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Bacterial capture efficiency in fluid bloodstream improved by bendable nanowires
Lizhi Liu1,2,3, Sheng Chen4, Zhenjie Xue1,2
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
Nature Communications
|February 8, 2018
Summary
Researchers developed a novel 3D carbon foam dialyzer with bendable nanowires. This device achieves 97% bacterial capture efficiency from blood, improving sepsis treatment potential.
Area of Science:
- Biomedical Engineering
- Materials Science
- Infectious Diseases
Background:
- Bacterial infections like sepsis can cause organ damage.
- Current extracorporeal bacteria removal methods face efficiency challenges at high blood flow rates.
Purpose of the Study:
- To develop an advanced dialyzer for efficient bacteria isolation from unprocessed blood.
- To enhance bacterial capture efficiency in extracorporeal blood treatment.
Main Methods:
- Fabrication of a 3D carbon foam dialyzer grafted with polycrystalline nanowires.
- Utilizing nanowire nanoclaws with decreasing Young's moduli for enhanced ligand-receptor binding.
- Testing capture efficiency at a bloodstream velocity of 10 cm/s.
Main Results:
- Achieved 97% bacterial capture efficiency with bendable polycrystalline nanowires/carbon foam.
- Demonstrated significantly higher efficiency compared to plain carbon foam (~10%) and unbendable nanowires (~40%).
- The nanoclaw design effectively captures bacteria in high-velocity blood flow.
Conclusions:
- The developed dialyzer shows high potential for effective bacterial removal in sepsis management.
- Bendable polycrystalline nanowires offer a significant improvement over previous designs for extracorporeal blood purification.
- This technology could overcome limitations of current methods for treating bloodstream infections.
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