Journal
BMC MICROBIOLOGY
Volume 8, Issue -, Pages -Publisher
BMC
DOI: 10.1186/1471-2180-8-184
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Funding
- Fundacion Conchita Rabago de Jimenez Diaz
- Academy of Finland
- Paulo Foundation and Proteesisaatio Foundation
- Comunidad de Madrid [S-0505/MAT/000324]
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Background: A study to evaluate the biofilm-development ability in three different media (Middlebrook 7H9, sterile tap water and PBS-5% glucose) was performed with 19 collection strains from 15 different species on non-pigmented rapidly growing mycobacteria (NPRGM). A microtiter plate assay was developed to evaluate the percentage of covered surface of the microtiter plate wells in different days from day 1 to day 69. Results: All strains were able to develop biofilm in all the tested media. Middlebrook 7H9 showed the fastest growth, followed by sterile tap water and PBS-5% glucose. A sigmoid growth curve was detected in all the strains both in Middlebrook 7H9 and in sterile tap water. A difference could be detected for Mycobacterium abscessus in tap water, where it showed faster growth than all the other strains. Conclusion: Biofilm development seems to be a property of all the species of NPRGM and it depends on the nutrients present in the medium. The microtiter plate assay described here is a useful tool to evaluate differences in biofilm development among the different species of rapidly growing mycobacteria.
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