癌变·畸变·突变 ›› 1998, Vol. 10 ›› Issue (6): 352-354.doi: 10.3969/j.issn.1004-616x.1998.06.006

• 论著 • 上一篇    下一篇

17β- 雌二醇和低密度脂蛋白对内皮细胞表达白细胞介素6 和肿瘤坏死因子的影响

马丽萍1  张国元2  吴宗贵2   

  1. 1第二军医大学长海医院心内科 上海200433  2 第二军医大学长征医院心内科 上海 200003
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-11-30 发布日期:1998-11-30

EFFECTS OF 17β - ESTRATIAL AND LOW DENSITY LIPOPROTEIN ON CULTURED ENDOTHELIAL CELLS TO EXPRESSION OF INTERLEUKIN- 6 AND TUMOR NECROSIS FACTOR

Ma Liping , Zhang Guoyuan , Wu Zonggui   

  1. Chang Zheng Hospital , Second Military Medical University , S hanghai  200003
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-11-30 Published:1998-11-30

摘要: 本文研究低密度脂蛋白(LDL) 对内皮细胞表达促炎性细胞因子白细胞介素6 ( IL - 6) 和肿瘤坏死因子( TNF) 的影响及17β- 雌二醇的保护作用。以体外培养的人脐静脉内皮细胞(HUVEC) 为模型。将LDL 与HUVEC 孵育及HUVEC 经它莫西芬( Tamoxifen) 和/ 或17β- 雌二醇预处理后,再与LDL 孵育,检测培养液中IL - 6 和TNF 活性。发现LDL 可明显增加内皮细胞表达IL - 6 和TNF。LDL 100μg/ ml 时, TNF 为0. 74 ±0. 09 (ng/ ml) , IL - 6 为91164 ±7139 (u/ ml) ,与对照组相比P < 0101 ;经17β2雌二醇预处理后,细胞在LDL 作用下, IL - 6 和TNF 活性与对照组相比无显著差异( P > 0105) ;它莫西芬和17β- 雌二醇处理后,再加DL ,IL - 6 和TNF 活性增高,与对照组相比有显著差异。实验结果表明:LDL 可促进血管内皮细胞高表达促炎性细胞因子IL - 6 和TNF。雌激素可明显抑制LDL 引起的内皮细胞高表达IL - 6 和TNF ,从而产生对内皮细胞的保护作用。此作用可被它莫西芬拮抗。因此雌激素保护内皮细胞的作用,可能部分通过内皮细胞上雌激素受体。

关键词: 内皮细胞, 雌激素, LDL, IL - 6, TNF

Abstract: A study on the effect s of 17β- est radiol against the expression of interleukin - 6 ( IL -6) and tumor necrosis factor ( TNF) induced by low - density lipoproteins(LDL) on vascular endothelial cells (VECs) was carried out . The level of IL - 6 and TNF were measured in cultured human umbilical vein endothelial cells. LDL significantly raise the level of IL - 6 and TNF in cultured endothelial cells. In LDL 100μg/ ml , TNF activity was 0. 74 ±0. 09 (ng/ ml) and IL - 6 activity was 91. 64 ±7. 39 (u/ ml) . 17β- est radiol can significantly decrease the expression of IL - 6 and TNF induced by LDL in cultured endothelial cells. However , when tamoxifen and 17β-est radiol were added at the same time , the level of IL - 6 and TNF significantly increased compared with that in the cont rol group ( P < 0. 05) . These indicate that the protection of 17β-est radiol on VECs may be through est rogen receptor partially.

Key words: endothelial cells, est rogen, low - density lipoproteins, interleukin - 6, tumor necrosis factor