Table 4. Changes in the intensities of the main functional groups in the 1480–1800 cm⁻¹ region for control and diabetic groups.

Data are given as means±S.D. P≤0.05 were accepted as significantly different from the control group.

	Left ventricle myocardium			Right ventricle myocardium			Vein
Functional groups	Control	Diabetic	P values	Control	Diabetic	P values	Control	Diabetic	P values
Amide I: α-helical structure (at 1655 cm−1)	−0.830±0.065	−0.680±0.100	≤0.01	−0.926±0.089	−0.756±0.069	≤0.001	−0.730±0.068	−0.510±0.035	≤0.001
Amide I: β-sheet structure (at 1638 cm−1)	−0.210±0.011	−0.240±0.010	≤0.01	−0.224±0.017	−0.237±0.010		−0.220±0.019	−0.260±0.024	≤0.01
Amide II: α-helical structure (at 1545 cm−1)	−0.420±0.024	−0.358±0.032	≤0.01	−0.430±0.035	−0.390±0.027	≤0.01	−0.380±0.022	−0.280±0.036	≤0.001