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Author Spotlight: Studying Behavior of Acanthamoeba to Develop Targeted Strategies for Preventing Acanthamoeba Keratitis
Published on: September 20, 2024
Silver Nanoparticles as a Novel Potential Preventive Agent against Acanthamoeba Keratitis
Edyta B Hendiger1,2, Marcin Padzik2, Ines Sifaoui1
1Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias and Departamento de Obstetricia, Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna. Av. Astrofísico Francisco Sánchez S/N, 38203 Tenerife, Spain.
Silver nanoparticles (AgNPs) and platinum nanoparticles (PtNPs) show promise in combating Acanthamoeba keratitis (AK), a severe eye infection linked to contact lens use. These nanoparticles effectively kill Acanthamoeba and reduce its adhesion to contact lenses, offering a potential new preventive strategy.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Nanotechnology
Background:
- Acanthamoeba keratitis (AK) is a vision-threatening corneal infection with increasing incidence, primarily associated with contact lens wear.
- Current treatments for AK are limited, toxic, and insufficient, necessitating the development of novel preventive strategies.
- Acanthamoeba adhesion to contact lenses is a key factor in AK pathogenesis, making prevention of this adhesion crucial.
Purpose of the Study:
- To evaluate the anti-amoebic activity of silver nanoparticles (AgNPs) and platinum nanoparticles (PtNPs).
- To assess the influence of AgNPs and PtNPs on Acanthamoeba adhesion to contact lens surfaces.
- To explore the potential of nanoparticles as a preventive measure against Acanthamoeba keratitis.
Main Methods:
- Testing the efficacy of AgNPs and PtNPs against Acanthamoeba trophozoites in vitro.
- Evaluating the effect of nanoparticles on Acanthamoeba adhesion to four FDA-classified contact lens types.
- Analyzing the role of contact lens material properties, such as ionization and hydration, in Acanthamoeba adhesion.
Main Results:
- Both AgNPs and PtNPs demonstrated significant anti-amoebic activity against Acanthamoeba.
- Nanoparticles effectively reduced Acanthamoeba adhesion to the surface of tested contact lenses.
- AgNPs exhibited superior anti-amoebic activity and reduced adhesion across a broader range of contact lenses compared to PtNPs.
Conclusions:
- Silver nanoparticles show potential as a novel preventive agent against Acanthamoeba keratitis.
- Nanoparticle-based strategies could significantly decrease AK incidence, particularly in contact lens users.
- Contact lens material properties, including ionization and hydration, play a critical role in Acanthamoeba adhesion.
