Todorova Teodora, Pesheva Margarita, Gregan Fridrich, Chankova Stephka
1 Institute of Biodiversity and Ecosystem Research , Bulgarian Academy of Sciences, Sofia, Bulgaria .
J Med Food. 2015 Apr;18(4):460-7. doi: 10.1089/jmf.2014.0050. Epub 2014 Sep 3.
The aim of this work was to analyze the antioxidant and antimutagenic/anticarcinogenic capacity of Papaver rhoeas L. water extract against standard mutagen/carcinogen methyl methanesulfonate (MMS) and radiomimetic zeocin (Zeo) on a test system Saccharomyces cerevisiae. The following assays were used: 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, quantitative determination of superoxide anion (antireactive oxygen species [antiROS test]), DNA topology assay, D7ts1 test--for antimutagenic--and Ty1 transposition test--for anticarcinogenic effects. Strong pro-oxidative capacity of Zeo was shown to correlate with its well-expressed mutagenic and carcinogenic properties. The mutagenic and carcinogenic effects of MMS were also confirmed. Our data concerning the antioxidant activity of P. rhoeas L. extract revealed that concentration corresponding to IC(50) in the DPPH assay possessed the highest antioxidant activity in the antiROS biological assay. It was also observed that a concentration with 50% scavenging activity expressed the most pronounced antimutagenic properties decreasing Zeo-induced gene conversion twofold, reverse mutation fivefold, and total aberrations fourfold. The same concentration possessed well-expressed anticarcinogenic properties measured as reduction of MMS-induced Ty1 transposition rate fivefold and fourfold when Zeo was used as an inductor. Based on the well-expressed antioxidant, antimutagenic, and anticarcinogenic properties obtained in this work, the P. rhoeas L. extract could be recommended for further investigations and possible use as a food additive.
本研究旨在分析虞美人水提取物对酿酒酵母测试系统中标准诱变剂/致癌物甲磺酸甲酯(MMS)和拟放射性博来霉素(Zeo)的抗氧化及抗诱变/抗癌能力。采用了以下检测方法:1,1-二苯基-2-苦基肼(DPPH)自由基清除活性、超氧阴离子定量测定(抗活性氧物种[抗ROS测试])、DNA拓扑分析、D7ts1测试(用于抗诱变)和Ty1转座测试(用于抗癌作用)。结果表明,Zeo的强促氧化能力与其明显的诱变和致癌特性相关。MMS的诱变和致癌作用也得到了证实。我们关于虞美人提取物抗氧化活性的数据显示,在DPPH检测中对应IC(50)的浓度在抗ROS生物检测中具有最高的抗氧化活性。还观察到,具有50%清除活性的浓度表现出最显著的抗诱变特性,使Zeo诱导的基因转换降低两倍、回复突变降低五倍、总畸变降低四倍。当以Zeo作为诱导剂时,相同浓度表现出良好的抗癌特性,以MMS诱导的Ty1转座率降低五倍和四倍来衡量。基于本研究中获得的明显的抗氧化、抗诱变和抗癌特性,虞美人提取物可推荐用于进一步研究,并可能用作食品添加剂。