蜕皮甾酮对人脐静脉内皮细胞增殖的影响

目的：研究一种植物成分——蜕皮甾酮（ＥＤＳ）是否能影响人脐静脉血管内皮细胞（ＨＵＶＥＣ）增殖。方法：采用血管内皮细胞（ＶＥＣ）体外培养的方法，以ＭＴＴ法及流式细胞术观察细胞增殖的情况。结果：（１）ＤＥＳ能够影响ＨＵＶＥＣ代谢ＭＴＴ；（２）ＤＥＳ的浓度对ＨＵＶＥＣ的ＭＴＴ代谢物—ｆｏｒｍａｚａｎ的生成量有影响：在２５～４００ｍｇ·Ｌ－１，ＥＤＳ促进线粒体代谢ＭＴＴ、形成ｆｏｒｍａｚａｎ，并且在２００ｍｇ·Ｌ－１时可使ｆｏｒｍａｚａｎ的形成量达到最高值；在８００ｍｇ·Ｌ－１以上浓度时，ｆｏｒｍａｚａｎ的形成量减少，并低于正常培养的ＨＵＶＥＣ的ｆｏｒｍａｚａｎ的形成量。（３）在２００ｍｇ·Ｌ－１时，流式细胞术显示，ＥＤＳ能够影响ＨＵＶＥＣ的细胞周期：ＥＤＳ可促进ＨＵＶＥＣ由静止期和（或）ＤＮＡ合成前期进入ＤＮＡ合成期、由ＤＮＡ合成期进入ＤＮＡ合成后期和（或）分裂期。结论：ＥＤＳ能够刺激ＶＥＣ分裂、增殖，并且ＶＥＣ的增殖状况与ＥＤＳ的浓度有关。

Effect of ecdystrone on proliferation of human umbilical vein endothelial cells

Objective\ To study whether ecdysterone (EDS) could affect preliferation of human umbilical vein endothelial cells (HUVEC). Methods\ The experiments were performed in culture of vascular endothelial cells (VEC) in vitro and in method of MTT measurement and flow cytometry for observing preliferation of cells. Results\ (1) EDS was able to affect the metabolism of MTT of HUVEC;(2) EDS exhibited a dose dependent effect on output of formazan waste product of MTT: EDS accumulated formation of formazan in 25～400 mg·L -1 , and reduced the output of formazan above 800 mg·L -1 ;(3) EDS increased proliferation index of HUVEC in dosage of 200 mg·L -1 . Conclusions\ EDS is able to stimulate preliferation of VEC dosage depentently.