Figure 1

Concentration-dependent decline of cardiac contractility in auxotonically contracting human atrial trabeculae upon sorafenib administration. Original analogue recordings of developed force with increasing (1–30 µM) concentrations of sorafenib (a) and after sorafenib wash-out (b). Summary data (c). n = 9/10 trabeculae (control/sorafenib) from 11 hearts; *p < 0.05 vs. baseline (Lmax) by Friedman’s repeated measures one-way ANOVA on ranks (ANOVA p < 0.001) and p < 0.01 vs. control by Student’s t-test, #p < 0.05 vs. 30 µM sorafenib and p = 0.68 vs. baseline (Lmax) by paired t-test.