Journal
MACROMOLECULAR BIOSCIENCE
Volume 13, Issue 4, Pages 464-469Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.201200384
Keywords
age-related wet macular degeneration; compatibility; hydrogels; retinal cells; sustained release
Funding
- ocular tissue engineering and regenerative ophthalmology (OTERO) Postdoctoral Fellowship
- Louis J. Fox Center for Vision Restoration
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Reverse thermal gels have numerous biomedical implications, as they undergo physical gelation upon temperature increases and can incorporate biomolecules to promote tissue repair. Such a material is developed for the sustained release of bevacizumab (Avastin), a drug used to treat age-related macular degeneration. The polymer, poly(ethylene glycol)-poly(serinol hexamethylene urethane) (ESHU), forms a physical gel when heated to 37 degrees C and shows good cytocompatibility with ocular cells. ESHU is capable of sustaining bevacizumab release over 17weeks in vitro, and the release kinetics can be altered by changing the drug dose and the ESHU concentration. These results suggest that ESHU is biologically safe, and suitable for ocular drug delivery.
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