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

Figure 4

The mean, minimal, maximal transepithelial potential difference value for chemical stimulation B. The figure shows arrangement the difference of electrical potential, its minimal and maximal value during stimulation by bumetanide (stimulation B). The time of stimulation was 15 seconds. Statistical significance between groups was marked as p < 0.001. 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 bumetanide stimulation (mV), : minimal transepithelial electrical potential during bumetanide stimulation (mV), and : maximal transepithelial electrical potential during bumetanide stimulation (mV).