Merja Ahonen
- Satakunta University of Applied Sciences, Finland
| | - Skip Anderson
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Miguel Cámara
- National Biofilms Innovation Centre, University of Nottingham Biodiscovery Institute, School of Life Sciences, University of Nottingham, Nottingham, UK
| | | | - Matthew Fields
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Ines Foidl
- National Biofilms Innovation Centre, School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
| | | | - Kristen Griffin
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Jamie Hinks
- Nanyang Technological University, Singapore
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Singapore
| | | | | | - Cait MacPhee
- National Biofilms Innovation Centre, School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
| | - Natasha Nater
- National Biofilms Innovation Centre, School of Biological Sciences, University of Southampton, Southampton, UK
| | - Rasmita Raval
- National Biofilms Innovation Centre, Open Innovation Hub for Antimicrobial Surfaces, Department of Chemistry, University of Liverpool, Liverpool, UK
| | - Jo Slater-Jefferies
- National Biofilms Innovation Centre, School of Biological Sciences, University of Southampton, Southampton, UK
| | - Pauline Teo
- Nanyang Technological University, Singapore
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Singapore
| | - Sandra Wilks
- National Biofilms Innovation Centre, School of Biological Sciences, University of Southampton, Southampton, UK
| | - Maria Yung
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Singapore
| | | | - Jeremy S. Webb
- National Biofilms Innovation Centre, School of Biological Sciences, University of Southampton, Southampton, UK
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Saulnier J, Jose C, Lagarde F. Electrochemical techniques for label-free and early detection of growing microbial cells and biofilms. Bioelectrochemistry 2024; 155:108587. [PMID: 37839250 DOI: 10.1016/j.bioelechem.2023.108587] [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: 07/07/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/17/2023]
Abstract
Over the past decades, the misuse or abuse of antimicrobial agents to prevent and/or control infections has led to increased resistance of microbes to treatments, and antimicrobial resistance is now a subject of major global concern. In some cases, microbes possess the capacity to attach to biotic or abiotic surfaces, and to produce a protective polymeric matrix, forming biofilms of higher resistance and virulence compared to planktonic forms. To avoid further excessive and inappropriate use of antimicrobials, and to propose new effective treatments, it is very important to detect planktonic microbes and microbial biofilms in their early growth stage and at the point of need. In this review, we provide an overview of currently available electrochemical techniques, in particular impedimetric and voltamperometric methods, highlighting recent advances in the field and illustrating with examples in antibiotic susceptibility testing and microbial biofilm monitoring.
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Affiliation(s)
- Joelle Saulnier
- Universite Claude Bernard Lyon 1, Institute of Analytical Sciences, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Catherine Jose
- Universite Claude Bernard Lyon 1, Institute of Analytical Sciences, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Florence Lagarde
- Universite Claude Bernard Lyon 1, Institute of Analytical Sciences, CNRS, 5 rue de la Doua, 69100 Villeurbanne, France.
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3
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Bouhrour N, van der Reijden TJK, Voet MM, Schonkeren-Ravensbergen B, Cordfunke RA, Drijfhout JW, Bendali F, Nibbering PH. Novel Antibacterial Agents SAAP-148 and Halicin Combat Gram-Negative Bacteria Colonizing Catheters. Antibiotics (Basel) 2023; 12:1743. [PMID: 38136778 PMCID: PMC10741160 DOI: 10.3390/antibiotics12121743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
The antibiotic management of catheter-related infections (CRIs) often fails owing to the emergence of antimicrobial-resistant strains and/or biofilm/persister apparitions. Thus, we investigated the efficacy of two novel antimicrobial agents, i.e., the synthetic peptide SAAP-148 and the novel antibiotic halicin, against Gram-negative bacteria (GNB) colonizing catheters. The antibacterial, anti-biofilm, and anti-persister activities of both agents were evaluated against Acinetobacter baumannii, Escherichia coli, and Klebsiella pneumoniae strains. The enrolled strains were isolated from catheters and selected based on their resistance to at least three antibiotic classes and biofilm formation potential. Furthermore, the hemolysis and endotoxin neutralization abilities of these agents were explored. The bactericidal activity of both agents was reduced in urine and plasma as compared to buffered saline. In a dose-dependent manner, SAAP-148 and halicin reduced bacterial counts in 24 h preformed biofilms on silicone elastomer discs and eliminated persisters originating from antibiotic-exposed mature 7-day biofilms, with halicin being less effective than SAAP-148. Importantly, SAAP-148 and halicin acted synergistically on E. coli and K. pneumoniae biofilms but not on A. baumannii biofilms. The peptide, but not halicin, decreased the production of IL-12p40 upon exposure to UV-killed bacteria. This preliminary study showed that SAAP-148 and halicin alone/in combination are promising candidates to fight GNB colonizing catheters.
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Affiliation(s)
- Nesrine Bouhrour
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Tanny J. K. van der Reijden
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Michella M. Voet
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Bep Schonkeren-Ravensbergen
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Robert A. Cordfunke
- Department of Immunology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (R.A.C.); (J.W.D.)
| | - Jan Wouter Drijfhout
- Department of Immunology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (R.A.C.); (J.W.D.)
| | - Farida Bendali
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria
| | - Peter H. Nibbering
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
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Cleaver L, Garnett JA. How to study biofilms: technological advancements in clinical biofilm research. Front Cell Infect Microbiol 2023; 13:1335389. [PMID: 38156318 PMCID: PMC10753778 DOI: 10.3389/fcimb.2023.1335389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 11/30/2023] [Indexed: 12/30/2023] Open
Abstract
Biofilm formation is an important survival strategy commonly used by bacteria and fungi, which are embedded in a protective extracellular matrix of organic polymers. They are ubiquitous in nature, including humans and other animals, and they can be surface- and non-surface-associated, making them capable of growing in and on many different parts of the body. Biofilms are also complex, forming polymicrobial communities that are difficult to eradicate due to their unique growth dynamics, and clinical infections associated with biofilms are a huge burden in the healthcare setting, as they are often difficult to diagnose and to treat. Our understanding of biofilm formation and development is a fast-paced and important research focus. This review aims to describe the advancements in clinical biofilm research, including both in vitro and in vivo biofilm models, imaging techniques and techniques to analyse the biological functions of the biofilm.
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Affiliation(s)
- Leanne Cleaver
- Centre for Host-Microbiome Interactions, Faculty of Dental, Oral & Craniofacial Sciences, King’s College London, London, United Kingdom
| | - James A. Garnett
- Centre for Host-Microbiome Interactions, Faculty of Dental, Oral & Craniofacial Sciences, King’s College London, London, United Kingdom
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Teuber A, Caniglia G, Barth H, Kranz C, Mizaikoff B. Thin-Film Waveguide Laser Spectroscopy: A Novel Platform for Bacterial Analysis. Anal Chem 2023; 95:16600-16608. [PMID: 37883708 DOI: 10.1021/acs.analchem.3c02782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Bacterial sensing based on quantum cascade laser spectroscopy coupled with diamond or gallium arsenide thin-film waveguides is a novel analytical tool for gaining high-resolution infrared spectroscopic information of planktonic and sessile bacteria, as shown in the present study for Escherichia coli. During observation periods of up to 24 h, diamond and gallium arsenide thin-film waveguide laser spectroscopy was compared to information obtained via conventional Fourier transform infrared spectroscopy. The proliferation behavior of E. coli at those surfaces was complementarily investigated using atomic force microscopy and scanning electron microscopy.
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Affiliation(s)
- Andrea Teuber
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany
| | - Giada Caniglia
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany
| | - Holger Barth
- Institute of Experimental and Clinical Pharmacology and Toxicology and Pharmacology of Natural Products, University of Ulm, 89081 Ulm, Germany
| | - Christine Kranz
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany
| | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany
- Hahn-Schickard, 89077 Ulm, Germany
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Zhang Y, Young P, Traini D, Li M, Ong HX, Cheng S. Challenges and current advances in in vitro biofilm characterization. Biotechnol J 2023; 18:e2300074. [PMID: 37477959 DOI: 10.1002/biot.202300074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/22/2023]
Abstract
Biofilms are structured communities of bacterial cells encased in a self-produced polymeric matrix, which develop over time and exhibit temporal responses to stimuli from internal biological processes or external environmental changes. They can be detrimental, threatening public health and causing economic loss, while they also play beneficial roles in ecosystem health, biotechnology processes, and industrial settings. Biofilms express extreme heterogeneity in their physical properties and structural composition, resulting in critical challenges in understanding them comprehensively. The lack of detailed knowledge of biofilms and their phenotypes has deterred significant progress in developing strategies to control their negative impacts and take advantage of their beneficial applications. A range of in vitro models and characterization tools have been developed and used to study biofilm growth and, specifically, to investigate the impact of environmental and growth factors on their development. This review article discusses the existing knowledge of biofilm properties and explains how external factors, such as flow condition, surface, interface, and host factor, may impact biofilm growth. The limitations of current tools, techniques, and in vitro models that are currently used for biofilms are also presented.
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Affiliation(s)
- Ye Zhang
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Paul Young
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
- Department of Marketing, Macquarie Business School, Macquarie University, Sydney, New South Wales, Australia
| | - Daniela Traini
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Ming Li
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
| | - Hui Xin Ong
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Shaokoon Cheng
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
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7
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Liao Y, Fatehi P, Liao B. Microalgae cell adhesions on hydrophobic membrane substrates using quartz crystal microbalance with dissipation. Colloids Surf B Biointerfaces 2023; 230:113514. [PMID: 37598610 DOI: 10.1016/j.colsurfb.2023.113514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 08/22/2023]
Abstract
Microalgal cell adhesion and biofilm formation are affected by interactions between microalgae strains and membrane materials. Variations of surface properties of microalgae and membrane materials are expected to affect cell-membranes and cell-cell interactions and thus initial microalgal cell adhesion and biofilm formation rates. Hence, it should be possible to identify the dominant mechanisms controlling microalgal cell adhesion and biofilm formation. The effects of surface properties of three different microalgal strains and three different types of membrane materials on microalgal cell adhesion and biofilm formation were systematically investigated in real time by monitoring changes in the oscillation frequency and dissipation of the quartz crystal resonator (QCM-D). The results revealed that in general a higher surface free energy, more negative zeta potential, and higher surface roughness of membrane materials positively correlated with a larger quantity of microalgae cell deposition, while a more hydrophilic microalgae with a larger negative zeta potential preferred to attach to a more hydrophobic membrane material. The adhered microalgal layers exhibited viscoelastic properties. The relative importance of these mechanisms in controlling microalgae cell attachment and biofilm formation might vary, depending on the properties of specific microalgae species and hydrophobic membrane materials used.
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Affiliation(s)
- Yichen Liao
- Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B5E1, Canada
| | - Pedram Fatehi
- Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B5E1, Canada
| | - Baoqiang Liao
- Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B5E1, Canada.
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8
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Ardila CM, Zuluaga-Gómez M, Vivares-Builes AM. Applications of Lab on a Chip in Antimicrobial Susceptibility of Staphylococcus aureus: A Systematic Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1719. [PMID: 37893437 PMCID: PMC10608121 DOI: 10.3390/medicina59101719] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/29/2023]
Abstract
Background and Objectives: Staphylococcus aureus is a prevalent bacterium capable of inducing various infections, including skin and soft tissue infections, bloodstream infections, pneumonia, and surgical site infections. The emergence of antimicrobial resistance in S. aureus, particularly methicillin-resistant S. aureus, has raised substantial concerns within global healthcare settings. Prior to antibiotic prescription, the ideal approach is antimicrobial susceptibility testing (AST); however, this is frequently perceived as excessively complex and time-intensive. Lab-on-a-chip (LOC) technology holds promise in addressing these challenges and advancing fundamental microbiological research while also aiding in the development of therapeutic strategies. This systematic review aims to evaluate the potential utility of LOC for AST of S. aureus. Materials and Methods: This study adhered to the PRISMA guidelines. Various databases, including SCOPUS, PubMed/MEDLINE, SCIELO, and LILACS, in addition to gray literature sources, were employed in the review process. Results: Sixteen studies were included in this systematic review. All these studies detailed the effectiveness, rapidity, and predictability of LOC systems for assessing S. aureus susceptibility to various antibiotics. When comparing the LOC approach to traditional manual methods, it was evident that LOC requires a minimal quantity of reagents. Furthermore, most studies reported that the entire LOC procedure took 10 min to 7 h, with results being equally accurate as those obtained through traditional AST protocols. Conclusions: The potential application of LOC for AST of S. aureus is emphasized by its ability to provide rapid access to minimum inhibitory concentration data, which can substantially aid in selecting the most suitable antibiotics and dosages for treating challenging infections caused by this microorganism. Moreover, the rapid AST facilitated by LOC holds promise for enhancing the appropriateness and efficacy of therapy in clinical settings.
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Affiliation(s)
- Carlos M. Ardila
- Basic Studies Department, School of Dentistry, Universidad de Antioquia UdeA, Medellín 050010, Colombia
| | - Mateo Zuluaga-Gómez
- Emergency Department, Universidad Pontificia Bolivariana, Medellín 050010, Colombia;
- Hospital San Vicente Fundación, Rionegro 054047, Colombia
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Ruiz-Romero RA, Vargas-Bello-Pérez E. Non-aureus staphylococci and mammaliicocci as a cause of mastitis in domestic ruminants: current knowledge, advances, biomedical applications, and future perspectives - a systematic review. Vet Res Commun 2023; 47:1067-1084. [PMID: 36964436 PMCID: PMC10038778 DOI: 10.1007/s11259-023-10090-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/24/2023] [Indexed: 03/26/2023]
Abstract
Non-aureus staphylococci and mammaliicocci (NASM) are one of the most common causes of subclinical mastitis in dairy animals and the extent of damage by intramammary infections (IMI) caused by NASM is still under debate. The different effects of NASM on the mammary gland may be associated with differences between bacterial species. NASM are normal and abundant colonizers of humans and animals and become pathogenic only in certain situations. The veterinary interest in NASM has been intense for the last 25 years, due to the strongly increasing rate of opportunistic infections. Therefore, the objective of this review is to provide a general background of the NASM as a cause of mastitis and the most recent advances that exist to prevent and fight the biofilm formation of this group of bacteria, introduce new biomedical applications that could be used in dairy herds to reduce the risk of chronic and recurrent infections, potentially responsible for economic losses due to reduced milk production and quality. Effective treatment of biofilm infection requires a dual approach through a combination of antibiofilm and antimicrobial agents. Even though research on the development of biofilms is mainly focused on human medicine, this technology must be developed at the same time in veterinary medicine, especially in the dairy industry where IMI are extremely common.
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Affiliation(s)
- Rocio Angélica Ruiz-Romero
- Departamento de Medicina y Zootecnia de Rumiantes, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Av. Universidad 3000, Ciudad de México, 04510, México.
| | - Einar Vargas-Bello-Pérez
- School of Agriculture, Policy and Development, University of Reading, New Agriculture Building, Earley Gate, Whiteknights Road, PO Box 237, Reading, Berkshire, RG6 6EU, UK.
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Ladewig L, Gloy L, Langfeldt D, Pinnow N, Weiland-Bräuer N, Schmitz RA. Antimicrobial Peptides Originating from Expression Libraries of Aurelia aurita and Mnemiopsis leidyi Prevent Biofilm Formation of Opportunistic Pathogens. Microorganisms 2023; 11:2184. [PMID: 37764028 PMCID: PMC10537229 DOI: 10.3390/microorganisms11092184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/17/2023] [Accepted: 08/26/2023] [Indexed: 09/29/2023] Open
Abstract
The demand for novel antimicrobial compounds is rapidly growing due to the rising appearance of antibiotic resistance in bacteria; accordingly, alternative approaches are urgently needed. Antimicrobial peptides (AMPs) are promising, since they are a naturally occurring part of the innate immune system and display remarkable broad-spectrum activity and high selectivity against various microbes. Marine invertebrates are a primary resource of natural AMPs. Consequently, cDNA expression (EST) libraries from the Cnidarian moon jellyfish Aurelia aurita and the Ctenophore comb jelly Mnemiopsis leidyi were constructed in Escherichia coli. Cell-free size-fractionated cell extracts (<3 kDa) of the two libraries (each with 29,952 clones) were consecutively screened for peptides preventing the biofilm formation of opportunistic pathogens using the crystal violet assay. The 3 kDa fraction of ten individual clones demonstrated promising biofilm-preventing activities against Klebsiella oxytoca and Staphylococcus epidermidis. Sequencing the respective activity-conferring inserts allowed for the identification of small ORFs encoding peptides (10-22 aa), which were subsequently chemically synthesized to validate their inhibitory potential. Although the peptides are likely artificial products from a random translation of EST inserts, the biofilm-preventing effects against K. oxytoca, Pseudomonas aeruginosa, S. epidermidis, and S. aureus were verified for five synthetic peptides in a concentration-dependent manner, with peptide BiP_Aa_5 showing the strongest effects. The impact of BiP_Aa_2, BiP_Aa_5, and BiP_Aa_6 on the dynamic biofilm formation of K. oxytoca was further validated in microfluidic flow cells, demonstrating a significant reduction in biofilm thickness and volume by BiP_Aa_2 and BiP_Aa_5. Overall, the structural characteristics of the marine invertebrate-derived AMPs, their physicochemical properties, and their promising antibiofilm effects highlight them as attractive candidates for discovering new antimicrobials.
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Affiliation(s)
- Lisa Ladewig
- General Microbiology, Kiel University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Leon Gloy
- General Microbiology, Kiel University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Daniela Langfeldt
- General Microbiology, Kiel University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
- Institute of Clinical Molecular Biology (IKMB), Kiel University, Am Botanischen Garten 11, 24118 Kiel, Germany
| | - Nicole Pinnow
- General Microbiology, Kiel University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Nancy Weiland-Bräuer
- General Microbiology, Kiel University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Ruth A. Schmitz
- General Microbiology, Kiel University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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11
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Ameer S, Ibrahim H, Yaseen MU, Kulsoom F, Cinti S, Sher M. Electrochemical Impedance Spectroscopy-Based Sensing of Biofilms: A Comprehensive Review. BIOSENSORS 2023; 13:777. [PMID: 37622863 PMCID: PMC10452506 DOI: 10.3390/bios13080777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/26/2023] [Accepted: 07/29/2023] [Indexed: 08/26/2023]
Abstract
Biofilms are complex communities of microorganisms that can form on various surfaces, including medical devices, industrial equipment, and natural environments. The presence of biofilms can lead to a range of problems, including infections, reduced efficiency and failure of equipment, biofouling or spoilage, and environmental damage. As a result, there is a growing need for tools to measure and monitor levels of biofilms in various biomedical, pharmaceutical, and food processing settings. In recent years, electrochemical impedance sensing has emerged as a promising approach for real-time, non-destructive, and rapid monitoring of biofilms. This article sheds light on electrochemical sensing for measuring biofilms, including its high sensitivity, non-destructive nature, versatility, low cost, and real-time monitoring capabilities. We also discussed some electrochemical sensing applications for studying biofilms in medical, environmental, and industrial settings. This article also presents future perspectives for research that would lead to the creation of reliable, quick, easy-to-use biosensors mounted on unmanned aerial vehicles (UAVs), and unmanned ground vehicles (UGVs), utilizing artificial intelligence-based terminologies to detect biofilms.
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Affiliation(s)
- Sikander Ameer
- Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD 57007, USA
| | - Hussam Ibrahim
- Department of Electrical & Computer Engineering, Iowa State University, Ames, IA 50011, USA
| | - Muhammad Usama Yaseen
- Department of Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, OK 74078, USA
| | - Fnu Kulsoom
- Department of Zoology, Abbottabad University of Science and Technology, Havelian 22500, Pakistan
| | - Stefano Cinti
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, 80131 Naples, Italy
- BAT Center-Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, University of Napoli “Federico II”, 80055 Naples, Italy
| | - Mazhar Sher
- Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD 57007, USA
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Alonso VPP, Lemos JG, Nascimento MDSD. Yeast biofilms on abiotic surfaces: Adhesion factors and control methods. Int J Food Microbiol 2023; 400:110265. [PMID: 37267839 DOI: 10.1016/j.ijfoodmicro.2023.110265] [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: 03/06/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 06/04/2023]
Abstract
Biofilms are highly resistant to antimicrobials and are a common problem in many industries, including pharmaceutical, food and beverage. Yeast biofilms can be formed by various yeast species, including Candida albicans, Saccharomyces cerevisiae, and Cryptococcus neoformans. Yeast biofilm formation is a complex process that involves several stages, including reversible adhesion, followed by irreversible adhesion, colonization, exopolysaccharide matrix formation, maturation and dispersion. Intercellular communication in yeast biofilms (quorum-sensing mechanism), environmental factors (pH, temperature, composition of the culture medium), and physicochemical factors (hydrophobicity, Lifshitz-van der Waals and Lewis acid-base properties, and electrostatic interactions) are essential to the adhesion process. Studies on the adhesion of yeast to abiotic surfaces such as stainless steel, wood, plastic polymers, and glass are still scarce, representing a gap in the field. The biofilm control formation can be a challenging task for food industry. However, some strategies can help to reduce biofilm formation, such as good hygiene practices, including regular cleaning and disinfection of surfaces. The use of antimicrobials and alternative methods to remove the yeast biofilms may also be helpful to ensure food safety. Furthermore, physical control measures such as biosensors and advanced identification techniques are promising for yeast biofilms control. However, there is a gap in understanding why some yeast strains are more tolerant or resistant to sanitization methods. A better understanding of tolerance and resistance mechanisms can help researchers and industry professionals to develop more effective and targeted sanitization strategies to prevent bacterial contamination and ensure product quality. This review aimed to identify the most important information about yeast biofilms in the food industry, followed by the removal of these biofilms by antimicrobial agents. In addition, the review summarizes the alternative sanitizing methods and future perspectives for controlling yeast biofilm formation by biosensors.
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Affiliation(s)
| | - Jéssica Gonçalves Lemos
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, Rua Monteiro Lobato n° 80, Campinas, São Paulo 13083-862, Brazil
| | - Maristela da Silva do Nascimento
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, Rua Monteiro Lobato n° 80, Campinas, São Paulo 13083-862, Brazil.
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13
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Bonyadi F, Kavruk M, Ucak S, Cetin B, Bayramoglu G, Dursun AD, Arica Y, Ozalp VC. Real-Time Biosensing Bacteria and Virus with Quartz Crystal Microbalance: Recent Advances, Opportunities, and Challenges. Crit Rev Anal Chem 2023:1-12. [PMID: 37191651 DOI: 10.1080/10408347.2023.2211164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Continuous monitoring of pathogens finds applications in environmental, medical, and food industry settings. Quartz crystal microbalance (QCM) is one of the promising methods for real-time detection of bacteria and viruses. QCM is a technology that utilizes piezoelectric principles to measure mass and is commonly used in detecting the mass of chemicals adhering to a surface. Due to its high sensitivity and rapid detection times, QCM biosensors have attracted considerable attention as a potential method for detecting infections early and tracking the course of diseases, making it a promising tool for global public health professionals in the fight against infectious diseases. This review first provides an overview of the QCM biosensing method, including its principle of operation, various recognition elements used in biosensor creation, and its limitations and then summarizes notable examples of QCM biosensors for pathogens, focusing on microfluidic magnetic separation techniques as a promising tool in the pretreatment of samples. The review explores the use of QCM sensors in detecting pathogens in various samples, such as food, wastewater, and biological samples. The review also discusses the use of magnetic nanoparticles for sample preparation in QCM biosensors and their integration into microfluidic devices for automated detection of pathogens and highlights the importance of accurate and sensitive detection methods for early diagnosis of infections and the need for point-of-care approaches to simplify and reduce the cost of operation.
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Affiliation(s)
- Farzaneh Bonyadi
- Department of Histology and Embryology, Faculty of Medicine, Baskent University, Ankara, Turkey
| | - Murat Kavruk
- Department of Medical Biology, School of Medicine, Istanbul Aydin University, Istanbul, Turkey
| | - Samet Ucak
- Department of Medical Biology, School of Medicine, Istanbul Aydin University, Istanbul, Turkey
| | - Barbaros Cetin
- Department of Mechanical Engineering, Bilkent University, Ankara, Turkey
| | | | - Ali D Dursun
- Department of Physiology, School of Medicine, Atilim University, Ankara, Turkey
| | - Yakup Arica
- Department of Chemistry, Gazi University, Ankara, Turkey
| | - Veli C Ozalp
- Department of Histology and Embryology, Faculty of Medicine, Baskent University, Ankara, Turkey
- Department of Medical Biology, School of Medicine, Atilim University, 06830, Ankara, Turkey
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14
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Zhang Y, Gholizadeh H, Young P, Traini D, Li M, Ong HX, Cheng S. Real-time in-situ electrochemical monitoring of Pseudomonas aeruginosa biofilms grown on air-liquid interface and its antibiotic susceptibility using a novel dual-chamber microfluidic device. Biotechnol Bioeng 2023; 120:702-714. [PMID: 36408870 DOI: 10.1002/bit.28288] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/22/2022]
Abstract
Biofilms are communities of bacterial cells encased in a self-produced polymeric matrix that exhibit high tolerance toward environmental stress. Despite the plethora of research on biofilms, most P. aeruginosa biofilm models are cultured on a solid-liquid interface, and the longitudinal growth characteristics of P. aeruginosa biofilm are unclear. This study demonstrates the real-time and noninvasive monitoring of biofilm growth using a novel dual-chamber microfluidic device integrated with electrochemical detection capabilities to monitor pyocyanin (PYO). The growth of P. aeruginosa biofilms on the air-liquid interface (ALI) was monitored over 48 h, and its antibiotic susceptibility to 6 h exposure of 50, 400, and 1600 µg/ml of ciprofloxacin solutions was analyzed. The biofilm was treated directly on its surface and indirectly from the substratum by delivering the CIP solution to the top or bottom chamber of the microfluidic device. Results showed that P. aeruginosa biofilm developed on ALI produces PYO continuously, with the PYO production rate varying longitudinally and peak production observed between 24 and 30 h. In addition, this current study shows that the amount of PYO produced by the ALI biofilm is proportional to its viable cell numbers, which has not been previously demonstrated. Biofilm treated with ciprofloxacin solution above 400 µg/ml showed significant PYO reduction, with biofilms being killed more effectively when treatment was applied to their surfaces. The electrochemical measurement results have been verified with colony-forming unit count results, and the strong correlation between the PYO electrical signal and the viable cell number highlights the usefulness of this approach for fast and low-cost ALI biofilm study and antimicrobial tests.
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Affiliation(s)
- Ye Zhang
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia.,Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Hanieh Gholizadeh
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Paul Young
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Department of Marketing, Macquarie Business School, Macquarie University, Sydney, New South Wales, Australia
| | - Daniela Traini
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Ming Li
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
| | - Hui Xin Ong
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Shaokoon Cheng
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales, Australia
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15
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Ramos G, Toulouze C, Rima M, Liot O, Duru P, Davit Y. Ultraviolet control of bacterial biofilms in microfluidic chips. BIOMICROFLUIDICS 2023; 17:024107. [PMID: 37124629 PMCID: PMC10132849 DOI: 10.1063/5.0135722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 04/04/2023] [Indexed: 05/03/2023]
Abstract
Polydimethylsiloxane (PDMS) microfluidic systems have been instrumental in better understanding couplings between physical mechanisms and bacterial biofilm processes, such as hydrodynamic effects. However, precise control of the growth conditions, for example, the initial distribution of cells on the substrate or the boundary conditions in a flow system, has remained challenging. Furthermore, undesired bacterial colonization in crucial parts of the systems, in particular, in mixing zones or tubing, is an important factor that strongly limits the duration of the experiments and, therefore, impedes our ability to study the biophysics of biofilm evolving over long periods of time, as found in the environment, in engineering, or in medicine. Here, we develop a new approach that uses ultraviolet-C (UV-C) light-emitting diodes (LEDs) to confine bacterial development to specific zones of interest in the flow channels. The LEDs are integrated into a 3D printed light guide that is positioned upon the chip and used to irradiate germicidal UV-C directly through the PDMS. We first demonstrate that this system is successful in controlling undesired growth of Pseudomonas aeruginosa biofilm in inlet and outlet mixing zones during 48 h. We further illustrate how this can be used to define the initial distribution of bacteria to perturb already formed biofilms during an experiment and to control colonization for seven days-and possibly longer periods of time-therefore opening the way toward long-term biofilm experiments in microfluidic devices. Our approach is easily generalizable to existing devices at low cost and may, thus, become a standard in biofilm experiments in PDMS microfluidics.
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Affiliation(s)
- Gabriel Ramos
- Institut de Mécanique des Fluides (IMFT), CNRS and Université de Toulouse, 31400 Toulouse, France
| | - Clara Toulouze
- Institut de Mécanique des Fluides (IMFT), CNRS and Université de Toulouse, 31400 Toulouse, France
| | - Maya Rima
- Laboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France
| | - Olivier Liot
- Institut de Mécanique des Fluides (IMFT), CNRS and Université de Toulouse, 31400 Toulouse, France
| | - Paul Duru
- Institut de Mécanique des Fluides (IMFT), CNRS and Université de Toulouse, 31400 Toulouse, France
| | - Yohan Davit
- Institut de Mécanique des Fluides (IMFT), CNRS and Université de Toulouse, 31400 Toulouse, France
- Author to whom correspondence should be addressed:
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16
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McGlennen M, Dieser M, Foreman CM, Warnat S. Monitoring biofilm growth and dispersal in real-time with impedance biosensors. J Ind Microbiol Biotechnol 2023; 50:kuad022. [PMID: 37653441 PMCID: PMC10485796 DOI: 10.1093/jimb/kuad022] [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: 05/19/2023] [Accepted: 08/22/2023] [Indexed: 09/02/2023]
Abstract
Microbial biofilm contamination is a widespread problem that requires precise and prompt detection techniques to effectively control its growth. Microfabricated electrochemical impedance spectroscopy (EIS) biosensors offer promise as a tool for early biofilm detection and monitoring of elimination. This study utilized a custom flow cell system with integrated sensors to make real-time impedance measurements of biofilm growth under flow conditions, which were correlated with confocal laser scanning microscopy (CLSM) imaging. Biofilm growth on EIS biosensors in basic aqueous growth media (tryptic soy broth, TSB) and an oil-water emulsion (metalworking fluid, MWF) attenuated in a sigmoidal decay pattern, which lead to an ∼22-25% decrease in impedance after 24 Hrs. Subsequent treatment of established biofilms increased the impedance by ∼14% and ∼41% in TSB and MWF, respectively. In the presence of furanone C-30, a quorum-sensing inhibitor (QSI), impedance remained unchanged from the initial time point for 18 Hrs in TSB and 72 Hrs in MWF. Biofilm changes enumerated from CLSM imaging corroborated impedance measurements, with treatment significantly reducing biofilm. Overall, these results support the application of microfabricated EIS biosensors for evaluating the growth and dispersal of biofilm in situ and demonstrate potential for use in industrial settings. ONE-SENTENCE SUMMARY This study demonstrates the use of microfabricated electrochemical impedance spectroscopy (EIS) biosensors for real-time monitoring and treatment evaluation of biofilm growth, offering valuable insights for biofilm control in industrial settings.
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Affiliation(s)
- Matthew McGlennen
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA
- Mechanical and Industrial Engineering, Montana State University, Bozeman, MT 59717, USA
| | - Markus Dieser
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA
- Chemical and Biological Engineering, Montana State University, Bozeman, MT 59717, USA
| | - Christine M Foreman
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA
- Chemical and Biological Engineering, Montana State University, Bozeman, MT 59717, USA
| | - Stephan Warnat
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA
- Mechanical and Industrial Engineering, Montana State University, Bozeman, MT 59717, USA
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17
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Kumar S, Nguyen AT, Goswami S, Ferracane J, Koley D. Real-Time Monitoring of Biofilm Formation Using a Noninvasive Impedance-Based Method. SENSORS AND ACTUATORS. B, CHEMICAL 2023; 376:133034. [PMID: 36688105 PMCID: PMC9853957 DOI: 10.1016/j.snb.2022.133034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Biofilms are complex three-dimensional microbial communities that adhere to a variety of surfaces and interact with their surroundings. Because of the dynamic nature of biofilm formation, establishing a uniform technique for quantifying and monitoring biofilm volume, shape, and features in real-time is challenging. Herein, we describe a noninvasive electrochemical impedance approach for real-time monitoring of dental plaque-derived multispecies biofilm growth on a range of substrates. A working equation relating electrochemical impedance to live biofilm volume has been developed that is applicable to all three surfaces examined, including glass, dental filling resin, and Ca2+-releasing resin composites. Impedance changes of 2.5, 35, 50, and 65% correlated to biofilm volumes of 0.10 ± 0.01, 16.9 ± 2.2, 29.7 ± 2.3, and 38.6 ± 2.8 μm3/μm2, respectively. We discovered that glass, dental filling resin, and Ca2+-releasing dental composites required approximately 3.5, 4.5, and 6 days, respectively, to achieve a 50% change in impedance. The local pH change at the biofilm-substrate interfaces also monitored with potentiometry pH microsensor, and pH change varied according to biofilm volume. This impedance-based technique can be a useful analytical method for monitoring the growth of biofilms on a variety of substrates in real-time. Therefore, this technique may be beneficial for examining antibacterial properties of novel biomaterials.
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Affiliation(s)
- Sriram Kumar
- Department of Chemistry, Oregon State University, Corvallis, OR, USA
| | - Anh Tuan Nguyen
- Department of Chemistry, Oregon State University, Corvallis, OR, USA
| | - Subir Goswami
- Department of Chemistry, Oregon State University, Corvallis, OR, USA
| | - Jack Ferracane
- Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - Dipankar Koley
- Department of Chemistry, Oregon State University, Corvallis, OR, USA
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18
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Vélez Justiniano YA, Goeres DM, Sandvik EL, Kjellerup BV, Sysoeva TA, Harris JS, Warnat S, McGlennen M, Foreman CM, Yang J, Li W, Cassilly CD, Lott K, HerrNeckar LE. Mitigation and use of biofilms in space for the benefit of human space exploration. Biofilm 2023; 5:100102. [PMID: 36660363 PMCID: PMC9843197 DOI: 10.1016/j.bioflm.2022.100102] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 01/08/2023] Open
Abstract
Biofilms are self-organized communities of microorganisms that are encased in an extracellular polymeric matrix and often found attached to surfaces. Biofilms are widely present on Earth, often found in diverse and sometimes extreme environments. These microbial communities have been described as recalcitrant or protective when facing adversity and environmental exposures. On the International Space Station, biofilms were found in human-inhabited environments on a multitude of hardware surfaces. Moreover, studies have identified phenotypic and genetic changes in the microorganisms under microgravity conditions including changes in microbe surface colonization and pathogenicity traits. Lack of consistent research in microgravity-grown biofilms can lead to deficient understanding of altered microbial behavior in space. This could subsequently create problems in engineered systems or negatively impact human health on crewed spaceflights. It is especially relevant to long-term and remote space missions that will lack resupply and service. Conversely, biofilms are also known to benefit plant growth and are essential for human health (i.e., gut microbiome). Eventually, biofilms may be used to supply metabolic pathways that produce organic and inorganic components useful to sustaining life on celestial bodies beyond Earth. This article will explore what is currently known about biofilms in space and will identify gaps in the aerospace industry's knowledge that should be filled in order to mitigate or to leverage biofilms to the advantage of spaceflight.
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Affiliation(s)
- Yo-Ann Vélez Justiniano
- ECLSS Development Branch, NASA Marshall Space Flight Center, Huntsville, AL, USA,Corresponding author.
| | - Darla M. Goeres
- The Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA,Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA
| | | | - Birthe Veno Kjellerup
- Department of Civil and Environmental Engineering, University of Maryland, College Park, MD, USA
| | - Tatyana A. Sysoeva
- Department of Biological Sciences, The University of Alabama in Huntsville, Huntsville, AL, USA
| | - Jacob S. Harris
- Biomedical and Environmental Science Division, NASA Johnson Space Center, Houston, TX, USA
| | - Stephan Warnat
- The Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA,Mechanical Engineering, Montana State University, Bozeman, MT, USA
| | - Matthew McGlennen
- The Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA,Mechanical Engineering, Montana State University, Bozeman, MT, USA
| | - Christine M. Foreman
- The Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA,Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA
| | - Jiseon Yang
- Biodesign Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, AZ, USA
| | - Wenyan Li
- Laboratory Support Services and Operations (LASSO), NASA Kennedy Space Center, Cape Canaveral, FL, USA
| | | | - Katelynn Lott
- Department of Biological Sciences, The University of Alabama in Huntsville, Huntsville, AL, USA
| | - Lauren E. HerrNeckar
- ECLSS Development Branch, NASA Marshall Space Flight Center, Huntsville, AL, USA
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19
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Xu W, Ceylan Koydemir H. Non-invasive biomedical sensors for early detection and monitoring of bacterial biofilm growth at the point of care. LAB ON A CHIP 2022; 22:4758-4773. [PMID: 36398687 DOI: 10.1039/d2lc00776b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Bacterial infections have long been a serious global health issue. Biofilm formation complicates matters even more. The biofilm's extracellular polymeric substances (EPSs) matrix protects bacteria from the host's immune responses, yielding strong adhesion and drug resistance as the biofilm matures. Early bacterial biofilm detection and bacterial biofilm growth monitoring are crucial to treating biofilm-associated infections. Current detection methods are highly sensitive but not portable, are time-consuming, and require expensive equipment and complex operating procedures, limiting their use at the point of care. Therefore, there is an urgent need to develop affordable, on-body, and non-invasive biomedical sensors to continuously monitor and detect early biofilm growth at the point of care through personalized telemedicine. Herein, recent advances in developing non-invasive biomedical sensors for early detection and monitoring bacterial biofilm growth are comprehensively reviewed. First, biofilm's life cycle and its impact on the human body, such as biofilm-associated disease and infected medical devices, are introduced together with the challenges of biofilm treatment. Then, the current methods used in clinical and laboratory settings for biofilm detection and their challenges are discussed. Next, the current state of non-invasive sensors for direct and indirect detection of bacterial biofilms are summarized and highlighted with the detection parameters and their design details. Finally, commercially available products, challenges of current devices, and the further trend in biofilm detection sensors are discussed.
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Affiliation(s)
- Weiming Xu
- Department of Biomedical Engineering, Texas A&M University, College Station, 77843, Texas, USA.
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, 77843, TX, USA
| | - Hatice Ceylan Koydemir
- Department of Biomedical Engineering, Texas A&M University, College Station, 77843, Texas, USA.
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, 77843, TX, USA
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20
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Reiferth VM, Holtmann D, Müller D. Flexible biofilm monitoring device. Eng Life Sci 2022; 22:796-802. [PMID: 36514529 PMCID: PMC9731593 DOI: 10.1002/elsc.202100076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 05/18/2022] [Accepted: 06/29/2022] [Indexed: 12/16/2022] Open
Abstract
Biofilms and their analysis are increasingly attracting the attention of the scientific community due to the immense importance and impact of biofilms in various natural, technical and medical fields. For these purposes, an optimized and extended antibiofilm assay system based on the Calgary Biofilm Device (MBEC Assay® system) consisting of microtiter plate and PCR tubes was established. Its implementation was used to study the growth characteristics of the sessile phenotype of Pseudomonas fluorescens exposed to antimicrobial peptides. Inhibitory effects of an antimicrobial peptide on P. fluorescens biofilm formation could be determined at a concentration of 250 μg/ml (biofilm prevention concentration (BPC)) using the modified biofilm assay. Similarly, the biofilm bactericidal concentration (BBC) at 125 μg/ml and the minimum biofilm elimination concentration to remove 90% of the total biofilm mass (MBEC90) were measured at a concentration range of 15.625-1.95 μg/ml. In conclusion, this optimized system provides a highly variable, simple, and cost-effective alternative to high-throughput screening based on the Calgary Biofilm Device (CBD).
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Affiliation(s)
| | - Dirk Holtmann
- Technische Hochschule MittelhessenUniversity of Applied SciencesGiessenGermany
| | - Daniela Müller
- Technische Hochschule MittelhessenUniversity of Applied SciencesGiessenGermany
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21
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Zhang Y, Cai Y, Zeng L, Liu P, Ma LZ, Liu J. A Microfluidic Approach for Quantitative Study of Spatial Heterogeneity in Bacterial Biofilms. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202200047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Yuzhen Zhang
- Center for Infectious Disease Research School of Medicine Tsinghua University Beijing 100084 China
- Tsinghua-Peking Center for Life Sciences Beijing 100084 China
| | - Yumin Cai
- Center for Infectious Disease Research School of Medicine Tsinghua University Beijing 100084 China
| | - Lingbin Zeng
- Center for Infectious Disease Research School of Medicine Tsinghua University Beijing 100084 China
| | - Peng Liu
- Department of Biomedical Engineering School of Medicine Tsinghua University Beijing 100084 China
| | - Luyan Z. Ma
- State Key Laboratory of Microbial Resources Institute of Microbiology Chinese Academy of Sciences Beijing 100101 China
| | - Jintao Liu
- Center for Infectious Disease Research School of Medicine Tsinghua University Beijing 100084 China
- Tsinghua-Peking Center for Life Sciences Beijing 100084 China
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22
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Guliy OI, Evstigneeva SS, Bunin VD. Microfluidic bioanalytical system for biofilm formation indication. Talanta 2022; 247:123541. [DOI: 10.1016/j.talanta.2022.123541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/02/2022] [Accepted: 05/09/2022] [Indexed: 11/27/2022]
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23
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Effect of Biosynthesized Silver Nanoparticles on Bacterial Biofilm Changes in S. aureus and E. coli. NANOMATERIALS 2022; 12:nano12132183. [PMID: 35808019 PMCID: PMC9268453 DOI: 10.3390/nano12132183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 06/02/2022] [Accepted: 06/16/2022] [Indexed: 11/16/2022]
Abstract
One approach for solving the problem of antibiotic resistance and bacterial persistence in biofilms is treatment with metals, including silver in the form of silver nanoparticles (AgNPs). Green synthesis is an environmentally friendly method to synthesize nanoparticles with a broad spectrum of unique properties that depend on the plant extracts used. AgNPs with antibacterial and antibiofilm effects were obtained using green synthesis from plant extracts of Lagerstroemia indica (AgNPs_LI), Alstonia scholaris (AgNPs_AS), and Aglaonema multifolium (AgNPs_AM). Nanoparticles were characterized by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX) analysis. The ability to quench free radicals and total phenolic content in solution were also evaluated. The antibacterial activity of AgNPs was studied by growth curves as well as using a diffusion test on agar medium plates to determine minimal inhibitory concentrations (MICs). The effect of AgNPs on bacterial biofilms was evaluated by crystal violet (CV) staining. Average minimum inhibitory concentrations of AgNPs_LI, AgNPs_AS, AgNPs_AM were 15 ± 5, 20 + 5, 20 + 5 μg/mL and 20 ± 5, 15 + 5, 15 + 5 μg/mL against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria, respectively. The E. coli strain formed biofilms in the presence of AgNPs, a less dense biofilm than the S. aureus strain. The highest inhibitory and destructive effect on biofilms was exhibited by AgNPs prepared using an extract from L. indica.
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24
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Tang PC, Eriksson O, Sjögren J, Fatsis-Kavalopoulos N, Kreuger J, Andersson DI. A Microfluidic Chip for Studies of the Dynamics of Antibiotic Resistance Selection in Bacterial Biofilms. Front Cell Infect Microbiol 2022; 12:896149. [PMID: 35619647 PMCID: PMC9128571 DOI: 10.3389/fcimb.2022.896149] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/05/2022] [Indexed: 01/01/2023] Open
Abstract
Biofilms are arguably the most important mode of growth of bacteria, but how antibiotic resistance emerges and is selected in biofilms remains poorly understood. Several models to study evolution of antibiotic resistance have been developed, however, their usability varies depending on the nature of the biological question. Here, we developed and validated a microfluidic chip (Brimor) for studying the dynamics of enrichment of antibiotic-resistant bacteria in biofilms using real-time monitoring with confocal microscopy. In situ extracellular cellulose staining and physical disruption of the biomass confirmed Escherichia coli growth as biofilms in the chip. We showed that seven generations of growth occur in 16 h when biofilms were established in the growth chambers of Brimor, and that bacterial death and growth rates could be estimated under these conditions using a plasmid with a conditional replication origin. Additionally, competition experiments between antibiotic-susceptible and -resistant bacteria at sub-inhibitory concentrations demonstrated that the antibiotic ciprofloxacin selected for antibiotic resistance in bacterial biofilms at concentrations 17-fold below the minimal inhibitory concentration of susceptible planktonic bacteria. Overall, the microfluidic chip is easy to use and a relevant model for studying the dynamics of selection of antibiotic resistance in bacterial biofilms and we anticipate that the Brimor chip will facilitate basic research in this area.
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Affiliation(s)
- Po-Cheng Tang
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Olle Eriksson
- U-Print, Uppsala University 3D-Printing Facility, Uppsala University, Uppsala, Sweden
| | | | | | - Johan Kreuger
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
- *Correspondence: Dan I. Andersson, ; Johan Kreuger,
| | - Dan I. Andersson
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- *Correspondence: Dan I. Andersson, ; Johan Kreuger,
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Huang Y, Wang X, Xiang W, Wang T, Otis C, Sarge L, Lei Y, Li B. Forward-Looking Roadmaps for Long-Term Continuous Water Quality Monitoring: Bottlenecks, Innovations, and Prospects in a Critical Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5334-5354. [PMID: 35442035 PMCID: PMC9063115 DOI: 10.1021/acs.est.1c07857] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 05/29/2023]
Abstract
Long-term continuous monitoring (LTCM) of water quality can bring far-reaching influences on water ecosystems by providing spatiotemporal data sets of diverse parameters and enabling operation of water and wastewater treatment processes in an energy-saving and cost-effective manner. However, current water monitoring technologies are deficient for long-term accuracy in data collection and processing capability. Inadequate LTCM data impedes water quality assessment and hinders the stakeholders and decision makers from foreseeing emerging problems and executing efficient control methodologies. To tackle this challenge, this review provides a forward-looking roadmap highlighting vital innovations toward LTCM, and elaborates on the impacts of LTCM through a three-hierarchy perspective: data, parameters, and systems. First, we demonstrate the critical needs and challenges of LTCM in natural resource water, drinking water, and wastewater systems, and differentiate LTCM from existing short-term and discrete monitoring techniques. We then elucidate three steps to achieve LTCM in water systems, consisting of data acquisition (water sensors), data processing (machine learning algorithms), and data application (with modeling and process control as two examples). Finally, we explore future opportunities of LTCM in four key domains, water, energy, sensing, and data, and underscore strategies to transfer scientific discoveries to general end-users.
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Affiliation(s)
- Yuankai Huang
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Xingyu Wang
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Wenjun Xiang
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Tianbao Wang
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Clifford Otis
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Logan Sarge
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yu Lei
- Department
of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Baikun Li
- Department
of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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Abstract
Microbial biofilms have caused serious concerns in healthcare, medical, and food industries because of their intrinsic resistance against conventional antibiotics and cleaning procedures and their capability to firmly adhere on surfaces for persistent contamination. These global issues strongly motivate researchers to develop novel methodologies to investigate the kinetics underlying biofilm formation, to understand the response of the biofilm with different chemical and physical treatments, and to identify biofilm-specific drugs with high-throughput screenings. Meanwhile microbial biofilms can also be utilized positively as sensing elements in cell-based sensors due to their strong adhesion on surfaces. In this perspective, we provide an overview on the connections between sensing and microbial biofilms, focusing on tools used to investigate biofilm properties, kinetics, and their response to chemicals or physical agents, and biofilm-based sensors, a type of biosensor using the bacterial biofilm as a biorecognition element to capture the presence of the target of interest by measuring the metabolic activity of the immobilized microbial cells. Finally we discuss possible new research directions for the development of robust and rapid biofilm related sensors with high temporal and spatial resolutions, pertinent to a wide range of applications.
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Affiliation(s)
- Riccardo Funari
- Dipartimento di Fisica “M. Merlin”, Università degli Studi di Bari Aldo Moro, Via Amendola, 173, Bari 70125, Italy
- CNR, Istituto di Fotonica e Nanotecnologie, Via Amendola, 173, 70125 Bari, Italy
| | - Amy Q. Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
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27
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Sportelli MC, Kranz C, Mizaikoff B, Cioffi N. Recent advances on the spectroscopic characterization of microbial biofilms: A critical review. Anal Chim Acta 2022; 1195:339433. [DOI: 10.1016/j.aca.2022.339433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 02/07/2023]
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Pérez‐Rodríguez S, García‐Aznar JM, Gonzalo‐Asensio J. Microfluidic devices for studying bacterial taxis, drug testing and biofilm formation. Microb Biotechnol 2022; 15:395-414. [PMID: 33645897 PMCID: PMC8867988 DOI: 10.1111/1751-7915.13775] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 12/11/2022] Open
Abstract
Some bacteria have coevolved to establish symbiotic or pathogenic relationships with plants, animals or humans. With human association, the bacteria can cause a variety of diseases. Thus, understanding bacterial phenotypes at the single-cell level is essential to develop beneficial applications. Traditional microbiological techniques have provided great knowledge about these organisms; however, they have also shown limitations, such as difficulties in culturing some bacteria, the heterogeneity of bacterial populations or difficulties in recreating some physical or biological conditions. Microfluidics is an emerging technique that complements current biological assays. Since microfluidics works with micrometric volumes, it allows fine-tuning control of the test conditions. Moreover, it allows the recruitment of three-dimensional (3D) conditions, in which several processes can be integrated and gradients can be generated, thus imitating physiological 3D environments. Here, we review some key microfluidic-based studies describing the effects of different microenvironmental conditions on bacterial response, biofilm formation and antimicrobial resistance. For this aim, we present different studies classified into six groups according to the design of the microfluidic device: (i) linear channels, (ii) mixing channels, (iii) multiple floors, (iv) porous devices, (v) topographic devices and (vi) droplet microfluidics. Hence, we highlight the potential and possibilities of using microfluidic-based technology to study bacterial phenotypes in comparison with traditional methodologies.
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Affiliation(s)
- Sandra Pérez‐Rodríguez
- Aragón Institute of Engineering Research (I3A)Department of Mechanical EngineeringUniversity of ZaragozaZaragoza50018Spain
- Multiscale in Mechanical and Biological Engineering (M2BE)IIS‐AragónZaragozaSpain
- Grupo de Genética de MicobacteriasDepartment of Microbiology, Faculty of MedicineUniversity of ZaragozaIIS AragónZaragoza50009Spain
| | - José Manuel García‐Aznar
- Aragón Institute of Engineering Research (I3A)Department of Mechanical EngineeringUniversity of ZaragozaZaragoza50018Spain
- Multiscale in Mechanical and Biological Engineering (M2BE)IIS‐AragónZaragozaSpain
| | - Jesús Gonzalo‐Asensio
- Grupo de Genética de MicobacteriasDepartment of Microbiology, Faculty of MedicineUniversity of ZaragozaIIS AragónZaragoza50009Spain
- CIBER Enfermedades RespiratoriasInstituto de Salud Carlos IIIMadrid28029Spain
- Institute for Biocomputation and Physics of Complex Systems (BIFI)Zaragoza50018Spain
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Spiegel M, Krzyżek P, Dworniczek E, Adamski R, Sroka Z. In Silico Screening and In Vitro Assessment of Natural Products with Anti-Virulence Activity against Helicobacter pylori. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010020. [PMID: 35011255 PMCID: PMC8746548 DOI: 10.3390/molecules27010020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/15/2021] [Accepted: 12/20/2021] [Indexed: 12/16/2022]
Abstract
Helicobacter pylori is one of the most frequent human pathogens and a leading etiological agent of various gastric diseases. As stringent response, coordinated by a SpoT protein, seems to be crucial for the survivability of H. pylori, the main goal of this article was to use in silico computational studies to find phytochemical compounds capable of binding to the active site of SpoT from H. pylori and confirm the ability of the most active candidates to interfere with the virulence of this bacterium through in vitro experiments. From 791 natural substances submitted for the virtual screening procedure, 10 were chosen and followed for further in vitro examinations. Among these, dioscin showed the most interesting parameters (the lowest MIC, the highest anti-biofilm activity in static conditions, and a relatively low stimulation of morphological transition into coccoids). Therefore, in the last part, we extended the research with a number of further experiments and observed the ability of dioscin to significantly reduce the formation of H. pylori biofilm under Bioflux-generated flow conditions and its capacity for additive enhancement of the antibacterial activity of all three commonly used antibiotics (clarithromycin, metronidazole, and levofloxacin). Based on these results, we suggest that dioscin may be an interesting candidate for new therapies targeting H. pylori survivability and virulence.
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Affiliation(s)
- Maciej Spiegel
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland;
- Correspondence: (M.S.); (P.K.)
| | - Paweł Krzyżek
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, Chalubinskiego 4, 50-368 Wroclaw, Poland;
- Correspondence: (M.S.); (P.K.)
| | - Ewa Dworniczek
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, Chalubinskiego 4, 50-368 Wroclaw, Poland;
| | - Ryszard Adamski
- Laboratory of Microscopic Techniques, Institute of Genetics and Microbiology, University of Wroclaw, Przybyszewskiego 63, 50-001 Wroclaw, Poland;
| | - Zbigniew Sroka
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland;
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Domingues B, Pacheco M, Cruz JE, Carmagnola I, Teixeira‐Santos R, Laurenti M, Can F, Bohinc K, Moutinho F, Silva JM, Aroso IM, Lima E, Reis RL, Ciardelli G, Cauda V, Mergulhão FJ, Gálvez FS, Barros AA. Future Directions for Ureteral Stent Technology: From Bench to the Market. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202100158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Beatriz Domingues
- 3B's Research Group‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark‐Parque Barco Guimarães 4805‐017 Portugal
- ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães 4805‐017 Portugal
| | - Margarida Pacheco
- 3B's Research Group‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark‐Parque Barco Guimarães 4805‐017 Portugal
- ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães 4805‐017 Portugal
| | - Julia E. Cruz
- Endourology‐Endoscopy Department Minimally Invasive Surgery Centre Jesús Usón Cáceres 10071 Spain
| | - Irene Carmagnola
- Department of Mechanical and Aerospace Engineering Politecnico di Torino Turin 10129 Italy
- Polito BIOMedLAB Politecnico di Torino Turin 10129 Italy
| | - Rita Teixeira‐Santos
- LEPABE–Laboratory for Process Engineering Environment Biotechnology and Energy Faculty of Engineering University of Porto Porto 4200‐465 Portugal
| | - Marco Laurenti
- Department of Applied Science and Technology Politecnico di Torino Turin 10129 Italy
| | - Fusun Can
- Department of Medical Microbiology School of Medicine Koc University Istanbul 34450 Turkey
| | - Klemen Bohinc
- Faculty of Health Sciences University of Ljubljana Ljubljana 1000 Slovenia
| | - Fabíola Moutinho
- i3S‐Instituto de Investigação e Inovação em Saúde Universidade do Porto Porto 4200‐135 Portugal
- INEB‐Instituto de Engenharia Biomédica Universidade do Porto Porto 4200‐135 Portugal
| | - Joana M. Silva
- 3B's Research Group‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark‐Parque Barco Guimarães 4805‐017 Portugal
- ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães 4805‐017 Portugal
| | - Ivo M. Aroso
- 3B's Research Group‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark‐Parque Barco Guimarães 4805‐017 Portugal
- ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães 4805‐017 Portugal
| | - Estêvão Lima
- School of Health Sciences Life and Health Sciences Research Institute (ICVS) University of Minho Braga 4710‐057 Portugal
| | - Rui L. Reis
- 3B's Research Group‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark‐Parque Barco Guimarães 4805‐017 Portugal
- ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães 4805‐017 Portugal
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering Politecnico di Torino Turin 10129 Italy
- Polito BIOMedLAB Politecnico di Torino Turin 10129 Italy
| | - Valentina Cauda
- Department of Applied Science and Technology Politecnico di Torino Turin 10129 Italy
| | - Filipe J. Mergulhão
- LEPABE–Laboratory for Process Engineering Environment Biotechnology and Energy Faculty of Engineering University of Porto Porto 4200‐465 Portugal
| | - Federico S. Gálvez
- Endourology‐Endoscopy Department Minimally Invasive Surgery Centre Jesús Usón Cáceres 10071 Spain
| | - Alexandre A. Barros
- 3B's Research Group‐Research Institute on Biomaterials Biodegradables and Biomimetics University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Avepark‐Parque Barco Guimarães 4805‐017 Portugal
- ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães 4805‐017 Portugal
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Antibiofilm and Antimicrobial-Enhancing Activity of Chelidonium majus and Corydalis cheilanthifolia Extracts against Multidrug-Resistant Helicobacter pylori. Pathogens 2021; 10:pathogens10081033. [PMID: 34451497 PMCID: PMC8400265 DOI: 10.3390/pathogens10081033] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 01/15/2023] Open
Abstract
Helicobacter pylori is a Gram-negative bacterium that colonizes the stomach of about 60% of people worldwide. The search for new drugs with activity against H. pylori is now a hotspot in the effective and safe control of this bacterium. Therefore, the aim of this research was to determine the antibacterial activity of extracts from selected plants of the Papaveraceae family against planktonic and biofilm forms of the multidrug-resistant clinical strain of H. pylori using a broad spectrum of analytical in vitro methods. It was revealed that among the tested extracts, those obtained from Corydalis cheilanthifolia and Chelidonium majus were the most active, with minimal inhibitory concentrations (MICs) of 64 µg/mL and 128 µg/mL, respectively. High concentrations of both extracts showed cytotoxicity against cell lines of human hepatic origin. Therefore, we attempted to lower their MICs through the use of a synergistic combination with synthetic antimicrobials as well as by applying cellulose as a drug carrier. Using checkerboard assays, we determined that both extracts presented synergistic interactions with amoxicillin (AMX) and 3-bromopyruvate (3-BP) (FICI = 0.5) and additive relationships with sertraline (SER) (FICI = 0.75). The antibiofilm activity of extracts and their combinations with AMX, 3-BP, or SER, was analyzed by two methods, i.e., the microcapillary overgrowth under flow conditions (the Bioflux system) and assessment of the viability of lawn biofilms after exposure to drugs released from bacterial cellulose (BC) carriers. Using both methods, we observed a several-fold decrease in the level of H. pylori biofilm, indicating the ability of the tested compounds to eradicate the microbial biofilm. The obtained results indicate that application of plant-derived extracts from the Papaveraceae family combined with synthetic antimicrobials, absorbed into organic BC carrier, may be considered a promising way of fighting biofilm-forming H. pylori.
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Chen X, Ma Y, Gui Q, Hu S, Pan W, Lan Y, Zeng M, Zhou T, Su Z. An antifouling polymer for dynamic anti-protein adhesion analysis by a quartz crystal microbalance. Analyst 2021; 146:4636-4641. [PMID: 34169938 DOI: 10.1039/d1an00856k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nowadays, the non-specific adsorption of biomolecules is a key issue in numerous fields. Herein, an improved antifouling molecule was synthesized by grafting phenol with oligopoly (ethylene glycol), named (4-(2-(2-ethoxyethoxy) ethoxy) phenol (EEP). An ideal antifouling polymer coating (PEEP) was synthesized by the mechanism of electropolymerization of phenol. Quartz crystal microbalance (QCM), a sensitive mass sensor, was used to dynamically monitor both the modification and anti-protein adhesion (with bovine serum albumin as the model) process. Quantitatively, less proteins were observed to adhere to the modified electrode (277.8 ng for bare GCE and 8.88 ng for the modified GCE). Fourier transform infrared spectrophotometry (FT-IR), scanning electron microscopy (SEM), and electrochemical methods were used to study the coatings in detail. In this study, EEP was synthesized for the electrochemical preparation of an antifouling coating and characterized by QCM and electrochemical methods. The mild preparation environment (lower potential window and in phosphate buffered saline) and one-step method enable potential applications of PEEP in the field of biomaterials and biosensors.
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Affiliation(s)
- Ximing Chen
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China.
| | - Yan Ma
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China. and Guangdong Dayuan Oasis Food Safety Technology Co., Ltd, Guangzhou 510000, PR China
| | - Qingwen Gui
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China.
| | - Shiyu Hu
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China.
| | - Weisong Pan
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, PR China and College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China.
| | - Yaqin Lan
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, PR China and College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China.
| | - Mei Zeng
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, PR China and College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China.
| | - Tiean Zhou
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, PR China and College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China.
| | - Zhaohong Su
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China. and Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, PR China
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Bobadilla Alvarez MC, Palomino Cadenas EJ. CONTROL DE Aedes aegypti (DIPTERA: CULICIDAE) MEDIANTE ACTINOBACTERIAS FORMADORAS DE BIOPELÍCULAS. ACTA BIOLÓGICA COLOMBIANA 2021. [DOI: 10.15446/abc.v26n3.86966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
El phylum Actinobacteria incluye miembros productores de compuestos bioinsecticidas. No obstante, la sobreexplotacion de metabolitos derivados de Streptomyces ha conllevado a explorar nuevas moléculas provenientes de bacterias no estreptomicetos para contrarrestar la resistencia a insecticidas químicos en Aedes aegypti. Concordantes con el uso de bioagentes ecológicos, esta investigación caracterizó actinobacterias formadoras de biopelículas con el fin de evaluar su dinámica de crecimiento, actividad larvicida y efectos subletales. La identificación, crecimiento de biopelículas y bioactividades se realizaron por cultivos, análisis de imágenes por fotomicrografía y bioensayos. Los resultados mostraron que las biopelículas pertenecen a Pseudonocardiaceae (PsA1TA) y Corynebacteriaceae (CoA2CA) característicamente dependientes del revestimiento cuticular. PsA1TA coloniza estructuras membranosas de tórax y abdomen con microcolonias aleatoriamente distribuidas que desarrollan a extensas biopelículas mono y biestratificadas, al cubrir cuatro veces la amplitud toracoabdominal (envergadura infectiva entre 1010 µm a 1036 µm). En contraste, CoA2CA envuelve radialmente estructuras esclerotizadas cefálica y anal al triplicar la amplitud de tales órganos (1820 a 2030 µm y 1650 a 1860 µm, respectivamente). Las biopelículas ejercieron mortalidad diferenciada a todos los estadios larvales, no obstante, PsA1TA resultó más mortal y virulento en el segundo estadio larval (58 %-96 horas, TL50: 3,4 días), mientras que CoA2CA lo fue en el cuarto estadio larval (85 %-96 horas, TL50: 2,5 días). CoA2CA indujo emergencia incompleta de adultos farados y despliegue de tarsos curvos en emergentes, además de revestir con robustas biopelículas cadáveres larvarios. Las biopelículas actinobacterianas revelaron ejercer función larvicida y respuestas subletales en A. aegypti.
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Guzmán-Soto I, McTiernan C, Gonzalez-Gomez M, Ross A, Gupta K, Suuronen EJ, Mah TF, Griffith M, Alarcon EI. Mimicking biofilm formation and development: Recent progress in in vitro and in vivo biofilm models. iScience 2021; 24:102443. [PMID: 34013169 PMCID: PMC8113887 DOI: 10.1016/j.isci.2021.102443] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Biofilm formation in living organisms is associated to tissue and implant infections, and it has also been linked to the contribution of antibiotic resistance. Thus, understanding biofilm development and being able to mimic such processes is vital for the successful development of antibiofilm treatments and therapies. Several decades of research have contributed to building the foundation for developing in vitro and in vivo biofilm models. However, no such thing as an "all fit" in vitro or in vivo biofilm models is currently available. In this review, in addition to presenting an updated overview of biofilm formation, we critically revise recent approaches for the improvement of in vitro and in vivo biofilm models.
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Affiliation(s)
- Irene Guzmán-Soto
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
| | - Christopher McTiernan
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
| | - Mayte Gonzalez-Gomez
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
| | - Alex Ross
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, K1H8M5, Canada
| | - Keshav Gupta
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
| | - Erik J. Suuronen
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
| | - Thien-Fah Mah
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, K1H8M5, Canada
| | - May Griffith
- Centre de Recherche Hôpital Maisonneuve-Rosemont, Montréal, QC, H1T 2M4, Canada
- Département d'ophtalmologie, Université de Montréal, Montréal, QC, H3T1J4, Canada
| | - Emilio I. Alarcon
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON, K1Y4W7, Canada
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, K1H8M5, Canada
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35
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Optical fibers in analytical electrochemistry: Recent developments in probe design and applications. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116196] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Karimifard S, Li X, Elowsky C, Li Y. Modeling the impact of evolving biofilms on flow in porous media inside a microfluidic channel. WATER RESEARCH 2021; 188:116536. [PMID: 33125999 DOI: 10.1016/j.watres.2020.116536] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/22/2020] [Accepted: 10/18/2020] [Indexed: 06/11/2023]
Abstract
This study integrates microfluidic experiments and mathematical modeling to study the impacts of biofilms on flow in porous media and to explore approaches to simplify modeling permeability with complicated biofilm geometries. E. coli biofilms were grown in a microfluidic channel packed with a single layer of glass beads to reach three biofilm levels: low, intermediate, and high, with biofilm ratios (βr) of 2.7%, 17.6%, and 55.2%, respectively. Two-dimensional biofilm structures and distributions in the porous medium were modeled by digitizing confocal images and considering broad ranges of biofilm permeability (kb) (from 10-15 m2 to 10-7 m2) and biofilm porosity (εb) (from 0.2 to 0.8). The overall permeability of the porous medium (k), the flow pathways and the overall/local pressure gradients were found to be highly dependent on βr and kb but were moderately impacted by εb when the biofilm levels were high and intermediate with kb>10-11 m2. When biofilm structures are well developed, simplified biofilm geometries, such as uniform coating and symmetric contact filling, can provide reasonable approximations of k.
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Affiliation(s)
- Shahab Karimifard
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
| | - Xu Li
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States
| | - Christian Elowsky
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Yusong Li
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, United States.
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Maale GE, Eager JJ, Srinivasaraghavan A, Mohammadi DK, Kennard N. The evolution from the two stage to the one stage procedure for biofilm based periprosthetic joint infections (PJI). Biofilm 2020; 2:100033. [PMID: 33447818 PMCID: PMC7798473 DOI: 10.1016/j.bioflm.2020.100033] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/16/2020] [Accepted: 07/22/2020] [Indexed: 01/21/2023] Open
Abstract
A definitive consensus on the optimal limb salvage protocol for infected total joints does not currently exist. Popular, is the two-stage revision which calls for the use of an antibiotic loaded spacer followed by a delayed exchange. Our question is whether single-stage revisions for biofilm based infected arthroplasties results in comparable or possibly better patient outcomes as compared to those reported for two-stage revisions. We retrospectively reviewed 500 cases of one-stage revisions for periprosthetic joint infections (PJI) using dual setup with radical debridement, definitive reconstruction with antibiotic loaded cement and implantation of antibiotic calcium sulfate pellets between the years 2005-2017. The revisions included 351 total knees, 122 hips, 2 hip-femur-knees, 13 shoulders, 10 elbows, and 2 shoulder-humerus-elbows. The patient population had a mean follow-up of 60 months (range: 24 months-14 years) and mean patient age of 61 years old, consisting of 250 males and 250 females. Patient comorbidities were reviewed, classified using McPherson's staging for PJIs, and compared to the Cierny & Mader classification system. Successful treatment was defined as a joint without recurrence of infection, for a minimum of 2 years, and limb preservation. Based on our findings, one-stage revision of PJIs demonstrates at least as good an infection eradication rate as two-stage revision: 88% vs 85% respectively.
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Affiliation(s)
- Gerhard E. Maale
- Dallas-Ft. Worth Sarcoma Group, 4708 Alliance Blvd, Plano, TX, 75093, United States
| | - John J. Eager
- Emory University Hospital System, 1364 Clifton Rd, Atlanta, GA, 30322, United States
| | | | | | - Nicole Kennard
- Dallas-Ft. Worth Sarcoma Group, 4708 Alliance Blvd, Plano, TX, 75093, United States
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