1,362 results match your criteria Biofouling[Journal]


Proteomic profile of the saliva and plasma protein layer adsorbed on Ti-Zr alloy: the effect of sandblasted and acid-etched surface treatment.

Biofouling 2020 May 26:1-14. Epub 2020 May 26.

Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.

Titanium-zirconium (Ti-Zr) alloy has been widely used as a biomaterial for implant devices, and it is commonly treated by sandblasting followed by acid etching (SLA) to improve biological responses. Although protein adsorption is the first biological response, the effect of this SLA treatment on the proteomic profile of proteins adsorbed from saliva and blood plasma has not been tested. In this study, the proteomic profile was evaluated by liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Read More

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http://dx.doi.org/10.1080/08927014.2020.1769613DOI Listing

Antimicrobial activity and antibiotic synergy of a biphosphinic ruthenium complex against clinically relevant bacteria.

Biofouling 2020 May 25:1-13. Epub 2020 May 25.

Laboratório Integrado de Biomoléculas, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Fortaleza, CE, Brasil.

The aim of this study was to investigate the antibacterial activity, antibiotic-associated synergy, and anti-biofilm activity of the ruthenium complex, -[RuCl (dppb) (bqdi)] (RuNN). RuNN exhibited antimicrobial activity against Gram-positive bacteria with minimum inhibitory concentration (MIC) values ranging from 15.6 to 62. Read More

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http://dx.doi.org/10.1080/08927014.2020.1771317DOI Listing

Physico-chemical and antimicrobial properties and the shelf life of experimental endodontic sealers containing metal methacrylates.

Biofouling 2020 May 22:1-12. Epub 2020 May 22.

Laboratory of Microbiology, Pelotas Dental School, Federal University of Pelotas, Pelotas, RS, Brazil.

The objective of this study was to evaluate the physico-chemical and antimicrobial properties of a dual polymerization experimental endodontic sealer (E) and experimental sealers containing dibutyltin methacrylate (Sn) (ETs) or calcium methacrylate (Ca) (ECs). The pH and ion release levels of the sealers were measured. The dimensional stability was evaluated in accordance with ISO 6876. Read More

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http://dx.doi.org/10.1080/08927014.2020.1767081DOI Listing

Development of a high throughput and low cost model for the study of semi-dry biofilms.

Biofouling 2020 May 22:1-13. Epub 2020 May 22.

Institute of Healthcare Policy and Practice, School of Health and Life Sciences, University of the West of Scotland, Paisley, UK.

The persistence of microorganisms as biofilms on dry surfaces resistant to the usual terminal cleaning methods may pose an additional risk of transmission of infections. In this study, the Centre for Disease Control (CDC) dry biofilm model (DBM) was adapted into a microtiter plate format (Model 1) and replicated to create a novel model that replicates conditions commonly encountered in the healthcare environment (Model 2). Biofilms of grown in the two models were comparable to the biofilms of the CDC DBM in terms of recovered log CFU well. Read More

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http://dx.doi.org/10.1080/08927014.2020.1766030DOI Listing

Continuous flow system for biofilm formation using controlled concentrations of from chicken carcass and coupled to electrochemical impedance detection.

Biofouling 2020 May 21:1-14. Epub 2020 May 21.

Department of Food Science and Technology, University of Georgia, Athens, GA, USA.

Most studies dealing with monitoring the dynamics of biofilm formation use microbial suspensions at high concentrations. These conditions do not always represent food or water distribution systems. A continuous flow system capable of controlling the concentration of the microbial suspension stream from 10 to 10 CFU ml is reported. Read More

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http://dx.doi.org/10.1080/08927014.2020.1763966DOI Listing

Amphiphilic hydrolyzable polydimethylsiloxane--poly(ethyleneglycol methacrylate--trialkylsilyl methacrylate) block copolymers for marine coatings. II. Antifouling laboratory tests and field trials.

Biofouling 2020 May 19:1-11. Epub 2020 May 19.

Laboratoire MAPIEM, E.A.4323, SeaTech Ecole d'Ingénieur, Université de Toulon, Toulon Cedex 9, France.

Poly(dimethylsiloxane) (PDMS) elastomer coatings containing an amphiphilic hydrolyzable diblock copolymer additive were prepared and their potential as marine antifouling and antiadhesion materials was tested. The block copolymer additive consisted of a PDMS first block and a random poly(trialkylsilyl methacrylate (TRSiMA, R = butyl, isopropyl)--poly(ethyleneglycol) methacrylate (PEGMA) copolymer second block. PDMS--TRSiMA block copolymer additives without PEGMA units were also used as additives. Read More

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http://dx.doi.org/10.1080/08927014.2020.1762868DOI Listing

Preparation of a mesoporous silica quorum quenching medium for wastewater treatment using a membrane bioreactor.

Biofouling 2020 May 19:1-9. Epub 2020 May 19.

School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea.

Various quorum quenching (QQ) media have been developed to mitigate membrane biofouling in a membrane bioreactor (MBR). However, most are expensive, unstable and easily trapped in hollow fibre membranes. Here, a sol-gel method was used to develop a mesoporous silica medium entrapping a QQ bacterial strain ( sp. Read More

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http://dx.doi.org/10.1080/08927014.2020.1749601DOI Listing

Antifungal evaluation of traditional herbal monomers and their potential for inducing cell wall remodeling in and .

Biofouling 2020 Mar 15;36(3):319-331. Epub 2020 May 15.

Anhui Provincial Key Laboratory for Chinese Herbal Compound, Anhui Academy of Chinese Medicine, Hefei, Anhui, PR China.

Traditional herbal monomers (THMs) are widely distributed in many traditional Chinese formulas (TCFs) and decoctions (TCDs) and are frequently used for the prevention and treatment of fungal infections. The antifungal activities of five common THMs, including sodium houttuyfonate (SH), berberine (BER), palmatine (PAL), jatrorrhizine (JAT) and cinnamaldehyde (CIN), and their potential for inducing cell wall remodeling (CWR), were evaluated against SC5314 and 12372. SH/CIN plus BER/PAL/JAT showed synergistic antifungal activity against both isolates. Read More

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http://dx.doi.org/10.1080/08927014.2020.1759559DOI Listing

Biofilms formed by and species: focus on the extracellular matrix.

Biofouling 2020 Mar 13;36(3):308-318. Epub 2020 May 13.

Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.

In the present study, the composition of the extracellular matrix (ECM) of the biofilm formed by , and on a polystyrene surface was investigated. Confocal laser scanning microscopy revealed a dense mycelial mass, with an ECM covering/interspersing the fungal cells and containing carbohydrate-rich molecules (e.g. Read More

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http://dx.doi.org/10.1080/08927014.2020.1759558DOI Listing

Novel thiazolinyl-picolinamide based palladium(II) complex-impregnated urinary catheters quench the virulence and disintegrate the biofilms of uropathogens.

Biofouling 2020 Mar 13;36(3):351-367. Epub 2020 May 13.

Biofilm Biology Laboratory, Centre for Research on Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed University, Tirumalaisamudram, Tamil Nadu, India.

and are prominent members belonging to the group of ESKAPE pathogens responsible for Urinary Tract Infections (UTI) and nosocomial infections. Both the pathogens regulate several virulence factors, including biofilm formation through quorum sensing (QS), an intercellular communication mechanism. The present study describes the anti-biofilm and QS quenching effect of thiazolinyl-picolinamide based palladium(II) complexes against and Palladium(II) complexes showed quorum sensing inhibitory potential in inhibiting swarming motility behaviour, pyocyanin production and other QS mediated virulence factors in both and . Read More

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http://dx.doi.org/10.1080/08927014.2020.1765159DOI Listing

Ship hull in-water cleaning and its effects on fouling-control coatings.

Biofouling 2020 Mar 13;36(3):332-350. Epub 2020 May 13.

Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Gothenburg, Sweden.

Today, ship hull fouling is managed through fouling-control coatings, complemented with in-water cleaning. During cleaning, coating damage and wear must be avoided, for maximum coating lifetime and reduced antifoulant release. When possible, cleaning should target early stages of fouling, using minimal forces. Read More

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http://dx.doi.org/10.1080/08927014.2020.1762079DOI Listing

Prolonged inhibitory effects against planktonic growth, adherence, and biofilm formation of pathogens causing ventilator-associated pneumonia using a novel polyamide/silver nanoparticle composite-coated endotracheal tube.

Biofouling 2020 Mar 5;36(3):292-307. Epub 2020 May 5.

Department of Microbiology, Faculty of Science and Natural Product Research Center of Excellence, Excellence Research Laboratory on Natural Products, Prince of Songkla University, Hat Yai, Songkhla, Thailand.

Microbial cells can rapidly form biofilm on endotracheal tubes (ETT) causing ventilator-associated pneumonia, a serious complication in patients receiving mechanical ventilation. A novel polyamide with a good balance of hydrophilic/hydrophobic moieties was used for the embedment of green-reduction silver nanoparticles (AgNPs) for the composite-coated ETT. The films were conformal with a thickness of ∼ 17 ± 3 µm accommodating high loading of 60 ± 35 nm spherical-shaped AgNPs. Read More

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http://dx.doi.org/10.1080/08927014.2020.1759041DOI Listing

activity of the antimicrobial peptide AP7121 against the human methicillin-resistant biofilm producers and .

Biofouling 2020 Mar 27;36(3):266-275. Epub 2020 Apr 27.

Departamento Clínico, Universidad Nacional del Centro de la Provincia de Buenos Aires, Olavarría, Argentina.

activity against methicillin-resistant (MRSA) and biofilm producers from blood cultures of patients with prosthetic hip infections was evaluated. The Minimum Inhibitory Concentration (MIC) for AP7121 was determined and the bactericidal activity of AP7121 (MICx1, MICx4) against planktonic cells was studied at 4, 8 and 24 h. The biofilms formed were incubated with AP7121 (MICx1, MICx4) for 1 and 24 h. Read More

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http://dx.doi.org/10.1080/08927014.2020.1756266DOI Listing

Estimates of environmental loading from copper alloy materials.

Biofouling 2020 Mar 27;36(3):276-291. Epub 2020 Apr 27.

Cyber, Science and Technology Department,Naval Information Warfare Center Pacific, San Diego, CA, USA.

Metal release rates were measured from four different copper alloy-based materials used by the aquaculture industry: copper sheet machined into a diamond mesh, copper alloy mesh (CAM), silicon bronze welded wire mesh, and copper sheeting, and compared with conventional nylon aquaculture net treated with a cuprous oxide antifouling (AF) coating. Release rates were measured in San Diego Bay using a Navy-developed Dome enclosure system at nine different time points over one year. As expected, copper was the predominant metal released, followed by zinc and nickel, which were fractional components of the materials tested. Read More

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http://dx.doi.org/10.1080/08927014.2020.1756267DOI Listing

Tea extracts differentially inhibit and biofilm colonization depending on the steeping temperature.

Biofouling 2020 Mar 24;36(3):256-265. Epub 2020 Apr 24.

Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea.

This study aimed to evaluate the effects of tea extracts on oral biofilm colonization depending on steeping temperature. and were cultured and treated with green or black tea extracts prepared under different steeping conditions. Biofilm formation, glucosyltransferase (GTF) levels, bacterial growth, and acidogenicity were evaluated. Read More

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http://dx.doi.org/10.1080/08927014.2020.1755429DOI Listing

Anti-biofilm activity of a novel pit and fissure self-adhesive sealant modified with metallic monomers.

Biofouling 2020 Mar 24;36(3):245-255. Epub 2020 Apr 24.

Biofilm Research Labs, Levy Center for Oral Health, Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Dental plaque is a biofilm composed of a complex oral microbial community. The accumulation of plaque in the pit and fissures of dental elements often leads to the development of tooth decay (dental caries). Here, potent anti-biofilm materials were developed by incorporating zinc methacrylates or di-n-butyl-dimethacrylate-tin into the light-curable sealant and their physical, mechanical, and biological properties were evaluated. Read More

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http://dx.doi.org/10.1080/08927014.2020.1748603DOI Listing

Biomaterials for orthopedics: anti-biofilm activity of a new bioactive glass coating on titanium implants.

Biofouling 2020 Feb 22;36(2):234-244. Epub 2020 Apr 22.

Department of General and Specialized Nursing, College of Nursing of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.

This study evaluated adhesion and biofilm formation by , and on surfaces of titanium (Ti) and titanium coated with F18 Bioactive Glass (BGF18). Biofilms were grown and the areas coated with biofilm were determined after 2, 4 and 8 h. Microscopy techniques were applied in order to visualize the structure of the mature biofilm and the extracellular matrix. Read More

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http://dx.doi.org/10.1080/08927014.2020.1755842DOI Listing
February 2020

The effect of gold and silver nanoparticles, chitosan and their combinations on bacterial biofilms of food-borne pathogens.

Biofouling 2020 Feb 22;36(2):222-233. Epub 2020 Apr 22.

Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Czech Republic.

The antimicrobial activity of gold and silver nanoparticles (AuNPs, AgNPs), chitosan (CS) and their combinations was established by determining the minimum inhibitory concentration for planktonic (MICPC) and biofilm growth (MICBC), for biofilm formation (MICBF), metabolic activity (MICBM) and reduction (MICBR), and for the metabolic activity of preformed biofilm (MICMPB). Biofilms were quantified in microtitre plates by crystal violet staining and metabolic activity was evaluated by the MTT assay. Chitosan effectively suppressed biofilm formation (0. Read More

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http://dx.doi.org/10.1080/08927014.2020.1751132DOI Listing
February 2020

efficacy of the lipopeptide biosurfactant surfactin-C and its complexes with divalent counterions to inhibit biofilm and hyphal formation.

Biofouling 2020 Feb 15;36(2):210-221. Epub 2020 Apr 15.

Department of Biotechnology and Food Microbiology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.

Surfactin is a type of cyclic lipopeptide biosurfactant implicated in a wide range of applications. Although its antimicrobial activity has been characterized, its effect on physiology remains to be elucidated. The present study evaluated the influence of surfactin-C (SF) and its complexes with divalent counterions on biofilm formation and preformed biofilms. Read More

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http://dx.doi.org/10.1080/08927014.2020.1752370DOI Listing
February 2020

Conditioning film formation and its influence on the initial adhesion and biofilm formation by a cyanobacterium on photobioreactor materials.

Biofouling 2020 Feb 13;36(2):183-199. Epub 2020 Apr 13.

Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA.

Although cyanobacteria are a common group of microorganisms well-suited to utilization in photobioreactors (PBRs), studies of cyanobacteria fouling and its prevention are scarce. Using a cyanobacterium, sp. PCC 7120, which had been genetically modified to enhance linalool production, the formation of conditioning films and the effects of these on the physico-chemical surface properties of various PBR materials during initial adhesion and biofilm formation were investigated. Read More

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http://dx.doi.org/10.1080/08927014.2020.1748186DOI Listing
February 2020

Combining a bio-based polymer and a natural antifoulant into an eco-friendly antifouling coating.

Biofouling 2020 Feb 7;36(2):200-209. Epub 2020 Apr 7.

Department of Ocean Science, Division of Life Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science & Technology, Hong Kong, China.

Biodegradable polymers are promising binders and carriers for natural antifoulants. In the present study, an antifouling (AF) coating was developed by adding a non-toxic AF compound (butenolide) to a bio-based and biodegradable poly(lactic acid)-based polyurethane. Mass loss measurement showed that the polymer degraded in seawater at a rate of 0. Read More

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http://dx.doi.org/10.1080/08927014.2020.1749270DOI Listing
February 2020

Frictional drag measurements of large-scale plates in an enhanced plane channel flowcell.

Biofouling 2020 Feb 1;36(2):169-182. Epub 2020 Apr 1.

School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK.

This paper describes the design of an enhanced, plane channel, flowcell and its use for testing large-scale coated plates (0.6 m × 0.22 m) in fully developed flow, over a wide range of Reynolds numbers, with low uncertainty. Read More

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http://dx.doi.org/10.1080/08927014.2020.1742887DOI Listing
February 2020

Thermoplastic, rubber-like marine antifouling coatings with micro-structures mechanical embossing.

Biofouling 2020 Feb 30;36(2):138-145. Epub 2020 Mar 30.

Laboratory of Stimuli-Responsive Functional Materials & Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands.

New processing routes and materials for non-biocidal, antifouling (AF) coatings with an improved performance are currently much sought after for a range of marine applications. Here, the processing, physical properties and marine AF performance of a fluorinated coating based on a thermoplastic (non-crosslinked) fluorinated polymer are reported. It was found that the addition of lubricating oil and hydrodynamic drag reducing microstructures improved the AF properties substantially, i. Read More

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http://dx.doi.org/10.1080/08927014.2020.1734576DOI Listing
February 2020

Effects of a sub-minimum inhibitory concentration of chlorhexidine gluconate on the development of multi-species biofilms.

Biofouling 2020 Feb 17;36(2):146-158. Epub 2020 Mar 17.

Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.

Following antimicrobial administrations in oral environments, bacteria become exposed to a sub-minimum inhibitory concentration (sub-MIC), which can induce single-species biofilms. This study explored the effects of chlorhexidine gluconate (CHG) at a sub-MIC on multi-species biofilms comprising , and . CHG at a sub-MIC was found to induce biofilm growth, although the bacterial growth was not significantly different from that in the control. Read More

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http://dx.doi.org/10.1080/08927014.2020.1739271DOI Listing
February 2020

Inhibition of methicillin-resistant (MRSA) biofilm by cationic poly (D, L-lactide-co-glycolide) nanoparticles.

Biofouling 2020 Feb 17;36(2):159-168. Epub 2020 Mar 17.

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.

The emergent need for new treatment methods for multi-drug resistant pathogens such as methicillin-resistant (MRSA) has focused attention on novel potential tools like nanoparticles (NPs). In the present study, a drug-free cationic nanoparticles (CNPs) system was developed and its anti-MRSA effects were firstly investigated. The results showed that CNPs (261. Read More

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http://dx.doi.org/10.1080/08927014.2020.1740687DOI Listing
February 2020

Inhibition of and biofilms by centipede oil and linoleic acid.

Biofouling 2020 Feb 24;36(2):126-137. Epub 2020 Feb 24.

School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea.

Microbial biofilms are associated with persistent infections because of their high tolerance to antimicrobial agents and host defenses. The effects of centipede oil from and its main components were investigated to identify non-toxic biofilm inhibitors. Centipede oil and linoleic acid at 20 µg ml markedly inhibited biofilm formation by two fluconazole-resistant strains and three strains without affecting their planktonic cell growth. Read More

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http://dx.doi.org/10.1080/08927014.2020.1730333DOI Listing
February 2020

Visualizing the macroscale spatial distributions of biofilms in complex flow channels using industrial computed tomography.

Biofouling 2020 Feb 24;36(2):115-125. Epub 2020 Feb 24.

College of Water Resources and Civil Engineering, China Agricultural University, Beijing, PR China.

The presence of biofilms in enclosed pipelines can lead to numerous deleterious issues. To date, it has been difficult to use optical imaging techniques to monitor the macroscale spatial distributions of biofilms. To address this concern, a combination of industrial computed tomography (ICT) and a contrast agent was explored to noninvasively visualize biofilms in three types of drip irrigation emitters. Read More

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http://dx.doi.org/10.1080/08927014.2020.1728260DOI Listing
February 2020

Influence of surface copper content on biofilm control using chlorine and mechanical stress.

Biofouling 2020 01 30;36(1):1-13. Epub 2020 Jan 30.

LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal.

This work aimed to evaluate the action of materials with different copper content (0, 57, 96 and 100%) on biofilm formation and control by chlorination and mechanical stress. isolated from drinking water was used as a model microorganism and biofilms were developed in a rotating cylinder reactor using realism-based shear stress conditions. Biofilms were characterized phenotypically and exposed to three control strategies: 10 mg l of free chlorine for 10 min, an increased shear stress (a fluid velocity of 1. Read More

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http://dx.doi.org/10.1080/08927014.2019.1708334DOI Listing
January 2020

Impediment to growth and yeast-to-hyphae transition in by copper oxide nanoparticles.

Biofouling 2020 01 30;36(1):56-72. Epub 2020 Jan 30.

Biofouling and Thermal Ecology Section, Water and Steam Chemistry Division, Bhabha Atomic Research Centre Facilities, Kalpakkam, India.

The effects of two prominent copper oxide nanoparticles (CuO-NP and CuO-NP), with the oxidation state of Cu (cupric) and Cu (cuprous), on were evaluated. CuO-NP and CuO-NP were synthesized and characterized by XRD, FESEM, HR-TEM and Zeta potential. At sub-MIC (50 µg ml), both cupric and cuprous oxide NPs prevented yeast-to-hyphae switching and wrinkling behaviour in . Read More

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http://dx.doi.org/10.1080/08927014.2020.1715371DOI Listing
January 2020

Effect of sub-lethal chemical disinfection on the biofilm forming ability, resistance to antibiotics and expression of virulence genes of Enteritidis biofilm-surviving cells.

Biofouling 2020 01 30;36(1):101-112. Epub 2020 Jan 30.

Laboratório de Investigação em Biofilmes Rosário Oliveira, Centre of Biological Engineering, University of Minho, Braga, Portugal.

Although disinfection procedures are widely implemented in food environments, bacteria can survive and present increased virulence/resistance. Since little is known about these phenomena regarding biofilms, this study aimed to investigate the effect of chemical disinfection on biofilm-derived cells of Enteritidis. Using a reference strain (NCTC 13349) and a food isolate (350), biofilm susceptibility to benzalkonium chloride (BAC), sodium hypochlorite (SH) and hydrogen peroxide (HP) was evaluated and biofilms were exposed to sub-lethal concentrations of each disinfectant. Read More

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http://dx.doi.org/10.1080/08927014.2020.1719077DOI Listing
January 2020

CUSUM chart method for continuous monitoring of antifouling treatment of tubular heat exchangers in open-loop cooling seawater systems.

Biofouling 2020 01 27;36(1):73-85. Epub 2020 Jan 27.

Department of Nautical Sciences and Marine Systems Engineering, University of the Basque Country UPV/EHU, Portugalete, Spain.

A CUSUM chart method is presented as an alternative tool for continuous monitoring of an electromagnetic field-based (EMF) antifouling (AF) treatment of a heat exchanger cooled by seawater. During an initial experimental phase, biofilm growth was allowed in a heat exchanger formed of four tubes until sufficient growth had been established. In two of the tubes, continuous EMF treatment was then applied. Read More

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http://dx.doi.org/10.1080/08927014.2020.1715954DOI Listing
January 2020

Various biofilm matrices of the emerging pathogen : exopolysaccharides, proteins, eDNA and their correlation with biofilm mass.

Biofouling 2020 01 27;36(1):86-100. Epub 2020 Jan 27.

Laboratorio di Patologia delle Infezioni Associate all'Impianto, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

is an emerging high-virulent pathogen causative of hospital-acquired infections. Biofilm formation is a complex pathogenic process that leads to well-established bacterial communities. There is a paucity of data on the composition of the biofilm matrix among strains. Read More

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http://dx.doi.org/10.1080/08927014.2020.1716217DOI Listing
January 2020

Variations in the microbial community of biofilms under different near-wall hydraulic shear stresses in agricultural irrigation systems.

Biofouling 2020 01 27;36(1):44-55. Epub 2020 Jan 27.

College of Water Resources and Civil Engineering, China Agricultural University, Beijing, P.R. China.

The hydraulic characteristics along agricultural irrigation pipelines directly affect the local near-wall hydraulic shear stress and biofilm accumulation. However, the variations in the microbial community during the process remain unknown. Based on the Couette-Taylor reactor, a device was developed to accurately control the hydraulic shear stress. Read More

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http://dx.doi.org/10.1080/08927014.2020.1714600DOI Listing
January 2020

Adhesion of , , , to contact lenses under the influence of an artificial tear solution.

Biofouling 2020 01 23;36(1):32-43. Epub 2020 Jan 23.

Centre for Ocular Research & Education, School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada.

Corneal infection is a devastating sight-threatening complication that is associated with contact lens (CL) wear, commonly caused by . Lately, , , and have been associated with corneal infection. This study investigated the adhesion of these emerging pathogens to CLs, under the influence of an artificial tear solution (ATS) containing a variety of components commonly found in human tears. Read More

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http://dx.doi.org/10.1080/08927014.2019.1710832DOI Listing
January 2020

Correction.

Authors:

Biofouling 2020 Jan 14;36(1):113. Epub 2020 Jan 14.

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http://dx.doi.org/10.1080/08927014.2020.1713544DOI Listing
January 2020

Mechanism of biofilm formation on a hydrophobic polytetrafluoroethylene membrane during the purification of surface water using direct contact membrane distillation (DCMD), with especial interest in the feed properties.

Biofouling 2020 01 13;36(1):14-31. Epub 2020 Jan 13.

Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, China.

The impact of feed water quality on biofilm formation during membrane distillation (MD) was investigated in this study, particularly emphasizing the interrelationship between organics, salts, and microbes. Two types of typical natural surface waters in Nanjing, China, were chosen as feed solutions for long-term MD operation, including the Qinhuai River and Xuanwu Lake. The biofilms that developed under different feed water qualities exhibited distinct Foulant compositions and structures, causing different flux decline trends for the MD system. Read More

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http://dx.doi.org/10.1080/08927014.2019.1710136DOI Listing
January 2020

Characterization of the EPS from a thermophilic corrosive consortium.

Biofouling 2019 11 3;35(10):1075-1082. Epub 2020 Jan 3.

Fundación Biociencia, Santiago, Chile.

Biofilm forming microorganisms are known to contribute to the corrosion of metallic materials, as they can attach to surfaces and influence the electrochemical behavior. Extracellular polymeric substances (EPS) produced by these microorganisms play a major role in adhesion and resistance of the biofilm, thus also contributing to corrosion. A better understanding of the composition of EPS could help mitigate the impact of bacterial mediated corrosion. Read More

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http://dx.doi.org/10.1080/08927014.2019.1691171DOI Listing
November 2019

Tryptanthrin, a potential biofilm inhibitor against toxigenic modulating the global quorum sensing regulator, LuxO.

Biofouling 2019 11 11;35(10):1093-1103. Epub 2019 Dec 11.

Cholera and Biofilm Research Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India.

Cholera caused by the Gram-negative bacterium still remains a major health burden in developing countries due to its high transmissibility and multidrug resistance. Alternative strategies are in quest to curtail the disease focusing on antivirulent approaches, such as biofilm inhibition, which make bacteria more susceptible to antibiotic therapies. The biofilm state is important for pathogenesis and its persistence in the environment. Read More

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http://dx.doi.org/10.1080/08927014.2019.1696315DOI Listing
November 2019

Marine bacterial DNase curtails virulence and disrupts biofilms of and nonalbicans species.

Biofouling 2019 10 29;35(9):975-985. Epub 2019 Nov 29.

Biofilm Biology Laboratory, Centre for Research on Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu, India.

is one of the most prevalent fungal pathogens in clinical settings which form antibiotic-resistant biofilms on biomedical devices. Hence, there is a need for non-antimicrobial alternatives to combat these infections. The present study investigates the anti-biofilm effect of marine bacterial DNase by targeting the eDNA present in the biofilms of spp. Read More

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http://dx.doi.org/10.1080/08927014.2019.1680650DOI Listing
October 2019

Bioactive extracts of and thymol inhibit biofilm development by multidrug-resistant extended spectrum β-lactamase producing enteric bacteria.

Biofouling 2019 10 28;35(9):1026-1039. Epub 2019 Nov 28.

Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, India.

The emergence and spread of multidrug-resistant (MDR) pathogenic bacteria is a clinical problem that requires novel anti-infective agents. Targeting pathogenic biofilms is considered a promising strategy to control bacterial infections. In this study, bioactive extracts of were investigated for their anti-biofilm efficacy against extended spectrum β-lactamase (ESβL) producing MDR enteric bacteria. Read More

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http://dx.doi.org/10.1080/08927014.2019.1688305DOI Listing
October 2019
3.415 Impact Factor

assessment of inter-kingdom biofilm formation by bacteria and filamentous fungi isolated from a drinking water distribution system.

Biofouling 2019 11 28;35(10):1041-1054. Epub 2019 Nov 28.

CEB, Centre of Biological Engineering, University of Minho, Braga, Portugal.

The main focus so far in the study of biofilm formation in drinking water has been bacteria. Studies on biofilm formation involving filamentous fungi are, therefore, scarce. This study aimed to assess and characterize the ability of these microorganisms to interact with bacteria whilst forming inter-kingdom biofilms. Read More

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http://dx.doi.org/10.1080/08927014.2019.1688793DOI Listing
November 2019

Detection of microbial colonization of the urinary tract of patients prior to secondary ureterorenoscopy is highly variable between different types of assessment: results of a prospective observational study.

Biofouling 2019 11 27;35(10):1083-1092. Epub 2019 Nov 27.

Department of Urology, Cantonal Hospital St Gallen, Switzerland.

This study compares the findings of different detection methods for microorganisms in patients with ureteral stents undergoing secondary ureterorenoscopy including the use of a novel validated examination pipeline for biofilms on ureteral stents. Of the included 94 patients, 21.3% showed bacteriuria in preoperative urine cultures. Read More

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http://dx.doi.org/10.1080/08927014.2019.1692000DOI Listing
November 2019

Hijacking of immune defences by biofilms: a multifront strategy.

Biofouling 2019 11 25;35(10):1055-1074. Epub 2019 Nov 25.

Laboratorio di Patologia delle Infezioni Associate all'Impianto, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

Biofilm formation by pathogens and opportunistic bacteria is the basis of persistent or recurrent infections. Up to 80% of bacterial infections in humans are associated with biofilms. Despite the efficiency of the evolved and complex human defence system against planktonic bacteria, biofilms are capable of subverting host defences. Read More

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http://dx.doi.org/10.1080/08927014.2019.1689964DOI Listing
November 2019

An ɑ-adrenergic receptor is involved in larval metamorphosis in the mussel, .

Biofouling 2019 10 14;35(9):986-996. Epub 2019 Nov 14.

International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.

Metamorphosis is crucial in the life-cycle transition between the larval and juvenile stages of marine invertebrates. Although a number of agonists and antagonists of the adrenergic receptor (AR) are known to regulate larval metamorphosis in (Mc), the molecular basis of the modulation of larval metamorphosis by the AR gene in this species remains elusive. Herein, the role of the AR gene in larval metamorphosis using the RNA interference technique was examined. Read More

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http://dx.doi.org/10.1080/08927014.2019.1685661DOI Listing
October 2019
3.415 Impact Factor

Copper oxide nanoparticles as an effective anti-biofilm agent against a copper tolerant marine bacterium, .

Biofouling 2019 10 12;35(9):1007-1025. Epub 2019 Nov 12.

Water and Steam Chemistry Division, Bhabha Atomic Research Centre Facilities, Kalpakkam, Tamil Nadu, India.

Biofilm formation on antifouling coatings is a serious concern in seawater cooling systems and the maritime industry. A prolific biofilm forming strain (), possessing high tolerance (>1,000 µg ml) to dissolved copper ions (Cu) was isolated from titanium coupons exposed in the coastal waters of Kalpakkam, east coast of India. formed increased biofilm ( 0. Read More

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http://dx.doi.org/10.1080/08927014.2019.1687689DOI Listing
October 2019

Effects of surface pre-reacted glass-ionomer (S-PRG) eluate on spp.: antifungal activity, anti-biofilm properties, and protective effects on against infection.

Biofouling 2019 10 11;35(9):997-1006. Epub 2019 Nov 11.

Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, UNESP - Univ Estadual Paulista, Sao Jose dos Campos, Brazil.

Surface pre-reacted glass-ionomer (S-PRG) is a bioactive filler produced by PRG technology, which is applied to various dental materials. The inhibitory effects of S-PRG eluate against , the most common fungal oral pathogen, were investigated. Minimum inhibitory concentrations (MIC) and anti-biofilm activities were tested against , , , and . Read More

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http://dx.doi.org/10.1080/08927014.2019.1686485DOI Listing
October 2019

Recoverable impacts of ocean acidification on the tubeworm, : implication for biofouling in future coastal oceans.

Biofouling 2019 09 5;35(8):945-957. Epub 2019 Nov 5.

The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China.

Ocean uptake of anthropogenic CO causes ocean acidification (OA), which not only decreases the calcification rate, but also impairs the formation of calcareous shells or tubes in marine invertebrates such as the dominant biofouling tubeworm species, . This study examined the ability of tubeworms to resume normal tube calcification when returned to ambient pH 8.1 from a projected near-future OA level of pH 7. Read More

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http://dx.doi.org/10.1080/08927014.2019.1673376DOI Listing
September 2019

Magnesium and calcium ions: roles in bacterial cell attachment and biofilm structure maturation.

Biofouling 2019 10 5;35(9):959-974. Epub 2019 Nov 5.

Institute of Food Science and Technology, School of Food and Advanced Technology, Massey University, New Zealand.

The ubiquitous divalent cations magnesium and calcium are important nutrients required by bacteria for growth and cell maintenance. Multi-faceted roles are shown both in bacterial initial attachment and biofilm maturation. The effects of calcium and magnesium can be highlighted in physio-chemical interactions, gene regulation and bio-macromolecular structural modification, which lead to either promotion or inhibition of biofilms. Read More

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http://dx.doi.org/10.1080/08927014.2019.1674811DOI Listing
October 2019

The synergistic effect of enzymatic detergents on biofilm cleaning from different surfaces.

Biofouling 2019 09 30;35(8):883-899. Epub 2019 Oct 30.

School of Chemical Engineering, University of Birmingham, Birmingham, UK.

Biofilm growth is a significant source of contamination in the food industry. Enzymes are considered green countermeasures against biofilm formation in the food industry owing to their biodegradability and low toxicity. In this study, the synergistic effect of enzymes was studied against biofilm cleaning from hard surfaces. Read More

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http://dx.doi.org/10.1080/08927014.2019.1666108DOI Listing
September 2019
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