Diabetic cardiac autonomic neuropathy: insulin resistance, lipid profile, and omega-3 polyunsaturated fatty acids

The significance of cardiac autonomic neuropathy (CAN) in patients with type 2 diabetes mellitus (T2DM) has been not fully appreciated and there is no unified treatment algorithm. Aim: The aim of study was to investigate the effects of -3 polyunsaturated fatty acids (-3 PUFAs) on blood lipid profile and insulin resistance (IR) parameters in patients with T2DM and definite CAN. The study involved 33 patients with T2DM and definite CAN. Patients were allocated into two treatment groups: 1st group - 15 patients received standard hypoglycaemic therapy - control (n = 15); 2nd group (n = 18) - standard hypoglycaemic therapy and 1 capsule/day of the ω-3 PUFAs (1 g, including 90 % ω-3 PUFAs) for three months. The concentrations of glucose, glycated haemoglobin A1c, immunoreactive insulin in the blood were determined. Lipid metabolism was assessed by the concentration of total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides (TG) measurements. The insulin resistance Homeostasis model assessment, atherogenic coefficient (AC), TG/LDL-C, TG/TC, TG/LDL-C and TG glucose (TyG) index were calculated. Obtained results of our study could witness that the prescription of -3 PUFAs was accompanied by a statistically significant decrease in TG concentration; AC, TG/LDL-C, TG/TC, TG/LDL-C, TyG index parameters and increase in HDL-C levels (compared to control). Conclusions. Obtained results justify the appropriateness of -3 PUFAs prescriptions to patients with T2DM and definite CAN.

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