Figure 2.
CaMKIIδ knockout prevents Gq-induced cardiac dysfunction. A, B, Echocardiographic indices of left ventricular (LV) function and LV dilatation. Shown are fractional shortening (A), LV Internal Systolic Diameter (LVIDs, B); (N=7 for WT, N=5 for KO, N=9 for Gq and N=8 for Gq/KO). C, Indices of cardiac contractility and relaxation. Shown are maximal rates of LV-pressure increase (dP/dtmax) and decrease (dP/dtmin), N= 4 per group. D, Lung weight/Body Weight ratio, an indicator of the severity of functional decompensation (N= 6–10 per group). All values are expressed as mean ± SEM. #, p < 0.05 versus WT, *; p < 0.05 versus Gq. WT, wildtype; KO, CaMKIIδ-knockout; Gq, Gq-transgenic; Gq/KO, Gq-transgenic in a CaMKIIδ-knockout background.
