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An Antimicrobial Fabric Using Nano-Herbal Encapsulation of Essential Oils
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Published on: April 7, 2023

Chitosan against cutaneous pathogens.

Jackson Champer1, Julie Patel, Nathalie Fernando

  • 1Division of Dermatology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA. jtchamper@yahoo.com.

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|July 9, 2013
PubMed
Summary
This summary is machine-generated.

Chitosan shows promise as an antimicrobial agent against antibiotic-resistant skin bacteria like Propionibacterium acnes and Staphylococcus aureus. It effectively targets these pathogens with minimal cytotoxicity, offering a potential new treatment option.

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Published on: February 27, 2021

Area of Science:

  • Microbiology
  • Biomaterials Science
  • Dermatology

Background:

  • Propionibacterium acnes (P. acnes) and Staphylococcus aureus (S. aureus) are common skin bacteria.
  • Increasing antibiotic resistance in these pathogens necessitates novel therapeutic strategies.

Purpose of the Study:

  • To investigate the antimicrobial potential of chitosan against P. acnes and S. aureus.
  • To evaluate the influence of chitosan molecular weight and pH on its antibacterial activity.
  • To assess the safety and efficacy of chitosan as a potential treatment for cutaneous infections.

Main Methods:

  • Antimicrobial activity testing of various chitosan molecular weights against P. acnes and S. aureus.
  • pH-dependent activity assays.
  • Electron and fluorescence microscopy to visualize chitosan-bacterial interactions.
  • Cytotoxicity assays using monocytes.
  • Evaluation of chitosan combined with benzoyl peroxide.

Main Results:

  • Higher molecular weight chitosan exhibited superior antimicrobial properties.
  • Chitosan's antibacterial activity was pH-dependent.
  • Microscopy showed chitosan aggregates binding to bacteria, causing membrane shrinkage.
  • Clinical isolates of P. acnes were susceptible to chitosan.
  • Chitosan demonstrated additive effects with benzoyl peroxide and lower cytotoxicity than benzoyl peroxide.

Conclusions:

  • Chitosan possesses significant antimicrobial activity against key cutaneous pathogens.
  • Its efficacy is influenced by molecular weight and pH.
  • Chitosan presents a promising, less cytotoxic alternative for treating antibiotic-resistant skin infections.
  • Combination therapy with existing agents like benzoyl peroxide may enhance efficacy.