Alternariol caused DNA single-strand breakage. Conversion of the closed circular double-stranded supercoiled DNA (pBR 322) to the nicked circular form and linear form was used to investigate the effect of extracts of ...Alternariol caused DNA single-strand breakage. Conversion of the closed circular double-stranded supercoiled DNA (pBR 322) to the nicked circular form and linear form was used to investigate the effect of extracts of some Chinese medical herbs on DNA nicking induced by alternariol. Some substances in the extracts of Rhizoma polygonati (RP) and Fructus lycii (FL) were shown to protect DNA from the attack by alternariol.Some substance in the RP may bind to plasmid DNA, and this binding reduces the electrophoretic mobility of DNA. These results indicate that substances from FL and RP may be used as DNA protectors. It is possible that they play an important role in preventing cancer.展开更多
黄精皂苷(Saponin of Rhizoma Polygonati)是黄精药理作用的活性成分之一,主要包括甾体皂苷类和三萜皂苷类等79种化合物。总结了近年来黄精皂苷的提取方法;综合评价了其在调节免疫力、抗抑郁、改善记忆力、抗肿瘤、降血糖、抗炎、抑菌...黄精皂苷(Saponin of Rhizoma Polygonati)是黄精药理作用的活性成分之一,主要包括甾体皂苷类和三萜皂苷类等79种化合物。总结了近年来黄精皂苷的提取方法;综合评价了其在调节免疫力、抗抑郁、改善记忆力、抗肿瘤、降血糖、抗炎、抑菌、抗病毒等多个方面的药理活性作用。指出其发展不足,并进行了综合的展望,以期为黄精皂苷的深入研究与综合利用提供参考和理论基础。展开更多
文摘Alternariol caused DNA single-strand breakage. Conversion of the closed circular double-stranded supercoiled DNA (pBR 322) to the nicked circular form and linear form was used to investigate the effect of extracts of some Chinese medical herbs on DNA nicking induced by alternariol. Some substances in the extracts of Rhizoma polygonati (RP) and Fructus lycii (FL) were shown to protect DNA from the attack by alternariol.Some substance in the RP may bind to plasmid DNA, and this binding reduces the electrophoretic mobility of DNA. These results indicate that substances from FL and RP may be used as DNA protectors. It is possible that they play an important role in preventing cancer.
文摘黄精皂苷(Saponin of Rhizoma Polygonati)是黄精药理作用的活性成分之一,主要包括甾体皂苷类和三萜皂苷类等79种化合物。总结了近年来黄精皂苷的提取方法;综合评价了其在调节免疫力、抗抑郁、改善记忆力、抗肿瘤、降血糖、抗炎、抑菌、抗病毒等多个方面的药理活性作用。指出其发展不足,并进行了综合的展望,以期为黄精皂苷的深入研究与综合利用提供参考和理论基础。