Figure 9. Effects of changing KCNQ and hERG current conductances on the modified USMC model AP form.
Simulating the effects of increased expression of KCNQ subunits and reduction of HERG current in uterine smooth muscle cells during late term. The conductance values for I KCNQ and I hERG in the modified USMC model, as in Figure 7, are used as the reference values. Both I KCNQ1 and I KCNQ4 were changed by the same proportions. A, no I KCNQ1 or I KCNQ4; I hERG at 1 fold. B, I KCNQ1 and I KCNQ4 at 0.25 fold; I hERG at 1 fold. C, I KCNQ1, I KCNQ4 and I hERG at 1 fold. D, I KCNQ1 and I KCNQ4 at 1.25 fold; I hERG at 1 fold. E, I KCNQ1 and I KCNQ4 at 1.25 fold; I hERG at 0.6 fold. F, I KCNQ1 and I KCNQ4 at 1.25 fold; I hERG at 0.05 fold.