Effect of Propolis Preparations on Transepithelial Electrical Potential, Resistance, and Ion Transport in In Vitro Study

Figure 3

The mean, minimal, maximal transepithelial potential difference value for mechanical stimulation RH₂. The figure shows arrangement the difference of electrical potential, its minimal and maximal value during second stimulation by Ringer solution (stimulation RH₂). The time of stimulation was 15 seconds. Abbreviations. p < 0.001. I: long-term incubation in 1 ml ethanol extract of propolis dissolved in 100 ml water, II: undisturbed ion transport, III: long-term incubation in propolis ointment, dPD - difference of electrical potential values during RH₂ stimulation (mV), : minimal transepithelial electrical potential during RH₂ stimulation (mV), and : maximal transepithelial electrical potential during RH₂ stimulation (mV).