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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Relative expression of Pseudomonas aeruginosa virulence genes analyzed by a real time RT-PCR method during lung infection in rats.

The bacterial aspects of the events occurring during the first days of lung colonization by Pseudomonas aeruginosa are still unknown. The aim of this study was to develop a real time RT-PCR method for the direct quantification of the transcripts of three P. aeruginosa virulence genes: exoS, lasI and algD, during the first seven days of a rat lung infection. Our results document differences in bacterial gene expression throughout P. aeruginosa infection. ExoS transcripts levels were very high in the first days of infection, but a significant decrease was then progressively observed. Transcription of algD occurred on the 4th day and increased regularly over time suggesting a balance in the transcription of exoS and algD. The strong expression of exoS during the first 3 days was correlated to 29% of mortality among infected rats. On the contrary, the increase of algD expression after this period was associated to the development of a chronic infection with no further mortality. LasI transcription remained more constant throughout the infection.[1]

References

  1. Relative expression of Pseudomonas aeruginosa virulence genes analyzed by a real time RT-PCR method during lung infection in rats. Joly, B., Béatrice, J., Pierre, M., Maud, P., Auvin, S., Stéphane, A., Colin, F., Franc Cois, C., Gottrand, F., Frédéric, G., Guery, B., Benoit, G., Husson, M.O. FEMS Microbiol. Lett. (2005) [Pubmed]
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