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辛伐他汀和普罗布考对TNF-α诱导的内皮细胞凋亡的影响
引用本文:赵延恕,段纬喆,冯莉莉,吕晓玲,聂赛.辛伐他汀和普罗布考对TNF-α诱导的内皮细胞凋亡的影响[J].医学临床研究,2011,28(5):819-822.
作者姓名:赵延恕  段纬喆  冯莉莉  吕晓玲  聂赛
作者单位:中南大学湘雅二医院心内科,湖南,长沙,410011
摘    要:【目的】探讨辛伐他汀和普罗布考对TNF-α诱导人脐静脉内皮细胞(HUVEC)凋亡的影响及其影响的量效关系和时效关系。【方法】体外培养HUVES,取对数生长期的细胞分为四个组:①TNF-α干预的浓度依赖性组(Ac组)按浓度分为Acl(Ong/mL),Ac2(1ng/mL),Ac3(10ng/mL),Ac4(25ng/mL)];②TNF-α干预的时间依赖性组(At组)按时间分为Atl(Oh),At2(12h),At3(24h),At4(48h)];③10ng/mLTNF_a+不同浓度辛伐他汀干预组(B组)浓度分为B1(O μmol/L),B2(O.01 μmol/L。),B3(O.1 μmol/L。),B4(1.0t μmol/L)];④1O ng/mL TNF-a不同浓度普罗布考干预组(c组)浓度分为C1 (0 μmol/L。),C2(20 μmol/L),c3(40 μmol/L),C4(80 μmol/L)]。以上四组均干预12h后,用流式细胞术检测各组凋亡率。【结果】①Ac组凋亡率分别为:Acl(O.81±0.25%),Ac2(2.35±0.04%),Ac3(4.54±0.32%),Ac4(6.17±0.28%),各组之间存在统计学差异(P〈0.01)。②At组凋亡率分别为,Atl(0.87±o.35%),At2(4.53±0.32%),At3(7.45±1.97%),At4(10.92±1.27%),各组间存在统计学差异(P〈O.01)。③B组凋亡率分别为,B1(4.46±0.53%),B2(1.38±0.12%),B3(2.89±0.27%),B4(3.65±0.08%),各干预组与对照组之间存在统计学差异(P〈O.01)。④C组细胞凋亡率分别为,C1(4.60±0.64%),C2(2.61±0.18%),C3(2.21±0.22%),c4(1.28±0.34%),各干预组与对照组之间存在统计学差异(P〈0.01)。【结论】①TNF-α可以诱导内皮细胞凋亡,且存在浓度依赖性和时.:良赖性。②辛伐他汀可以抑制TNF-α口诱导的内皮细胞凋亡,但无浓度依赖性。③普罗布考可以抑制TNF-α诱导的内皮细胞凋亡,但无浓度依赖性。

关 键 词:斯伐他汀/药理学  普罗布可/药理学  肿瘤坏死因子  脱噬作用

Effect of Simvastatin and Probucol on Endothelial Cell Apoptosis Induced by Tumor Necrosis Factor-alpha
Institution:ZHAO Yan-shu, DUAN Wei-zhe, LV Xiao-ling,et al ( Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha 410000, China )
Abstract:Objective] To explore the effect of simvastatin and probucol in the apoptosis of umbilical vein endothelial cells (HUVECs) induced by tumor necrosis factor-alpha(TNF-α) and the dose-effect and time-effect relationship. Methods] HU- VECs were cultured in vitro. The cells for experiments were in logarithmic growth phase. Endothelial cells were divided into four groups including TNF-a concentration-dependent intervention group(Ac group) assigned to Acl group with Ong/mL, Ac2 group with lng/mL, At3 group with 10ng/mL and Ac4 group with 25ng/mL TNF-a, TNF-a time-dependent intervention group(At group) assigned to Atl group(0h), At2 group(12h), At3 group(24h) and At4 group(48h), 10ng/mL TNF-a with different concentrations of simvastatin co-intervention group(group B) assigned to B1 group(0 μmol/L), B2 group(0. 01pmol/ L), B3 group(0. 1/*mol/L) and B4 group(1.0 μmol/L), and TNF-a with different concentrations of probucol co-intervention group(group C) assigned to C1 group(0 μmol/L), C2 group(20 μmol/L), C3 group(40 μmol/L) and C4 group(80 μmol/L). Af- ter the intervention in each group for 12h, flow cytometry was used to detect cell apoptosis rate. Results] The apoptosis rate of Ac group were 0.81±0.25% (Acl), 2.35±0.04% (Ac2), 4.54±0. 32% (Ac3) and 6.17±0.28%(Ac4), respectively, and there were significant differences among groups( P d0.01). The apoptosis rate of At group were 0.87 ± 0.35 % (At1), 4. 53±0.32%(At2), 7.45±1.97%(At3) and 10.92±1.27%(At4), respectively, and there were significant differences among groups(P〈0.01). TheapoptosisrateofBgroupwere4.46±0.53%(B1), 1.38±0.12%(B2), 2.89±0.27%(B3) and 3.65±0.08% (B4), respectively, and there was significant difference between each intervention group and control group( P 〈0.01). The apoptosis rate of C group were 4.60±0.64% (C1), 2.61±0. 18% (C2), 2.21±0.22% (C3) and 1.28±0.34% (C4), respectively, and there was significant difference between each intervention group and control group (P 〈0. 01). Conclusion] TNF-a can induce the apoptosis of endothelial cells in dose-dependent and time-dependent manner. Simvastatin and probucol both can inhibit TNF-a-induced apoptosis of endothelial cells without concentration-dependent manner.
Keywords:simvastatin/PD  probucol/PD  tumor necrosis factor  apoptosis
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