ABSTRACT
Objective:To study the preparation of total leaves saponins of panax notoginseng liposomal gels and evaluate the quali-ty. Methods:The total leaves saponins of panax notoginseng liposomes were prepared by the film-dispersion method, and the formula was optimized by the orthogonal experimental design. A high-speed centrifugation method was applied to determine the encapsulation efficiency used as the evaluation index for the optimization of the preparation process. Then the gels were prepared and an HPLC meth-od was used to determine the content of ginsenoside Rb3 . The stability was preliminarily studied as well. Results:The preparation was semi-solid, and viscous gels with low skin irritation and good stability. The quality was accordance with the relevant provisions in Chi-nese Pharmacopoeia (2010 edition). Conclusion: The gels are with the properties of simple preparation process, reliable detection methods and stable and controllable quality.
ABSTRACT
Objective To explore the enhancement effect of N-trimethyl chitosan(TMC) on transdermal absorption of 8-methoxypsoralen-loaded liposomal(LMOP) gels in vitro.Methods TMC with quaternization degree of 60％ (TMC60) as the enhancer,the LMOP gels were prepared with free TMC60 or TMC60-coating.The enhancement of free TMC60 or TMC60-coating was studied by using Franz diffusion,cells with LMOP gels as the negative control and LMOP gels including 1％ Azone + propylene glycol as the positive control.Results Compared with the negative control,enhancement and drug amount in skin of LMOP gels with enhancer all showed significant difference (x2 =8.65,P ＜ 0.05),and the free TMC.60 was the best.Conclusion TMC can enhance the transdermal penetration of LMOP gels in vitro and is valuable to be studied further.