Progression of the diastolic pressure during low-flow ischemia in the control, lactate, pyruvate, and pyruvate plus ethanol groups. The number of experiments was 10 per group. L, lactate-rich medium; P, pyruvate-rich medium; PE, medium enriched with pyruvate plus ethanol. a,b,c,d,eP < 0.05, different letters indicate significant differences as represented.