使用外周血液单核细胞来确定急性缺血性中风的基因表达特征:一个试点调查
David F Moore1, Hong Li, Neal Jeffries
1Section of Neurology, University of Manitoba, Winnipeg, Manitoba, Canada.
Circulation
|January 5, 2005
概括
研究人员在急性缺血性中风患者的外周血液单核细胞 (PBMC) 中发现了一种独特的基因表达特征. 这一发现为非侵入性中风诊断和了解身体对中风的反应提供了潜力.
科学领域:
- 神经科学是一个神经科学.
- 基因组学就是基因组学.
- 免疫学 免疫学 免疫学
背景情况:
- 直接脑活检是侵入性的,很少用于急性中风诊断.
- 研究像血液细胞这样的外围生物标志物提供了一种不那么侵入性的方法.
- 急性缺血性中风会引发在周围血液中检测到的系统性变化.
研究的目的:
- 确定急性缺血性中风患者的外周血液单核细胞 (PBMC) 中是否存在系统性基因表达特征.
- 为了确定与急性缺血性中风相关的特定基因或基因模式.
- 评估这些基因配置文件对于中风分类的潜力.
主要方法:
- 氧核酸微阵列被用来比较20名缺血性中风患者和20名对照者的PBMC中的基因表达.
- 定量实时聚合酶连锁反应 (PCR) 验证了9个上调基因的表达.
- 用微阵列预测分析 (PAM) 开发了一个由22个基因组成的小组,以提高分类的准确性.
主要成果:
- 190个基因显示中风患者和对照人群之间存在显著差异.
- 升级基因与白细胞激活,缺氧和血管修复有关.
- 22基因小组在独立的队列中实现了78%的灵敏度和80%的特异性来对中风进行分类.
- 基因表达特征显示部分独立于传统的中风风险因素.
结论:
- 在急性缺血性中风期间,PBMCs中的基因表达特征改变是可以证明的.
- 一些已识别的基因表达变化表明了对中枢神经系统缺血的适应性反应.
- 作为急性缺血性中风的非侵入性诊断工具,PBMC基因表达分析具有前景.
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