| Literature DB >> 14980420 |
Yoshihisa Kaneda1, Yasuo Tsutsumi, Yasuo Yoshioka, Haruhiko Kamada, Yoko Yamamoto, Hiroshi Kodaira, Shin-ichi Tsunoda, Takayuki Okamoto, Yohei Mukai, Hiroko Shibata, Shinsaku Nakagawa, Tadanori Mayumi.
Abstract
To achieve an optimum drug delivery such as targeting or controlled release utilizing bioconjugation with polymeric modifier, the conjugate between drugs and polymeric modifiers must be designed to show desirable pharmacokinetic characteristics in vivo. In this study, we assessed the biopharmaceutical properties of various nonionic water-soluble polymers as polymeric drug carriers. Polyvinylpyrrolidone (PVP) showed the longest mean resident time (MRT) after i.v. injection of all nonionic polymers with the same molecular size. In fact, tumor necrosis factor-alpha (TNF-alpha) bioconjugated with PVP (PVP-TNF-alpha) circulated longer than TNF-alpha bioconjugated with polyethylene glycol (PEG-TNF-alpha) with the same molecular size. Each nonionic polymeric modifier showed a different tissue distribution. Dextran was accumulated in the spleen and liver. Polydimethylacrylamide (PDAAm) tended to distribute in the kidney. However, PVP showed the minimum volume of tissue distribution. These results suggested that PVP is the most suitable polymeric modifier for prolonging the circulation lifetime of a drug and localizing the conjugated drug in blood.Entities:
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Year: 2004 PMID： 14980420 DOI： 10.1016/j.biomaterials.2003.10.003
Source DB: PubMed Journal: Biomaterials ISSN： 0142-9612 Impact factor: 12.479