Phospho-Thr 172 AMPK, total AMPK, PI3K level and activity, phospho-Ser 473 Akt, total Akt, phospho-Ser 453 FoxO3a, phospho-Ser 1177 eNOS, total eNOS and SOD1, SOD2 expressions in the renal cortex and 24-h urinary NOx, 8-OH-dG concentrations of the db/m and db/db mice with or without VEGFR1 inhibition.