西罗莫司缓释微球的制备及其对淋巴细胞增殖的抑制作用研究
[Abstract]:Aim to study the drug release behavior of sirolimus sustained release microspheres in vitro and its inhibitory effect on lymphocyte proliferation. Methods Sirolimus sustained release microspheres were prepared by emulsification-solvent volatilization method. The morphology of sirolimus microspheres was observed by transmission electron microscope (TEM). The drug loading, encapsulation efficiency and drug release rate in vitro were determined. The inhibition rate of sustained-release microspheres on human lymphocytes was determined by thiazolyl (MTT) method. Results the average particle size of sirolimus sustained-release microspheres was (186.73 卤12.62) nm, loading (28.74 卤2.63)%, and the encapsulation efficiency was (73.53 卤7.12)%. The accumulative drug release rate was 93.15 after 168 hours after the drug release reached 47.3% in 24 hours. The inhibition rates of sirolimus slow-release microspheres on lymphocyte proliferation were 18.28 ~ 33.9610 and 50.2453.91respectively, and the inhibition rates of sirolimus sustained release microspheres on lymphocyte proliferation were 83.02 and 73.91h, respectively. Conclusion sirolimus sustained-release microspheres have a good sustained release effect in vitro and inhibit lymphocyte proliferation.
【作者单位】: 首都医科大学附属北京世纪坛医院药剂科;解放军总医院老年医学研究所;
【分类号】:R943;R96
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