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通过与聚乙烯醇共混和化学交联改性的壳聚糖膜的性能及生物相容性。

Properties and biocompatibility of chitosan films modified by blending with PVA and chemically crosslinked.

作者信息

de Souza Costa-Júnior Ezequiel, Pereira Marivalda M, Mansur Herman S

机构信息

Department of Metallurgical Engineering and Materials, Federal University of Minas Gerais, Rua Espírito Santo, 35/206-Centro, 30.160-030 Belo Horizonte, MG, Brazil.

出版信息

J Mater Sci Mater Med. 2009 Feb;20(2):553-61. doi: 10.1007/s10856-008-3627-7. Epub 2008 Nov 6.

Abstract

In the present work we report the synthesis, characterization, and preliminary biocompatibility of polymer blends based on Chitosan and poly(vinyl alcohol) (PVA) with low degree of hydrolysis and chemically crosslinked by glutaraldehyde for potential application on skin tissue repairing. The microstructure and morphology of the blended hydrogels were characterized through Fourier Transform Infrared spectroscopy (FTIR) and Scanning electron microscopy (SEM/EDX) analysis. Hydrogels were investigated by swelling as preliminary in vitro test using simulated body fluid. In addition, biocompatibility, cytotoxicity, and cell viability were assessed via MTT assay with VERO cell culture and cell spreading-adhesion analysis. It was found that by increasing the chitosan to PVA ratio, simulated body fluid uptake of the material was significantly altered. All the tested hydrogels have clearly presented adequate cell viability, non-toxicity, and suitable properties which can be tailored for prospective use in skin tissue engineering.

摘要

在本研究中,我们报告了基于壳聚糖和低水解度聚乙烯醇(PVA)并通过戊二醛化学交联的聚合物共混物的合成、表征及初步生物相容性,其具有在皮肤组织修复方面的潜在应用价值。通过傅里叶变换红外光谱(FTIR)和扫描电子显微镜(SEM/EDX)分析对共混水凝胶的微观结构和形态进行了表征。使用模拟体液通过溶胀作为初步体外试验对水凝胶进行了研究。此外,通过MTT法对VERO细胞培养进行生物相容性、细胞毒性和细胞活力评估以及细胞铺展-黏附分析。结果发现,通过增加壳聚糖与PVA的比例,材料对模拟体液的吸收显著改变。所有测试的水凝胶均明显表现出足够的细胞活力、无毒性以及可针对皮肤组织工程的预期用途进行定制的合适特性。

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