BALB/c mice were made hypothyroid or hyperthyroid as described in the materials and methods. Mice were sacrificed and liver RNA was harvested. The mRNA levels were measured for A) PLA2g2a, B) PDK4, C) PEPCK and D) CPT1a. Values are the average of RNA from 5 mice. C57BL/6 IIA+ mice were fed a PTU supplemented diet for 5 weeks. Mice were injected with T3 and RNA was harvested from the liver. The mRNA levels were measured for E) PLA2g2a, F) PLA2g1b, G) PLA2g3, H) PLA2g5, I) PEPCK, J) PDK4 and K) SREBP-1c. L) PLA2g2a protein abundance was measured by western blotting. Values are the average of RNA from 7 mice. The data are expressed as the mean of the fold induction by PTU+T3 ± S.E.M of mRNA abundance relative to PTU treated mice (* = p value < 0.05; ** = p value <0.01; *** = p value <0.001; ****= p value <0.0001).