Biofouling最新文献

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Carbon dioxide infusion reduces invasive mussel biofouling (quagga mussel; Dreissena rostriformis bugensis) in raw water systems.
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-25 DOI: 10.1080/08927014.2025.2468282
Matthew T Barbour, Todd J Severson, Jeremy K Wise, Matthew J Muelemans, Kevin Kelly, Sherri Pucherelli, Diane L Waller
{"title":"Carbon dioxide infusion reduces invasive mussel biofouling (quagga mussel; <i>Dreissena rostriformis bugensis</i>) in raw water systems.","authors":"Matthew T Barbour, Todd J Severson, Jeremy K Wise, Matthew J Muelemans, Kevin Kelly, Sherri Pucherelli, Diane L Waller","doi":"10.1080/08927014.2025.2468282","DOIUrl":"https://doi.org/10.1080/08927014.2025.2468282","url":null,"abstract":"<p><p>The efficacy of carbon dioxide (CO<sub>2</sub>) to reduce biofouling by quagga mussels (<i>Dreissena rostriformis bugensis</i>) in raw water systems was investigated. Experiments were conducted in a mobile laboratory located at Bureau of Reclamation Davis Dam Hydropower Facility and supplied with raw water from Lake Mohave, a reservoir of the Colorado River, USA. Incoming water was split between five chambers, each infused with CO<sub>2</sub> at a different rate. Raw reservoir water containing quagga larvae (veligers) was mixed with CO<sub>2</sub> chamber outflows and delivered to tanks containing settlement plates. Two experiments were conducted. Experiment 1 tested continuous infusion at target concentrations of 30, 45, 60, 75, and 100 mg L<sup>-1</sup> dCO<sub>2</sub> (dissolved CO<sub>2</sub>). Experiment 2 evaluated intermittent infusion schedules: 24 h on/off with 50, 75, and 100 mg L<sup>-1</sup> dCO<sub>2</sub> and 24 h once/week with 100 mg L<sup>-1</sup> dCO<sub>2</sub>. In Experiment 1, the percent settlement decreased with mean CO<sub>2</sub> concentration, ranging from 5.0% to < 0.1% in 28.7 and 92.2 mg L<sup>-1</sup> dCO<sub>2</sub>, respectively. In Experiment 2, the efficacy of 24 h on/off at dCO<sub>2</sub> > 72.2 mg L<sup>-1</sup> was similar to continuous treatment. The least effective treatment was 24 h once weekly at 95 mg L<sup>-1</sup> dCO<sub>2</sub>. These results demonstrate that CO<sub>2</sub> treatment may reduce mussel biofouling in raw water systems.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-12"},"PeriodicalIF":2.6,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490576","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}
引用次数: 0
Effects of epigallocatechin gallate on the development of matrix-rich Streptococcus mutans biofilm. 表没食子儿茶素没食子酸酯对富基质变形链球菌生物膜发育的影响。
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-01-02 DOI: 10.1080/08927014.2024.2446932
Maria Gerusa Brito Aragão, Carolina Patricia Aires, Silmara Aparecida Milori Corona, Xuesong He
{"title":"Effects of epigallocatechin gallate on the development of matrix-rich <i>Streptococcus mutans</i> biofilm.","authors":"Maria Gerusa Brito Aragão, Carolina Patricia Aires, Silmara Aparecida Milori Corona, Xuesong He","doi":"10.1080/08927014.2024.2446932","DOIUrl":"10.1080/08927014.2024.2446932","url":null,"abstract":"<p><p>In this study, we evaluated the impact of Epigalocatechin-3-gallate (EGCG) on <i>S. mutans</i> biofilm development for 24 and 46 h using high-resolution confocal laser scanning microscopy. EGCG treatment led to the formation of interspaced exopolysaccharide (EPS)-microcolony complexes unevenly distributed on the surface of hydroxyapatite disc, forming a thinner and less complex biofilm structure with significantly reduced biomass, matrix volume, and thickness compared to the NaCl treated group (negative control). At 46 h, the biofilm of the EGCG-treatment group failed to form the bacterial-EPS superstructures which is characteristic of the biofilm in the negative control group. EGCG treatment seems to significantly delay biofilm development, with the 46 h biofilm in the EGCG treatment group resembling the negative control group at 24 h. EGCG topical treatments impaired <i>S. mutans</i> biofilm initial growth and maturation, suggesting its potential to be used as a preventive agent against dental caries.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"171-180"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913804","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}
引用次数: 0
Anti-biofilm effect of ferulic acid against Enterobacter hormaechei and Klebsiella pneumoniae: in vitro and in silico investigation. 阿魏酸对霍氏肠杆菌和肺炎克雷伯菌的抗生物膜作用:体外和计算机实验研究。
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-01-05 DOI: 10.1080/08927014.2024.2446927
Parvathi Vaikkathillam, Minsa Mini, Aparna Mohan, Devi Jayakumar, Pooja P Rajan, Sneha Asha, Praveen Kumar
{"title":"Anti-biofilm effect of ferulic acid against <i>Enterobacter hormaechei</i> and <i>Klebsiella pneumoniae</i>: <i>in vitro</i> and <i>in silico</i> investigation.","authors":"Parvathi Vaikkathillam, Minsa Mini, Aparna Mohan, Devi Jayakumar, Pooja P Rajan, Sneha Asha, Praveen Kumar","doi":"10.1080/08927014.2024.2446927","DOIUrl":"10.1080/08927014.2024.2446927","url":null,"abstract":"<p><p><i>Enterobacter hormaechei</i> and <i>Klebsiella pneumoniae</i>, key members of the ESKAPE group of hospital-acquired pathogens, are driving forces behind numerous infections due to their potent biofilm formation and the growing threat of antimicrobial resistance. Ferulic acid (FA) is known for its strong antioxidant properties and is recognized for its numerous physiological benefits, including anti-inflammatory, antimicrobial, anticancer, and antidiabetic effects. The current investigation delves into the antimicrobial and antibiofilm ability of FA against <i>E. hormaechei</i> and <i>K. pneumoniae</i>. Using different assays, we confirmed that FA inhibits the biofilm formation of these pathogens. Through computational studies involving molecular docking and molecular dynamics simulations, it was found that FA exhibits a strong affinity for binding with MrkB in <i>E. hormaechei</i> and MrkH in <i>K. pneumoniae</i>, crucial proteins involved in biofilm formation. We hypothesise that FA might interfere with adhesion-associated molecules and inhibit biofilms through the c-di-GMP pathway and proves as an effective antibiofilm compound.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"157-170"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930536","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}
引用次数: 0
In vitro study of essential oils encapsulated in chitosan microparticles against Histoplasma capsulatum and their pathogenicity in Caenorhabditis elegans.
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-02-06 DOI: 10.1080/08927014.2025.2453184
Anderson da Cunha Costa, Mirele Rodrigues Fernandes, Augusto Feynman Dias Nobre, Maria Gleiciane Rocha, Jacó Ricarte Lima de Mesquita, Rosemeyre Souza Freire, Andre Jalles Monteiro, Rodrigo Silveira Vieira, Raimunda Sâmia Nogueira Brilhante
{"title":"<i>In vitro</i> study of essential oils encapsulated in chitosan microparticles against <i>Histoplasma capsulatum</i> and their pathogenicity in <i>Caenorhabditis elegans</i>.","authors":"Anderson da Cunha Costa, Mirele Rodrigues Fernandes, Augusto Feynman Dias Nobre, Maria Gleiciane Rocha, Jacó Ricarte Lima de Mesquita, Rosemeyre Souza Freire, Andre Jalles Monteiro, Rodrigo Silveira Vieira, Raimunda Sâmia Nogueira Brilhante","doi":"10.1080/08927014.2025.2453184","DOIUrl":"10.1080/08927014.2025.2453184","url":null,"abstract":"<p><p>Histoplasmosis, caused by <i>Histoplasma capsulatum</i>, poses risks for immunocompromised individuals. With limited therapeutic options, this study explores microparticles as antimicrobial delivery systems for <i>Cymbopogon flexuosus</i> and <i>Pelargonium graveolens</i> essential oils against <i>H. capsulatum</i>. The broth microdilution assay showed MICs of 32 to 128 µg/mL in filamentous phase and 8 to 64 µg/mL in yeast phase. Combining microparticles with antifungal drugs demonstrated synergistic effects in both filamentous and yeast-like forms with amphotericin B or itraconazole. Chitosan microparticles reduced <i>H. capsulatum</i> biofilm biomass and metabolic activity by about 60% at 512 µg/mL. <i>In vivo</i> evaluation with <i>Caenorhabditis elegans</i> showed <i>H. capsulatum</i> caused over 90% mortality. These findings highlight the potential use of chitosan microparticles as a delivery system for essential oils against <i>H. capsulatum</i>, especially in combination with other compounds.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"181-196"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143254552","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}
引用次数: 0
Ozonized water as a promising strategy to remove biofilm formed by Pseudomonas spp. on polyethylene and polystyrene surfaces.
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-01-23 DOI: 10.1080/08927014.2024.2444387
Tatiane Marques Santos, Maria Eduarda Teixeira Lopes, Ernandes Rodrigues de Alencar, Marcus Vinícius de Assis Silva, Solimar Gonçalves Machado
{"title":"Ozonized water as a promising strategy to remove biofilm formed by <i>Pseudomonas</i> spp. on polyethylene and polystyrene surfaces.","authors":"Tatiane Marques Santos, Maria Eduarda Teixeira Lopes, Ernandes Rodrigues de Alencar, Marcus Vinícius de Assis Silva, Solimar Gonçalves Machado","doi":"10.1080/08927014.2024.2444387","DOIUrl":"10.1080/08927014.2024.2444387","url":null,"abstract":"<p><p>The dairy industry faces challenges in controlling spoilage microorganisms, particularly <i>Pseudomonas</i>, known to form resilient biofilms. Conventional disinfection methods have limitations, prompting the exploration of eco-friendly alternatives like ozone. This study focused on <i>Pseudomonas</i> biofilms on polystyrene and polyethylene surfaces, evaluating ozone efficacy when incorporated into different water sources and applied under static and dynamic conditions. Biofilm formation and removal were assessed with conventional microbiological and microscopic techniques. Despite variations in physicochemical properties, ozonized water from different sources showed similar effectiveness in removing <i>Pseudomonas</i> biofilms. Dynamic ozone application was more efficient, achieving a 2.35 log CFU/coupon reduction on polyethylene surfaces, compared to a 1.05 log CFU/coupon reduction under static conditions. These findings highlight the potential of ozonized water for removing <i>Pseudomonas</i> biofilms, especially under dynamic application. This eco-friendly approach could serve as an effective strategy to mitigate biofilm-related challenges in the dairy industry.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"144-156"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143021736","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}
引用次数: 0
Thiosemicarbazones and analogues as potential biofilm inhibitors of Candida albicans.
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-02-05 DOI: 10.1080/08927014.2025.2457151
Carolina do Rosário Esteves Guimarães, Danilo Santana Galvão, Silvio do Desterro Cunha, Humberto Fonseca de Freitas, Tânia Fraga Barros
{"title":"Thiosemicarbazones and analogues as potential biofilm inhibitors of <i>Candida albicans</i>.","authors":"Carolina do Rosário Esteves Guimarães, Danilo Santana Galvão, Silvio do Desterro Cunha, Humberto Fonseca de Freitas, Tânia Fraga Barros","doi":"10.1080/08927014.2025.2457151","DOIUrl":"10.1080/08927014.2025.2457151","url":null,"abstract":"<p><p>Biofilms are a virulence factor for <i>Candida albicans</i>, a common pathogen in human fungal infections, making them resistant to many commercial antifungals. Therefore, the discovery of compounds that inhibit and eradicate biofilms is a priority. As thiosemicarbazones have had their effect on <i>Candida</i> biofilms little explored, this study investigated the inhibitory and eradication activity of 30 thiosemicarbazones and analogues against <i>C. albicans</i> biofilms. After initial screening, four compounds were selected and compound 28 emerged as the most potent with BIC<sub>50</sub> at 31.55 ± 1.18 µM. By scanning electron microscopy analysis, blastoconidia adhered to the reduced surface and reduced formation of pseudohyphae and hyphae was revealed. Despite the inhibitory activity, the four compounds failed to eradicate the biofilm by more than 50%. Thus, the results suggest that the compounds evaluated are very promising for the development of effective antibiofilm compounds and open up new perspectives for elucidating the mechanism of action.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"197-210"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187916","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}
引用次数: 0
Exploring the potential of hydrolytic enzymes combined with antibacterial agents to disrupt pathogenic biofilms and disinfect released cells. 探索水解酶与抗菌剂联合破坏病原生物膜和消毒释放细胞的潜力。
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-01-05 DOI: 10.1080/08927014.2024.2435018
Patricia Palafox-Rivera, Melvin R Tapia-Rodriguez, Julio Cesar Lopez-Romero, Marco A Lugo-Flores, Karen P Quintero-Cabello, Brenda A Silva-Espinoza, M Reynaldo Cruz-Valenzuela, Filomena Nazzaro, J Fernando Ayala-Zavala
{"title":"Exploring the potential of hydrolytic enzymes combined with antibacterial agents to disrupt pathogenic biofilms and disinfect released cells.","authors":"Patricia Palafox-Rivera, Melvin R Tapia-Rodriguez, Julio Cesar Lopez-Romero, Marco A Lugo-Flores, Karen P Quintero-Cabello, Brenda A Silva-Espinoza, M Reynaldo Cruz-Valenzuela, Filomena Nazzaro, J Fernando Ayala-Zavala","doi":"10.1080/08927014.2024.2435018","DOIUrl":"10.1080/08927014.2024.2435018","url":null,"abstract":"<p><p>Biofilms are bacterial communities encapsulated in a self-produced extracellular polymeric matrix comprising carbohydrates, proteins, lipids, and DNA. This matrix provides structural integrity while significantly enhancing bacterial antibiotic resistance, presenting substantial disinfection challenges. The persistence of biofilm-associated infections and foodborne outbreaks underscores the need for more effective disinfection strategies. Conventional antibacterial agents often are less effective against biofilm-protected cells compared to their efficacy against planktonic (non-attached) bacteria. Integrating hydrolytic enzymes, such as cellulases, proteases, and DNases, into disinfection protocols offers a promising approach by breaking down the biofilm matrix to expose the bacteria. However, the follow-up use of antibacterial agents is important, as enzymes alone do not possess bactericidal properties. Unlike traditional disinfectants, natural antibacterial agents work synergistically with enzymes, enhancing biofilm disruption without compromising the enzymatic activity through oxidation. This review offers a comprehensive analysis of the current knowledge and potential of combining hydrolytic enzymes with disinfectants to disrupt biofilms and eradicate the released bacterial cells, emphasizing applications for clinical and foodborne pathogens.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"131-143"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930461","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}
引用次数: 0
Antibacterial and antibiofilm efficacy of quercetin against Pseudomonas aeruginosa and methicillin resistant Staphylococcus aureus associated with ICU infections.
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-02-01 Epub Date: 2025-02-05 DOI: 10.1080/08927014.2025.2460491
Kalidass Vijayakumar, Vinitha Ganesan, Suganya Kannan
{"title":"Antibacterial and antibiofilm efficacy of quercetin against <i>Pseudomonas aeruginosa</i> and methicillin resistant <i>Staphylococcus aureus</i> associated with ICU infections.","authors":"Kalidass Vijayakumar, Vinitha Ganesan, Suganya Kannan","doi":"10.1080/08927014.2025.2460491","DOIUrl":"10.1080/08927014.2025.2460491","url":null,"abstract":"<p><p>Infections caused by multidrug-resistant pathogens, particularly in ICU settings, pose significant health risks globally. <i>Pseudomonas aeruginosa</i> (PA) and methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) are prominent nosocomial pathogens among the ESKAPE group, known for their resistance mechanisms such as biofilm formation and quorum sensing. Quercetin, a flavonoid found in fruits and vegetables, exhibits diverse pharmacological properties, including antimicrobial activity. This study evaluated quercetin's efficacy against PA and MRSA through <i>in vitro</i> and <i>in vivo</i> experiments. Minimum Inhibitory Concentration (MIC) assays showed MIC values of 158 µg mL<sup>-1</sup> for PA and 176 µg mL<sup>-1</sup> for MRSA. Quercetin inhibited PA's swarming motility at concentrations as low as 39.5 µg mL<sup>-1</sup> and reduced MRSA viability in serum by up to 79%. Quercetin treatment significantly reduced biofilm formation by both pathogens, with <i>Pseudomonas aeruginosa</i> showing biomass reductions of 23% at 1/4 MIC (39.5 µg mL<sup>-1</sup>) and 48% at 1/2 MIC, while methicillin-resistant <i>Staphylococcus aureus</i> exhibited reductions of 27% at 1/4 MIC and 53% at 1/2 MIC compared to the control. High-content fluorescence imaging demonstrated quercetin's ability to disrupt biofilm structure and viability. Moreover, quercetin suppressed EPS production and protease activity in both PA and MRSA, alongside downregulating virulence-related genes involved in quorum sensing and toxin production. <i>In vivo</i> studies using <i>Caenorhabditis elegans</i> confirmed quercetin's ability to reduce bacterial adherence and colonization. These findings underscore quercetin's potential as a therapeutic agent against multidrug-resistant pathogens in ICU settings, warranting further exploration for clinical applications.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"211-224"},"PeriodicalIF":2.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187979","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}
引用次数: 0
Anti-biofouling marine diterpenoids from Okinawan soft corals. 冲绳软珊瑚中抗生物污染的海洋二萜。
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-01-02 DOI: 10.1080/08927014.2024.2443029
Shinnosuke Ishigami, Ryoma Nakagawa, Fumiya Yagi, Hikaru Takada, Ayano Suzuki, Takashi Kamada, Kazumi Nimura, Iori Oshima, Chin-Soon Phan, Takahiro Ishii
{"title":"Anti-biofouling marine diterpenoids from Okinawan soft corals.","authors":"Shinnosuke Ishigami, Ryoma Nakagawa, Fumiya Yagi, Hikaru Takada, Ayano Suzuki, Takashi Kamada, Kazumi Nimura, Iori Oshima, Chin-Soon Phan, Takahiro Ishii","doi":"10.1080/08927014.2024.2443029","DOIUrl":"https://doi.org/10.1080/08927014.2024.2443029","url":null,"abstract":"<p><p>Soft corals produce a diverse range of natural products with pharmaceutical potential, such as antiproliferative and anti-inflammatory effects. The Alcyoniidae family, particularly the genera <i>Sarcophyton</i> and <i>Sinularia</i>, is rich in bioactive terpenoids. However, despite extensive research, their anti-biofouling properties against the mussel <i>Mytilus galloprovincialis</i> remain underexplored. This study investigates these compounds as potential eco-friendly antifouling agents. A new cembrane-type diterpenoid, 11,12-epoxycembrene A (<b>1</b>), and 15 known compounds were isolated from three soft corals distributed in Okinawa, Japan. The chemical structures of these secondary metabolites were elucidated based on spectroscopic analysis. Moreover, an anti-biofouling assay of potential anti-biofouling agents against <i>M. galloprovincialis</i> was performed and their toxicities were assessed by means of the brine shrimp mortality test. In conclusion, this study identifies new and known bioactive compounds from soft corals, introduces an improved anti-biofouling assay, and highlights the potential of dimethylamine-containing diterpenes as environmentally friendly antifouling agents.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-10"},"PeriodicalIF":2.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913803","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}
引用次数: 0
Inhibition of Salmonella Typhimurium biofilm and polysaccharide production via eugenol-glucosyltransferase interactions. 通过丁香酚-葡萄糖基转移酶相互作用抑制鼠伤寒沙门菌生物膜和多糖生产。
IF 2.6 3区 生物学
Biofouling Pub Date : 2025-01-02 DOI: 10.1080/08927014.2024.2446928
Julian Javier Palomares-Navarro, Ariadna Thalia Bernal-Mercado, Cristóbal Joel González-Pérez, Miguel Angel Martínez-Tellez, Gustavo Adolfo Gonzalez-Aguilar, Luis Alberto Ortega-Ramirez, Jesus Fernando Ayala-Zavala
{"title":"Inhibition of <i>Salmonella</i> Typhimurium biofilm and polysaccharide production via eugenol-glucosyltransferase interactions.","authors":"Julian Javier Palomares-Navarro, Ariadna Thalia Bernal-Mercado, Cristóbal Joel González-Pérez, Miguel Angel Martínez-Tellez, Gustavo Adolfo Gonzalez-Aguilar, Luis Alberto Ortega-Ramirez, Jesus Fernando Ayala-Zavala","doi":"10.1080/08927014.2024.2446928","DOIUrl":"https://doi.org/10.1080/08927014.2024.2446928","url":null,"abstract":"<p><p>This study hypothesizes that eugenol, due to its structural properties, can inhibit glucosyltransferase activity, thereby reducing polysaccharide synthesis in <i>Salmonella</i> Typhimurium biofilms. It was found that eugenol exhibited minimum inhibitory and bactericidal concentrations of 0.6 mg mL<sup>-1</sup> and 0.8 mg mL<sup>-1</sup>, respectively, against planktonic <i>S.</i> Typhimurium growth. It also demonstrated minimum biofilm eradication and inhibition concentrations of 1.8 mg mL<sup>-1</sup> and 0.7 mg mL<sup>-1</sup>, respectively. At 0.3 mg mL<sup>-1</sup>, eugenol reduced biofilm formation and affected polysaccharide production. Moreover, eugenol reduced glucosyltransferase activity. Computational analysis indicated strong interactions between eugenol and the enzyme's active site residues with affinity energy -8.5 kcal mol<sup>-1</sup>. Real-time PCR revealed a significant increase in <i>bcsA</i> gene expression in the presence of eugenol. These findings suggest that eugenol's ability to inhibit glucosyltransferase activity effectively reduces biofilm formation and polysaccharide content.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":" ","pages":"1-18"},"PeriodicalIF":2.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913805","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}
引用次数: 0
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