Oxidative stress profile and type 2 diabetes remission at 6 months after sleeve gastrectomy versus conservatory treatment

Abstract

The aim of this study was to examine the impact of weight loss on oxidant-antioxidant profile in obese T2D patients. The study was carried out on 38 obese T2D males randomized in two groups, one that underwent laparoscopic sleeve gastrectomy (LSG) and the other an intensive diet intervention (DTG) and standard diabetes treatment. Body mass index (BMI), fasting blood glucose, total cholesterol, HDL-cholesterol, triglycerides, HbA 1c and C Reactive Protein (CRP) were evaluated at baseline and after 6 months of follow-up. Ghrelin, insulin, C peptide, leptin and adiponectin were also measured in all subjects by ELISA method. For oxidative stress profile, “Respiratory Burst” and the antioxidants enzymes: paraoxonase1 (PON1), glutationperoxidase (GPx) and catalase (CAT) were evaluated. After LSG, BMI and metabolic control improved significantly: weight loss 78.98%, fasting plasma glucose (FPG) < 11.0 mmol/L and HbA 1c < 6%. Antioxidant enzymes GPx and CAT increased after 6 months in both groups. By using univariate conditional regression model we were able to highlight that patients with an unfavourable evolution regarding T2D remission (HbA 1c > 6%) had higher values (at baseline and after 6-months) for BMI, C peptide and CRP and lower values (at baseline and after 6 months) for HDL and adiponectin (as an anti-inflammatory factor). We conclude that the significant weight fluctuations can directly influence antioxidant enzyme profiles and may play an important role in the mediation of weight loss and the beneficial metabolic effects of LSG.