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视觉彗星评分重新审视:评分彗星测试幻灯片和获得可靠结果的指南
Peter Møller1, Amaya Azqueta2, Julen Sanz-Serrano2
1Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014 Copenhagen K, Denmark.
Mutagenesis
|May 26, 2023
概括
在彗星测试中对DNA迁移的视觉评分显示了研究人员之间和内部的变化. 需要标准化,但视觉评分仍然是分析彗星测定结果的可靠方法.
科学领域:
- 遗传学和分子生物学
- 毒理学 毒理学 毒理学
- 生物技术是生物技术.
背景情况:
- 彗星测定是一种用于检测DNA损伤的敏感方法.
- 视觉评分占彗星测定分析的很大一部分.
- 视觉评分的变化可能会影响研究结果.
研究的目的:
- 评估彗星测定图像的视觉评分的研究人员内部和研究人员之间的变化.
- 为使用视觉评分的研究人员提供培训套件.
- 评估用于DNA迁移分析的视觉评分的可靠性.
主要方法:
- 11个实验室使用五类系统得分了三套彗星图像的训练集.
- 通过在不同时间间隔 (1周和6个月) 进行重复评分来评估研究人员内部的变异性.
- 通过使用在不同实验室染色和得分的预制幻灯片进一步评估研究人员间的变异性.
主要成果:
- 观察到研究人员之间存在显著的差异 (CVs从9.7%到105%不等).
- 还注意到研究人员内部的变化,随着烧伤之间的时间间隔越长 (CVs从1.3%增加到9.6%),这种变化也在增加.
- 尽管存在差异,但研究人员之间的得分存在正相关性 (r = 0.60).
结论:
- 建议进一步标准化视觉评分协议,以尽量减少变化.
- 视觉评分虽然具有可变性,但被证明是分析彗星测定中DNA迁移的可靠方法.
- 该研究提供了有价值的培训套件,以帮助研究人员在一致的视觉评分.
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