Objective To study the new triterpene glycosides from sea cucumber Holothuria scabra with cytotoxic activity. Methods Triterpene glycosides from H. scabra were separated and purified by chromatography on DA-101, silic...Objective To study the new triterpene glycosides from sea cucumber Holothuria scabra with cytotoxic activity. Methods Triterpene glycosides from H. scabra were separated and purified by chromatography on DA-101, silica gel, and reversed-phase silica gel column, as well as RP-HPLC. Their structures were elucidated on the basis of spectral data and chemical evidence. Results Three triterpene glycosides were identified as scabraside D (1), fuscocineroside C (2), and 24-dehydroechinoside A (3). Their inhibition on P-388, A549, MKN-28, HCT116, and MCF-7 cells were significant. Conclusion Scabraside D (1) is a new triterpene glycoside, and compounds 2 and 3 are isolated from H. scabra for the first time. The glycosides 1-3 show the in vitro cytotoxicity against five human tumor cell lines in comparison to 10-hydroxycamptothecin.展开更多
以受精后24 h孵化出的糙海参(Holothuria scabra)耳状幼体为研究对象,探讨养殖水体不同量光合细菌对糙海参苗期生长、成活、消化道消化酶活性和养殖水体水质变化的影响。试验设4个处理,光合细菌(浓度为1×1011cfu·m L-1)添加...以受精后24 h孵化出的糙海参(Holothuria scabra)耳状幼体为研究对象,探讨养殖水体不同量光合细菌对糙海参苗期生长、成活、消化道消化酶活性和养殖水体水质变化的影响。试验设4个处理,光合细菌(浓度为1×1011cfu·m L-1)添加量分别是0 m L(组1,对照组)、50 m L(组2)、100 m L(组3)和150 m L(组4),每个处理设3个重复,每个重复放养4×104尾幼体于室内水泥池(5 m×3 m×1.5 m)中,试验周期为41 d。结果表明,添加光合细菌组的糙海参出苗体质量和成活率均显著高于对照组(P<0.05),而组3和组4的体质量和成活率又明显优于组2(P<0.05),组3和组4之间的差异不显著(P>0.05)。添加光合细菌还能不同程度地影响糙海参苗体消化道蛋白酶、淀粉酶和纤维素酶的活性,试验组3种酶的活性均显著高于对照组(P<0.05),而组3和组4的蛋白酶活性和纤维素酶活性显著高于组2(P<0.05),淀粉酶活性在3个试验组之间无显著差异(P>0.05)。在试验第10天后,各试验组氨氮(NH3-N)和亚硝酸盐含量显著低于对照组(P<0.05),在试验第20天后,各试验组化学需氧量(COD)的值显著低于对照组(P<0.05),而总磷(TP)的差异不大(P>0.05)。表明光合细菌可以促进糙海参幼体的生长,提高消化酶活性和成活率,并改良育苗水体水质。展开更多
基金National High-Tech Research and Development Project (863 Project, 2006AA09Z417)National Natural Science Foundation of China (20772155)
文摘Objective To study the new triterpene glycosides from sea cucumber Holothuria scabra with cytotoxic activity. Methods Triterpene glycosides from H. scabra were separated and purified by chromatography on DA-101, silica gel, and reversed-phase silica gel column, as well as RP-HPLC. Their structures were elucidated on the basis of spectral data and chemical evidence. Results Three triterpene glycosides were identified as scabraside D (1), fuscocineroside C (2), and 24-dehydroechinoside A (3). Their inhibition on P-388, A549, MKN-28, HCT116, and MCF-7 cells were significant. Conclusion Scabraside D (1) is a new triterpene glycoside, and compounds 2 and 3 are isolated from H. scabra for the first time. The glycosides 1-3 show the in vitro cytotoxicity against five human tumor cell lines in comparison to 10-hydroxycamptothecin.
文摘以受精后24 h孵化出的糙海参(Holothuria scabra)耳状幼体为研究对象,探讨养殖水体不同量光合细菌对糙海参苗期生长、成活、消化道消化酶活性和养殖水体水质变化的影响。试验设4个处理,光合细菌(浓度为1×1011cfu·m L-1)添加量分别是0 m L(组1,对照组)、50 m L(组2)、100 m L(组3)和150 m L(组4),每个处理设3个重复,每个重复放养4×104尾幼体于室内水泥池(5 m×3 m×1.5 m)中,试验周期为41 d。结果表明,添加光合细菌组的糙海参出苗体质量和成活率均显著高于对照组(P<0.05),而组3和组4的体质量和成活率又明显优于组2(P<0.05),组3和组4之间的差异不显著(P>0.05)。添加光合细菌还能不同程度地影响糙海参苗体消化道蛋白酶、淀粉酶和纤维素酶的活性,试验组3种酶的活性均显著高于对照组(P<0.05),而组3和组4的蛋白酶活性和纤维素酶活性显著高于组2(P<0.05),淀粉酶活性在3个试验组之间无显著差异(P>0.05)。在试验第10天后,各试验组氨氮(NH3-N)和亚硝酸盐含量显著低于对照组(P<0.05),在试验第20天后,各试验组化学需氧量(COD)的值显著低于对照组(P<0.05),而总磷(TP)的差异不大(P>0.05)。表明光合细菌可以促进糙海参幼体的生长,提高消化酶活性和成活率,并改良育苗水体水质。