在具有挑战性的血液环境中,用于血管修复的可注射磁活性粘合剂水凝的磁性控制输送
Donglin Xie1,2, Zhuopeng Liu1,2, Zuo Pu3
1School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China.
Advanced materials (Deerfield Beach, Fla.)
|February 9, 2026
概括
一种可注射的磁活性水凝 (iMAH) 为血管修复提供了一种新的解决方案. 这种磁导水凝在具有挑战性的血液环境中快速密封破裂的血管.
科学领域:
- 生物材料科学 生物材料科学
- 血管外科 血管外科
- 医疗器械 医疗器械
背景情况:
- 在复杂的血液环境中,血管修复具有挑战性.
- 目前的方法,如不粘合密封剂和容器卷圈有局限性.
- 开发有效的注射材料,以在现场进行血管修复至关重要.
研究的目的:
- 引入可注射磁活性粘合剂水凝 (iMAH),用于血管修复.
- 为了证明iMAH在动态血液条件下的磁导和快速粘附能力.
- 在大型动物模型中评估iMAH在密封破裂动脉方面的疗效.
主要方法:
- 开发一种具有生物相容组件的可注射磁活性水凝 (iMAH).
- 使用磁性启动进行有针对性的传输和iMAH的精确部署.
- 在体外研究iMAH的粘附强度和流体移位能力.
- 在体内展示iMAH血管修复在大型动物比格尔犬模型中使用磁性血管机器人.
主要成果:
- iMAH显示了快速的交叉连接 (大约. 2秒) 和在动态血液流动下对血管表面的强粘附.
- 通过挤出界面流体,磁性启动促进了有针对性的传递和高效的粘附.
- 在比格尔犬模型中,使用磁导iMAH.成功地实现了分支的腰椎动脉栓塞.
- 该研究证实了iMAH在密封破裂血管和栓塞异常动脉方面的潜力.
结论:
- 可注射磁活性水凝 (iMAH) 在血管修复方面呈现出有前途的进步.
- 磁控输送iMAH提供了一个精确和有效的解决方案,挑战血管缺陷.
- 这项技术在治疗破裂或异常动脉方面具有重要的临床应用潜力.
相关概念视频
Adhesion
44.5K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Capillary action is a result of water’s adhesive tendencies. When a narrow...
44.5K
Mismatch Repair
43.7K
Overview
43.7K
Mismatch Repair
6.7K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
6.7K
Overview of DNA Repair
33.8K
In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Chemically...
33.8K
Base Excision Repair
26.4K
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
The first step of...
26.4K
Nucleotide Excision Repair
40.9K
Overview
40.9K


