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  • Title: [Pharmacokinetics and clinical effects of aspoxicillin in pediatric patients].
    Author: Fujii R, Meguro H, Kim B, Yonezawa H, Kawaoi T, Tajima T, Mashiko J, Nakazawa S, Niino K, Sato H.
    Journal: Jpn J Antibiot; 1987 Sep; 40(9):1651-67. PubMed ID: 3694789.
    Abstract:
    Since the efficacy and the safety of aspoxicillin (ASPC, TA-058) have been established on adult patients and the need of ASPC use on pediatric patients was anticipated, we performed a 16 center study on the clinical utility of ASPC in pediatric patients. 1. Pharmacokinetics ASPC was intravenously administered to 45 patients at a dose of 10, 20 or 40 mg/kg by one shot. Serum concentrations of ASPC were dependent of dose levels, and maximum levels of 58.4-230.8 micrograms/ml and half-lives (beta) of 1.08-1.16 hours were observed. Urinary recovery rates were 62.7-67.2% in 6 hours. Results obtained upon drip infusions (0.5-1 hour) were similar to one shot injections. 2. Clinical results (1) Clinical effectiveness Of 318 evaluable patients including 175 boys and 143 girls, 18.2% were nurslings and 61% were young children under 4 years of age. One hundred eighty six patients from whom causative organisms were isolated were classified as A group. Among them were 5 patients suffered with sepsis, but the ASPC treatment eradicated all the bacteria but Salmonella java in 1 case. All of 4 patients with meningitis were cured and all causative organisms (3 cases with Haemophilus influenzae and 1 case with Gram-positive coccus) were eradicated. Cure rates were 90% for 130 patients with respiratory tract infection, 88.6% for 35 with urinary tract infection, 85.7% for 7 with skin soft tissue infection and 89.8% for all the A group patients. Meanwhile, no causative organisms were isolated from 132 patients (B group patients) but cure rate of 91.7% was obtained for this group. No statistical difference was observed between A and B groups. For all the patients (318), the cure rate was 90.6%. (2) Bacteriological effects Of 63 Gram-positive bacteria isolated as pathogens, 58 strains were eradicated. Of 117 Gram-negative bacterial, 101 were eradicated. The eradication rate on all 180 strains was 88.3%. Overall, ASPC showed excellent effects against Streptococcus. Among strains of Staphylococcus aureus, 18 of 20 strains were eradicated. Of 59 strains of H. influenzae, 52 were eradicated and 3 decreased. Among strains of Escherichia coli, 25 of 28 strains were eradicated. Of Pseudomonas aeruginosa, 2 strains were decreased and one was unchanged. (3) ASPC was effective in 93.3% of 30 patients with serious infections and 79.2% of 72 patients with underlying diseases. Cure rates for patients with and without underlying disease were significantly different statistically (chi 2: P less than 0.005).(ABSTRACT TRUNCATED AT 400 WORDS)
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