carubicin and Liver-Neoplasms

Carminomycin is an original antitumor antibiotic from the anthracycline group isolated at the Institute of New Antibiotics (USSR) in 1973. Pharmacological investigation of carminomycin revealed its satisfactory absorption from the gastrointestinal tract which proved to be a distinguishing property of the antibiotic as compared to other anthracyclines such as adriamycin and rubomycin. The clinical trials of carminomycin showed that it was mainly active against soft tissue sarcoma and breast cancer, lymphosarcoma, neuroblastoma, Wilms' tumor and Ewing's sarcoma in children, as well as acute leukemia. Various regimens for the antibiotic administration were applied: short-term, single and long-term. Suppression of hemopoiesis was considered as a limiting toxic effect. By the data available carminomycin had lower cardiotoxicity as compared with rubomycin and adriamycin. Development of oral carminomycin is believed promising.

Topics: Adult; Breast Neoplasms; Carubicin; Child; Female; Humans; Kidney Neoplasms; Leukemia, Myeloid, Acute; Liver Neoplasms; Neoplasms; Sarcoma; Soft Tissue Neoplasms; Uterine Neoplasms; Wilms Tumor

This study was designed to determine the effects of several antitimor anthracyclines, including Adriamycin and its analogs, carminomycin and marcellomycin, on the ultrastructure of nucleoli of Novikoff hepatoma cells. Adriamycin and carminomycin, which are structurally related, induce nucleolar segregation following the formation of conspicuous fibrillar centers. Marcellomycin did not induce formation of nucleolar fibrillar centers. Instead, numerous microspherules formed following treatment with marcellomycin; later complete nucleolar segregation developed. The microspherules were observed to be in various stages of extrusion from the nucleolar body. This microspherule "migration" appeared to be both time and drug concentration dependent. These results show that the rate and extent of nucleolar ultrastructural aberration may be related to structural differences of the various anthracyclines.

Topics: Animals; Antibiotics, Antineoplastic; Carcinoma, Hepatocellular; Carubicin; Cell Nucleolus; Cells, Cultured; Dose-Response Relationship, Drug; Doxorubicin; Drug Evaluation, Preclinical; In Vitro Techniques; Liver Neoplasms; Structure-Activity Relationship; Time Factors