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相关概念视频

Gap Junctions01:37

Gap Junctions

Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
Transducer Mechanism: G Protein–Coupled Receptors01:30

Transducer Mechanism: G Protein–Coupled Receptors

G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical, 7TM, or...
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
iChip01:24

iChip

The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...
Microbial Biosensors01:17

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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相关实验视频

Updated: Jun 29, 2026

A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.
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多功能水凝作为无线短暂心脏起器的生物接口.

Qiang Zhang1, Guangyao Zhao1, Zhiyuan Li1

  • 1Department of Biomedical Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong, China.

Biosensors & bioelectronics
|July 26, 2024
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新的接口水凝来改进无线,可生物吸收的短暂起器. 这种新材料增强了组织与器件的结合,电性能和抗感染能力,使心脏节奏更安全.

关键词:
生物电-组织接口接口心脏节奏是如何发生的电刺激是一种电气刺激.多功能水凝多功能水凝暂时的心脏起器 心脏起器

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科学领域:

  • 生物材料科学 生物材料科学
  • 生物医学工程 生物医学工程
  • 心脏病学 心脏病学

背景情况:

  • 传统的临时心脏起器 (TCP) 有局限性,包括刚性,电池依赖性和需要手术检索,导致并发症.
  • 现有的无线和可生物吸收的临时起器面临着组织设备接口的挑战,包括粘附性差,机械性能不匹配和感染风险.

研究的目的:

  • 开发一个多功能接口水凝 (MIH),以克服当前短暂起器的局限性.
  • 提高组织设备接口的电性能,机械兼容性,粘附性和抗菌性质.

主要方法:

  • 一种新的多功能接口水凝 (MIH) 被合成和表征.
  • MIH与无,无电池,无线短暂心脏起器集成.
  • 评估了MIH的机械性能,粘附强度,电性能和杀菌作用.
  • 评估了集成起器系统对跳动的心脏组织的性能.

主要成果:

  • 开发的MIH表现出卓越的电气性能,可以有效地交换能量.
  • 液凝的机械强度与自然的心脏组织相当 (拉伸强度: ~30 kPa,剪切强度: ~30 kPa).
  • 实现了强大的粘附性能 (剥离强度:~85kPa),确保了稳定的设备-组织固定.
  • MIH显示出显著的杀菌作用,抑制细菌生长,降低感染风险.

结论:

  • 多功能接口水凝有效地解决了暂时起器技术的关键局限性.
  • 集成的无线短暂起器系统显示稳定,合规粘附和精确的心脏刺激.
  • 这一创新对下一代植入式医疗器械和生物电子组织接口具有重大潜力.