One-year follow-up of the oxidative stress profile of patients after laparoscopic sleeve gastrectomy

S. Şimşek, B. Er Urgancı, S. Yılmaz, M.R. Aykota, T. Sarı, İ. Açıkbaş

Medical Biology Department, Faculty of Medicine, Pamukkale University, Denizli, Turkey. aber@pau.edu.tr

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• Obesity

OBJECTIVE: Obesity is a major risk factor for developing a number of serious diseases, such as cardiometabolic changes and cancer. An increase in adipose tissue and a decrease in antioxidant capacity both contribute to the etiopathogenesis of these comorbidities. The most effective method in the treatment of morbid obesity is bariatric surgery. Laparoscopic sleeve gastrectomy (LSG) is the most preferred method in bariatric surgery today. In this study, the potential improvement effect of laparoscopic sleeve gastrectomy (LSG) surgery in the restoration of weight loss and endocrine and tissue-based deterioration was obtained by evaluating changes in oxidative stress, antioxidant agents, and lipid oxidation levels.

PATIENTS AND METHODS: Fifty patients who had LSG surgery were chosen, along with 50 healthy volunteers who were the same age and gender as these patients. Serum total antioxidant capacity measurement, total oxidant capacity measurement, malondialdehyde (MDA) for the measurement of lipid peroxidation degree, and superoxide dismutase (SOD) and glutathione peroxidase (GPx) levels for the measurement of antioxidant levels were measured colorimetrically with the help of a commercial kit.

RESULTS: Oxidative stress indices, MDA levels, and GPx levels of patients with morbid obesity treated with LSG were observed to decrease significantly compared to the preoperative period, while no significant changes were observed in SOD levels.

CONCLUSIONS: In patients with morbidly obese conditions, the weight control achieved by sleeve gastrectomy, which is a restrictive method and thus causes a decrease in adipose tissue, causes a decrease in oxidative stress and an increase in the antioxidant response.

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