[Pharmacokinetic, bacteriological and clinical studies on biapenem (L-627) in children].
The results are summarized as follows: 1. A total of 10 patients were treated with biapenem (L-627). We received informed consent from all of their parents. Each dose was 6 mg/kg, and it was administered 3 times daily (40 mg/kg, 4 times daily in meningitis), in a 30-minute intravenous drip infusion for 5-17 days. The clinical efficacies of L-627 in 10 patients with bacterial infections (1 with purulent meningitis, 1 with sepsis, 5 with pneumonia, 2 with urinary tract infection and 1 with purulent tonsillitis) were evaluated as excellent in 8 patients, as good in 2 patients with an efficacy rate of 100%. Seven causative organisms found in 5 patients (Streptococcus pneumoniae in 2, Moraxella (Branhamella) catarrhalis in 2, Haemophilus influenzae in 2 and Pseudomonas aeruginosa in 1) were eradicated. No adverse reaction was observed in any of the 10 patients. 2. Pharmacokinetic studies Peak plasma concentrations of L-627 were 12.5-13.7 micrograms/ml at the dose of 6 mg/kg administered by 30-minute drip infusion. Plasma half-lives of L-627 in the beta-phase averaged 0.72 hour (0.63-0.80 hour). CSF concentration/plasma concentration ratios of L-627 were 1.12/8.16 micrograms/ml (Day 2, 1.17 hours after at dose of 20 mg/kg), 0.88/3.44 micrograms/ml (Day 3, 4.0 hours after at dose of 30 mg/kg) and 0.68/5.12 micrograms/ml (Day 13, 3.0 hours after at dose of 40 mg/kg) administered by 30-minute drip infusion in the child with purulent meningitis (case 1).(ABSTRACT TRUNCATED AT 250 WORDS)
Tajima
T
T
Department of Pediatrics, Teikyo University, School of Medicine.
Niimi
R
R
Kobayashi
M
M
Kobayashi-Negishi
S
S
Kondo
Y
Y
Nakayama-Esaki
E
E
Nishimura
S
S
Hagiwara
N
N
Abe
T
T
D001419:Bacteria / Q000187:drug effects / Q000302:isolation & purification; D001424:Bacterial Infections / Q000188:drug therapy* / Q000378:metabolism / Q000382:microbiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006207:Half-Life; D006801:Humans; D007223:Infant; D008297:Male; D016920:Meningitis, Bacterial / Q000134:cerebrospinal fluid / Q000188:drug therapy; D013845:Thienamycins / Q000493:pharmacokinetics* / Q000627:therapeutic use*
D013845:Thienamycins; C065257:biapenem