相关实验视频
Updated: Jul 30, 2026

08:16
Neonatal Cardiac Scaffolds: Novel Matrices for Regenerative Studies
Published on: November 5, 2016
7.7K
自组织的人类心脏组合体与自主和发育相关的心脏神经峰衍生的组织
bioRxiv : the preprint server for biology
|December 23, 2024
概括
这项研究开发了一种人类心脏组合体模型,用于研究心脏发育中的神经细胞 (NCC). 早期接触抗抑郁药物,如帕洛克,会影响NCC发育和心脏功能.
科学领域:
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
- 心血管研究研究心血管研究
背景情况:
- 神经细胞 (NCC) 对心脏发育至关重要,它们的异常会导致先天性心脏缺陷.
- 研究人类早期心脏NCC发育是具有挑战性的,因为复杂性和时间.
- 现有的模型不能完全回顾人类心脏NCC的整合和功能.
研究的目的:
- 开发和验证人类心脏组合体模型,以在体外研究心脏NCC.
- 调查早期环境因素,如抗抑郁药对心脏NCC发育的影响.
- 建立一个用于药物查和理解先天性心脏缺陷的平台.
主要方法:
- 从诱导的多能干干细胞生成人类心脏组合体.
- 心脏NCC迁移,分化和整合的体外复习.
- 转录组分析以评估NCC在发育过程中的分子变化.
- 功能评估NCC衍生神经元及其与心肌细胞的相互作用.
主要成果:
- 心脏组合物在与发育相关的阶段成功地整合了人类心脏NCC.
- NCCs迁移,分化为功能神经元和质细胞,并促进了外流通道介质细胞.
- 这些NCC获得了心脏衍生分子特征,并与心肌细胞形成了功能性副交感连接.
- 暴露于帕洛克赛丁破坏了NCC分化,导致内置和心脏功能受损.
结论:
- 人类心脏组合体模型准确地回顾了心脏NCC的发育和功能在体外.
- 这种模型对研究先天性心脏缺陷和药物暴露对胚胎心脏发育的影响有价值.
- 早期暴露于抗抑郁药物可能会对心脏NCC的发育和功能产生负面影响,突出潜在的风险.
相关概念视频
Functional Brain Systems: Reticular Formation
The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
Sympathetic Division of the ANS
The sympathetic division of the autonomic nervous system (ANS) plays a crucial role in preparing the body for stress, physical activity, and increased energy demands. This division activates the "fight-or-flight" response, enabling individuals to respond effectively to challenging situations.
Originating in the thoracic and lumbar spinal cord segments, the preganglionic fibers of the sympathetic division exit the spinal cord through the white ramus communicans. They then enter the sympathetic...
Originating in the thoracic and lumbar spinal cord segments, the preganglionic fibers of the sympathetic division exit the spinal cord through the white ramus communicans. They then enter the sympathetic...
Heart Valves
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Conduction System of the Heart
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
Regulation of Heart Rates
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
Development of the Heart
The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...

