概括
弱酸性药物,如酸,可能会通过在早期胚胎中积累而导致出生缺陷. 这是因为胚胎发生了这种情况.
科学领域:
- 甲状腺学 甲状腺学
- 发育毒理学 发展毒理学
- 药理学 药理学是指药理学的学科.
背景情况:
- 在已知的11种人类原体中,有8种是弱酸,这表明酸度是药物诱导出生缺陷的关键因素.
- 许多经过测试的酸性化合物在动物模型中表现出产性,加强了酸性和发育性毒性之间的联系.
研究的目的:
- 研究药物酸度和胚胎细胞内pH值 (pHi) 在产性中的作用.
- 为了确定弱酸性药物是否会在早期胚胎中积累,因为它的pHi比母体血高.
主要方法:
- 使用二甲积累测量小鼠和老鼠的胚胎pHi.
- 评估了在胚胎组织中瓦尔酸,瓦尔普罗米德和埃索苏西米德的积累.
- 胚胎pHi与晚期妊娠和药物暴露水平相关的变化.
主要成果:
- 在小鼠和大鼠中发现胚胎pHi的pH值高于母体血pH值.
- 产卵性弱酸,酸及其在胚胎组织中积累的代谢物,与中性化合物不同.
- 胚胎pHi随着怀孕而下降,同时减少了酸暴露.
结论:
- 弱酸性药物的物理化学特性有助于它们在早期胚胎中的积累.
- 早期胚胎的相对较高的细胞内pH值是酸性药物产性的一个关键因素.
- 药物的酸度是产生毒性的重要决定因素,特别是在胚胎发育早期.
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