期刊
BRITISH JOURNAL OF PHARMACOLOGY
卷 179, 期 13, 页码 3325-3329出版社
WILEY
DOI: 10.1111/bph.15828
关键词
cytochrome P450; ductus arteriosus; endothelin; hydrogen peroxide; oxygen sensing; potassium channel
This article discusses the relationship between closure of the ductus arteriosus and blood oxygen tension. It proposes two different schemes and suggests that their combined activation is necessary for a complete contraction. This has significant implications for understanding the operation of the ductus and future translational research.
Closure of the ductus arteriosus at birth is known to be related to the physiological rise in blood oxygen tension. Two main schemes have been proposed to explain the peculiar contraction of the ductus to oxygen, and their function is based on distinct sensor-effector complexes. Specifically, these schemes comprise a cytochrome P450 monooxygenase-endothelin complex or, alternatively, a mitochondrial redox mechanism-voltage gated potassium channel complex. However, it is not clear how these systems may relate to the closure process. Here, it is proposed that they operate jointly within a single functional entity, with their combined activation being required for a full-fledged contraction of the vessel to oxygen. This arrangement is thought to ensure a smooth transition from the powerful relaxant mechanism that is evident through the early postnatal period. Validation of this concept would not only settle a central question in the operation of the ductus but may also afford a broader perspective in any future translational research.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据