Sumate AmpawongPornanong AramwitMahidol UniversityChulalongkorn University2018-12-212019-03-142018-12-212019-03-142017-09-02Journal of Biomaterials Science, Polymer Edition. Vol.28, No.13 (2017), 1286-130215685624092050632-s2.0-85018703824https://repository.li.mahidol.ac.th/handle/20.500.14594/41782© 2017 Informa UK Limited, trading as Taylor & Francis Group. In this study, three kinds of antiseptics which were 0.05% chlorhexidine, 0.2% polyhexamethylene biguanide (PHMB), or 200 ppm silver nanoparticle was introduced to incorporate in the sericin-based scaffold to produce the antimicrobial dressing for the treatment of infected chronic wound. The effects of antiseptic incorporation on the stability, release of sericin, and short-term and long-term (6 months) antimicrobial activity of the sericin dressing against gram-negative and gram-positive bacteria were investigated. We showed that the incorporation of each antiseptic did not have significant effect on the internal morphology (pore size ~ 73–105 μm), elasticity (Young’s modulus ~ 200–500 kPa), and the sericin release behavior of the sericin-based dressing. The release of sericin from the dressing was prolonged over 120 h and thereafter. Comparing among three antiseptics, 0.05% chlorhexidine incorporated in the sericin dressing showed the highest immediate and long-term (6 months) antimicrobial effect (largest inhibition zone) against most bacteria either gram-positive or gram-negative bacteria. The in vivo safety test following ISO10993 standard (Biological evaluation of medical devices–Part 6: Tests for local effects after implantation) confirmed that the sericin dressing incorporating 0.05% chlorhexidine did not irritate to tissue, comparing with the commercial material used generally in clinic (Allevyn®, Smith & Nephew). We suggested the sericin dressing incorporating 0.05% chlorhexidine for the treatment of infected chronic wound. Chlorhexidine would reduce the risk of infection while the sericin may promote wound healing.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyChemical EngineeringEngineeringArticleSCOPUS10.1080/09205063.2017.1321339