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

Disposition of phosphomycin in patients with pleural effusion.

The pharmacokinetics of phosphomycin were studied in seven patients with pleural effusion of varied etiologies. All patients received a single intravenous bolus of 30 mg of antibiotic per kg. Phosphomycin levels in plasma and pleural fluid were determined simultaneously. Antibiotic levels in plasma followed a two-compartment open kinetic model. In the pleural fluid, maximum concentrations of phosphomycin, 42.63 +/- 16.03 micrograms/ml (mean +/- standard deviation), were reached at 3.69 +/- 1.08 h after administration of the antibiotic. The disappearance constant of the antibiotic from the pleural fluid was significantly smaller (0.16 +/- 0.06 h-1) than the elimination constant determined from the levels of drug in plasma (0.73 +/- 0.26 h-1). Phosphomycin persisted in antibacterial concentrations in the pleural fluid for a considerable period of time. The low accessibility of phosphomycin observed in one of the patients in the study, with a maximum concentration value of 2.16 micrograms of phosphomycin per ml of pleural fluid, could be due to the existence of pachypleuritis in that patient; this was later confirmed in clinical and histological studies done after the research described here.[1]


  1. Disposition of phosphomycin in patients with pleural effusion. Lastra, C.F., Mariño, E.L., Barrueco, M., Gervós, M.S., Gil, A.D. Antimicrob. Agents Chemother. (1984) [Pubmed]
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