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

Application of mathematical model to multiple-dose experimental chemotherapy for fatal murine pneumonia.

Two beta-lactam antibiotics, cefazolin and cefmenoxime, were administered for 7 days to mice with pneumonia caused by Klebsiella pneumoniae by using dosage regimens that would simulate multiple dosing in usual clinical treatments at dosing intervals of 8 or 12 h. Viable numbers of the bacteria in the lungs were measured at 12- or 24-h intervals. The mathematical model established in a previous single-dose study was applied in this study to explain the time courses of the changes in bacterial count over 7 days. However, because the error in viable count measurements was larger than that in the previous study, the time course of the changes in mean viable count was not regular and the viable count reduction rate changed during multiple dosing, and therefore it was difficult to explain the time course by repeated application of the mathematical model described previously. This study suggests that the changes in pharmacokinetic and pharmacodynamic parameters during multiple dosing need to be considered.[1]


  1. Application of mathematical model to multiple-dose experimental chemotherapy for fatal murine pneumonia. Hishikawa, T., Kusunoki, T., Tsuchiya, K., Uzuka, Y., Sakamoto, T., Nagatake, T., Matsumoto, K. Antimicrob. Agents Chemother. (1991) [Pubmed]
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