title: Development and characterization of a hydrogel containing silver sulfadiazine for antimicrobial topical applications.
abstract: Development and optimization of a hydrogel with impregnated silver sulfadiazine was pursued, for antimicrobial topical applications. The selected hydrogel exhibited a homogeneous appearance, with whitish colloration and devoid of any fractures or cracks. The content in impregnated silver sulfadiazine was within established limits (1%, w/w) with a standard deviation of up to 1.28%. The hydrogel presented a good characteristic in relation to release of the active antimicrobial principle, verified through swelling tests and antimicrobial activity. The swelling tests indicated a higher increase in weight during the first 6 h of contact with a moist environment, with a maximum value of 266.00 ± 0.81, and with maintenance of the original shape of the hydrogel. The impregnated silver sulfadiazine presented antimicrobial activity, as expected, indicating a prolonged release of the drug. The infrared spectra of the hydrogel with impregnated silver sulfadiazine indicated that the drug did not engage in any bonds with the polymeric matrix, which otherwise could have reduced its antimicrobial activity. The mechanical resistance tests produced good results, indicating that the hydrogels may be utilized in different locations of the human body with skin lesions.
authors.affiliation: LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)2 - Intelligent Biosensing and Biomolecule Stabilization Research Group, University of Sorocaba, Sorocaba, São Paulo, Brazil.
authors.forename: Karin S P
authors.initials: KS
authors.lastname: Jodar
authors.affiliation: LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)2 - Intelligent Biosensing and Biomolecule Stabilization Research Group, University of Sorocaba, Sorocaba, São Paulo, Brazil.|CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal.|Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil.
authors.forename: Victor M
authors.initials: VM
authors.lastname: Balcão
authors.affiliation: LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)2 - Intelligent Biosensing and Biomolecule Stabilization Research Group, University of Sorocaba, Sorocaba, São Paulo, Brazil.
authors.forename: Marco V
authors.initials: MV
authors.lastname: Chaud
authors.affiliation: Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil.
authors.forename: Matthieu
authors.initials: M
authors.lastname: Tubino
authors.affiliation: LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)2 - Intelligent Biosensing and Biomolecule Stabilization Research Group, University of Sorocaba, Sorocaba, São Paulo, Brazil.
authors.forename: Valquíria M H
authors.initials: VM
authors.lastname: Yoshida
authors.affiliation: LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)2 - Intelligent Biosensing and Biomolecule Stabilization Research Group, University of Sorocaba, Sorocaba, São Paulo, Brazil.
authors.forename: José M
authors.initials: JM
authors.lastname: Oliveira
authors.affiliation: LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)2 - Intelligent Biosensing and Biomolecule Stabilization Research Group, University of Sorocaba, Sorocaba, São Paulo, Brazil.|Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil.
authors.forename: Marta M D C
authors.initials: MM
authors.lastname: Vila
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry* / Q000494:pharmacology; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology; D012837:Silver Sulfadiazine / Q000737:chemistry* / Q000494:pharmacology; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D012834:Silver; D012837:Silver Sulfadiazine
keywords: PVA; antimicrobial topical applications; hydrogels; physical characterization; polymeric drug delivery systems; silver sulfadiazine; skin; transdermal drug delivery