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

Biphasic effects of geranylgeraniol, teprenone, and phytol on the growth of Staphylococcus aureus.

We examined the antibacterial activities against Staphylococcus aureus of three diterpenes, namely, geranylgeraniol, teprenone, and phytol, by using a broth dilution with shaking method to identify the effects of diterpenes with long aliphatic carbon chains. We also performed time-kill assays and measured the leakage of K(+) ions from bacterial cells in response to these diterpenes. The diterpenes used inhibited the growth of S. aureus at concentrations of 0.15 microg/ml, as determined by damage to the cell membranes, and had clear bactericidal activity. However, the inhibitory effects of the diterpenes decreased when the concentration of each was raised above a certain level. The diterpenes tested in this study appeared to have both growth-inhibitory and growth-accelerating effects, and the net effect of each depended on its concentration.[1]

References

  1. Biphasic effects of geranylgeraniol, teprenone, and phytol on the growth of Staphylococcus aureus. Inoue, Y., Hada, T., Shiraishi, A., Hirose, K., Hamashima, H., Kobayashi, S. Antimicrob. Agents Chemother. (2005) [Pubmed]
 
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