检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:赵燕娜[1,2] 王婷[1,3] 李然[1,3] 韩美华[1] 王向涛[1] 郭一飞[1]
机构地区:[1]中国医学科学院&北京协和医学院药用植物研究所,北京100193 [2]聊城大学生物制药研究院,山东聊城252059 [3]黑龙江中医药大学,哈尔滨150040
出 处:《中国现代应用药学》2017年第5期654-658,共5页Chinese Journal of Modern Applied Pharmacy
基 金:国家自然科学基金(21444003);北京协和医学院青年基金(33320140184);北京协和医学院研究生创新基金(2015-1007-17)
摘 要:目的考察制备的新型棒状羟基喜树碱纳米粒形态的影响因素。方法选择不同投料比、不同制备方法及是否存在其他稳定剂为考察因素,分别进行以新型树枝状大分子PAMAM-co-0.25OEG,PGD为稳定剂的羟基喜树碱纳米粒的制备,并观察纳米粒在电镜下的形态。结果以PGD为稳定剂的羟基喜树碱纳米粒在电镜下的形态不受制备方法的影响,但和药物与稳定剂的比例,即投料比有关,当投料比从4∶1增加至1∶3时,较多PGD稳定剂的存在更容易包裹药物形成球形纳米粒。Chol-PEG600稳定剂与PGD稳定剂同时存在时,高载药量的羟基喜树碱纳米粒中也会存在球形粒子。结论羟基喜树碱纳米粒的形态与稳定剂的用量及其结构有关,且稳定剂性质不同,粒径大小相同的纳米粒电位也相差较大。OBJECTIVE To investigate the affecting factors of the morphology on the novel rod hydroxycamptothecin (HCPT) nanoparticles. METHODS Choose different drug loading ratio, different preparation methods and the existence of the other stabilizers or not as examination factors to prepare HCPT nanoparticles stabilized by the novel codendrimer PAMAM-co-0.25OEG, PGD, respectively. The morphology under the electron microscope of the nanoparticles was observed. RESULTS The morphology under the electron microscope of HCPT nanoparticles stabilized by codendrimer PGD was not affected by the preparation methods, but was influenced by the ratio of the drugs and stabilizers (drug loading ratio). While the drug loading ratio increased from 4:1 to 1:3, the existence of large amount of stabilizer PGD made it easier to package HCPT drug and form spherical nanoparticles. HCPT nanoparticles of high drug loading ratio stabilized by both PGD and Chol-PEG600 would also form some spherical particles. CONCLUSION The morphology of HCPT nanoparticles are affected by the radio and structure of the stabilizing agent. HCPT nanoparticles with similar particle size can also be with comparatively different Zeta potential according to the characteristics of the stabilizers.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.200