Citation:
SONG Xiao-Li, LUO Xia-Dan, LI Ling, ZHU Ai-Ping. Preparation and Liver MRI of Fe3O4/N-(2-Hydroxyl)propyl-3-trimethyl Ammonium Chitosan Contrast Agent[J]. Chinese Journal of Inorganic Chemistry,
;2015, 31(10): 1987-1992.
doi:
10.11862/CJIC.2015.230
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Supermagnetic Fe3O4/N-(2-hydroxyl)propyl-3-trimethyl ammonium chitosan nanoparticles were synthesized by combining Fe3O4 and CS chemically modified with glycidyl trimethyl ammonium chloride. Properties of the obtained nanoparticles were investigated by transmission electron microscopy, dynamic light scattering, magnetic resonance imaging and vibration sample magnetometer. The cytocompatibility of the nanoparticles were assessed. Then the in vivo MRI of the nanoparticles were confirmed. The results demonstrate that the nanoparticles are uniform and stable in simulated physiological environment. Also the nanoparticles show good cyto-compatibility. The in vivo results show that the parenchyma signal intensity of rats liver is significantly decreased after injection of the nanoparticles. Thus it indicates that the nanoparticles have potential application in liver MRI as a negative contrast.
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