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Anti-inflammatory function of an in situ cross-linkable conjugate hydrogel of hyaluronic acid and dexamethasone

机译:透明质酸和地塞米松原位可交联共轭水凝胶的抗炎功能

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摘要

Postoperative peritoneal adhesions cause pelvic pain, infertility, and potentially lethal bowel obstruction. We have designed and synthesized an injectable hydrogel composed of cross-linkable modified hyaluronic acids (HAs) conjugated to dexamethasone (HAX-DEX), and investigated its anti-inflammatory function. HAX-DEX formed a hydrogel in < 1 min by cross-linking reactions between aldehyde groups and hydrazide groups. The hydrogel degraded in media over 5 days, releasing dexamethasone slowly over that time, reducing TNF-alpha and IL-6 production from lipopolysaccharide-stimulated primary mouse macrophages in vitro. HAX-DEX was biocompatible on subcutaneous injection, and caused less inflammation than unmodified cross-linked HA. (c) 2006 Elsevier Ltd. All rights reserved.
机译:术后腹膜粘连会引起骨盆疼痛,不孕症,并可能导致致命的肠梗阻。我们设计并合成了由可交联的修饰的透明质酸(HAs)与地塞米松(HAX-DEX)偶联而成的可注射水凝胶,并研究了其抗炎功能。 HAX-DEX在不到1分钟的时间内通过醛基与酰肼基之间的交联反应形成了水凝胶。水凝胶在培养基中降解超过5天,在这段时间内缓慢释放地塞米松,从而减少了由脂多糖刺激的原代小鼠巨噬细胞在体外产生的TNF-α和IL-6。 HAX-DEX在皮下注射时具有生物相容性,与未修饰的交联HA相比,引起的炎症更少。 (c)2006 Elsevier Ltd.保留所有权利。

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