Sleeve gastrectomy improves HDL function examined by Apo-A1 and atherogenic indices in non-diabetic obese patients.

Objective: Dysregulation of lipid metabolism can be one of the pathophysiological mechanisms linking high-density lipoprotein cholesterol (HDL-C) dysfunction to obesity. The aim of the study is to show possible changes in lipid metabolism with atherogenic indices in obese patients after sleeve gastrectomy (SG) surgery.

Method: Thirty patients who had SG surgery for obesity were included in the prospective study. The atherogenic risk indices were calculated pre-operatively, at 3 and 6 months post-operatively. Furthermore, serum paraoxonase-1 (PON-1), apolipoprotein-A1 (Apo-A1), and platelet-activating factor acetylhydrolase (PAF-AH) levels, amount of oxidized low-density lipoprotein (Ox-LDL) was measured.

Results: We observed improvement in atherogenic risk indices and improved HDL-C functionality after SG. Increases were observed in HDL-C and HDL-C-related Apo-A1 levels 6 months after obesity surgery. Besides, the amount of serum triglycerides (TGs), PON-1 activity, and atherogenic risk indices decreased significantly within 6 months.

Conclusion: As far as we know, there is no study in the literature examining the dynamic changes in SG and PON-1, PAF-AH, Apo-A1, and Ox-LDL parameters. This preliminary study dynamically detected improvement in HDL-C function and reduction in atherogenic risk indices after SG.