Selective loading of 5-fluorouracil in the interlayer space of methoxy-modified kaolinite for controlled release

Selective loading of 5-fluorouracil in the interlayer space of methoxy-modified kaolinite for controlled release
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5-氟尿嘧啶在甲氧基改性高岭石层间空间的选择性负载并实现控释

DOI:
10.1016/j.clay.2017.04.008
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发表时间:
2017-05
影响因子:
5.6
通讯作者:
Liu Zongwen
Liu Zongwen
中科院分区:
地球科学2区
文献类型:
--
作者:
Tan Daoyong;Yuan Peng;Dong Faqin;He Hongping;Sun Shiyong;Liu Zongwen

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甲氧基改性高岭土作为抗癌药物5-氟尿嘧啶(5-FU)的新型载体。通过简单的水冲洗可以去除外表面上弱键合的5 FU,从而实现了5 FU选择性地负载到甲氧基改性高岭土的层间空间。插层后的5 FU与高岭石层间表面具有较强的亲和力(静电力和氢键),由于高岭石层间的扩散限制和5 FU与高岭石之间的强亲和力,其释放受到控制。在模拟结肠液(pH 5.5)中从甲氧基改性的高岭石中控制释放5 FU使得其具有潜在的用于施用用于结肠特异性递送的5 FU的口服制剂的用途。
Methoxy-modified kaolinite was used as a novel carrier for anticancer drug 5-fluorouracil (5FU). The selective loading of 5FU into the interlayer space of methoxy-modified kaolinite was achieved because the weakly bonded 5FU on the external surface was removed off by facile water rinse. The intercalated 5FU has strong affinity (electrostatic force and hydrogen bonding) with the interlayer surface of kaolinite, and its release was controlled because of the diffusion restriction of the kaolinite lamellar layers and the strong affinity between 5FU and kaolinite. The controlled release of 5FU from methoxy-modified kaolinite in simulated colonic fluid (pH 5.5) makes it be of potential use to administer an oral formulation of 5FU for colon specific delivery.
DOI: 10.1139/v56-231
发表时间: 1956-01-01
期刊: CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE
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