Photocurable and Temperature-Sensitive Bioadhesive Hydrogels for Sutureless Sealing of Full-Thickness Corneal Wounds

Penetrating corneal wounds can cause severe vision impairment and require prompt intervention to restore globe integrity and minimize the risk of infection. Tissue adhesives have emerged as a promising alternative to suturing for mitigating postoperative complications. However, conventional water-so...

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Published inSmall methods Vol. 8; no. 3; p. e2300996
Main Authors Wang, Qian, Zhao, Xuan, Yu, Fei, Fang, Po-Han, Liu, Liu, Du, Xinyue, Li, Weihua, He, Dalian, Bai, Ying, Li, Saiqun, Yuan, Jin
Format Journal Article
LanguageEnglish
Published Germany 01.03.2024
Subjects
Adhesives - pharmacology
Animals
Cornea - surgery
Corneal Injuries - surgery
Corneal Perforation
Hydrogels - therapeutic use
Rabbits
Temperature
sutureless sealing
cornea repair
temperature-sensitivity
photocuring
bioadhesive hydrogels
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Summary:Penetrating corneal wounds can cause severe vision impairment and require prompt intervention to restore globe integrity and minimize the risk of infection. Tissue adhesives have emerged as a promising alternative to suturing for mitigating postoperative complications. However, conventional water-soluble adhesives suffer formidable challenges in sealing penetrating corneal wounds due to dilution or loss in a moist environment. Inspired by the robust adhesion of mussels in aquatic conditions, an injectable photocurable bioadhesive hydrogel (referred to as F20HD5) composed of polyether F127 diacrylate and dopamine-modified hyaluronic acid methacrylate is developed for sutureless closure of corneal full-thickness wounds. F20HD5 exhibits high transparency, wound-sealing ability, proper viscosity, biodegradability, and excellent biocompatibility. It allows in situ cross-linking via visible light, thereby providing sufficient mechanical strength and adhesiveness. In vivo, the adhesive hydrogel effectively closed penetrating linear corneal incisions and corneal injuries with minimal tissue loss in rabbits. During the 56-day follow-up, the hydrogel facilitates the repair of the injured corneas, resulting in more symmetrical curvatures and less scarring in distinction to the untreated control. Thus, bioinspired hydrogel holds promise as an effective adhesive for sealing full-thickness corneal wounds.
ISSN:2366-9608
DOI:10.1002/smtd.202300996