NDLI: Deposition of Doxorubicin in Rats following Administration of Three Newly Synthesized Doxorubicin Conjugates

Content Provider	PubMed Central
Author	Huan, Menglei Tian, Shuang Cui, Han Zhang, Bangle Dan, Su Wang, Jieping Li, Kangchu Cao, Weidong
Copyright Year	2013
Abstract	We previously reported the synthesis of three DOX conjugates that represented different targeting vehicles and showed them to have antitumor activity both in vitro and in vivo. However, the relationships between the pharmacokinetics of these DOX conjugates and their chemical structures were not characterized. In the current study, free DOX derived from each of the conjugates was found at low levels in the rat circulatory system, with conjugated DOX being the major form. The two polyethylene glycol (PEG) conjugates slowly released DOX, and t 1/2 β for total DOX from DOX-LNA, PEG-ami-DOX, and PEG-hyd-DOX was 5.79, 10.22, and 15.18 h, respectively. All three conjugates also deposited less DOX into normal organs than did an equivalent dose of free DOX, and the Cmax value of free DOX released by DOX- LNA, PEG-ami-DOX, and PEG-hyd-DOX was 32.5, 9.5, and 4.7 μ g/g, respectively. Among the conjugates, the compound with an acid-labile bond between PEG and DOX exhibited the lowest free DOX deposition in healthy tissues, which should decrease the systemic toxicity of free DOX while allowing for tumor targeting by PEG.
Related Links	http://dx.doi.org/10.1155/2013/926584
Starting Page	926584
File Format	PDF
ISSN	23146133
e-ISSN	23146141
Journal	BioMed Research International
Volume Number	2013
Language	English
Publisher	Hindawi Publishing Corporation
Publisher Date	2013-01-01
Access Restriction	Open
Rights Holder	Hindawi Publishing Corporation
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Immunology and Microbiology Medicine Biochemistry, Genetics and Molecular Biology

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