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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Development and Characterization of a Hydrogel Containing Nitrofurazone for Antimicrobial Topical Applications

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Author(s):
Vila, Marta M. D. C. [1] ; Coelho, Sebastiao L. [1] ; Chaud, Marco V. [1] ; Tubino, Matthieu [2] ; Oliveira, Jr., Jose M. [3] ; Balcao, Victor M. [1, 4]
Total Authors: 6
Affiliation:
[1] Univ Sorocaba, LaBNUS Lab Biomat & Nanotechnol Ibs2, Intelligent Biosensing & Biomol Stabilizat Res Gr, BR-18023000 Sorocaba, SP - Brazil
[2] Univ Estadual Campinas, Inst Chem, BR-13083970 Campinas, SP - Brazil
[3] Univ Sorocaba, LaFINAU Lab Appl Nucl Phys, BR-18023000 Sorocaba, SP - Brazil
[4] Univ Minho, CEB Ctr Biol Engn, Braga - Portugal
Total Affiliations: 4
Document type: Journal article
Source: CURRENT PHARMACEUTICAL BIOTECHNOLOGY; v. 15, n. 2, p. 182-190, 2014.
Web of Science Citations: 5
Abstract

The goal of the research work entertained herein was the development and characterization of a poly-(vinyl alcohol) (PVA) hydrogel cross-linked with glutaraldehyde and impregnated with 0.2% (w/w) nitrofurazone (NTZ), for topical applications. To verify the active principle release capability, one has determined (i) swelling profile, (ii) in vitro release of NTZ via UV-VIS spectrophotometry, and (iii) antimicrobial activity via exposure to the hydrogel of ATCC strains of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. The optimized hydrogel was further characterized via scanning electron microscopy (SEM), infrared spectroscopy with Fourier transform, moisture content determinations and thermal analyses via thermal gravimetry (TGA). Swelling tests revealed a mass increase from 100 +/- 5% up to 350 perpendicular to 11%. Incorporated NTZ displayed bactericidal activity, as expected, being released in a linearly controlled fashion above 6 mu g/mL during experiment timeframes of 14 h. SEM analyses allowed verification of a homogeneous surface morphology, while infrared spectra showed that NTZ did not bind strongly to the cross-linked polymer. Furthermore, results from thermal analyses suggested a loss of thermal stability arising from incorporation of NTZ in the hydrogel. The optimized hydrogel exhibited characteristics with high potential for (antimicrobial) treatment of skin lesions. (AU)