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首页> 外文期刊>European Polymer Journal >Preparation and characterization of new hydrogels based on hyaluronic acid and alpha,beta-polyaspartylhydrazide
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Preparation and characterization of new hydrogels based on hyaluronic acid and alpha,beta-polyaspartylhydrazide

机译:基于透明质酸和α,β-聚天冬氨酰肼的新型水凝胶的制备和表征

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Hyaluronic acid (HA) has been crosslinked with alpha,beta-polyaspartylhydrazide (PAHy). The crosslinking reaction has been performed in acidic medium in the presence of various amounts of N-ethyl-N'-(3-dimethylaminopropyl)-carbodiimide hydrochloride (EDC). All obtained samples have been characterized by FT-IR analysis and swelling measurements in double distilled water that have confirmed the occurrence of a chemical linkage between two polymers and the affinity towards aqueous medium of HA-PAHy networks, respectively. In vitro degradation assays have been performed in simulated physiological conditions as well as in the presence of hyaluronidase. Experimental data evidenced that HA-PAHy samples undergo a poor chemical and a reduced enzymatic degradation unlike native HA. (C) 2007 Elsevier Ltd. All rights reserved.
机译:透明质酸(HA)已与α,β-聚天冬氨酰肼(PAHy)交联。交联反应是在酸性介质中,在各种量的N-乙基-N′-(3-二甲基氨基丙基)-碳二亚胺盐酸盐(EDC)的存在下进行的。所有获得的样品均已通过FT-IR分析和在双蒸馏水中的溶胀测量进行了表征,分别证实了两种聚合物之间的化学键以及对HA-PAHy网络对水性介质的亲和力。已经在模拟的生理条件下以及在透明质酸酶存在下进行了体外降解测定。实验数据证明,与天然HA相比,HA-PAHy样品化学性质较差,酶促降解降低。 (C)2007 Elsevier Ltd.保留所有权利。

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