sy-5555 and Scarlet-Fever

Clinical studies on SY5555 dry syrup, a new oral penem antibiotic, were carried out in the field of pediatrics. The following results were obtained. 1. SY5555 was administered to 10 children with various bacterial infections (2 patients with acute tonsillitis, 2 with acute bronchitis, 1 with pharyngitis, 2 with scarlet fever, 1 with pertussis and 2 with urinary tract infections). The overall clinical efficacy rate was 90%. 2. Side effects or abnormal laboratory test values were not observed except for loose stool in 1 and eosinophilia in 1.

Topics: Administration, Oral; Bacterial Infections; Carbapenems; Child; Child, Preschool; Diarrhea; Eosinophilia; Female; Humans; Infant; Male; Respiratory Tract Infections; Scarlet Fever; Urinary Tract Infections

Pharmacokinetic and clinical studies on SY5555, a new oral penem antibiotics, were performed in pediatric infections and the following results were obtained. 1. Pharmacokinetics studies Pharmacokinetics of SY5555 was studied in 5 children (5y1m-10y11m) using doses of 5 mg/kg (n = 3) and 10 mg/kg (n = 2). The average peak plasma levels were 0.65 microgram/ml at 1 or 2 hours after administration of 5 mg/kg and 2.12 micrograms/ml at 1 or 2 hours after administration of 10 mg/kg, and the plasma half-lives were 0.81 and 1.08 hours, respectively. Average cumulative urinary recovery rates at 0-6 hours were 2.97 and 3.96%, respectively. 2. Clinical studies SY5555 was administered to 45 patients with various infectious diseases (2 with acute pharyngitis, 8 with acute tonsillitis, 4 with lacunar tonsillitis, 3 each with acute bronchitis, pneumonia and pertussis, 7 with scarlet fever, 3 with impetigo contagiosa, 6 with acute urinary tract infections, 2 with balanoposthitis and 1 each with cervical lymphadenitis, S.S.S.S., vulvitis and acute colitis) at daily doses between 3.4-10 mg/kg, t.i.d., for 3-14 days. Clinical responses were excellent in 27 patients, good in 15 patients, fair in 1 patient, and poor in 2 patients, and the efficacy rate was 93.3%. Causative organisms were examined and 39 strains of 11 species were identified. The eradication rate was 78.9%. Side effects were observed in 1 patient with diarrhea. An abnormal laboratory test value was observed in 1 patient with elevation of eosinophils. The above results suggest that SY5555 may be a very useful and safe drug for the treatment of pediatric infection.

Topics: Administration, Oral; Adolescent; Bacterial Infections; Carbapenems; Child; Child, Preschool; Female; Humans; Impetigo; Infant; Male; Respiratory Tract Infections; Scarlet Fever; Urinary Tract Infections