Plasma adhesion and inflammation markers: Asymmetrical dimethyl-L-arginine and secretory phospholipase A(2) concentrations before and after laparoscopic gastric banding in morbidly obese patients

Background: The aim of this study was to examine the relationship between subclinical inflammation and weight loss by laparoscopic adjustable gastric banding (LAGB)

The effects on oxidative DNA damage of laparoscopic gastric band applications in morbidly obese patients

Background: Obesity may induce oxidative stress, causing oxidative damage of DNA. We examined associations between decreasing serum and urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels and weight loss in morbidly obese patients before and 6 months after laparoscopic adjustable gastric banding (LAGB). Methods: We compared patients who had surgery for morbid obesity with healthy, nonobese controls. Urine and fasting blood samples were collected once from the controls and from the morbidly obese patients before and 6 months after the LAGB. The serum and urinary 8-OHdG levels were evaluated in these groups using an enzyme-linked immunosorbent assay kit. Results: We included 20 patients who had surgery for morbid obesity (8 men, 12 women, mean body mass index [BMI] 46.82 +/- 4.47) and 20 healthy, nonobese people (10 men, 10 women, mean BMI 22.52 +/- 2.08) in our study. There was no significant difference in serum 8-OHdG levels between the groups, whereas urinary 8-OHdG levels were significantly higher in morbidly obese patients than in controls. Weight, BMI and serum and urinary 8-OHdG levels were significantly decreased in morbidly obese patients 6 months after LAGB. Conclusion: The LAGB provides efficient weight loss in patients with morbid obesity. The systemic oxidative DNA damage was increased by the morbid obesity, but this increase was not related to weight gain, and it was more evident in serum than urine samples. After LAGB for morbid obesity, the oxidative DNA damage declined both in serum and urine.Research Fund of Istanbul UniversityIstanbul University [3133]This work was supported by The Research Fund of Istanbul University (project number: 3133).WOS:0003377489000162-s2.0-84904367089PubMed: 2486961

The Effects on Obesity Related Peptides of Laparoscopic Gastric Band Applications in Morbidly Obese Patients

Background: The aim of this study was to examine the relationship between weight loss and resistin, apelin, chemerin, and visfatin after laparoscopic adjustable gastric banding (LAGB). Methods: The study group consisted of 19 patients who were operated on for morbid obesity (BMI: 48.7 +/- 6.6 kg/m(2)), and 22 healthy, normal-weight (BMI: 22.9 +/- 2.5 kg/m(2)) subjects formed the control group. We obtained blood samples from the study subjects at three different times: before undergoing surgery and at one month and 6 months after surgery. Blood was obtained once from the control group. Results: Significant weight loss was achieved at one and 6 months after surgery. Plasma levels of apelin, resistin, chemerin, and visfatin were higher in morbidly obese patients compared with the control group. Obesity-related peptides decreased one month and 6 months after surgery. Conclusions: Elevated plasma resistin, apelin, chemerin, and visfatin levels in morbidly obese patients are gradually reduced after weight loss. According to these findings, LAGB surgery is found to be an important and efficient means for morbidly obese patients both to lose weight and to develop a better metabolic risk profile in a short time period