title: Comparative investigation of cyclophosphamide action on bone marrow cells of the Armenian hamster and 4 other species of rodents.
abstract: We studied the clastogenic action of cyclophosphamide (CP) on bone marrow cells of the Armenian hamster (AH), Cricetulus migratorius. CP induced a dose-dependent linear increase in aberrant cells. The maximal cytogenetic action was observed 12 h after CP treatment. Male and female AHs were similarly sensitive to the clastogenic action of CP. We compared CP clastogenicity at a dose of 25 mg/kg on bone marrow cells of AHs, mice, rats, guinea pigs and Chinese hamsters 24 h after treatment. We observed that this dose of CP induced only 2.8% aberrant cells in bone marrow of AHs, but 42.8%, 32.2%, 25% and 14.6% aberrant cells in bone marrow of guinea pigs, rats, mice and Chinese hamsters respectively. AHs are much more resistant to the metaphase-arresting action of colchicine than other species of rodents (e.g., the colchicine dose for AHs is 100-fold more than for rats). Thus AHs are the most resistant of all rodent species studied to the clastogenic action of CP.
authors.affiliation: V.A. Fanardjian Centre for Oncology Research, Yerevan, Armenia.
authors.forename: A K
authors.initials: AK
authors.lastname: Nersessian
authors.forename: V N
authors.initials: VN
authors.lastname: Zilfian
authors.forename: V A
authors.initials: VA
authors.lastname: Koumkoumadjian
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000187:drug effects*; D001854:Bone Marrow Cells; D002842:Chromatids / Q000187:drug effects; D002869:Chromosome Aberrations / Q000235:genetics*; D003078:Colchicine / Q000633:toxicity*; D006224:Cricetinae; D003412:Cricetulus; D004305:Dose-Response Relationship, Drug; D005260:Female; D006168:Guinea Pigs; D008297:Male; D051379:Mice; D016296:Mutagenesis; D051381:Rats; D013045:Species Specificity
chemical_list: D003078:Colchicine