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具有典型水胶体特性的高渗出性伤口管理用吸水胶原基泡沫敷料

Superabsorbent curdlan-based foam dressings with typical hydrocolloids properties for highly exuding wound management.

机构信息

Medical University of Lublin, Chair and Department of Biochemistry and Biotechnology, Chodzki 1 Street, 20-093 Lublin, Poland.

AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza 30, 30-059 Krakow, Poland.

出版信息

Mater Sci Eng C Mater Biol Appl. 2021 May;124:112068. doi: 10.1016/j.msec.2021.112068. Epub 2021 Mar 26.

Abstract

Effective management of chronic wounds with excessive exudate may be challenging for medical doctors. Over the years, there has been an increasing interest in the engineering of biomaterials, focusing on the development of polymer-based wound dressings to accelerate the healing of exuding wounds. The aim of this study was to use curdlan, which is known to support wound healing, as a base for the production of superabsorbent hybrid biomaterials (curdlan/agarose and curdlan/chitosan) with the intended use as wound dressings for highly exuding wound management. To evaluate the biomedical potential of the fabricated curdlan-based biomaterials, they were subjected to a comprehensive assessment of their microstructural, physicochemical, and biological properties. The obtained results showed that foam-like biomaterials with highly porous structure (66-77%) transform into soft gel after contact with the wound fluid, acting as typical hydrocolloid dressings. Novel biomaterials have the superabsorbent ability (1 g of the biomaterial absorbs approx. 15 ml of exudate) with horizontal wicking direction while keeping dry edges, and show water vapor transmission rate of approx. 1700-1800 g/m/day which is recommended for optimal wound healing. Moreover, they are stable in the presence of collagenases, but prone to biodegradation in lysozyme solution (simulated infected wound environment). Importantly, the developed biomaterials are non-toxic and their surface hinders fibroblast attachment, which is essential during dressing changes to avoid damage to newly formed tissues in the wound bed. All mentioned features make the developed biomaterials promising candidates to be used as the wound dressings for the management of chronic wounds with moderate to high exudate.

摘要

对于医生来说,有效管理有过多渗出液的慢性伤口可能具有挑战性。多年来,人们对生物材料的工程越来越感兴趣,专注于开发基于聚合物的伤口敷料,以加速渗出性伤口的愈合。本研究旨在以众所周知支持伤口愈合的结冷胶为基础,生产具有高吸收能力的混合生物材料(结冷胶/琼脂和结冷胶/壳聚糖),用作高度渗出性伤口管理的伤口敷料。为了评估所制备的结冷胶基生物材料的生物医学潜力,对它们的微观结构、物理化学和生物学特性进行了全面评估。研究结果表明,具有高度多孔结构(66-77%)的泡沫状生物材料在与伤口流体接触后转变为柔软的凝胶,作为典型的水胶体敷料。新型生物材料具有超强的吸水性(1 克生物材料可吸收约 15 毫升渗出液),且具有水平的导液方向,同时保持干燥边缘,水蒸气透过率约为 1700-1800g/m/天,这是最佳伤口愈合所推荐的。此外,它们在胶原酶存在下稳定,但在溶菌酶溶液(模拟感染性伤口环境)中易于生物降解。重要的是,所开发的生物材料无毒性,其表面阻碍成纤维细胞附着,这在更换敷料时避免对伤口床中新形成的组织造成损伤至关重要。所有提到的特征使所开发的生物材料成为具有中度至高度渗出液的慢性伤口管理的有前途的候选材料。

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