In Vitro and In Vivo Evaluation of Novel Ciprofloxacin-Releasing Silicone Hydrogel Contact Lenses
dc.contributor.author | Hui, Alex | |
dc.contributor.author | Willcox, Mark D. P. | |
dc.contributor.author | Jones, Lyndon W. | |
dc.date.accessioned | 2017-03-07T19:47:57Z | |
dc.date.available | 2017-03-07T19:47:57Z | |
dc.date.issued | 2014-08-08 | |
dc.description | Hui, A., Willcox, M., & Jones, L. (2014). In Vitro and In Vivo Evaluation of Novel Ciprofloxacin-Releasing Silicone Hydrogel Contact Lenses. Investigative Opthalmology & Visual Science, 55(8), 4896. https://doi.org/10.1167/iovs.14-14855 | en |
dc.description.abstract | Purpose.: The purpose of this study was to evaluate ciprofloxacin-releasing silicone hydrogel contact lens materials in vitro and in vivo for the treatment of microbial keratitis. Methods.: Model silicone hydrogel contact lens materials were manufactured using a molecular imprinting technique to modify ciprofloxacin release kinetics. Various contact lens properties, including light transmission and surface wettability, were determined, and the in vitro ciprofloxacin release kinetics elucidated using fluorescence spectrophotometry. The materials then were evaluated for their ability to inhibit Pseudomonas aeruginosa growth in vitro and in an in vivo rabbit model of microbial keratitis. Results.: Synthesized lenses had similar material properties to commercial contact lens materials. There was a decrease in light transmission in the shorter wavelengths due to incorporation of the antibiotic, but over 80% light transmission between 400 and 700 nm. Modified materials released for more than 8 hours, significantly longer than unmodified controls (P < 0.05). In vivo, there was no statistically significant difference between the number of colony-forming units (CFU) recovered from corneas treated with eye drops and those treated with one of two modified contact lenses (P > 0.05), which is significantly less than corneas treated with unmodified control lenses or those that received no treatment at all (P < 0.05). Conclusions.: These novel contact lenses designed for the extended release of ciprofloxacin may be beneficial to supplement or augment future treatments of sight-threatening microbial keratitis. | en |
dc.description.sponsorship | Supported by the Natural Science and Engineering Research Council of Canada (NSERC) | |
dc.description.sponsorship | 20/20 Network for the Development of Advanced Ophthalmic Materials | |
dc.description.sponsorship | and by an NSERC Alexander Graham Bell Doctoral Scholarship | |
dc.description.sponsorship | the Ezell Fellowship from the American Optometric Foundation | |
dc.description.sponsorship | and the Endeavour Research Grant from the Australian Government (AH). | |
dc.identifier.uri | http://hdl.handle.net/10012/11459 | |
dc.identifier.uri | http://dx.doi.org/10.1167/iovs.14-14855 | |
dc.language.iso | en | en |
dc.publisher | Association for Research in Vision and Ophthalmology | en |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Contact lens | en |
dc.subject | Microbial keratitis | en |
dc.subject | Drug delivery | en |
dc.subject | Molecular imprinting | en |
dc.subject | Ciprofloxacin | en |
dc.title | In Vitro and In Vivo Evaluation of Novel Ciprofloxacin-Releasing Silicone Hydrogel Contact Lenses | en |
dc.type | Article | en |
dcterms.bibliographicCitation | Hui, A., Willcox, M., & Jones, L. (2014). In Vitro and In Vivo Evaluation of Novel Ciprofloxacin-Releasing Silicone Hydrogel Contact Lenses. Investigative Opthalmology & Visual Science, 55(8), 4896. https://doi.org/10.1167/iovs.14-14855 | en |
uws.contributor.affiliation1 | Faculty of Science | en |
uws.contributor.affiliation2 | School of Optometry and Vision Science | en |
uws.peerReviewStatus | Reviewed | en |
uws.scholarLevel | Faculty | en |
uws.typeOfResource | Text | en |