Objective:To prepare and identify poly aspartic acid-co-glutamic acid-metronidazole(PAG-MTI) nanoparticles.Methods:Metronidazole was conjugated into polymers. The structure, morphology and particle size of PAG-MTI were characterized by infrared spectrophotometry, ultraviolet spectrophotometry, transmission electron microscope and laser diffraction-based particle size analyzer. Metronidazole release behavior from these polymers was also determined in vitro. Results:PAG-MTI nanoparticles were spherical in morphology; drug loadings were 12%, and average size of nanoparticles was198.9 nm. The release of metronidazole in PAG-MTI was sustained obviously. The accumulation rate of metronidazole was 12.19% at 1 h, and 47.51% at 24 h after released. Conclusion:PAG-MTI nanoparticles by chemosynthesis can delay metronidazole release in vitro. It may be considered as a promising approach in the treatment of T.vaginalis.
CHEN Xi-min,QI Xiao-hong,DUAN Lei,Zhu Li-qun,FENG Zhen-qing,CHEN Qiang,WU Jun.Preparation and identification of poly aspartic acid-co-glutamic acid-metronidazole nanop-articles[J].,2007,(6):569-572.