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

In vivo antibacterial activity of cefodizime, a new cephalosporin antibiotic.

The in vivo activity of cefodizime (HR 221) was compared with that of cefotaxime (CTX), cefmenoxime, latamoxef, cefazolin and cefmetazole (CMZ). The protective effects of HR 221 on experimental infections in mice caused by Staphylococcus aureus Smith, Escherichia coli C-11, Proteus vulgaris GN-76 and Serratia marcescens No. 2 were directly related to its in vitro activity against these strains. In contrast, the compound showed the smallest ED50 values, among the 5 antibiotics tested (not including CMZ), for Klebsiella pneumoniae 3K-25 and Pseudomonas aeruginosa PI 67 against which it had relatively low in vitro activity, and its ED50 for Citrobacter freundii GN-346 was as small as 1.821 mg/mouse in spite of its MIC of greater than 100 micrograms/ml. HR 221 exerted potent bactericidal activity against Streptococcus pneumoniae Sp-1 inoculated into the mouse lung; the duration of action was prolonged. When tested against the E. coli Ec-89 infection induced in the rat uterus, the activity of HR 221 given to rats once daily was equal to that of CTX or CMZ given at the same dose twice daily.[1]


  1. In vivo antibacterial activity of cefodizime, a new cephalosporin antibiotic. Kasai, K., Tsuji, A., Miyazaki, S., Goto, S., Fujimoto, K., Masuyoshi, S., Arai, S. The Japanese journal of antibiotics. (1984) [Pubmed]
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