Antimutagenic effect of crown ethers on heavy metal-induced sister chromatid exchanges

被引:7
作者
Cai, MY [1 ]
Arenaz, P [1 ]
机构
[1] Univ Texas, Dept Biol Sci, El Paso, TX 79968 USA
关键词
D O I
10.1093/mutage/13.1.27
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Macrocyclic polyethers (crown ethers) are a family of compounds that possess the ability to complex with and transport metal ions across membranes. Because of their unique ionophoric characteristic, they have wide application in industry and research, chemistry and biology, In the current investigation the relationship between heavy metal mutagenesis and crown ether co-mutagenicity and/or antimutagenicity in mammalian cells has been examined using sister chromatid exchange (SCE) as the cytogenetic ehd point. Chinese hamster ovary cells were treated with lead or cadmium, with and without selected crown ethers. Several genotoxic end points, including SCEs were scored and statistically compared. We report here that most of the crown ethers studied had little or no influence on lead- or cadmium-induced SCEs or chromosome aberrations. On the other hand, the substituted crown ether dicyclohexyl 21-crown-7 significantly decreased both spontaneous and metal-induced SCE frequencies, suggesting that this crown ether may possess antimutagenic activity.
引用
收藏
页码:27 / 32
页数:6
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