Regional insulin-stimulated cardiac glucose uptake. (a) Metabolic index of glucose uptake (R
) in the remote left ventricle and (b) peri-infarct region of the left ventricle. Cardiac R
values are relative to brain R
. n = 8-9 mice per group. (c) Remote left ventricle and (d) peri-infarct peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1α), glucose transporter 4 (GLUT4) and hexokinase II (HKII) as determined by immunoblotting. (e) Left ventricle and (f) peri-infarct phospho-Akt (p-Akt), Akt and p-Akt-to-total Akt ratio (p-Akt/Akt) as determined by immunoblotting. (g) Representative immunoblotting performed to measure PGC-1α, GLUT4, HKII, p-Akt and Akt. Cardiac proteins are normalized to glyceraldehyde-3-phosphate dehydrogenase (GAPDH) content and are relative to the SHAM group. n = 6 mice per group. Data are mean ± S.E.M. *p < 0.05 vs. SHAM. †p < 0.05 vs. MI + PBS.