TY - JOUR
T1 - Basic and clinical studies of loracarbef
AU - Sawae, Yoshio
AU - Okada, Kaoru
AU - Ishimaru, Toshiyuki
AU - Takaki, Koji
AU - Shimono, Nobuyuki
AU - Misumi, Hiroyasu
AU - Eguchi, Katsuhiko
AU - Shigematsu, Mika
AU - Niho, Yoshiyuki
PY - 1993
Y1 - 1993
N2 - We performed basic and clinical studies of loracarbef (LCBF), a new carbacephem, with the following results. 1) Antimicrobial activity The MICs of LCBF against various clinical isolates were determined with an inoculum size of 106 cells/ml. The MIC80 was 6.25 μg/ml for methicillin-sensitive Staphylococcus aureus, 1.56 for Escherichia coli, 25 for Klebsiella pneumoniae, and >100 for methicillin-resistant S. aureus, Enterococcus faecalis, Enterobacter spp., Proteus spp., Citrobacter freundii and Pseudomonas aeruginosa. Its activity was almost equal to cephalexin and cefaclor, but it was much less than that of cefpodoxime against gramnegative bacilli. 2) Serum concentration and urinary excretion Serum concentrations of LCBF were measured in 5 elderly patients without abnormal renal function, given 200 mg of LCBF orally in a fasting condition. The peak mean serum concentration was 8.85 μg/ml one hour after administration. T1/2 was 1.75 h and AUC was 25.2 μg ⋅ h/ml. The mean 8 h cumulative urinary excretion rate was 84.8%. 3) Clinical efficacy and adverse reactions One patient with pneumonia, 1 with acute bronchitis, 2 with acute tonsillitis, 1 with acute pharyngitis, and 1 with furuncle were treated with LCBF at a daily dose of 600 ~ 1200 mg for 4 ~ 21 days. Clinical response was excellent in one patient and good in 5. Causative organisms were eradicated in 3 patients and decreased in one patient with acute tonsillitis caused by S. aureus and Streptococcus milleri. Adverse reactions and abnormal laboratory findings were not observed.
AB - We performed basic and clinical studies of loracarbef (LCBF), a new carbacephem, with the following results. 1) Antimicrobial activity The MICs of LCBF against various clinical isolates were determined with an inoculum size of 106 cells/ml. The MIC80 was 6.25 μg/ml for methicillin-sensitive Staphylococcus aureus, 1.56 for Escherichia coli, 25 for Klebsiella pneumoniae, and >100 for methicillin-resistant S. aureus, Enterococcus faecalis, Enterobacter spp., Proteus spp., Citrobacter freundii and Pseudomonas aeruginosa. Its activity was almost equal to cephalexin and cefaclor, but it was much less than that of cefpodoxime against gramnegative bacilli. 2) Serum concentration and urinary excretion Serum concentrations of LCBF were measured in 5 elderly patients without abnormal renal function, given 200 mg of LCBF orally in a fasting condition. The peak mean serum concentration was 8.85 μg/ml one hour after administration. T1/2 was 1.75 h and AUC was 25.2 μg ⋅ h/ml. The mean 8 h cumulative urinary excretion rate was 84.8%. 3) Clinical efficacy and adverse reactions One patient with pneumonia, 1 with acute bronchitis, 2 with acute tonsillitis, 1 with acute pharyngitis, and 1 with furuncle were treated with LCBF at a daily dose of 600 ~ 1200 mg for 4 ~ 21 days. Clinical response was excellent in one patient and good in 5. Causative organisms were eradicated in 3 patients and decreased in one patient with acute tonsillitis caused by S. aureus and Streptococcus milleri. Adverse reactions and abnormal laboratory findings were not observed.
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U2 - 10.11250/chemotherapy1953.41.Supplement3_227
DO - 10.11250/chemotherapy1953.41.Supplement3_227
M3 - Article
AN - SCOPUS:0027385112
VL - 41
SP - 227
EP - 234
JO - CHEMOTHERAPY
JF - CHEMOTHERAPY
SN - 0009-3165
ER -