毒理性
自然发生的植物酚类化合物,具有抗突变和抗癌活性,在实验中测试了它们抑制强效肿瘤促进剂12-O-十四烷基佛波醇-13-醋酸(TPA)在小鼠表皮中生物化学和生物学效果的能力。当局部应用于小鼠皮肤时,单宁酸(TA)、鞣花酸以及几种没食子酸衍生物均能抑制TPA诱导的鸟氨酸脱羧酶活性、过氧化氢产生和DNA合成,这三个都是皮肤肿瘤促进的生物化学标志物。此外,在使用两步启动-促进协议的实验中,同样的酚类化合物也抑制了由TPA促进的皮肤肿瘤的发生率和产量。
Naturally occurring plant phenols with antimutagenic and anticarcinogenic activities were tested for their abilities to inhibit the biochemical and biological effects of the potent tumor promoter 12-O-tetradecanoyl-phorbol-13-acetate (TPA) in mouse epidermis in vivo. When applied topically to mouse skin, tannic acid (TA), ellagic acid, and several gallic acid derivatives all inhibit TPA-induced ornithine decarboxylase activity, hydroperoxide production, and DNA synthesis, three biochemical markers of skin tumor promotion. Moreover, in the two-step initiation-promotion protocol, the same phenolic compounds also inhibit the incidence and yield of skin tumors promoted by TPA.
来源:Hazardous Substances Data Bank (HSDB)