title: Characterization of silver nanoparticle-infused tissue adhesive for ophthalmic use.
abstract: In this work, we demonstrate the successful enhancement of breaking strength, adhesive strength, and antibacterial efficacy of ophthalmic tissue adhesive (2-octyl cyanoacrylate) by doping with silver nanoparticles, and investigate the effects of nanoparticle size and concentration. Recent work has shown that silver nanoparticles are a viable antibacterial additive to many compounds, but their efficacy in tissue adhesives was heretofore untested. Our results indicate that doping the adhesive with silver nanoparticles reduced bacterial growth by an order of magnitude or more; nanoparticle size and concentration had minimal influence in the range tested. Tensile breaking strength of polymerized adhesive samples and adhesive strength between a T-shaped support and excised porcine sclera were measured using a universal testing machine according to ASTM (formerly American Society for Testing and Materials) standard techniques. Both tests showed significant improvement with the addition of silver nanoparticles. The enhanced mechanical strength and antibacterial efficacy of the doped adhesive supports the use of tissue adhesives as a viable supplement or alternative to sutures.
authors.affiliation: Biomedical, Chemical and Materials Engineering, San José State University, one Washington Square, San Jose 95192-0082, CA, United States.
authors.forename: William
authors.initials: W
authors.lastname: Yee
authors.affiliation: Biomedical, Chemical and Materials Engineering, San José State University, one Washington Square, San Jose 95192-0082, CA, United States.
authors.forename: Guna
authors.initials: G
authors.lastname: Selvaduray
authors.affiliation: Biomedical, Chemical and Materials Engineering, San José State University, one Washington Square, San Jose 95192-0082, CA, United States. Electronic address: benjamin.hawkins@sjsu.edu.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Hawkins
mesh_terms: D000268:Adhesiveness; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D003487:Cyanoacrylates / Q000737:chemistry* / Q000494:pharmacology; D005123:Eye / Q000187:drug effects; D008422:Materials Testing; D055595:Mechanical Phenomena; D053768:Metal Nanoparticles / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013718:Tensile Strength; D014014:Tissue Adhesives / Q000737:chemistry* / Q000494:pharmacology; D016474:Weight-Bearing
chemical_list: D000900:Anti-Bacterial Agents; D003487:Cyanoacrylates; D014014:Tissue Adhesives; D012834:Silver; C100832:octyl 2-cyanoacrylate
keywords: Antibacterial; Material characterization; Nanoparticles; Ophthalmic application; Tissue adhesive