No significant differences were observed in testicular GLUT1 transcript levels between animals from both groups (Figure 2(a)), while GLUT1 protein in animals from T2DM group was significantly increased in 13% (1.13 ± 0.07-fold variation), when compared with the control group (Figure 2(b)). The gene discussed is SLC2A1; the disease is type 2 diabetes mellitus.