title: Induction of sister chromatid exchange by various selenium compounds in Chinese hamster cells in the presence and absence of S9 mixture.
abstract: This study was designed to investigate the effect of 3 selenium compounds, namely, sodium selenite, sodium selenide and sodium selenate on induction of sister chromatid exchange (SCE) in the Chinese hamster V79 cell line in the presence and absence of S9 mixture. The results indicated that the most potent SCE inducer in the presence of S9 mixture was sodium selenite and this was followed by sodium selenide, while in the absence of S9 mixture the most effective SCE inducer was sodium selenide which was then followed by sodium selenite. For sodium selenate, the data indicated no increase in SCE rate as compared to the control values both in the presence and absence of S9 mixture. In addition, it was observed that growth inhibition as measured by no sister chromatid differentiation or no metaphases was produced by certain doses of the compounds tested. Based on this, the compound that induced the most growth inhibition both in the presence and absence of S9 mixture was sodium selenide and this was followed by sodium selenite. For sodium selenate no growth inhibition was observed. The different capabilities of the selenium compounds tested to induce SCE were clearly demonstrated in the system employed in this study. It is felt that this effect is an important cytogenetic characteristic of these compounds, yet how this activity relates to the antimutagenic and anticarcinogenic properties of these agents is difficult to discern.
mesh_terms: D000818:Animals; D002460:Cell Line; D006224:Cricetinae; D003412:Cricetulus; D003434:Crossing Over, Genetic / Q000187:drug effects*; D003470:Culture Media; D004305:Dose-Response Relationship, Drug; D004357:Drug Synergism; D008099:Liver / Q000378:metabolism; D064586:Selenic Acid; D020887:Selenious Acid; D012643:Selenium / Q000494:pharmacology*; D018036:Selenium Compounds; D012854:Sister Chromatid Exchange / Q000187:drug effects*
chemical_list: D003470:Culture Media; D018036:Selenium Compounds; C037341:sodium selenide; D020887:Selenious Acid; D012643:Selenium; D064586:Selenic Acid