Table 1.

Values of analyzed parameters of skin specimens.

Incubation/stimulation solution	Stationary conditions		Stimulation conditions (15 s)		Wilcoxon test (p)
Parameter	R (Ω*cm2)	PD (mV)	PDmin (mV)	PDmax (mV)	PD vs. PDmin	PD vs. PDmax	PDmin vs. PDmax
RH (n = 70)
Median	844	− 0.25	− 0.15	0.15	0.253	0	0
Lower quartile	438	− 0.66	− 0.95	− 0.12
Upper quartile	1360	0	0	0.7
A (n = 66)
Median	1024	− 0.31	− 0.45	0	0	0	0
Lower quartile	740	− 1.04	− 1.27	− 0.94
Upper quartile	1563	0.18	− 0.09	0.69
B (n = 72)
Median	894	− 0.23	− 1.16	0	0	0	0
Lower quartile	610	− 1.9	− 2.32	− 1.77
Upper quartile	1136	0.12	0	0.37
Mann–Whitney test (p)
RH vs. A	0.013	0.585	0.025	0.028
RH vs. B	0.929	0.238	0.001	0.001
A vs. B	0.007	0.142	0.062	0.119

RH isoosmotic Ringer solution, A inhibited sodium transport by amiloride (0.1 mM), B inhibited chloride transport by bumetanide (0.1 mM), PD transepithelial potential difference of epithelial skin surface measured in stationary conditions (mV), PDmin minimal transepithelial potential difference during 15 s stimulation of epithelial skin surface (mV), PDmax maximal transepithelial potential difference during 15 s stimulation of epithelial skin surface (mV), R resistance measured in stationary conditions (Ω*cm²), italic values indicate a level of significance p < 0.05.