CPT1A and obstructive sleep apnea syndrome: Similarly, the protein expression of CD36 and CPT1 was stable across the control, OSA, T2DM, and T2DM + OSA groups (ratio of CD36 to β-tubulin band intensity: 1.4 ± 0.4, 2.1 ± 0.7, 1.4 ± 0.3, and 2.4 ± 0.8, respectively, all were NS; the ratio of CPT1 to β-tubulin band intensity: 0.3 ± 0.1, 0.4 ± 0.1, 0.3 ± 0.2, and 0.7 ± 0.3, respectively, all were NS) (Figure 2A–C).