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In vitro degradability and bioactivity of oxidized bacterial cellulose-hydroxyapatite composites
Carbohydrate Polymers ( IF 11.2 ) Pub Date : 2020-03-17 , DOI: 10.1016/j.carbpol.2020.116174
Erika Patricia Chagas Gomes Luz , Paulo Hiago Silva Chaves , Lidia de Araújo Pinto Vieira , Sádwa Fernandes Ribeiro , Maria de Fátima Borges , Fabia Karine Andrade , Celli Rodrigues Muniz , Antonia Infantes-Molina , Enrique Rodríguez-Castellón , Morsyleide de Freitas Rosa , Rodrigo Silveira Vieira

Hydroxyapatite-associated bacterial cellulose (BC/HA) is a promising composite for biomedical applications. However, this hybrid composite has some limitations due to its low in vivo degradability. The objective of this work was to oxidize BC and BC/HA composites for different time periods to produce 2,3 dialdehyde cellulose (DAC). The BC and oxidized BC (OxBC) membranes were mineralized to obtain the hybrid materials (BC/HA and OxBC/HA) and their physico-chemical, degradability, and bioactivity properties were studied. The results showed that OxBC/HA was more bioactive and degradable than BC/HA, which isa function of the degree of BC oxidation. High glucose levels in the BC degradation were observed as a function of oxidation degree, and other products, such as butyric acid and acetic acid resulted from DAC degradation. Therefore, this chemical modification reaction favors BC degradation, making it a good biodegradable and bioactive material with a potential for bone regeneration applications.



中文翻译:

氧化细菌纤维素-羟基磷灰石复合材料的体外降解性和生物活性

羟基磷灰石相关细菌纤维素(BC / HA)是一种有前途的生物医学应用复合材料。然而,这种杂合复合材料由于其体内活性低而具有一些局限性可降解性。这项工作的目的是在不同的时间段氧化BC和BC / HA复合材料,以生产2,3二醛纤维素(DAC)。将BC和氧化的BC(OxBC)膜矿化以获得杂化材料(BC / HA和OxBC / HA),并研究其物理化学,可降解性和生物活性。结果表明,OxBC / HA比BC / HA具有更高的生物活性和可降解性,这是BC氧化程度的函数。观察到BC降解中的高葡萄糖水平是氧化程度的函数,其他产物,例如DAC降解产生的丁酸和乙酸。因此,这种化学修饰反应有利于BC降解,使其成为具有良好生物可降解性和生物活性的材料,具有潜在的骨再生应用潜力。

更新日期:2020-03-19
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