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Updated: May 23, 2026
Antimicrobial Characterization of Advanced Materials for Bioengineering Applications
Published on: August 4, 2018
Antimicrobial peptide incorporated poly(2-hydroxyethyl methacrylate) hydrogels for the prevention of Staphylococcus
Garry Laverty1, Sean P Gorman, Brendan F Gilmore
1Biomaterials Research Group, School of Pharmacy, Queens University of Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom.
Abstract:
The effectiveness of the antimicrobial peptide maximin-4, the ultrashort peptide H-Orn-Orn-Trp-Trp-NH(2), and the lipopeptide C(12)-Orn-Orn-Trp-Trp-NH(2) in preventing adherence of pathogens to a candidate biomaterial were tested utilizing both matrix- and immersion-loaded poly(2-hydroxyethyl methacrylate) (poly(HEMA)) hydrogels. Antiadherent properties correlated to both the concentration released and the relative antimicrobial concentrations of each compound against Staphylococcus epidermidis ATCC 35984, at each time point. Immersion-loaded samples containing C(12)-Orn-Orn-Trp-Trp-NH(2) exhibited the lowest adherence profile for all peptides studied over 1, 4, and 24 h. The results outlined in this article show that antimicrobial peptides have the potential to serve as an important weapon against biomaterial associated infections.
Insights
Antimicrobial peptides, including maximin-4 and a lipopeptide, were tested for their ability to prevent pathogen adherence to poly(2-hydroxyethyl methacrylate) (poly(HEMA)) biomaterials. The lipopeptide C(12)-Orn-Orn-Trp-Trp-NH(2) showed the best performance in preventing bacterial adhesion.
Area of Science:
- Biomaterials Science
- Antimicrobial Peptides
- Infectious Diseases
Background:
- Biomaterial-associated infections are a significant clinical challenge.
- Antimicrobial peptides (AMPs) offer a promising alternative to conventional antibiotics.
- Developing effective strategies to prevent pathogen adherence to biomaterials is crucial.
Purpose of the Study:
- To evaluate the antiadherent properties of specific antimicrobial peptides and a lipopeptide against Staphylococcus epidermidis on poly(HEMA) hydrogels.
- To assess the impact of different loading methods (matrix vs. immersion) on peptide effectiveness.
- To determine the correlation between released peptide concentration and antiadherent efficacy.
Main Methods:
- Utilized poly(2-hydroxyethyl methacrylate) (poly(HEMA)) hydrogels loaded with peptides via matrix or immersion methods.
- Tested the adherence of Staphylococcus epidermidis ATCC 35984 over 1, 4, and 24 hours.
- Quantified peptide release and correlated it with antiadherent activity.
Main Results:
- The lipopeptide C(12)-Orn-Orn-Trp-Trp-NH(2) demonstrated the lowest pathogen adherence across all tested time points.
- Antiadherent efficacy was dependent on both the released peptide concentration and its antimicrobial activity.
- Immersion-loaded hydrogels generally showed superior antiadherent properties.
Conclusions:
- Antimicrobial peptides, particularly the lipopeptide C(12)-Orn-Orn-Trp-Trp-NH(2), show significant potential in preventing biomaterial-associated infections.
- Peptide loading method and release kinetics are critical factors for effective antiadherence.
- These findings support the use of antimicrobial peptides as a strategy against biomaterial infections.