Transfer of injected fosfomycin into human skin exudates (blister).
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The transport of fosfomycin into three kinds of exudates (suction blister fluid, burn blister fluid, and exudates from excoriated skin wounds) from blood was studied after intravenous bolus injection of fosfomycin (50mg/kg). Concentrations of fosfomycin in serum and in the above fluids or exudates were determined by bioassay using <I>Proteus</I> sp.(MB-837) as a test organism. Concentrations of fosfomycin in serum reached 246±54.6μg/ml (mean±SD) 15 minutes after injection, and decreased to 13.3±10.0 μg/ml after 8 hr. Peak concentrations of the antibiotic in suction blister fluid, burn blister fluid, andexudates from excoriated wounds occurred after approximately 1 hour. According to calculations made by a modified deconvolution method, <I>T</I><SUB>max</SUB> (time of maximum concentration), <I>C</I><SUB>max</SUB> (maximum concentration), AUC<SUP>0-8h</SUP> (area under the curve), apparent transport rate constant <I>K</I><SUB>1</SUB> (serum to exudate), <I>K</I><SUB>2</SUB> (exudate to serum) and <I>K</I><SUB>1</SUB>/<I>K</I><SUB>2</SUB> were, respectively, 1.5 hr, 79.87mu;g/ml, 391.8μg·hr/ml, 0.631 hr<SUP>-1</SUP>, 0.839 hr<SUP>-1</SUP> and 0.752 for suction blister fluid, 1.3 hr, 80.97mu;g/ml, 358.7μg·hr/ml, 0.612 hr<SUP>-1</SUP>, 1.10 hr<SUP>-1</SUP>, and 0.556 for burn blister fluid, and 0.7 hr, 73.4μg/ml, 229.2μg·hr/ml, 0.986 hr<SUP>-1</SUP>, 2.27 hr<SUP>-1</SUP>, and 0.434 for exudates from excoriated skin wounds.
- 公益社団法人 日本化学療法学会の論文
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