Name: Kwantificering van violaceïne in Chromobacterium violaceum en de remming ervan door bioactieve stoffen (Video) | JoVE Journal
Uploaded: 2025-08-08T14:10:00.000+00:00
Duration: 7 min 13 s
Description: Ontdek hoe je violaceïne kwantificeert in Chromobacterium violaceum om quorum sensing-remming door bioactieve stoffen te onderzoeken. Deze methode identificeert nieuwe anti-virulentieverbindingen tegen antibiotica-resistente bacteriën.

ai_agent_IP

ai_agent

maintenance

instantTrialDurationMinutes

isBiopharma

enableNewMyJoveSectionDesign

educationFeatures

seoMetaApi

ai_copilot_institution_blacklist

ai_chat_institution_blacklist

freeAccessWindow

ssoRoleCapture

scheduledMaintenanceBanner

joveLabsFeatures

disable_autoplay_for_bots

extended_trial_duration

5 minutes

playerTrialDesktop

<ol><li>Mukherjee, S., Bassler, B. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Bacterial+quorum+sensing+in+complex+and+dynamically+changing+environments%5BTitle%5D)+AND+%22Nat+Rev+Microbiol%22%5BJournal%5D)">Bacterial quorum sensing in complex and dynamically changing environments.</a> Nat Rev Microbiol. 17 (6), 371(2019).</li>
<li>Lima, E. M. F., Winans, S. C., Pinto, U. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum+sensing+interference+by+phenolic+compounds+-+A+matter+of+bacterial+misunderstanding%5BTitle%5D)+AND+%22Heliyon%22%5BJournal%5D)">Quorum sensing interference by phenolic compounds - A matter of bacterial misunderstanding.</a> Heliyon. 9 (7), (2023).</li>
<li>Papenfort, K., Bassler, B. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum+sensing+signal-response+systems+in+Gram-negative+bacteria%5BTitle%5D)+AND+%22Nat+Rev+Microbiol%22%5BJournal%5D)">Quorum sensing signal-response systems in Gram-negative bacteria.</a> Nat Rev Microbiol. 14 (9), 576-588 (2016).</li>
<li>Grandclément, C., Tannières, M., Moréra, S., Dessaux, Y., Faure, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum+quenching%3A+role+in+nature+and+applied+developments%5BTitle%5D)+AND+%22FEMS+Microbiol+Rev%22%5BJournal%5D)">Quorum quenching: role in nature and applied developments.</a> FEMS Microbiol Rev. 40 (1), 86-116 (2016).</li>
<li>Lima, E. M. F., de Almeida, F. A., Sircili, M. P., Bueris, V., Pinto, U. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((N-acetylcysteine+%28NAC%29+attenuates+quorum+sensing+regulated+phenotypes+in+Pseudomonas+aeruginosa+PAO1%5BTitle%5D)+AND+%22Heliyon%22%5BJournal%5D)">N-acetylcysteine (NAC) attenuates quorum sensing regulated phenotypes in Pseudomonas aeruginosa PAO1.</a> Heliyon. 9 (3), (2023).</li>
<li>Allen, R. C., Popat, R., Diggle, S. P., Brown, S. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Targeting+virulence%3A+can+we+make+evolution-proof+drugs%5BTitle%5D)+AND+%22Nat+Rev+Microbiol%22%5BJournal%5D)">Targeting virulence: can we make evolution-proof drugs.</a> Nat Rev Microbiol. 12 (4), 300-308 (2014).</li>
<li>Kalia, V. C., Patel, S. K. S., Kang, Y. C., Lee, J. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum+sensing+inhibitors+as+antipathogens%3A+biotechnological+applications%5BTitle%5D)+AND+%22Biotechnol+Adv%22%5BJournal%5D)">Quorum sensing inhibitors as antipathogens: biotechnological applications.</a> Biotechnol Adv. 37 (1), 68-90 (2019).</li>
<li>Santos, C. A., Lima, E. M. F., Franco, B. D. G. deM., Pinto, U. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Exploring+phenolic+compounds+as+quorum+sensing+inhibitors+in+foodborne+bacteria%5BTitle%5D)+AND+%22Front+Microbiol%22%5BJournal%5D)">Exploring phenolic compounds as quorum sensing inhibitors in foodborne bacteria.</a> Front Microbiol. 12, 735931(2021).</li>
<li>Ahmed, S. A. K. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Natural+quorum+sensing+inhibitors+effectively+downregulate+gene+expression+of+Pseudomonas+aeruginosa+virulence+factors%5BTitle%5D)+AND+%22Appl+Microbiol+Biotechnol%22%5BJournal%5D)">Natural quorum sensing inhibitors effectively downregulate gene expression of Pseudomonas aeruginosa virulence factors.</a> Appl Microbiol Biotechnol. 103 (8), 3521-3535 (2019).</li>
<li>Yang, Q., Defoirdt, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Weak+selection+for+resistance+to+quorum+sensing+inhibition+during+multiple+host+infection+cycles%5BTitle%5D)+AND+%22ISME+J%22%5BJournal%5D)">Weak selection for resistance to quorum sensing inhibition during multiple host infection cycles.</a> ISME J. 18 (1), 251(2024).</li>
<li>Defoirdt, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Specific+antivirulence+activity%2C+A+new+concept+for+reliable+screening+of+virulence+inhibitors%5BTitle%5D)+AND+%22Trends+Biotechnol%22%5BJournal%5D)">Specific antivirulence activity, A new concept for reliable screening of virulence inhibitors.</a> Trends Biotechnol. 34 (7), (2016).</li>
<li>Defoirdt, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum-sensing+systems+as+targets+for+antivirulence+therapy%5BTitle%5D)+AND+%22Trends+Microbiol%22%5BJournal%5D)">Quorum-sensing systems as targets for antivirulence therapy.</a> Trends Microbiol. 26 (4), 313-328 (2018).</li>
<li>Mahendrarajan, V., Easwaran, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum+quenching+effects+of+linoleic+and+stearic+acids+on+outer+membrane+vesicle-mediated+virulence+in+Chromobacterium+violaceum%5BTitle%5D)+AND+%22Biofouling%22%5BJournal%5D)">Quorum quenching effects of linoleic and stearic acids on outer membrane vesicle-mediated virulence in Chromobacterium violaceum.</a> Biofouling. , 1-11 (2024).</li>
<li>Durán, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Advances+in+Chromobacterium+violaceum+and+properties+of+violacein-Its+main+secondary+metabolite%3A+A+review%5BTitle%5D)+AND+%22Biotechnol+Adv%22%5BJournal%5D)">Advances in Chromobacterium violaceum and properties of violacein-Its main secondary metabolite: A review.</a> Biotechnol Adv. 34 (5), 1030-1045 (2016).</li>
<li>Nazir, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Characterization+of+phenolic+compounds+in+two+novel+lines+of+Pisum+sativum+L.+along+with+their+in+vitro+antioxidant+potential%5BTitle%5D)+AND+%22Env+Sci+Pollut+Res+Int%22%5BJournal%5D)">Characterization of phenolic compounds in two novel lines of Pisum sativum L. along with their in vitro antioxidant potential.</a> Env Sci Pollut Res Int. 27 (7), 7639(2020).</li>
<li>Majdura, J., Jankiewicz, U., Gałązka, A., Orzechowski, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((The+role+of+quorum+sensing+molecules+in+bacterial-plant+interactions%5BTitle%5D)+AND+%22Metabolites%22%5BJournal%5D)">The role of quorum sensing molecules in bacterial-plant interactions.</a> Metabolites. 13 (1), (2023).</li>
<li>Çevikbaş, H., Ulusoy, S., Kaya Kinaytürk,, N, <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Exploring+rose+absolute+and+phenylethyl+alcohol+as+novel+quorum+sensing+inhibitors+in+Pseudomonas+aeruginosa+and+Chromobacterium+violaceum%5BTitle%5D)+AND+%22Sci+Rep%22%5BJournal%5D)">Exploring rose absolute and phenylethyl alcohol as novel quorum sensing inhibitors in Pseudomonas aeruginosa and Chromobacterium violaceum.</a> Sci Rep. 14 (1), 15666(2024).</li>
<li>Choi, S. Y., Lim, S., Yoon, K. H., Lee, J. I., Mitchell, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Biotechnological+activities+and+applications+of+bacterial+pigments+violacein+and+prodigiosin%5BTitle%5D)+AND+%22J+Biol+Eng%22%5BJournal%5D)">Biotechnological activities and applications of bacterial pigments violacein and prodigiosin.</a> J Biol Eng. 15 (1), (2021).</li>
<li>Moradi, F., Hadi, N., Bazargani, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Evaluation+of+quorum-sensing+inhibitory+effects+of+extracts+of+three+traditional+medicine+plants+with+known+antibacterial+properties%5BTitle%5D)+AND+%22New+Microb+New+Infect%22%5BJournal%5D)">Evaluation of quorum-sensing inhibitory effects of extracts of three traditional medicine plants with known antibacterial properties.</a> New Microb New Infect. 38 (100769), 100769(2020).</li>
<li>Wiegand, I., Hilpert, K., Hancock, R. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Agar+and+broth+dilution+methods+to+determine+the+minimal+inhibitory+concentration+%28MIC%29+of+antimicrobial+substances%5BTitle%5D)+AND+%22Nat+Protoc%22%5BJournal%5D)">Agar and broth dilution methods to determine the minimal inhibitory concentration (MIC) of antimicrobial substances.</a> Nat Protoc. 3 (2), 163-175 (2008).</li>
<li>Scardino, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Cinnamaldehyde+effectively+disrupts+Desulfovibrio+vulgaris+biofilms%3A+potential+implication+to+mitigate+microbiologically+influenced+corrosion%5BTitle%5D)+AND+%22Appl+Env+Microbiol%22%5BJournal%5D)">Cinnamaldehyde effectively disrupts Desulfovibrio vulgaris biofilms: potential implication to mitigate microbiologically influenced corrosion.</a> Appl Env Microbiol. 91 (5), (2025).</li>
<li>Summer, K., Browne, J., Hollanders, M., Benkendorff, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Out+of+control%3A+The+need+for+standardised+solvent+approaches+and+data+reporting+in+antibiofilm+assays+incorporating+dimethyl-sulfoxide+%28DMSO%29%5BTitle%5D)+AND+%22Biofilm%22%5BJournal%5D)">Out of control: The need for standardised solvent approaches and data reporting in antibiofilm assays incorporating dimethyl-sulfoxide (DMSO).</a> Biofilm. 4, 100081(2022).</li>
<li>Ravichandran, V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Virtual+screening+and+biomolecular+interactions+of+CviR-based+quorum+sensing+inhibitors+against+Chromobacterium+violaceum%5BTitle%5D)+AND+%22Front+Cell+Infect+Microbiol%22%5BJournal%5D)">Virtual screening and biomolecular interactions of CviR-based quorum sensing inhibitors against Chromobacterium violaceum.</a> Front Cell Infect Microbiol. 8, (2018).</li>
<li>Lima, E. M. F., de Almeida, F. A., Pinto, U. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Exploring+the+antivirulence+potential+of+phenolic+compounds+to+inhibit+quorum+sensing+in+Pseudomonas+aeruginosa%5BTitle%5D)+AND+%22World+J+Microbiol+Biotechnol%22%5BJournal%5D)">Exploring the antivirulence potential of phenolic compounds to inhibit quorum sensing in Pseudomonas aeruginosa.</a> World J Microbiol Biotechnol. 41 (2), (2025).</li>
<li>Blosser, R. S., Gray, K. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Extraction+of+violacein+from+Chromobacterium+violaceum+provides+a+new+quantitative+bioassay+for+N-acyl+homoserine+lactone+autoinducers%5BTitle%5D)+AND+%22J+Microbiol+Methods%22%5BJournal%5D)">Extraction of violacein from Chromobacterium violaceum provides a new quantitative bioassay for N-acyl homoserine lactone autoinducers.</a> J Microbiol Methods. 40 (1), 47-55 (2000).</li>
<li>Zhu, H., He, C. C., Chu, Q. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Inhibition+of+quorum+sensing+in+Chromobacterium+violaceum+by+pigments+extracted+from+Auricularia+auricular%5BTitle%5D)+AND+%22Lett+Appl+Microbiol%22%5BJournal%5D)">Inhibition of quorum sensing in Chromobacterium violaceum by pigments extracted from Auricularia auricular.</a> Lett Appl Microbiol. 52 (3), 269-274 (2011).</li>
<li>Durán, N., Antonio, R. V., Haun, M., Pilli, R. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Biosynthesis+of+a+trypanocide+by+Chromobacterium+violaceum%5BTitle%5D)+AND+%22World+J+Microbiol+Biotechnol%22%5BJournal%5D)">Biosynthesis of a trypanocide by Chromobacterium violaceum.</a> World J Microbiol Biotechnol. 10 (6), 686(1994).</li>
<li>Rettori, D., Production Durán, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((extraction+and+purification+of+violacein%3A+an+antibiotic+pigment+produced+by+Chromobacterium+violaceum%5BTitle%5D)+AND+%22World+J+Microbiol+Biotechnol%22%5BJournal%5D)">extraction and purification of violacein: an antibiotic pigment produced by Chromobacterium violaceum.</a> World J Microbiol Biotechnol. 14 (5), 685(1998).</li>
<li>Cheng, K. -C., Hsiao, H. -C., Hou, Y. -C., Hsieh, C. -W., Hsu, H. -Y., Chen, H. -Y., Lin, S. -P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Improvement+in+violacein+production+by+utilizing+formic+acid+to+induce+quorum+sensing+in+Chromobacterium+violaceum%5BTitle%5D)+AND+%22Antiox%22%5BJournal%5D)">Improvement in violacein production by utilizing formic acid to induce quorum sensing in Chromobacterium violaceum.</a> Antiox. 11 (5), 849(2022).</li>
<li>Defoirdt, T., Brackman, G., Coenye, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quorum+sensing+inhibitors%3A+how+strong+is+the+evidence%5BTitle%5D)+AND+%22Trends+Microbiol%22%5BJournal%5D)">Quorum sensing inhibitors: how strong is the evidence.</a> Trends Microbiol. 21 (12), 619-624 (2013).</li>
<li>Alyousef, A. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Myrtus+communis+and+its+bioactive+phytoconstituent%2C+linalool%2C+interferes+with+Quorum+sensing+regulated+virulence+functions+and+biofilm+of+uropathogenic+bacteria%3A+In+vitro+and+in+silico+insights%5BTitle%5D)+AND+%22J+King+Saud+Univ+Sci%22%5BJournal%5D)">Myrtus communis and its bioactive phytoconstituent, linalool, interferes with Quorum sensing regulated virulence functions and biofilm of uropathogenic bacteria: In vitro and in silico insights.</a> J King Saud Univ Sci. 33 (7), 101588(2021).</li>
<li>Kanekar, S., Devasya, R. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Growth-phase+specific+regulation+of+cviI%2FR+based+quorum+sensing+associated+virulence+factors+in+Chromobacterium+violaceum+by+linalool%2C+a+monoterpenoid%5BTitle%5D)+AND+%22World+J+Microbiol+Biotechnol%22%5BJournal%5D)">Growth-phase specific regulation of cviI/R based quorum sensing associated virulence factors in Chromobacterium violaceum by linalool, a monoterpenoid.</a> World J Microbiol Biotechnol. 38 (2), (2022).</li>
<li>Dias, J. P., Domingues, F. C., Ferreira, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Linalool+reduces+virulence+and+tolerance+to+adverse+conditions+of+listeria+monocytogenes%5BTitle%5D)+AND+%22Antibiotics%22%5BJournal%5D)">Linalool reduces virulence and tolerance to adverse conditions of listeria monocytogenes.</a> Antibiotics. 13 (6), 474(2024).</li>
<li>Rodrigues, C. F., Černáková, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Farnesol+and+tyrosol%3A+Secondary+metabolites+with+a+crucial+quorum-sensing+role+in+Candida+biofilm+development%5BTitle%5D)+AND+%22Genes%22%5BJournal%5D)">Farnesol and tyrosol: Secondary metabolites with a crucial quorum-sensing role in Candida biofilm development.</a> Genes. 11 (4), (2020).</li>
<li>Hacioglu, M., Yilmaz, F. N., Yetke, H. I., Haciosmanoglu-Aldogan, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Synergistic+effects+of+quorum-sensing+molecules+and+antimicrobials+against+Candida+albicans+and+Pseudomonas+aeruginosa+biofilms%3A+in+vitro+and+in+vivo+studies%5BTitle%5D)+AND+%22J+Antimicrob+Chemother%22%5BJournal%5D)">Synergistic effects of quorum-sensing molecules and antimicrobials against Candida albicans and Pseudomonas aeruginosa biofilms: in vitro and in vivo studies.</a> J Antimicrob Chemother. 79 (11), 2828(2024).</li>
<li>Bhattacharyya, S., Agrawal, A., Knabe, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Sol-gel+silica+controlled+release+thin+films+for+the+inhibition+of+methicillin+resistant+Staphylococcus+aureus%5BTitle%5D)+AND+%22Biomater%22%5BJournal%5D)">Sol-gel silica controlled release thin films for the inhibition of methicillin resistant Staphylococcus aureus.</a> Biomater. 35, 509-517 (2014).</li>
<li>Qu, Y., Zou, Y., Wang, G., Zhang, Y., Yu, Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Disruption+of+communication%3A+Recent+advances+in+antibiofilm+materials+with+anti-quorum+sensing+properties%5BTitle%5D)+AND+%22ACS+Appl+Mater+Interfaces%22%5BJournal%5D)">Disruption of communication: Recent advances in antibiofilm materials with anti-quorum sensing properties.</a> ACS Appl Mater Interfaces. 16 (11), 13353-13383 (2024).</li>
<li>Li, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Effects+of+Rhapontigenin+as+a+Novel+Quorum-Sensing+Inhibitor+on+Exoenzymes+and+Biofilm+Formation+of+Pectobacterium+carotovorum+subsp.+carotovorum+and+Its+Application+in+Vegetables%5BTitle%5D)+AND+%22Molecules%22%5BJournal%5D)">Effects of Rhapontigenin as a Novel Quorum-Sensing Inhibitor on Exoenzymes and Biofilm Formation of Pectobacterium carotovorum subsp. carotovorum and Its Application in Vegetables.</a> Molecules. 27 (24), (2022).</li>
<li>Mattio, L. M., Catinella, G., Pinto, A., Dallavalle, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Natural+and+nature-inspired+stilbenoids+as+antiviral+agents%5BTitle%5D)+AND+%22Eur+J+Med+Chem%22%5BJournal%5D)">Natural and nature-inspired stilbenoids as antiviral agents.</a> Eur J Med Chem. 202 (112541), 112541(2020).</li>
<li>Duarte, A., Alves, A. C., Ferreira, S., Silva, F., Domingues, F. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Resveratrol+inclusion+complexes%3A+Antibacterial+and+anti-biofilm+activity+against+Campylobacter+spp.+and+Arcobacter+butzleri%5BTitle%5D)+AND+%22Food+Res+Int%22%5BJournal%5D)">Resveratrol inclusion complexes: Antibacterial and anti-biofilm activity against Campylobacter spp. and Arcobacter butzleri.</a> Food Res Int. 77, 244-250 (2015).</li>
<li>Martinelli, D., Grossmann, G., Séquin, U., Brandl, H., Bachofen, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Effects+of+natural+and+chemically+synthesized+furanones+on+quorum+sensing+in+Chromobacterium+violaceum%5BTitle%5D)+AND+%22BMC+Microbiol%22%5BJournal%5D)">Effects of natural and chemically synthesized furanones on quorum sensing in Chromobacterium violaceum.</a> BMC Microbiol. 4 (1), (2004).</li>
<li>Tan, L. Y., Yin, W. F., Piper Chan, K. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((nigrum%2C+Piper+betle+and+Gnetum+gnemon-natural+food+sources+with+anti-quorum+sensing+properties%5BTitle%5D)+AND+%22Sensors%22%5BJournal%5D)">nigrum, Piper betle and Gnetum gnemon-natural food sources with anti-quorum sensing properties.</a> Sensors. 13 (3), 3975-3985 (2013).</li>
<li>Tan, L. Y., Yin, W. F., Chan, K. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Silencing+quorum+sensing+through+extracts+of+Melicope+lunu-ankenda%5BTitle%5D)+AND+%22Sensors%22%5BJournal%5D)">Silencing quorum sensing through extracts of Melicope lunu-ankenda.</a> Sensors. 12 (4), 4339-4351 (2012).</li>
<li>Oliveira, B. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Antioxidant%2C+antimicrobial+and+anti-quorum+sensing+activities+of+Rubus+rosaefolius+phenolic+extract%5BTitle%5D)+AND+%22Ind+Crops+Prod%22%5BJournal%5D)">Antioxidant, antimicrobial and anti-quorum sensing activities of Rubus rosaefolius phenolic extract.</a> Ind Crops Prod. 84, 59-66 (2016).</li>
</ol>

<table><tbody><tr><td>DMSO&nbsp;</td><td>Synth</td><td></td><td></td></tr><tr><td>Farnesol</td><td>Sigma-Aldrich</td><td>F203</td><td>95%</td></tr><tr><td>Linalool</td><td>Sigma-Aldrich</td><td>L2602</td><td>97%</td></tr><tr><td>Luria-Bertani Medium</td><td>Difco</td><td>244620</td><td></td></tr><tr><td>Optical Adhesive Film</td><td>Thermo Fisher</td><td>4311971</td><td>MicroAmp</td></tr><tr><td>Resveratrol</td><td>Sigma-Aldrich</td><td>R5010</td><td>&ge;99% (HPLC)</td></tr><tr><td>Synergy HTX multi-mode reader</td><td>Biotek</td><td></td><td></td></tr><tr><td>Tissue Culture Plates 96 well</td><td>Kasvi</td><td>K12-096</td><td></td></tr></tbody></table>

kwantificering van violaceïne in chromobacterium violaceum en de remming ervan door bioactieve stoffen

Quantification of Violacein in Chromobacterium violaceum and Its Inhibition by Bioactive Compounds

Kwantificering van violaceïne in Chromobacterium violaceum en de remming ervan door bioactieve stoffen

Bacteria communicate through a system known as quorum sensing (QS), which allows them to coordinate their behavior in response to changes in cell density. ...

quantification-violacein-chromobacterium-violaceum-its-inhibition

Research

JoVE Journal

Biology

Biologie

Source: Tay, S. B., et al. Anti-virulent Disruption of Pathogenic Biofilms using Engineered Quorum-quenching Lactonases. J. Vis. Exp. (2016)The video demonstrates a method to quantify biofilm biomass in a pathogenic bacterium, comparing untreated controls with samples treated with a quorum-quenching enzyme. The enzyme disrupts bacterial signaling during early incubation, reducing cell adhesion. After washing and further incubation, control wells form dense biofilms, while treated wells show...

Quantifying Enzyme-Induced Biofilm Suppression in Pathogenic Bacteria

Source: Bucher, T., et al. Methodologies for Studying B. subtilis Biofilms as a Model for Characterizing Small Molecule Biofilm Inhibitors. J. Vis. Exp. (2016)This video demonstrates a pellicle formation assay using Bacillus subtilis to evaluate small-molecule inhibitors that disrupt matrix synthesis and biofilm development, providing a model to screen compounds that selectively inhibit surface-associated growth without affecting free-floating cells.

Evaluating Inhibitor Effects on Pellicle Formation in Bacillus subtilis

De meeste bacteriële infecties produceren een biofilm. Vanwege hun omgeving zijn biofilm-geassocieerde bacteriën vaak fenotypisch resistent tegen geneesmiddelen. Nieuwe antibacteriële moleculen die bacteriën in biofilms doden, hebben dus een hoge prioriteit. We stellen een test op om snel te screenen op antimicrobiële verbindingen die effectief zijn bij het uitroeien van biofilms.

Gericht op biofilm geassocieerde<em&gt; Staphylococcus aureus</em&gt; Met behulp van Resazurin Gebaseerd Drug-gevoeligheid Assay

We beschrijven een aangepaste methode op basis van agar die is ontworpen om de antischimmeleffecten van plantaardige producten te kwantificeren. Zowel volatiele als niet-volatiele bijdragen aan de antischimmelactiviteit kunnen via dit protocol worden beoordeeld. Bovendien kan de werkzaamheid tegen schimmels worden gemeten in belangrijke ontwikkelingsstadia in één experimentele opstelling.

Meten van vluchtige en niet-vluchtige antischimmelactiviteit van Biocontrol-producten

Dit manuscript beschrijft een methode voor het gebruik van eencellige fluorescentiemicroscopie om bacteriële concurrentie in cocultuur te visualiseren en te kwantificeren.

Kwantificering van interbacteriële concurrentie met behulp van single-cell fluorescentiebeeldvorming

Dit protocol beschrijft de bereiding van het inoculum, de kwantificering van de biofilm op microtiterplaten met behulp van kristalviolette kleurstof, het aantal levensvatbare stoffen in biofilms en de visualisatie van biofilms van Acinetobacter.

Kwantificerings-, levensvatbaarheidsbeoordeling en visualisatiestrategieën voor Acinetobacter-biofilms

Thiofeensulfonamideverbindingen zijn krachtige en specifieke remmers van Vibrio quorum sensing regulatoren LuxR/HapR die hun activiteit in vivo blokkeren, waardoor transcriptie van genen voor virulentie, beweeglijkheid en biofilms wordt voorkomen. Dit protocol beschrijft hoe deze verbindingen worden gesynthetiseerd, gemodelleerd in silico en in vivo worden getest op activiteit tegen LuxR/HapR.

Synthese en bepaling van Vibrio quorum sensing-remmers

Dit protocol beschrijft een eenvoudige en economische methode voor het evalueren van de effectiviteit van potentiële fotosensibilisatoren bij antibacteriële fotodynamische inactivatie (aPDI), met behulp van een plaatformaat met 96 putjes in combinatie met een lichtbron van een LED-paneel. Deze benadering maakt het mogelijk om meerdere experimentele omstandigheden gelijktijdig te testen, waaronder verschillende concentraties, verbindingen en bacteriestammen.

LED-gebaseerde in-vitroscreening voor het beoordelen van fotoactiveerbare moleculen bij bacteriële fotodynamische inactivatie

Dit protocol biedt een systematisch kader om te beoordelen hoe fytochemicaliën de bactericide effecten van traditionele biociden kunnen versterken met behulp van bactericide activiteitsmodellering en combinatorische interactie-assays, die gericht zijn op het identificeren van synergetische mengsels die de microbiële controle verbeteren en het totale biocidegebruik verminderen.

In vitro Evaluatie van de versterkende effecten van plantaardige moleculen op conventionele biociden

Antibioticaresistentie bij adherent-invasieve Escherichia coli-stammen vormt uitdagingen bij het beoordelen van bacteriële invasie met de traditionele gentamicine-beschermingsassay. Er wordt een verbeterde methode beschreven om bacteriële invasie kwantitatief te evalueren door kolonievormende eenheden op te sommen en kwalitatief door geïnfecteerde cellen te visualiseren met immunofluorescentie-confocale microscopie.

Amikacine Beschermingsassay voor Kwantificering en Visualisatie van Escherichia coli-celinvasie

Ontdek hoe je violaceïne kwantificeert in Chromobacterium violaceum om quorum sensing-remming door bioactieve stoffen te onderzoeken. Deze methode identificeert nieuwe anti-virulentieverbindingen tegen antibiotica-resistente bacteriën.

Kwantificering van violaceïne in Chromobacterium violaceum en de remming ervan door bioactieve stoffen

Meer video's verkennen