Pharmacokinetic and clinical study of biapenem in obstetric and gynecology

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Biapenem (BIPM) is a new 4 α-methyl carbapenem antibiotic with an exceptionally broad spectrum of an antibacterial activity in vitro and is stable to human renal dehydropeptidase-I (DHP-I). Pharmacokinetic and clinical studies of BIPM, a newly carbapenem compound were performed. The intravenously administered BIPM, a single drip infusion (60min) of 300mg, showed the fast and good penetration to the tissues (cervix uteri, portio vaginalis, myometrium, endometrium, oviduct and ovary): the peak concentration in the elbow vein and uterine artery were 6.9 and 6.3 μg/ml, respectively. Maximum concentrations in genital tissues were 1.6-4.5μg/g. BIPM was administered to 5 patients, 2 with puerperal intrauterine infection, 1 with uterine adnexitis and 2 with pelvicperitonitis at a dose of 300mg, 2 or 3 times for 6 to 10 days. As a result, the clinical effects of BIPM were good in all cases. Two strains Escherichia coli and Klebsiella pneumoniae, were eradicated after treatment. Neither side effects nor abnormal laboratory test values were observed. Ultimately, BIPM were very useful for gynecologic infections.
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