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诱导复极异常的药物会在斑马鱼中引起心梗塞
David J Milan1, Travis A Peterson, Jeremy N Ruskin
1Cardiovascular Research Center and Cardiology Division, Massachusetts General Hospital, Boston 02129, USA.
Circulation
|March 19, 2003
概括
斑马鱼的测试可以预测药物诱导的QT延长,这是一个危险的心律问题. 这种高通量方法可以识别导致复极异常的药物,改善临床前安全测试.
科学领域:
- 心血管药理学心血管药理学
- 斑马鱼模型 斑马鱼模型
- 药物安全评估 药物安全评估
背景情况:
- 药物诱导的QT延长和torsades de pointes是重大的临床挑战.
- 现有的临床前试验 (体外和体内) 在生物复杂性,成本和吞吐量方面存在局限性.
- 需要新的方法来可靠地预测药物诱导的复极化异常.
研究的目的:
- 评估斑马鱼 (Danio rerio) 作为用于识别导致QT延长的药物的高通量模型的实用性.
- 评估药物对斑马鱼心率的影响与人类已知的QT延长负债之间的相关性.
- 用已知的药物相互作用和遗传操纵验证斑马鱼试验.
主要方法:
- 选100个小分子对斑马鱼心率的影响.
- 在斑马鱼试验中测试23种已知的QT延长药物.
- 使用微注射来评估吸收的虚假阴性结果的调查.
- 执行斑马鱼KCNH2正义的反意义"敲击".
- 复制已知的药物相互作用 (氨酸/cisapride,氨酸/terfenadine).
主要成果:
- 已知会导致人类的QT延长的药物在斑马鱼中持续诱导胸和AV阻塞.
- 在23种 (96%) 化合物中,22种导致复极化异常的化合物在试验中呈阳性.
- 吸收不良在五分之四的案例中导致了假阴性结果.
- 斑马鱼KCNH2倒置证明了剂量依赖的胸,证实了重极化电流的作用.
- 经典的药物相互作用在斑马鱼模型中成功复制.
结论:
- 斑马鱼试验是一种有希望的,简单的,高通量方法,用于临床前检测药物诱导的复极异常.
- 这种模型在当前的体外和体内测试中具有优势,因为它的吞吐量和生物相关性.
- 斑马鱼的遗传处理性允许未来探索影响药物反应的遗传因素.
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