Figure 3. Caffeine-induced PDS require Cav1.3 channels.
A, B Suprathreshold electrical events recorded in Cav1.2DHP-/- neurons (A) or Cav1.3-/- neurons (B) after co-administration of caffeine (1 mM) and BayK (3 μM). C-F Analysis of the area (C, D) and duration (E, F) of suprathreshold electrical events recorded in the presence of caffeine in Cav1.2DHP-/- neurons (C, E) or Cav1.3-/- neurons (D, F) under three conditions of LTCC activity: endogenous activity (DMSO control), potentiated (BayK, 3 μM) and inhibited (isradipine, 3 μM). The figures in the bars indicate the total number of events evaluated. All statistically significant differences are indicated by horizontal brackets. G, H Overlay of typical suprathreshold electric events recorded from Cav1.2DHP-/- neurons (G) or Cav1.3-/- neurons (H) from the experiments analysed in C to F.