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J Dent Res:新型热响应性PIC凝胶可用于牙周治疗局部药物的输送

2019-03-24 不详 网络

本研究旨在评估一种新型的热敏反应性多异氰肽(PIC)水凝胶作为注射载体,用于牙周治疗的局部药物输送。制备三种PIC凝胶制剂,0.2%,0.5%和1%w / w。市售的20%和26%w/w的泊洛沙姆407(P407)凝胶作为对照。将作为预处理药物的脂氧素A4(LXA4)悬浮于凝胶溶液中。评估系统的动态机械性能、注射性和稳定性,LXA4的释放和生物活性以及细胞相容性。结果显示,PIC和P407凝胶的胶

本研究旨在评估一种新型的热敏反应性多异氰肽(PIC)水凝胶作为注射载体,用于牙周治疗的局部药物输送。

制备三种PIC凝胶制剂,0.2%,0.5%和1%w / w。市售的20%和26%w/w的泊洛沙姆407(P407)凝胶作为对照。将作为预处理药物的脂氧素A4(LXA4)悬浮于凝胶溶液中。评估系统的动态机械性能、注射性和稳定性,LXA4的释放和生物活性以及细胞相容性。

结果显示,PIC和P407凝胶的胶凝温度约为13°C至23°C。由于聚合物浓度低,PIC凝胶粘度较低,机械性能弱于P407凝胶。然而,当与磷酸盐缓冲盐水一起孵育时,PIC凝胶保持凝胶完整性至少2周,而P407凝胶在1周内完全崩解。LXA4在中性和碱性介质中化学稳定超过1个月。从1%PIC或26%P407凝胶中释放LXA4描绘了初始突释,然后持续释放约4天。突释的程度与聚合物浓度负相关。从PIC凝胶释放后,LXA4保持生物活性。1%PIC凝胶未观察到细胞毒性。然而,26%P407抑制牙周韧带细胞和牙龈上皮细胞生长。

总之,该研究结果表明,热响应性PIC凝胶是牙周药物递送的潜在候选者。

原始出处:

Wang B, Shao J, et al, A Novel Thermoresponsive Gel as a Potential Delivery System for Lipoxin. J Dent Res. 2019 Mar;98(3):355-362. doi: 10.1177/0022034518810213. Epub 2018 Nov 7.

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    2019-03-26 chg122
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    2019-03-26 lishizhe
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