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DW-286a is a new class of fluoronaphthyridone antibiotic. Its effect on the central nervous system, general behavior, and cardiovascular, respiratory, and other organ systems were studied. The doses given were 30, 50, 100, 150, 300, and 1000 mg/kg and drugs were administered orally. DW-286a did not show any effects on general behavior, motor coordination, analgesic action, seizure and mortality, blood pressure and heart rate, contractile response of isolated guinea pig ileums, and renal function. On the other hand, DW-286a decreased spontaneous locomotor activity from 120 to 240 min after administration at the doses of 300 and 1000 mg/kg and the respiration rate from 30 to 240 min after the administration of doses up to 100 mg/kg. The sleeping time and body temperature were increased significantly in mice at the dose of 1000 mg/kg. DW-286a increased the charcoal transport significantly at doses of 300 and 1000 mg/kg. DW-286a inhibited gastric acid secretion, reduced the volume of the gastric juice and total acidity, and increased the pH dose dependently. Based on the above results, it was concluded that DW-286a affects spontaneous locomotor activity, respiration and body temperature, gastrointestinal transport, gastric secretory action, and hexobarbital sleeping time at high doses.

General Pharmacology of DW-286a, a New Fluoronaphthyridone Antibiotic: Effects on Central Nervous, Cardiovascular, and Respiratory Systems