Regulation of Endothelial Cell Proliferation and Apoptosis by Cyclic Pressure

Regulation of Endothelial Cell Proliferation and Apoptosis by Cyclic Pressure
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循环压力对内皮细胞增殖和凋亡的调节

DOI:
10.1114/1.1458595
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发表时间:
2002
影响因子:
3.8
通讯作者:
R. Bizios
R. Bizios
中科院分区:
工程技术2区
文献类型:
--
作者:
H. Shin;M. Gerritsen;R. Bizios

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本研究观察了人脐静脉内皮细胞(HUVECs)在含1%FBS和0.04%牛脑提取物(BBE)的199培养液(低血清/生长因子条件)或10%FBS和0.4%BBE(正常血清/生长因子条件)条件下,在1 Hz、正弦压力(60/20、100/60和140/100 mm Hg/mm Hg)作用下24 h的增殖和凋亡反应。对照组为HUVEC,维持在0.2 mm Hg压力下,其他条件相似。在低血清/生长因子条件下,HUVEC暴露于1赫兹60/20毫米汞/毫米汞的循环压力下24小时,细胞总数密度增加,细胞凋亡率增加,DNA合成增加。在正常血清/生长因子条件下,HUVEC暴露于60/20或100/60 mm Hg/mm Hg循环压力下,DNA合成增加,但对细胞密度和细胞凋亡指数无明显影响。人脐静脉内皮细胞暴露于140/100毫米汞/毫米汞后,在低血清/生长因子条件下,细胞死亡率降低。在正常血清/生长因子条件下,140/100 mm Hg/mm Hg循环压力下的HUVEC DNA合成减少。因此,内皮细胞通过以平均压力选择性的方式改变细胞的增殖和凋亡来感知和响应生理水平的循环压力。©2002生物医学工程学会。 PAC2002:8717Ee、8714Gg、8715La、8719 Uv
AbstractThe present study investigated the proliferative and apoptotic responses of human umbilical vein endothelial cells (HUVECs) to well-defined, sinusoidal pressures (60/20, 100/60, and 140/100 mm Hg/mm Hg) at 1 Hz for up to 24 h under Media 199 containing either 1% FBS and 0.04% bovine brain extract (BBE) (low serum/growth factor conditions) or 10% FBS and 0.4% BBE (normal serum/growth factor conditions). Controls were HUVEC maintained under 0.2 mm Hg sustained pressure, but otherwise, similar experimental conditions. Under low serum/growth factor conditions, exposure of HUVEC to 60/20 mm Hg/mm Hg cyclic pressure at 1 Hz for time periods up to 24 h resulted in increases in total cell population density, apoptosis, and DNA synthesis. Under normal serum/growth factor conditions, exposure of HUVEC to either 60/20 or 100/60 mm Hg/mm Hg cyclic pressures resulted in increased DNA synthesis but did not significantly affect cell density or the apoptotic index. A reduced rate of cell death was observed in HUVEC under low serum/growth factor conditions after exposure to 140/100 mm Hg/mm Hg. Under normal serum/growth factor conditions, HUVEC exposed to 140/100 mm Hg/mm Hg cyclic pressure exhibited reduced DNA synthesis. Endothelial cells, therefore, sense and respond to physiologic levels of cyclic pressure by modifying cell proliferation and apoptosis in a mean-pressure-selective manner. © 2002 Biomedical Engineering Society. PAC2002: 8717Ee, 8714Gg, 8715La, 8719Uv
DOI: 10.1073/pnas.83.7.2114
发表时间: 1986-04-01
影响因子: 11.1
作者:
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DOI: 10.1161/01.atv.12.11.1254
发表时间: 1992-11-01
期刊: ARTERIOSCLEROSIS AND THROMBOSIS
影响因子: --
作者:
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发表时间: 1999-02-19
影响因子: 20.1
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发表时间: 1993-11-01
影响因子: 1.7
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发表时间: 1998
影响因子: 5
作者:
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