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Modification and crosslinking of gelatin-based biomaterials as tissue adhesives.

07:00 EST 16th November 2018 | BioPortfolio

Summary of "Modification and crosslinking of gelatin-based biomaterials as tissue adhesives."

Tissue adhesives have been developed to overcome the difficulties of conventional wound closure techniques (e.g. sutures and staples), such as the potential for collateral damage and difficulty of stopping body fluid and gas. At the same time, it provides advantages such as simpler implementation, less painful, and does not require removal. However, representative adhesives such as cyanoacrylates and fibrin glues are plagued by cytotoxicity and low adhesion. In this study, we choose instead gelatin as the backbone of adhesive, due to its biocompatibility, biodegradability, and low cost. Firstly, catechol-modified gelatin and phenol-modified gelatin were synthesized via an EDC/NHS chemistry. Then, gelatin-based adhesives were prepared via ruthenium-based photochemistry, including photo-crosslinked gelatin (PG), phenol-modified gelatin (PPG), and catechol-modified gelatin (PCG). We also compared the photo-crosslinked adhesives to the recently reported ion-crosslinked catechol-modified gelatin. Our results indicate that gelatin-based adhesives demonstrate lower swelling index, great degradability, and low cytotoxicity. This shows that gelatin-based adhesives demonstrate great potential for wound closure and healing.

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Journal Details

This article was published in the following journal.

Name: Colloids and surfaces. B, Biointerfaces
ISSN: 1873-4367
Pages: 316-323

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Medical and Biotech [MESH] Definitions

A plant genus of the family RUBIACEAE. Members contain genepin, from which geniposide is obtained for use as a crosslinking agent in ADHESIVES, and 3-caffeoyl-4-sinapoylquinic acid.

Substances used to cause adherence of tissue to tissue or tissue to non-tissue surfaces, as for prostheses.

Synthetic or natural materials for the replacement of bones or bone tissue. They include hard tissue replacement polymers, natural coral, hydroxyapatite, beta-tricalcium phosphate, and various other biomaterials. The bone substitutes as inert materials can be incorporated into surrounding tissue or gradually replaced by original tissue.

Substances that cause the adherence of two surfaces. They include glues (properly collagen-derived adhesives), mucilages, sticky pastes, gums, resins, or latex.

Devices used to hold tissue structures together for repair, reconstruction or to close wounds. They may consist of adsorbable or non-adsorbable, natural or synthetic materials. They include tissue adhesives, skin tape, sutures, buttons, staples, clips, screws, etc., each designed to conform to various tissue geometries.

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