Cytotoxicity evaluation of gelatin sponges prepared with different cross-linking agents
| Autor: | S Ismet Deliloglu Gurhan, Nesrin Hasirci, Kemal Serbetci, Kezban Ulubayram, Ebru Aksu |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
food.ingredient
Materials science Biocompatibility Cell Survival Biomedical Engineering Biophysics Biocompatible Materials Bioengineering Mechanics Gelatin Cell Line Biomaterials chemistry.chemical_compound food Materials Testing Ultimate tensile strength Humans Organic chemistry Carbodiimide chemistry.chemical_classification biology Polymer Fibroblasts biology.organism_classification Gelatin Sponge Absorbable Sponge Cross-Linking Reagents chemistry Chemical engineering Drug delivery Glutaraldehyde |
| Zdroj: | Journal of Biomaterials Science, Polymer Edition. 13:1203-1219 |
| ISSN: | 1568-5624 0920-5063 |
| DOI: | 10.1163/156856202320892966 |
| Popis: | Gelatin is a natural polymer used in pharmaceutical and medical applications, especially in the production of biocompatible and biodegradable wound dressings and drug delivery systems. Gelatin granules hydrate, swell and solubilize in water, and rapidly degrade in vivo. The durability of these materials could, however, be prolonged by cross-linking by aldehydes, carbodiimides, and aldose sugars, but the biocompatibility of collagenous biomaterials is profoundly influenced by the nature and extent of cross-linking. In this study, gelatin sponges were prepared by using various cross-linkers such as glutaraldehyde (GA), 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (EDAC), and D-fructose. The effects of the type and the amount of cross-linker on thermal and mechanical properties, stability, and cytotoxicity were investigated. The mechanical analysis data showed that an increase in the amount of GA in the sponge structures caused a slight increase in the modulus of elasticity but had almost no effect on the tensile strength. Increase in the EDAC concentration produced a maximum in the modulus of elasticity and tensile strength values. The stability of the sponges and the time required for complete degradation in aqueous media increased in parallel with the cross-linker content. In vitro studies carried out with fibroblast cells demonstrated a higher cell viability for the samples cross-linked with low concentrations of GA than for those cross-linked with EDAC. |
| Databáze: | OpenAIRE |
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