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首页> 外文期刊>American Journal of Physiology >Minding the gaps that link intrinsic circadian clock within the heart to its intrinsic ultradian pacemaker clocks. Focus on 'The cardiomyocyte molecular clock, regulation of Scn5a, and arrhythmia susceptibility'
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Minding the gaps that link intrinsic circadian clock within the heart to its intrinsic ultradian pacemaker clocks. Focus on 'The cardiomyocyte molecular clock, regulation of Scn5a, and arrhythmia susceptibility'

机译:注意将心脏内在的生物钟与其内在的超心脏起搏器钟联系起来的间隙。专注于“心肌细胞分子时钟,Scn5a的调节和心律不齐的敏感性”

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摘要

A hierarchical system of clocks within cells throughout the body creates and synchronizes rhythmic functions from which life emerges. Biological circadian rhythms, linked to light and darkness in an organism's environment, are generated by transcription-translation feedback mechanisms on universal "core" clock genes, e.g., Clock, Bmall, Perl, Per2, Cryl and Cry2 (16). Clocks within the brain broadcast signals to all tissues (5). Many cell types also exhibit their "local" circadian clocks, as well as infradian and ultradian clocks that rhythmically regulate cell type-specific functions on time scales commensurate with the functions. Functional regulation by clocks range from activation-inactivation-reactivation cycles of molecules (e.g., ion channels) at millisecond scales, the heart's beating at cycles of hundreds of milliseconds, respiration at cycle of seconds, low-frequency autonomic signaling at cycles of tens of seconds, to diurnal and infradian variations of numerous body functions.
机译:遍布整个人体细胞的时钟的分层系统创建并同步起生命的节奏功能。与生物体环境中的光明和黑暗相关的生物昼夜节律,是通过通用“核心”时钟基因(例如Clock,Bmall,Perl,Per2,Cryl和Cry2)上的转录-翻译反馈机制产生的(16)。大脑中的时钟将信号广播到所有组织(5)。许多细胞类型还表现出它们的“本地”生物钟,以及在与功能相关的时间尺度上有节奏地调节特定于细胞类型的功能的红外线和超时钟。时钟的功能调节范围包括分子(例如离子通道)的激活-灭活-再激活周期(毫秒级),心脏的跳动(数百毫秒),呼吸(秒),低频自主信号(数十秒)。秒钟,以了解众多人体功能的昼夜变化。

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