Insights into Functional Erythromycin/Antioxidant Containing Chitosan Hydrogels as Potential Bio-active Restorative Materials: Structure, Function and Antimicrobial Activity
| Autor: | Grobler S, Massey W, Basson N, Perchyonok Vt, Zhang S, Oberholzer T |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Antioxidant
medicine.drug_class Applied Mathematics General Mathematics medicine.medical_treatment Antibiotics Erythromycin Pharmacology Biology engineering.material Antimicrobial Microbiology Chitosan chemistry.chemical_compound chemistry Drug delivery Self-healing hydrogels medicine engineering Biopolymer medicine.drug |
| Zdroj: | Advanced Techniques in Biology & Medicine. 2 |
| ISSN: | 2379-1764 |
| DOI: | 10.4172/2379-1764.1000116 |
| Popis: | Substantial data are available in the literature on the role of Reactive Oxygen Opecies (ROS) and antioxidants in disorders such as the inflammatory and in chronic immune mediated conditions such as rheumatoid arthritis. However, remarkably little information is available on the periodontal diseases, which show many of the pathological features of other chronic inflammatory diseases. The periodontal tissues also provide an ideal medium within which to study mechanisms of ROS mediated tissue damage and of antioxidant defense in response to bacterial colonization, through the non-invasive collection of GCF. Bio-adhesive polymers appear to be particularly attractive for the development of alternative etches free dentin bonding system with an added advantage of additional therapeutic delivery systems to improve intradental administration of therapeutic and prophylactic agents if necessary. Chitosan, which is a biologically safe biopolymer, has been proposed as a bio-adhesive polymer and are of continuous interest to us due to their unique properties and flexibility in broad range of oral applications reported by others and us recently. The objectives of this study is to evaluate the novel chitosan based functional drug delivery systems which can be successfully incorporated into “dual action bioactive restorative materials” containing common antibiotic such as erythromycin, krill oil, aloe and aspirin as commonly used antioxidant species. Methods: The novel hydrogels will be investigated with respect to the antioxidant capacity and drug release capacity of the tetracycline as well as erythromycin from the designer drug delivery system, the use of SEM imaging for the characterization of the surfaces and reactive features of novel materials with antimicrobial potential as well asuse of the newly designed materials as an effective adhesive restorative materials. Results: A continuous release of erythromycin, while maintaining antibiotic effects against the tested bacteria,for at least 24 hours was shown from designer chitosan-antioxidant hydrogels. The increase antioxidant capacityof the designer material, significant antimicrobial capacity as well as adhesive dentine bond strength make thechitosan-containing restorative materials suitable and potentially advantageous materials for restorative andperiodontal applications in-vitro. The addition of antioxidants to the functionalized restorative material acts as aalternative free radical defense mechanism and therefor increases the shear bond strength teeth by managing theexcess of free radicals produced during common restorative procedure. Future investigations are necessary tovalidate this hypothesis. |
| Databáze: | OpenAIRE |
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