The expressions of mitochondrial respiratory enzyme complexes (NDUFS3, UQCRC1, COX-2, SDHA, and ATPB) were significantly elevated in the MetS group and the MetS + OVX group compared to the control group (NDUFS3: F (6, 35) = 30.4585, p < 0.0001; SDHA: F (6, 35) = 12.8988, p < 0.0001; UQCRC2: F (6, 35) = 12.5466, p < 0.0001; COX-2: F (6, 35) = 15.6375, p < 0.0001; ATPB: F (6, 35) = 33.4911, p < 0.0001) (Figure 9). This evidence concerns the gene UQCRC2 and metabolic syndrome.