Release and Percutaneous Penetration of Cyclovirobuxine D Transdermal Patch in Vitro / 医药导报

ABSTRACT

Objective To explore the release and percutaneous penetration of cyclovirobuxine D patches at different concentrations in vitro. Methods The release curves of cyclovirobuxine D patch in vitro were fitted by ritger-peppas mathematical model, and the patch release mechanism was discussed according to the fitting parameters. At the same time, compared the percutaneous permeability characteristics of 0.25,0.5,1.0,2.0 mg.( cm2 )-1 of cyclovirobuxine D patch by using a modified Franz diffusion cell, with isolated rat skin serving as transdermal barrier. Results Ritger-Peppas model fitting equation for cyclovirobuxine D patch [1.00 mg.(cm2)-1]was: Mt/M=0.964 6 t1.621 6.And the percutaneous penetration curve was best fitted to Higuchi kinetics equation.The drug release rate from the patch matrix was greater than the rate of penetration through the skin, indicating the patch at the time through rat′s skin was a passive diffusion process, and transdermal process was rate-limited by skin. Conclusion Kinetics equation fitting is an effective method for analyzing drug release and permeation behavior of cyclovirobuxine D patch in vitro.