Chromosome malsegregation induced by the rodent carcinogens acetamide, pyridine and diethanolamine in Drosophila melanogaster females

• Published in: Mutation research Vol. 539; no. 1; pp. 137 - 144
• Main Authors: Muñoz, Enzo R, Barnett, Beatriz Mazar
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 05.08.2003; Elsevier
• Subjects: Acetamide; Acetamides - toxicity; Aneuploidy; Animals; Biological and medical sciences; Biological effects of radiation; Carcinogens - toxicity; Diethanolamine; Drosophila melanogaster; Drosophila melanogaster - drug effects; Drosophila melanogaster - genetics; Ethanolamines - toxicity; Female; Fundamental and applied biological sciences. Psychology; Ionizing radiations; Mutagens - toxicity; Nondisjunction; Nondisjunction, Genetic; Oocytes - drug effects; Pyridine; Pyridines - toxicity; Tissues, organs and organisms biophysics; Aneuploidy; Diethanolamine; Nondisjunction; Pyridine; Acetamide; Drosophila melanogaster; Carcinogen; Arthropoda; Insecta; Chromosome; Female; Invertebrata; Diptera; Drosophilidae
• ISSN: 1383-5718; 0027-5107; 1879-3592
• DOI: 10.1016/S1383-5718(03)00158-X

The effect of the rodent carcinogens acetamide (AC), pyridine (PY) and diethanolamine (DEA) on meiotic chromosome segregation was assessed in 4-day-old Drosophila melanogaster females. After oral treatment with 0.05, 0.1, 0.2 and 0.3% PY; 0.5, 1, 1.5, 2 and 4% AC; or 5, 10, 20, 40 and 80% DEA, the females were mated to 7-day-old males and three 24 h broods were obtained to sample cells exposed mainly as mature oocytes (brood I), and nearly mature oocytes (brood II) with an increasing proportion of early oocytes (brood III). Viability was not affected at the two (PY) or three (AC, DEA) lowest concentrations, decreasing thereafter. PY increased the frequency of nondisjunction exclusively in brood II suggesting its interaction with specific targets. AC and DEA (the most active of the three) induced similar frequencies of nondisjunction in all broods suggesting unspecific cell division perturbations probably due to toxicity. No clear dose effect relationships were observed.