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Related Concept Videos

Surface Membrane Barriers01:18

Surface Membrane Barriers

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The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
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Antimicrobial Proteins01:23

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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
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Author Spotlight: Metallic Nanocomposites to Eliminate Antibiotic-Resistant Bacteria
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Antimicrobial second skin using copper nanomesh.

Jae Joon Kim1, Siyoung Ha2, Lina Kim2

  • 1Department of Electrical Engineering and Information Systems, The University of Tokyo, Bunkyo-Ku, Tokyo 113-8656, Japan.

Proceedings of the National Academy of Sciences of the United States of America
|June 9, 2022
PubMed
Summary
This summary is machine-generated.

A novel copper nanomesh platform effectively prevents pathogen cross-infection on skin. This antimicrobial material maintains skin

Keywords:
antimicrobial performancebreathabilitycopper coatingcross-infection preventionnanofiber mesh

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Area of Science:

  • Bioengineering
  • Materials Science
  • Infectious Disease Prevention

Background:

  • Achieving functional skin support while maintaining natural skin properties is a key bioengineering goal.
  • Current antimicrobial methods for skin lack long-term wearability and can compromise natural skin functions.
  • Preventing cross-infection without altering skin conditions remains a significant challenge.

Purpose of the Study:

  • To develop and evaluate a novel antimicrobial skin protection platform using copper nanomesh.
  • To assess the efficacy of copper nanomesh in preventing cross-infection by bacteria and viruses.
  • To determine the impact of copper nanomesh on skin's natural functions, including temperature and humidity.

Main Methods:

  • Fabrication of a thin and porous copper nanomesh.
  • Testing antimicrobial activity against *Escherichia coli* and influenza virus A.
  • Evaluating the effect of nanomesh on skin temperature change rate and humidity.
  • Conducting on-hand experiments to demonstrate cross-infection prevention and thermal transfer.

Main Results:

  • Copper nanomesh achieved 99.99% inactivation of *Escherichia coli* within 1 minute and influenza virus A within 10 minutes.
  • The nanomesh demonstrated conformal coating on fingertips with minimal interference with skin temperature and humidity.
  • Experiments confirmed efficient cross-infection prevention and thermal transfer capabilities of the copper nanomesh.

Conclusions:

  • Copper nanomesh serves as an effective antimicrobial skin protection platform.
  • This technology prevents cross-infection while preserving essential skin functions like temperature and humidity regulation.
  • The developed copper nanomesh offers a promising solution for long-term, comfortable antimicrobial skin protection.