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  • Title: Comparative tissue distribution of ceforanide, cefazolin, and cefamandole in rats.
    Author: Lee FH, Smyth RD, Van Harken DR.
    Journal: Antimicrob Agents Chemother; 1981 Apr; 19(4):625-7. PubMed ID: 7247385.
    Abstract:
    The comparative tissue distribution of ceforanide, cefazolin, and cefamandole was determined in rats after subcutaneous doses of 100 mg/kg. Ceforanide had the longest plasma half-life, 0.9 h, versus 0.5 h for cefazolin and 0.4 h for cefamandole, and the highest area under the plasma concentration time curve, 324 micrograms x h per ml, versus 184 micrograms x h per ml for cefazolin and 42 micrograms x h per ml for cefamandole. The peak plasma concentrations of ceforanide and cefazolin were 173 and 140 micrograms/ml, respectively, and were threefold higher than that of cefamandole (49 micrograms/ml). Measureable concentrations of the three compounds were found in the liver, kidneys, lungs, submaxillary glands, cervical lymph nodes, bones, heart, abdominal muscles, eyes, and testes, with cefamandole levels being generally lower and more variable. The peak tissue levels of ceforanide and cefazolin were comparable, within the limit of data variation, and were considerably higher than that of cefamandole. The tissue half-lives of these cephalosporins were similar to the respective plasma half-lives.
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