Biofouling最新文献

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β-Estradiol and progesterone enhance biofilm development and persister cell formation in monospecies and microcosms biofilms derived from vulvovaginal candidiasis. β-雌二醇和黄体酮可促进外阴阴道念珠菌病单种和微种生物膜中生物膜的发育和持久细胞的形成。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-08-01 Epub Date: 2023-09-12 DOI: 10.1080/08927014.2023.2256674
Ana Raquel Colares de Andrade, Mônica Dantas Sampaio Rezende, Fernando Victor Monteiro Portela, Livia Maria Galdino Pereira, Bruno Nascimento da Silva, Reginaldo Gonçalves de Lima-Neto, Marcos Fábio Gadelha Rocha, José Júlio Costa Sidrim, Débora Souza Collares Maia Castelo-Branco, Rossana de Aguiar Cordeiro
{"title":"β-Estradiol and progesterone enhance biofilm development and persister cell formation in monospecies and microcosms biofilms derived from vulvovaginal candidiasis.","authors":"Ana Raquel Colares de Andrade,&nbsp;Mônica Dantas Sampaio Rezende,&nbsp;Fernando Victor Monteiro Portela,&nbsp;Livia Maria Galdino Pereira,&nbsp;Bruno Nascimento da Silva,&nbsp;Reginaldo Gonçalves de Lima-Neto,&nbsp;Marcos Fábio Gadelha Rocha,&nbsp;José Júlio Costa Sidrim,&nbsp;Débora Souza Collares Maia Castelo-Branco,&nbsp;Rossana de Aguiar Cordeiro","doi":"10.1080/08927014.2023.2256674","DOIUrl":"10.1080/08927014.2023.2256674","url":null,"abstract":"<p><p>The present study aimed to: (1) evaluate the influence of the steroid hormones (SH) on biofilm development; (2) investigate the formation of persister cells (PC) in biofilms; and (3) investigate the influence of SH on PC formation. Biofilms were derived from vulvovaginal candidiasis (VVC) samples and evaluated by three models: microcosm biofilms grown in Vaginal Fluid Simulator Medium (MiB-VFSM); monospecies biofilms grown in VFSM (MoB-VFSM) and RPMI media (MoB-RPMI). SH altered cell counting and biomass of biofilms grown in VSFM; MoB-RPMI were negatively affected by SH. SH stimulated the formation of PC in MiB-VFSM but not MoB-VFSM; MoB-RPMI showed a lower number of PC in the presence of SH. The results showed that SH altered the dynamics of biofilm formation and development, depending on the study model. The data suggest the influence of hormones on the physiology of <i>Candida</i> biofilms and reinforce the importance of PC in the pathogenesis of VVC.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10214413","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
United we stand, divided we fall: in-depth proteomic evaluation of the synergistic effect of Mo-CBP3-PepI and Ciprofloxacin against Staphylococcus aureus biofilms. 合则存,分则亡:Mo-CBP3-PepI与环丙沙星对金黄色葡萄球菌生物膜协同作用的深入蛋白质组学评价
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-08-01 Epub Date: 2023-11-20 DOI: 10.1080/08927014.2023.2279992
Nilton A S Neto, Tawanny K B Aguiar, Rayara J P Costa, Felipe P Mesquita, Lais L B de Oliveira, Maria E A de Moraes, Raquel C Montenegro, Rômulo F Carneiro, Celso S Nagano, Cleverson D T Freitas, Pedro F N Souza
{"title":"United we stand, divided we fall: in-depth proteomic evaluation of the synergistic effect of <i>Mo</i>-CBP<sub>3</sub>-PepI and Ciprofloxacin against <i>Staphylococcus aureus</i> biofilms.","authors":"Nilton A S Neto, Tawanny K B Aguiar, Rayara J P Costa, Felipe P Mesquita, Lais L B de Oliveira, Maria E A de Moraes, Raquel C Montenegro, Rômulo F Carneiro, Celso S Nagano, Cleverson D T Freitas, Pedro F N Souza","doi":"10.1080/08927014.2023.2279992","DOIUrl":"10.1080/08927014.2023.2279992","url":null,"abstract":"<p><p><i>Staphylococcus aureus</i> forms biofilms, a structure that protects bacterial cells, conferring more resistance to difficult treatment. Synthetic peptides surge as an alternative to overcome the biofilm of multidrug-resistant pathogens. <i>Mo</i>-CBP<sub>3</sub>-PepI, when combined with Ciprofloxacin, reduced preformed <i>S. aureus</i> biofilm by 50% at low concentrations (0.2 and 6.2 μg. mL<sup>-1</sup>, respectively). The goal of this study was to evaluate the proteomic profile of biofilms after treatment with the <i>Mo</i>-CBP<sub>3</sub>-PepI combined with ciprofloxacin. Here, proteomic analysis confirmed with more depth previously described mechanisms and revealed changes in the accumulation of proteins related to DNA and protein metabolism, cell wall biosynthesis, redox metabolism, <i>quorum</i> sensing, and biofilm formation. Some proteins related to DNA and protein metabolism were reduced, while other proteins, like redox system proteins, disappeared in Ciprofloxacin+<i>Mo</i>-CBP<sub>3</sub>-PepI treatment. Our results indicated a synergistic effect of these two molecules with several mechanisms against <i>S. aureus</i> biofilm and opened new doors for combined treatments with other drugs.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89716834","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
Neem oil against Aeromonas hydrophila infection by disrupting quorum sensing and biofilm formation. 印度楝油通过破坏群体感应和生物膜形成来对抗嗜水气单胞菌感染。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-08-01 Epub Date: 2023-11-20 DOI: 10.1080/08927014.2023.2279998
Shengping Li, Qiuhong Yang, Bo Cheng, Yongtao Liu, Shun Zhou, Xiaohui Ai, Jing Dong
{"title":"Neem oil against <i>Aeromonas hydrophila</i> infection by disrupting quorum sensing and biofilm formation.","authors":"Shengping Li, Qiuhong Yang, Bo Cheng, Yongtao Liu, Shun Zhou, Xiaohui Ai, Jing Dong","doi":"10.1080/08927014.2023.2279998","DOIUrl":"10.1080/08927014.2023.2279998","url":null,"abstract":"<p><p><i>Aeromonas hydrophila</i> is an opportunistic pathogen that can cause a number of infectious diseases in fish and is widely distributed in aquatic environments. Antibiotics are the main approach against <i>A. hydrophila</i> infections, while the emergence of resistant bacteria limits the application of antibiotics. Here, quorum-sensing (QS) was defined as the target and the inhibitory effects of neem oil against QS of <i>A. hydrophila</i> was studied. The results showed that neem oil could dose-dependently reduce aerolysin, protease, lipase, acyl-homoserine lactones (AHLs), biofilm and swarming motility at sub-inhibitory concentrations. Results of real-time PCR demonstrated that neem oil could down-regulate the transcription of <i>aerA</i>, <i>ahyI</i> and <i>ahyR</i>. Moreover, neem oil showed significant protections to A549 cells and a fish infection model. Taken together, these results indicated that neem oil could be chosen as a promising candidate for the treatment of <i>A. hydrophila</i> infections.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134648412","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
Selected antimicrobial essential oils to eradicate multi-drug resistant bacterial biofilms involved in human nosocomial infections. 精选抗微生物精油,根除与人类医院感染有关的耐多药细菌生物膜。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-08-01 Epub Date: 2023-11-20 DOI: 10.1080/08927014.2023.2269551
Widad Bouguenoun, Fethi Benbelaid, Salsabil Mebarki, Imane Bouguenoun, Sara Boulmaiz, Abdelmonaim Khadir, Mohammed Yassine Benziane, Mourad Bendahou, Alain Muselli
{"title":"Selected antimicrobial essential oils to eradicate multi-drug resistant bacterial biofilms involved in human nosocomial infections.","authors":"Widad Bouguenoun, Fethi Benbelaid, Salsabil Mebarki, Imane Bouguenoun, Sara Boulmaiz, Abdelmonaim Khadir, Mohammed Yassine Benziane, Mourad Bendahou, Alain Muselli","doi":"10.1080/08927014.2023.2269551","DOIUrl":"10.1080/08927014.2023.2269551","url":null,"abstract":"<p><p>Biofilms are the primary source of contamination linked to nosocomial infections by promoting bacterial resistance to antimicrobial agents, including disinfectants. Using essential oils, this study aims to inhibit and eradicate the biofilm of enterobacteria and staphylococci responsible for nosocomial infections at Guelma Hospital, northeastern Algeria. <i>Thymbra capitata</i>, <i>Thymus pallescens</i> and <i>Artemesia herba-alba</i> essential oils were evaluated against clinical strains of <i>Klebsiella pneumoniae</i>, <i>Escherichia coli</i>, and <i>Staphylococcus aureus</i>. The antimicrobial activity of the essential oils under consideration was assessed using an agar disc diffusion assay and the determination of minimum inhibitory concentrations (MICs). In addition, the crystal violet method and scanning electron microscopy (SEM) evaluated biofilm inhibition and eradication by those antimicrobial agents. The results indicate that <i>T. pallescens</i> essential oil was the most effective antimicrobial agent against pathogenic bacteria, with large zones of inhibition (up to 50 mm against <i>S. aureus</i>), low MICs (0.16 to 0.63 mg/mL), and powerful biofilm eradication up to 0.16 mg/mL in both 24 h and 60-min exposure times. Thus, Algerian thyme and oregano could be used in various ways to combat the biofilm that causes nosocomial infection in local hospitals.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49688550","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
Sonophotodynamic inactivation of Pseudomonas aeruginosa biofilm mediated by curcumin. 姜黄素介导的声光动力灭活铜绿假单胞菌生物膜。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-05-01 Epub Date: 2023-08-03 DOI: 10.1080/08927014.2023.2241385
Iago Silva E Carvalho, Sebastião Pratavieira, Vanderlei Salvador Bagnato, Fernanda Alves
{"title":"Sonophotodynamic inactivation of <i>Pseudomonas aeruginosa</i> biofilm mediated by curcumin.","authors":"Iago Silva E Carvalho,&nbsp;Sebastião Pratavieira,&nbsp;Vanderlei Salvador Bagnato,&nbsp;Fernanda Alves","doi":"10.1080/08927014.2023.2241385","DOIUrl":"10.1080/08927014.2023.2241385","url":null,"abstract":"<p><p>The inactivation of <i>Pseudomonas aeruginosa</i> biofilm is a major challenge, as biofilms are less responsive to conventional treatments and responsible for persistent infections. This has led to the investigation of alternative approaches for biofilm control such as photodynamic (PDI) and sonodynamic (SDI) inactivation. The combination of them, known as Sonophotodynamic Inactivation (SPDI), has improved the effectiveness of the process. Curcumin, a well-established photosensitizer, has been identified as a potential sonosensitizer. This study evaluated the most effective combination for SPDI against <i>P. aeruginosa</i> biofilms <i>in vitro</i>, varying curcumin concentrations and ultrasound intensities. The results indicated that the inactivation was directly proportional to the curcumin concentration. Using curcumin 120 µM and 3.0 W.cm<sup>-2</sup> of ultrasound intensity, SPDI demonstrated the highest and the best synergistic results, equivalent to 6.9 ± 2.1 logs of reduction. PDI reduced 0.7 ± 0.9 log and SDI had no effect. In conclusion, SPDI with curcumin is a promising approach for biofilm inactivation.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10177145","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
Evaluation of lipophosphoramidates-based amphiphilic compounds on the formation of biofilms of marine bacteria. 基于脂磷酰胺的两亲性化合物对海洋细菌生物膜形成的评价。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-05-01 Epub Date: 2023-08-16 DOI: 10.1080/08927014.2023.2241377
Dorsaf Malouch, Mathieu Berchel, Catherine Dreanno, Sabine Stachowski-Haberkorn, Morgane Chalopin, Yoann Godfrin, Paul-Alain Jaffrès
{"title":"Evaluation of lipophosphoramidates-based amphiphilic compounds on the formation of biofilms of marine bacteria.","authors":"Dorsaf Malouch,&nbsp;Mathieu Berchel,&nbsp;Catherine Dreanno,&nbsp;Sabine Stachowski-Haberkorn,&nbsp;Morgane Chalopin,&nbsp;Yoann Godfrin,&nbsp;Paul-Alain Jaffrès","doi":"10.1080/08927014.2023.2241377","DOIUrl":"10.1080/08927014.2023.2241377","url":null,"abstract":"<p><p>The bacteriostatic and/or bactericidal properties of few phosphoramide-based amphiphilic compounds on human pathogenic bacteria were previously reported. In this study, the potential of two cationic (<b>BSV36</b> and <b>KLN47</b>) and two zwitterionic (<b>3</b> and <b>4</b>) amphiphiles as inhibitors of marine bacterial growth and biofilm formation were investigated. Results showed that the four compounds have little impact on the growth of a panel of 18 selected marine bacteria at a concentration of 200 µM, and up to 700 µM for some bacterial strains. Interestingly, cationic lipid <b>BSV36</b> and zwitterionic lipids <b>3</b> and <b>4</b> effectively disrupt biofilm formation of <i>Paracoccus</i> sp. 4M6 and <i>Vibrio</i> sp. D02 at 200 µM and to a lesser extent of seven other bacterial strains tested. Moreover, ecotoxicological assays on four species of microalgae highlighted that compounds <b>3</b> and <b>4</b> have little impact on microalgae growth with EC50 values of 51 µM for the more sensitive species and up to 200 µM for most of the others. Amphiphilic compounds, especially zwitterionic amphiphiles <b>3</b> and <b>4</b> seem to be promising candidates against biofilm formation by marine bacteria.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10234503","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: 1
Long-lasting biofouling formation on transparent fouling-release coatings for the construction of efficient closed photobioreactors. 在透明污垢释放涂层上形成持久的生物污垢,用于构建高效的封闭式光生物反应器。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-05-01 Epub Date: 2023-07-03 DOI: 10.1080/08927014.2023.2228208
Yolanda Soriano-Jerez, Lucía García-Abad, María Del Carmen Cerón-García, Juan José Gallardo-Rodríguez, Christine Bressy, Francisco García-Camacho, Emilio Molina-Grima
{"title":"Long-lasting biofouling formation on transparent fouling-release coatings for the construction of efficient closed photobioreactors.","authors":"Yolanda Soriano-Jerez,&nbsp;Lucía García-Abad,&nbsp;María Del Carmen Cerón-García,&nbsp;Juan José Gallardo-Rodríguez,&nbsp;Christine Bressy,&nbsp;Francisco García-Camacho,&nbsp;Emilio Molina-Grima","doi":"10.1080/08927014.2023.2228208","DOIUrl":"10.1080/08927014.2023.2228208","url":null,"abstract":"<p><p>In order to build an efficient closed-photobioreactor (PBR) in which biofouling formation is avoided, a non-toxic coating with high transparency is required, which can be applied to the interior surface of the PBR walls. Nowadays, amphiphilic copolymers are being used to inhibit microorganism adhesion, so poly(dimethylsiloxane)-based coatings mixed with poly(ethylene glycol)-based copolymers could be a good option. The 7 poly(dimethylsiloxane)-based coatings tested in this work contained 4% w/w of poly(ethylene glycol)-based copolymers. All were a good alternative to glass because they presented lower cell adhesion. However, the DBE-311 copolymer proved the best option due to its very low cell adhesion and high transmittance. Furthermore, XDLVO theory indicates that these coatings should have no cell adhesion at time 0 since they create a very high-energy barrier that microalgae cells cannot overcome. Nevertheless, this theory also shows that their surface properties change over time, making cell adhesion possible on all coatings after 8 months of immersion. The theory is useful in explaining the interaction forces between the surface and microalgae cells at any moment in time, but it should be complemented with models to predict the conditioning film formation and the contribution of the PBR's fluid dynamics over time.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9882911","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: 2
Design of silicone interfaces with antibacterial properties. 具有抗菌性能的有机硅界面设计。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-05-01 Epub Date: 2023-06-30 DOI: 10.1080/08927014.2023.2228206
Marie Barshutina, Dmitry Yakubovsky, Roman Kirtaev, Valentyn Volkov, Aleksey Arsenin, Anastasiya Vladimirova, Andrei Baymiev, Sergey Barshutin
{"title":"Design of silicone interfaces with antibacterial properties.","authors":"Marie Barshutina,&nbsp;Dmitry Yakubovsky,&nbsp;Roman Kirtaev,&nbsp;Valentyn Volkov,&nbsp;Aleksey Arsenin,&nbsp;Anastasiya Vladimirova,&nbsp;Andrei Baymiev,&nbsp;Sergey Barshutin","doi":"10.1080/08927014.2023.2228206","DOIUrl":"10.1080/08927014.2023.2228206","url":null,"abstract":"<p><p>Silicone implants are widely used for plastic or reconstruction medical applications. However, they can cause severe infections of inner tissues due to bacterial adhesion and biofilm growth on implant surfaces. The development of new antibacterial nanostructured surfaces can be considered as the most promising strategy to deal with this problem. In this article, we studied the influence of nanostructuring parameters on the antibacterial properties of silicone surfaces. Nanostructured silicone substrates with nanopillars of various dimensions were fabricated using a simple soft lithography technique. Upon testing of the obtained substrates, we identified the optimal parameters of silicone nanostructures to achieve the most pronounced antibacterial effect against the bacterial culture of <i>Escherichia coli</i>. It was demonstrated that up to 90% reduction in bacterial population compared to flat silicone substrates can be achieved. We also discussed possible underlying mechanisms behind the observed antibacterial effect, the understanding of which is essential for further progress in this field.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9892325","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
An antimicrobial metabolite n- hexadecenoic acid from marine sponge-associated bacteria Bacillus subtilis effectively inhibited biofilm forming multidrug-resistant P. aeruginosa. 海洋海绵相关细菌枯草芽孢杆菌的抗菌代谢物正十六烯酸有效抑制多重耐药铜绿假单胞菌的生物膜形成。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-05-01 DOI: 10.1080/08927014.2023.2232722
Arya Sajayan, Amrudha Ravindran, Joseph Selvin, Prathiviraj Ragothaman, George Seghal Kiran
{"title":"An antimicrobial metabolite n- hexadecenoic acid from marine sponge-associated bacteria <i>Bacillus subtilis</i> effectively inhibited biofilm forming multidrug-resistant <i>P. aeruginosa</i>.","authors":"Arya Sajayan,&nbsp;Amrudha Ravindran,&nbsp;Joseph Selvin,&nbsp;Prathiviraj Ragothaman,&nbsp;George Seghal Kiran","doi":"10.1080/08927014.2023.2232722","DOIUrl":"https://doi.org/10.1080/08927014.2023.2232722","url":null,"abstract":"<p><p>Effective drug candidates to obstruct the emergence of multidrug-resistant pathogens have become a major concern. A potent antimicrobial producer was isolated from a marine sponge designated as MSI38 and was identified as <i>Bacillus subtilis</i> by 16SrDNA sequencing. The active antimicrobial fraction was purified, and the metabolite was identified as n-hexadecanoic acid by spectroscopic analysis. The fish-borne pathogen <i>Pseudomonas aeruginosa</i> FP012 was found to be multidrug-resistant and poses a risk of disease to food handlers and consumers in general. The compound showed a potent bactericidal effect against <i>P. aeruginosa</i> FP012 with a MIC of 31.33 ± 5.67 mg L<sup>-1</sup> and MBC of 36.66 ± 5.17 mg L<sup>-1</sup>. The time-based biofilm inhibitory potential of MSI38 and ciprofloxacin was analyzed by confocal laser scanning microscopy. A synergistic effect of MSI38 and ciprofloxacin on biofilm showed 85% inhibition.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9947139","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
Interspecies interactions in mixed-species biofilms formed by Enterococcus faecalis and gram-negative bacteria isolated from polymicrobial diabetic foot ulcers. 从多微生物糖尿病足溃疡中分离的粪肠球菌和革兰氏阴性菌形成的混合物种生物膜中的种间相互作用。
IF 2.7 3区 生物学
Biofouling Pub Date : 2023-05-01 Epub Date: 2023-07-24 DOI: 10.1080/08927014.2023.2236949
Florencia Mariani, Guillermo E Juarez, Claudia Barberis, Florencia Veiga, Carlos Vay, Estela M Galvan
{"title":"Interspecies interactions in mixed-species biofilms formed by <i>Enterococcus faecalis</i> and gram-negative bacteria isolated from polymicrobial diabetic foot ulcers.","authors":"Florencia Mariani,&nbsp;Guillermo E Juarez,&nbsp;Claudia Barberis,&nbsp;Florencia Veiga,&nbsp;Carlos Vay,&nbsp;Estela M Galvan","doi":"10.1080/08927014.2023.2236949","DOIUrl":"10.1080/08927014.2023.2236949","url":null,"abstract":"<p><p>Diabetic foot ulcers (DFU) are exacerbated by bacterial colonisation. Here, a high prevalence of <i>Enterococcus faecalis</i> was observed in DFU patients from an Argentinean hospital. <i>E. faecalis</i> was frequently co-isolated with <i>Escherichia coli</i>, <i>Morganella morganii</i>, and <i>Pseudomonas aeruginosa</i>. The effect of interspecies interactions on bacterial growth was investigated in mixed-species macrocolony biofilms developed in Lubbock-Glc-agar. Similar cell counts were found for <i>E. faecalis</i> and <i>M. morganii</i> growing in mixed and single-species biofilms. An <i>E. faecalis</i> strain showed 1 Log higher cell counts in mixed biofilms with <i>E. coli</i>. Remarkably, <i>E. faecalis</i> strains showed 2 to 4 Log higher cell counts in mixed biofilms with <i>P. aeruginosa</i>. This effect was not observed in planktonic growth or biofilms developed in tryptic soy agar. The present findings reveal bacterial interactions that benefit <i>E. faecalis</i> in mixed-species biofilms, mainly with <i>P. aeruginosa</i>, in a medium that partially mimics the nutrients found in DFU.</p>","PeriodicalId":8898,"journal":{"name":"Biofouling","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9947142","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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