Hereditary bleaching ofEuglena gracilis affected by 3-(5-nitro-2-furyl)acrylic acid

A genotoxicological study of the new local anaesthetic carbamate derivatives carbisocaine, heptacaine and pentacaine

The potential mutagenic activity of three carbamate derivatives with local anaesthetic activity was investigated. Genotoxic activity was observed after application of Carbisocaine on Euglena gracilis, whereas no activity was detected by Carbisocaine, Heptacaine and Pentacaine on Salmonella typhimurium, Escherichia coli and Drosophila melanogaster.

Effect of elevated temperature on genotoxicity of chemotherapeuticals toward Euglena gracilis

A collection of 20 compounds was tested for their ability to induce a permanent loss of chloroplasts from Euglena gracilis cells under conditions increasing the sensitivity of the flagellate to genotoxic compounds, viz. in the resting medium and at an elevated temperature. Streptomycin, dihydrostreptomycin, gentamicin, kanamycin and partially chloramphenicol exhibited mutagenic effects. Eight antibiotics eliminated chloroplasts only from growing cultures and seven antibiotics did not induce the mutation at all.