{"title":"NMR-based metabolomics of <i>Burkholderia pseudomallei</i> biofilms and extracellular polymeric substance cultured in LB and MVBM media.","authors":"Suthantip Srithabut, Pisit Chareonsudjai, Thotsapol Chaianunporn, Chainarong Bunma, Jutarop Phetcharaburanin, Manida Suksawat, Suwalak Chitcharoen, Sorujsiri Chareonsudjai","doi":"10.1080/08927014.2025.2502936","DOIUrl":"https://doi.org/10.1080/08927014.2025.2502936","url":null,"abstract":"<p><p><i>Burkholderia pseudomallei</i> biofilms are resistant to antibiotics and immune responses, leading to persistent infections. This study aimed to investigate the metabolic profiles of <i>B. pseudomallei</i> in biofilms and the extracellular polymeric substances (EPS) produced during grown in LB or MVBM medium using Nuclear Magnetic Resonance (NMR) spectroscopy to identify key metabolites. The results revealed similar biofilm metabolites in both media. However, betaine was detected in LB, but not in the case of MVBM. Acetate was significantly higher in MVBM compared to that of LB. Pathway analysis revealed that betaine-producing <i>B. pseudomallei</i> biofilm in LB was associated with metabolism of glycine, serine, and threonine, while acetate in MVBM was associated with metabolism of taurine and hypotaurine, phosphonate and phosphinate, and glycolysis/gluconeogenesis. The NMR analysis of EPS disclosed shared metabolites including dimethylsulfide, 1-methyluric acid and oxypurinol. This study provides the first extensive investigation into <i>B. pseudomallei</i> biofilm and EPS metabolites, identifying pathways that offer potential targets for combating <i>B. pseudomallei</i> biofilm-associated infections.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-14"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-05-08DOI: 10.1080/08927014.2025.2499107
Suvarna N L Talluri, Daniel Rittschof, Robb M Winter, David R Salem
{"title":"Cyanobacteria fouling in photobioreactors: current status and future perspectives for prevention.","authors":"Suvarna N L Talluri, Daniel Rittschof, Robb M Winter, David R Salem","doi":"10.1080/08927014.2025.2499107","DOIUrl":"https://doi.org/10.1080/08927014.2025.2499107","url":null,"abstract":"<p><p>Cyanobacteria biomass sources have the potential to contribute to the replacement of fossil fuels and to the reduction in global warming by sustainable conversion of atmospheric CO<sub>2</sub> into biofuels and high-value chemicals. Cyanobacteria cultivation in photobioreactors (PBRs) results in biofouling on their transparent inner walls, which reduces photosynthetic efficiency and productivity. While cyanobacteria biofouling in PBRs is recognized as a significant operating challenge, this review draws attention to the lack of studies on antifouling strategies for PBRs involving cyanobacteria and discusses several areas related to cyanobacteria fouling mechanisms on PBR materials, which require further investigation. These include an in-depth analysis of conditioning films, the role of pili and EPS in gliding and adhesion, potential revisions to existing theoretical models for predicting adhesion, and material properties that affect cyanobacteria adhesion. We use knowledge from marine, medical, and industrial biofouling management to help identify strategies to combat cyanobacteria fouling in PBRs, and we review the applicability of various bioinspired physical and chemical strategies, as well as genetic engineering approaches to prevent cyanobacteria biofilm formation in PBRs.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-27"},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143961551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-05-08DOI: 10.1080/08927014.2025.2497295
Nina Čuk, Manca Lunder, Brigita Tomšič, Rok Fink
{"title":"Multi-drug-resistant bacteria on household textiles: characteristics, transmission and low-temperature washing.","authors":"Nina Čuk, Manca Lunder, Brigita Tomšič, Rok Fink","doi":"10.1080/08927014.2025.2497295","DOIUrl":"https://doi.org/10.1080/08927014.2025.2497295","url":null,"abstract":"<p><p>The aim of this study was to analyse how the properties of reference-resistant bacterial strains and textiles affect the transmission of bacteria, the antibacterial potential of detergents and disinfectants and how this can be implemented in low-temperature washing. Bacterial cells were characterised by a hydrophobicity test, and textiles were characterised by roughness and surface energy. Transmission and suspension tests were then carried out, followed by an evaluation of the wash. The results show that cotton has the highest roughness, polyester is the most hydrophobic and MRSA (methicillin-resistant <i>Staphylococcus aureus)</i> is the most hydrophobic bacterium. It was observed that resistant bacteria can be transmitted to a considerable extent via household textiles. The suspension test showed that the 0.5% European Colourfastness Establishment (ECE) reference detergent did not achieve a sufficient reduction (>5 log colony forming units - CFU) for any of the strains tested, whereas the addition of 3% hydrogen peroxide or 4% quaternary ammonium silicone compound did so for all of them. Washing at 60 °C reduced the textile contamination sufficiently (>4 log CFU) for all strains tested, while the criteria for cross-contamination and wash water were not met (<1.1 CFU/mL). However, the addition of disinfectants to the detergent at 30 °C met all hygiene requirements with the complete elimination of all tested bacteria on all textiles. Washing home textiles contaminated with resistant bacteria at low temperatures was only possible if a disinfectant was added. Otherwise, textiles can be an important vehicle for the transmission of resistant bacteria in domestic facilities.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-15"},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-05-07DOI: 10.1080/08927014.2025.2499714
Fatemeh Dadkhah, Javad Aliakbarlu, Hossein Tajik
{"title":"Determining optimum conditions for biofilm formation by <i>Salmonella</i> isolates and anti-biofilm activity of cinnamon essential oil nanoemulsion.","authors":"Fatemeh Dadkhah, Javad Aliakbarlu, Hossein Tajik","doi":"10.1080/08927014.2025.2499714","DOIUrl":"https://doi.org/10.1080/08927014.2025.2499714","url":null,"abstract":"<p><p>This study aimed to determine the optimum conditions for biofilm formation by <i>Salmonella</i> isolates and evaluate the effect of cinnamon essential oil nanoemulsion (CEON) against <i>Salmonella</i> biofilms formed under these conditions. The optimum conditions for biofilm formation by <i>Salmonella</i> serotype Enteritidis and <i>Salmonella</i> serotype Typhimurium were temperatures of 27.3 and 29.7 °C, pH levels of 6.3 and 6.8, and NaCl concentrations of 0.66 and 0.65%, respectively. CEON exhibited a significant inhibitory effect even at low concentrations, with a greater impact on the biofilm of <i>S.</i> Enteritidis compared to <i>S.</i> Typhimurium. The effectiveness of CEON in removing biofilms was increased with higher concentrations and longer contact times, with better results observed at 8 °C compared to 25 °C. In conclusion, CEON demonstrated excellent anti-biofilm activity against <i>S.</i> Enteritidis and <i>S.</i> Typhimurium biofilms, suggesting its potential use as a natural and effective disinfectant in the food industry.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-13"},"PeriodicalIF":2.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-04-01Epub Date: 2025-04-07DOI: 10.1080/08927014.2025.2483739
Ping Xu, Xinyue Chen, Weijin Xi
{"title":"The mechanistic pathways of extracellular polymeric substances in the inhibition of carbon steel corrosion.","authors":"Ping Xu, Xinyue Chen, Weijin Xi","doi":"10.1080/08927014.2025.2483739","DOIUrl":"10.1080/08927014.2025.2483739","url":null,"abstract":"<p><p>This study examined the corrosion inhibition mechanisms of extracellular polymeric substances (EPS) from <i>Lactobacillus reuteri</i>, <i>Pseudomonas fluorescens</i>, and <i>Escherichia coli</i> on carbon steel. Using UV spectrophotometry, LC-MS, infrared spectroscopy, and atomic force microscopy (AFM), it was apparent that all three EPS effectively inhibited corrosion, with optimal concentrations of 300 mg/L for <i>Lactobacillus reuteri</i> and 400 mg/L for the other species, yielding inhibition efficiencies of 28.25%, 23.87%, and 21.72%, respectively. The carboxyl group content was critical, with <i>Lactobacillus reuteri</i> EPS having the highest proportion. Functional group analysis showed it contained 12.39% and 12.93% more carboxyl groups than those from <i>Pseudomonas fluorescens</i> and <i>Escherichia coli</i>. Iron ion adsorption was primarily physical and occurred in a monolayer, with a greater capacity for Fe³<sup>+</sup> than Fe<sup>2+</sup>, peaking at 600 mg/L.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"327-343"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143794654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-04-01Epub Date: 2025-05-06DOI: 10.1080/08927014.2025.2498027
Allanique T Hunter, Aaron J Cogger, Kristyn Boutilier, Kylie H Curnew, Katherine Purvis, Alexis Trevors, Russell C Wyeth
{"title":"Development of marine antifouling performance in hard fouling-release coatings.","authors":"Allanique T Hunter, Aaron J Cogger, Kristyn Boutilier, Kylie H Curnew, Katherine Purvis, Alexis Trevors, Russell C Wyeth","doi":"10.1080/08927014.2025.2498027","DOIUrl":"https://doi.org/10.1080/08927014.2025.2498027","url":null,"abstract":"<p><p>Marine biofouling is a substantial economic and environmental issue. Hard fouling-release coatings present a promising solution, combining fouling-release characteristics with durability. This study tested proprietary hard fouling-release prototype coatings from GIT Coatings, Inc. alongside uncoated controls, colour controls, and commercial performance standards. Three successive experiments were completed, incorporating static and dynamic flow conditions at sites in Nova Scotia, Canada. Initially, biofouling percent cover and cleanability for prototype coatings were comparable to untreated controls. By the final experiment, prototype coatings had significantly lower percent covers than both uncoated controls and the durability performance comparison, Ecospeed. Furthermore, several prototype hard fouling-release coatings had comparable percent cover (and possibly cleanability) to the fouling-release performance comparison, Intersleek. The results indicate that hard fouling-release coatings with potentially greater durability and longevity can achieve similar fouling-release performance as commercial fouling-release coatings. Further tests are needed to determine if unintended toxicity contributes to the antifouling effects.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":"41 4","pages":"429-442"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploring quinazoline-derived copper(I) complex coated intravaginal ring against vulvovaginal candidiasis causing <i>Candida</i> species.","authors":"Dhesiga Krishnan, Sudaarsan Aruna Senthil Kumar, Sowndarya Jothipandiyan, Venkatesan Yamuna Devi, Devarajan Suresh, Paramasivam Nithyanand","doi":"10.1080/08927014.2025.2489479","DOIUrl":"https://doi.org/10.1080/08927014.2025.2489479","url":null,"abstract":"<p><p>Vulvovaginal candidiasis (VVC) is especially prevalent among intrauterine device (IUD) and intravaginal ring (IVR) users. <i>Candida albicans</i> is the leading causative agent of VVC followed by <i>Candida glabrata</i>. Ascribed to the increased drug resistance by <i>Candida</i> spp. to the currently available drugs, this study has focused on the novel quinazoline-derived copper(I) complexes as anti-candida agents. As a novel approach, a vaginal ring was coated with the best quinazoline-derived copper(I) complex, and biofilm disruption ability was evaluated. The coated vaginal ring eradicated 70% of preformed biofilms and also inhibited the hyphal transition of <i>Candida albicans</i> in a simulated vaginal fluid (SVF). The overall study validates the anti-biofilm and anti-virulent properties of the metal complex-coated vaginal ring using various microscopic studies.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":"41 4","pages":"378-393"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-04-01Epub Date: 2025-04-04DOI: 10.1080/08927014.2025.2486250
Érica Rayanne Mota da Costa, Vitória Pessoa de Farias Cabral, Daniel Sampaio Rodrigues, Thais Lima Ferreira, Maria Janielly Castelo Branco Silveira, Leilson Carvalho de Oliveira, Lívia Gurgel do Amaral Valente Sá, Cecília Rocha da Silva, João Batista de Andrade Neto, Sorele Facundo da Silva, Bruno Coêlho Cavalcanti, Manoel Odorico de Moraes, Hélio Vitoriano Nobre Júnior
{"title":"Effect of promethazine against <i>Staphylococcus aureus</i> and its preventive action in the formation of biofilms on silicone catheters.","authors":"Érica Rayanne Mota da Costa, Vitória Pessoa de Farias Cabral, Daniel Sampaio Rodrigues, Thais Lima Ferreira, Maria Janielly Castelo Branco Silveira, Leilson Carvalho de Oliveira, Lívia Gurgel do Amaral Valente Sá, Cecília Rocha da Silva, João Batista de Andrade Neto, Sorele Facundo da Silva, Bruno Coêlho Cavalcanti, Manoel Odorico de Moraes, Hélio Vitoriano Nobre Júnior","doi":"10.1080/08927014.2025.2486250","DOIUrl":"10.1080/08927014.2025.2486250","url":null,"abstract":"<p><p>Urinary infections caused by <i>Staphylococcus aureus</i> are commonly associated with urinary catheterization and often result in severe complications. Given this problem, the objective of the study was to investigate the preventive action of promethazine (PMT) against the formation of methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) biofilms when impregnated in urinary catheters. For this purpose, techniques such as broth microdilution, checkerboard, impregnation on urinary catheter fragments, flow cytometry assays and scanning electron microscopy were employed. PMT exhibited antimicrobial activity with Minimum Inhibitory Concentration (MIC) values ranging from 171 to 256 µg/mL, predominantly additive interaction in combination with oxacillin (OXA) and vancomycin (VAN), and a reduction in cell viability of biofilms formed and forming by methicillin-sensitive and -resistant <i>S. aureus</i>. Morphological alterations, damage to the membrane, and genetic material of cells treated with promethazine were also observed. The results demonstrated that PMT can be classified as a promising antimicrobial agent for use in the antibacterial coating of long-term urinary devices.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"344-361"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-04-01Epub Date: 2025-04-14DOI: 10.1080/08927014.2025.2490748
Yumeng Fu, Jiankun Wang, Xiaoling Wang
{"title":"Simulation of head-tail biofilm streamer growth based on immersed boundary method.","authors":"Yumeng Fu, Jiankun Wang, Xiaoling Wang","doi":"10.1080/08927014.2025.2490748","DOIUrl":"https://doi.org/10.1080/08927014.2025.2490748","url":null,"abstract":"<p><p>Biofilms are subjected to various forces in the fluid field, as a result, the biofilm forms a head-tail structure known as a streamer to reduce pressure differential resistance. To characterize biofilm growth in fluid, we establish a head-tail biofilm streamer growth model based on the immersed boundary method using MATLAB software, and simulate streamer growth in various environmental conditions to explore the factors affecting its growth. Firstly, we found that a higher flow velocity makes the streamer grow faster and thereby produce more biomass. Secondly, we explored the effect of the position of nutrient source on the streamer growth, found that when the nutrient source overlaps with the streamer, its length is longer than when the nutrient source and the streamer are mismatched. Further we found that the Young's modulus of the streamer also influences its growth length. Streamers with small Young's modulus were more likely to deform, making them grow longer than the streamers with large Young's modulus. Finally, we determined the relationship between the tail length and the head diameter of the streamer through mechanical analysis, and found that there is an optimal ratio of the tail length to the head diameter which exposes the streamer to the minimum drag in the fluid field.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":"41 4","pages":"394-406"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BiofoulingPub Date : 2025-04-01Epub Date: 2025-04-30DOI: 10.1080/08927014.2025.2492712
Bruno Nascimento da Silva, Ana Raquel Colares de Andrade, Francisco Eilton Sousa Lopes, Ana Luiza Ribeiro Aguiar, Fernando Victor Monteiro Portela, Maria Laina Silva, Brendda Miranda Vasconcelos, José Júlio Costa Sidrim, Débora Souza Collares Maia Castelo-Branco, Rossana de Aguiar Cordeiro
{"title":"Inhibition of calcineurin as a strategy for biofilm control: <i>Trichosporon</i> spp. as a case study.","authors":"Bruno Nascimento da Silva, Ana Raquel Colares de Andrade, Francisco Eilton Sousa Lopes, Ana Luiza Ribeiro Aguiar, Fernando Victor Monteiro Portela, Maria Laina Silva, Brendda Miranda Vasconcelos, José Júlio Costa Sidrim, Débora Souza Collares Maia Castelo-Branco, Rossana de Aguiar Cordeiro","doi":"10.1080/08927014.2025.2492712","DOIUrl":"https://doi.org/10.1080/08927014.2025.2492712","url":null,"abstract":"<p><p>Among the opportunistic species related to Invasive Fungal Infections (IFIs), <i>Trichosporon</i> spp. are particularly noteworthy, being responsible for infections with high mortality rates in patients with hematological cancers. <i>Trichosporon</i> spp. are intrinsically resistant to echinocandins and their biofilms are tolerant to polyenes and triazoles. This study investigated the effect of calcineurin inhibition on the development and antifungal tolerance of <i>Trichosporon</i> biofilms. Mature biofilms of <i>T. inkin</i> and <i>T. asahii</i> were treated with Ciclosporin A (CsA) and analyzed for biomass reduction and viability, ultrastructure, and tolerance tolerance to antifungals. Molecular docking studies were performed to understand the attachment of CsA to the calcineurin of <i>T. asahii</i>. CsA was able to significantly reduce both the biomass and metabolic activity of biofilms. Mature biofilms formed in the presence of CsA showed greater susceptibility to antifungals, compared to biofilm growth control. CsA caused structural changes in biofilms. Molecular modeling suggested that CsA can block the active site of the calcineurin A subunit of <i>T. asahii</i>. Calcineurin inhibition seems to be a promising strategy for controlling antifungal-resistant fungal biofilms.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":"41 4","pages":"407-418"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}