新型前体脂质体载药及影响因素考察

Aim A new proliposomal technology was used to trap several drugs, such as tegafur, silymarin, cistanosides, oleanolic acid. And then these proliposomal characters were studied. Methods These proliposomes formed liposomes after mixing with water. And then the liposomal morphology was determined by electron microscope, and the liposomal particle size determined by particle sizes instrument. The trap efficiency was determined by the column chromatography, and then the influence factors on the trap efficiency were investigated. Results The liposomes looked round, some with multiply layers, the particle was small, and the ξ potential was about -30 mV. The trap efficiency changed with the partition coefficient and pH. When the partition coefficient and pH increased, the trap efficiency increased. Furthermore, the trap efficiency was not influenced by the molecular weight. Conclusion This kind of liposomal technology trapped the drugs efficiently, and the lipophilic drugs were trapped more easily. Some Chinese traditional drugs could be trapped too.

Influence factors on the entrapment of drugs in a novel proliposomes

AIM: A new proliposomal technology was used to trap several drugs, such as tegafur, silymarin, cistanosides, oleanolic acid. And then these proliposomal characters were studied. METHODS: These proliposomes formed liposomes after mixing with water. And then the liposomal morphology was determined by electron microscope, and the liposomal particle size determined by particle sizes instrument. The trap efficiency was determined by the column chromatography, and then the influence factors on the trap efficiency were investigated. RESULTS: The liposomes looked round, some with multiply layers, the particle was small, and the xi potential was about - 30 mV. The trap efficiency changed with the partition coefficient and pH. When the partition coefficient and pH increased, the trap efficiency increased. Furthermore, the trap efficiency was not influenced by the molecular weight. CONCLUSION: This kind of liposomal technology trapped the drugs efficiently, and the lipophilic drugs were trapped more easily. Some Chinese traditional drugs could be trapped too.