泊洛沙姆
万古霉素
泊洛沙姆407
化学
抗菌剂
色谱法
抗菌活性
耐受性
药理学
抗生素
医学
金黄色葡萄球菌
聚合物
细菌
生物化学
有机化学
不利影响
生物
共聚物
遗传学
作者
Marie-Laure Veyries,Guy Couarraze,Sandrine Geiger,Florence Agnely,Laurent Massias,B Kunzli,F. Faurisson,B Rouveix
标识
DOI:10.1016/s0378-5173(99)00307-5
摘要
The purpose of this study was to investigate Poloxamer 407 25% (w/w) formulations aimed at prolonging the residence time of vancomycin, a time-dependent antibiotic, in a body site with a high infectious risk. Reversible thermal gelation of the formulations permitted their local injection in liquid form and in situ gelation as they warmed to body temperature. Neither the rheological properties of the Poloxamer matrices nor the antibacterial activity of vancomycin was altered by their combination. In vitro, the dispersed form exhibited prolonged release, with a lower diffusion coefficient of vancomycin compared to the solubilized form (4.7x10(-8) vs 2. 1x10(-7) cm(2) s(-1)131 mg l(-1) for the solubilized form), followed by lower but effective antibacterial levels for at least 8 days. Controlled-release profiles, good preservation of vancomycin activity, good tolerability in rats, and ease of administration suggest that Poloxamer 407 may be useful as a vancomycin delivery vehicle for local prophylaxis of infections, especially in prosthetic surgery.
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