“ D-Glucose increased the cytosolic NADH%/NAD+ ratio (but not the cytosolic NADPH/NADP+ ratio), augmented O2 uptake, raised the ATP/ADP ratio, decreased 86Rb outflow, and stimulated insulin release in tumoral insulin-producing cells of the RINm5Fline, L-Leucine and 4-methyl-2-oxopentanoate also stimulated insulin secretion.”