title: Polypeptide nanocoatings for preventing dental and orthopaedic device-associated infection: pH-induced antibiotic capture, release, and antibiotic efficacy.
abstract: Implant-associated infection is one of the most common and problematic complications for dental and orthopaedic patients. Modification of currently used implant surfaces aimed at bestowing them with antibacterial properties is a promising approach in the development of new biomaterials. In this study, a novel nanotechnology, that is, electrostatic self-assembly, was developed to construct biomimetic polypeptide nanocoatings on commonly used metal implants. A model antibacterial drug, cefazolin, was captured in the polypeptide nanocoating and its release was studied. We have shown that the capture and release of cefazolin was pH-induced and could be controlled, and the developed antibiotic-incorporated polypeptide multilayer nanocoatings could prevent Staphylococcus aureus colonization thus showing great potential for preventing implant-associated infection.
authors.affiliation: Biomaterials, Bioengineering & Nanotechnology Laboratory, Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia, USA.
authors.forename: Bingbing
authors.initials: B
authors.lastname: Jiang
authors.forename: Bingyun
authors.initials: B
authors.lastname: Li
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology*; D003764:Dental Materials; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D011099:Polyglutamic Acid / Q000737:chemistry*; D011107:Polylysine / Q000737:chemistry*; D019736:Prostheses and Implants; D012997:Solvents; D017550:Spectroscopy, Fourier Transform Infrared; D013203:Staphylococcal Infections / Q000517:prevention & control; D013211:Staphylococcus aureus / Q000187:drug effects*
chemical_list: D000900:Anti-Bacterial Agents; D003764:Dental Materials; D012997:Solvents; D011107:Polylysine; D011099:Polyglutamic Acid