期刊
CARBOHYDRATE RESEARCH
卷 341, 期 17, 页码 2835-2841出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2006.09.016
关键词
chitosan; microspheres; gadolinium diethylenetriaminopentaacetic acid; gadolinium neutron-capture therapy
In order to provide a suitable device that would contain water-soluble drugs, highly water-soluble gadolinium diethylene-triaminopentaacetic acid-loaded chitosan microspheres (CMS-Gd-DTPA) were prepared by the emulsion method using glutaraldehyde as a cross-linker and Span 80 as a surfactant for gadolinium neutron-capture therapy of cancer. The gadolinium content and the mass median diameter of CMS-Gd-DTPA were estimated. The size and morphology of the CMS-Gd-DTPA were strongly influenced by the initial applied weight ratio of Gd-DTPA:chitosan. FTIR spectra showed that the electrostatic interaction between chitosan and Gd-DTPA accelerated the formation of gadolinium-enriched chitosan microspheres. Sufficient amounts of glutaraide-hyde and Span 80 were necessary for producing discrete CMS-Gd-DTPA. The CMS-Gd-DTPA having a mass median diameter 11.7 mu m and 11.6% of gadolinium could be used in Gd-NCT following intratumoral injection. @ 2006 Elsevier Ltd. All rights reserved.
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