title: Toxicological studies on a new macrolide antibiotic, midecamycin acetate (miocamycin). Part IV-1. Toxicity of metabolites of miocamycin: acute toxicity of Mb1 in mice.
abstract: Miocamycin (MOM) is a derivative of midecamycin, a macrolide antibiotic isolated from a culture broth of Streptomyces mycarofaciens. MOM is metabolized into 4 main metabolites of Mb1, Mb2, Mb6 and Mb12. The object of this study was to evaluate acute toxicity in male and female mice after single oral administration of Mb1, a metabolite of MOM, at a dose level of 5,000 mg/kg as the maximum physically applicable dose. Observations were kept for 1 week after administration. In conclusion, Mb1 exhibited no acute toxicity in present study. The LD0 values were estimated as more than 5,000 mg/kg.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D000900:Anti-Bacterial Agents / Q000378:metabolism / Q000633:toxicity*; D005260:Female; D007928:Lethal Dose 50; D007933:Leucomycins / Q000378:metabolism / Q000633:toxicity*; D008297:Male; D051379:Mice; D015644:Miocamycin
chemical_list: D000900:Anti-Bacterial Agents; D007933:Leucomycins; D015644:Miocamycin