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相关概念视频

Accessory Organs01:31

Accessory Organs

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Accessory organs are those that participate in the digestion of food but do not come into direct contact with it like the mouth, stomach, or intestine do. Accessory organs secrete enzymes into the digestive tract to facilitate the breakdown of food.
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RNA Polymerase II Accessory Proteins02:36

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Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
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C4 Pathway and CAM01:27

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Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
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Accessory Structures of the Eye01:17

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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Cytoskeletal Accessory Proteins01:13

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The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton cannot function independently and depend on the accessory or ancillary proteins to effectively carry out their function. Accessory proteins associate with cytoskeletal filaments and their monomers, aiding filament formation and function. They also help in the cross-communication among cytoskeletal filaments. Cytoskeletal accessory proteins are...
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Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
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使用多个辅助途径的上心动脉.

Takumi Yamada1

  • 1UF Health Cardiovascular Center University of Florida College of Medicine Jacksonville Florida USA.

Journal of arrhythmia
|January 29, 2026
PubMed
概括
此摘要是机器生成的。

在His束切除后,观察到三例涉及三条辅助通路 (AP) 的心房回转性心跳动 (AVRT) 病例. 两台AVRT使用两个右侧AP反向旋转,而第三台则通过左侧AP进行逆向传导和通过两个右侧AP进行前向传导.

关键词:
附带路径是辅助路径.导管切除 导管切除 导管切除 导管切除多个多个多个多个多个多个多个多个.超心室性心力衰竭 (超心室性心力衰竭)

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科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 心脏节律失常症 心脏节律失常症

背景情况:

  • 房回旋性心跳动脉 (AVRTs) 通常与辅助通路 (APs) 相关.
  • 之前对His束的切除可以改变心跳动脉的电生理基质.
  • 涉及多个AP的复杂AVRT存在诊断和治疗方面的挑战.

研究的目的:

  • 描述三种不同的AVRT发生在他的捆绑消除后的机制.
  • 分析多个辅助途径在复杂的心跳动形成中的作用.
  • 为了阐明AVRT中的导电模式,先前进行了他的捆绑.

主要方法:

  • 对患有复杂上心室上心动脉动症的患者的病例序列分析.
  • 电生理学研究,绘制辅助通路功能和心跳动脉回路的地图.
  • 通过多个辅助路径分析逆行和逆行传导特性.

主要成果:

  • 在患者中发现了三种不同的AVRT,这些患者先前已经切除了他的捆.
  • 两个AVRT展示了两个右侧辅助路径与反向旋转激活的回流电路.
  • 第三个AVRT涉及通过左侧辅助通路进行逆向导电和通过两条右侧辅助通路进行前向导电.

结论:

  • 复杂的AVRT可以在捆绑切除后持续或出现,利用剩余的辅助途径.
  • 多个辅助路径可以支持具有各种传导模式的回流电路,包括反向旋转和联合前向/逆向传导.
  • 了解这些复杂的机制对于有效管理耐火性脑上高心率至关重要.