Proliferation inhibition and apoptosis induction of cultured vascular smooth muscle cells after ultrasound exposure

ZHANG Junxia; et al

doi:10.13406/j.cnki.cyxb.2005.05.002

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Proliferation inhibition and apoptosis induction of cultured vascular smooth muscle cells after ultrasound exposure

更新时间：2024-01-17

- Proliferation inhibition and apoptosis induction of cultured vascular smooth muscle cells after ultrasound exposure
- Journal of Chongqing Medical University Issue 5, (2005)
- 作者机构：
  
  1. 重庆医科大学附属第二医院心内科
  2. 重庆医科大学附属第二医院心内科,重庆,400010
- 作者简介：
- 基金信息：
- DOI：10.13406/j.cnki.cyxb.2005.05.002
  CLC： R543
- Published：2005，
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[1]张俊霞,黄晶,王新,唐艺加,唐海林,王志刚.超声辐照对血管平滑肌细胞增殖和凋亡的影响[J].重庆医科大学学报,2005(05):10-13.

ZHANG Junxia, et al. Proliferation inhibition and apoptosis induction of cultured vascular smooth muscle cells after ultrasound exposure. [J]. Journal of Chongqing Medical University (5).(2005)
[1]张俊霞,黄晶,王新,唐艺加,唐海林,王志刚.超声辐照对血管平滑肌细胞增殖和凋亡的影响[J].重庆医科大学学报,2005(05):10-13. DOI： 10.13406/j.cnki.cyxb.2005.05.002.

ZHANG Junxia, et al. Proliferation inhibition and apoptosis induction of cultured vascular smooth muscle cells after ultrasound exposure. [J]. Journal of Chongqing Medical University (5).(2005) DOI： 10.13406/j.cnki.cyxb.2005.05.002.

摘要

目的:观察超声波辐照对培养的血管平滑肌细胞（VSMCs）增殖和凋亡的影响

筛选防止介入治疗后血管再狭窄的辐照参数

并探讨其机理。方法:单声源压电陶瓷超声辐照系统声强连续可调

台盼蓝排斥实验分析辐照后即刻细胞存活率;MTT比色法描述辐照后5天VSMCs的生长动力学变化;BrdU掺入法检测辐照对VSMCs S期DNA复制的影响;ELISA法检测辐照后VSMCs凋亡情况。结果:1.超声辐照对培养的VSMCs有直接杀伤作用

该作用随辐照强度和辐照时间的增加而增加

相同辐照强度和时间下

低频超声该作用更显著。2.超声辐照组较对照组VSMCs生长曲线平缓

0.705MHz组以0.5W/cm2

5min辐照最为明显。3.BrdU掺入法测定S期细胞增殖发现

0.705MHz

0.5W/cm2

5min辐照组BrdU%低于对照组（40.5%±6.8%vs55.8%±3.3%

P<0.05）。4.0.705MHz

0.5W/cm2

5min辐照的凋亡富积因子与阳性对照相比为1.851±0.087vs1.924±0.074

P=0.836。结论:0.705MHz

0.5W/cm2

5min超声辐照在无明显杀伤细胞的情况下诱导培养的VSMCs凋亡

阻止VSMCs S期DNA复制

提示USE是一种潜在的治疗介入治疗后血管再狭窄的手段。

Abstract

Objective:To observe the effects of ultrasound exposure(USE) on proliferation and apotosis of vuscalur smooth muscle cells(VSMCs) and to screen out the optimum parameters of USE and(to)discuss its mechanism.Methods:Ultrasound device was made of mono-source of piezoelectric ceramics.Guided by the result of Trypan Blue cell count

the optimum exposure dosage was determined by MTT cell growth curve in 5 days.BrdU incorporation was used to show changes of S phase DNA synthesis after USE.Apoptosis was detected using ELISA 4 hours later after USE.Results:USE had direct cytotoxic effect on cultured VSMCs. The effect was intensified as the duration or intensity increased.At the same duration and intensity level

the effect was stronger in lower frequency group.Growth curves in 5 days were flattened in USE groups especially in 0.705MHz

0.5w/cm~2

5min exposure.BrdU% results indicated that with 0.705MHz

0.5W/cm~2

5min USE

BrdU% against control was 40.5±6.8% vs 55.8±3.3%

P<0.05.Cell Death Detection ELISA assay showed apoptosis enrichment factor in 0.705MHz

0.5W/cm~2

5min group comparing with positive control was 1.851±0.087 vs 1.924±0.074

P=0.836.Conclusion:After 0.705MHz

0.5W/cm~2

5min USE

VSMCs apoptosis was induced and S phase DNA synthesis decreased without obvious immediate cell death

which suggests USE had the potential as an anti-restenosis therapy.

关键词

血管平滑肌细胞超声增殖凋亡

Keywords

vascular smooth muscle cellsultrasoundproliferationapoptosis

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Department of Gastrointestinal Surgery，The Third Affiliated Hospital of Zunyi Medical University/ The First People’s Hospital of Zunyi

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