[The relationship of the permeability coefficients of testosterone with solubility parameters of vehicles]

The effects of vehicles on the penetration through rat skin of testosterone were investigated. The solubilities of testosterone in various vehicles and the fluxes through rat abdomen skin had been determined. The solubility parameters of testosterone (delta i) and vehicles (delta v(n)) were calculated by Hildebrand's method. There was a good inverse parabola correlation between the log permeability coefficients (logp) and (delta v(n)). When delta v(n) approched delta i the permeability coefficients of testosterone approched the minimum as its limit.

[Antiviral activity of tannin from the pericarp of Punica granatum L. against genital Herpes virus in vitro]

Based on cell culture techniques this study has demonstrated that tannin from the pericarp of Punica granatum is an effective component against genital herpes virus (HSV-2). The tannin not only inhibits HSV-2 replication, but also shows stronger effects of killing virus and blocking its absorption to cells.