Tetraethyl Orthosilicate-Based Hydrogels for Drug Delivery-Effects of Their Nanoparticulate Structure on Release Properties.

Tetraethyl Orthosilicate-Based Hydrogels for Drug Delivery-Effects of Their Nanoparticulate Structure on Release Properties.
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四乙基矫正水凝胶,用于释放性能的纳米核酸结构的药物递送。

DOI:
10.3390/gels6040038
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发表时间:
2020-10-28
期刊:
Gels (Basel, Switzerland)
影响因子:
--
通讯作者:
Serban MA
Serban MA
中科院分区:
其他
文献类型:
--
作者:
Serban BA;Barrett-Catton E;Serban MA

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基于原硅酸四乙酯 (TEOS) 的水凝胶具有剪切应力响应和药物释放特性,只需通过 TEOS 水解,然后用水性溶剂进行体积校正和 pH 调节即可配制。这种碱性触变水凝胶(触变凝胶)是通过纳米颗粒二氧化硅的胶体聚集形成的。在此,我们研究了纳米颗粒结构单元对这些材料的药物释放特性的影响。我们的数据表明,配方中使用的水解 TEOS 的老化时间会影响触变凝胶的纳米颗粒结构和刚度。此外,纳米颗粒网络的形成机制或扰乱显着影响所掺入药物的释放曲线。总的来说,我们的结果强调了这些基本的纯 TEOS 水凝胶在药物输送应用中的多功能性。
Tetraethyl orthosilicate (TEOS)-based hydrogels, with shear stress response and drug releasing properties, can be formulated simply by TEOS hydrolysis followed by volume corrections with aqueous solvents and pH adjustments. Such basic thixotropic hydrogels (thixogels) form via the colloidal aggregation of nanoparticulate silica. Herein, we investigated the effects of the nanoparticulate building blocks on the drug release properties of these materials. Our data indicate that the age of the hydrolyzed TEOS used for the formulation impacts the nanoparticulate structure and stiffness of thixogels. Moreover, the mechanism of formation or the disturbance of the nanoparticulate network significantly affects the release profiles of the incorporated drug. Collectively, our results underline the versatility of these basic, TEOS-only hydrogels for drug delivery applications.
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